Skip header and navigation

Refine By

29 records – page 1 of 3.

vision-testing trial lens case

https://mhc.andornot.com/en/permalink/artifact4783
Dates
1900
1930
circa 1900-1930
Collection
Queen's University Faculty of Medicine Collection
Category
Diagnostic & Treatment Artifacts
Classification
Ophthalmology
Accession Number
997001295
Description
Ophthalmological lens kit, which consists of 189 pieces in a leather case; the case (a) consists of a rectangular-shaped box with a lid hinged onto the bottom with two hinges at the back and three clasps--with a central one that locks--at the front; the inside top and bottom of the case are felt-li…
  5 images  
Accession Number
997001295
Collection
Queen's University Faculty of Medicine Collection
Category
Diagnostic & Treatment Artifacts
Classification
Ophthalmology
Description
Ophthalmological lens kit, which consists of 189 pieces in a leather case; the case (a) consists of a rectangular-shaped box with a lid hinged onto the bottom with two hinges at the back and three clasps--with a central one that locks--at the front; the inside top and bottom of the case are felt-lined and have slots to hold the lenses and a small box at the bottom right side to house other pieces; slots for the lenses are labelled for size and type of lens; there is also a small ivory label attached to the inside bottom of the box; the case has two inner covers for the top (b) and bottom (c); these covers are flat and rectangular in shape, with leather on the top and felt on the bottom; the covers also have a clasp near each corner that allows them to fit snugly over the top and bottom of the case and protect the contents within; the sectioned box in the bottom right of the case houses three items (d-f); these include: a pair of eyeglass frames (d), a ruler (e) and a universal pupilometer card (f); the eyeglass frames (d) consist of metal formed into the shape of round-framed eyeglasses; a round bar above the lenses can be adjusted to control the spacing between the lenses; the bottom of the lenses both have a slotted piece that holds up to three lenses on the frame; there is a nose bridge piece between the two lenses that is also adjustable; the sidepieces of the frames, for the ears, can also be lengthened or shortened; the kit contains an ivory ruler (e) that is flat on the bottom and slightly rounded on the top with straight right and left edges; the top of the ruler is marked in increments of millimetres and inches; the universal pupilometer (f) is printed on a heavy paper card and lists measurements in millimetres and inches, as well as manufacturing information; the kit contains 179 lenses for the eyeglass frame; the lenses all consist of a round metal frame formed into a closed circle with a flat, rounded holding piece at one side; the frame holds a round, clear glass lens with flat or slightly curved upper and lower edges; thicknesses vary; lenses 997.001.295f-c8 fit this description; the kit also contains five other lenses (997.001.295d8-h8); all of these lenses also consist of a round metal frame formed into a closed circle with a flat, rounded holding piece; the frames hold a round, flat glass lens that looks as follows: (d8) half-clear, half-frosted; (e8) frosted; (f8) dark glass (grey-blue), clear; (g8) clear, dark glass (grey-blue); (h8) clear, dark glass (red);the kit also contains four specialized lenses (i8)-(l8); these lenses all consist of a round metal frame formed into a closed circle with a flat, rounded holding piece; the frames hold a flat, round bakelite piece with a section cut out from the centre, as follows: (i8) has a round circle cut out of the centre with bifocal glass set in; (j8) has a very small round hole through the bakelite in the centre; (k8) has a thin rectangular slot cut out of the centre of the bakelite, with a small cylindrical piece of glass set into the opening; (l8) has a very thin rectangular slot cut out of the bakelite in the centre; there is an incomplete lens in the kit as well (m8); this lens has no metal frame; the lens is flat and round and made of clear dark grey-blue glass.
Number Of Parts
195
Part Names
a - case
b - inner cover
c - inner cover
d - eyeglass frame (folded)
e - ruler
f - universal pupilometer card
g - concave spherical convex lens (20.)
h - concave spherical convex lens (16.)
i - concave spherical convex lens (13.)
j - concave spherical convex lens (11.)
k - concave spherical convex lens (10.)
l - concave spherical convex lens (9.)
m - cylindrical concave lens (6.)
n - cylindrical concave lens (5.)
o - cylindrical concave lens (4.50)
p - cylindrical concave lens (4.)
q - cylindrical concave lens (3.50)
r - cylindrical concave lens (3.)
s - cylindrical concave lens (2.75)
t - cylindrical concave lens (2.50)
u - cylindrical concave lens (2.25)
v - cylindrical concave lens (2.0)
w - cylindrical concave lens (1.75)
x - cylindrical concave lens (1.50)
y - cylindrical concave lens (1.25)
z - cylindrical concave lens (1.)
a2 - cylindrical concave lens (.75)
b2 - cylindrical concave lens (.50)
c2 - cylindrical concave lens (.25)
d2 - spherical concave lens (8.)
e2 - spherical concave lens (7.)
f2 - spherical concave lens (6.50)
g2 - spherical concave lens (6.)
h2 - spherical concave lens (5.50)
i2 - spherical concave lens (5.)
j2 - spherical concave lens (4.50)
k2 - spherical concave lens (4.)
l2 - spherical concave lens (3.50)
m2 - spherical concave lens (3.25)
n2 - spherical concave lens (3.)
o2 - spherical concave lens (2.75)
p2 - spherical concave lens (2.50)
q2 - spherical concave lens (2.25)
r2 - spherical concave lens (2.)
s2 - spherical concave lens (1.75)
t2 - spherical concave lens (1.50)
u2 - spherical concave lens (1.25)
v2 - spherical concave lens (1.)
w2 - spherical concave lens (.75)
x2 - spherical concave lens (.50)
y2 - spherical concave lens (.25)
z2 - concave spherical convex lens (20.)
a3 - concave spherical convex lens (16.)
b3 - concave spherical convex lens (13.)
c3 - concave spherical convex lens (11.)
d3 - concave spherical convex lens (10.)
e3 - concave spherical convex lens (9.)
f3 - cylindrical concave lens (6.)
g3 - cylindrical concave lens (5.)
h3 - cylindrical concave lens (4.50)
i3 - cylindrical concave lens (4.)
j3 - cylindrical concave lens (3.50)
k3 - cylindrical concave lens (3.)
l3 - cylindrical concave lens (2.75)
m3 - cylindrical concave lens (2.50)
n3 - cylindrical concave lens (2.25)
o3 - cylindrical concave lens (2.)
p3 - cylindrical concave lens (1.75)
q3 - cylindrical concave lens (1.50)
r3 - cylindrical concave lens (1.25)
s3 - cylindrical concave lens (1.)
t3 - cylindrical concave lens (.75)
u3 - cylindrical concave lens (.50)
v3 - cylindrical concave lens (.25)
w3 - spherical concave lens (8.)
x3 - spherical concave lens (7.)
y3 - spherical concave lens (6.50)
z3 - spherical concave lens (6.)
a4 - spherical concave lens (5.50)
b4 - spherical concave lens (5.)
c4 - spherical concave lens (4.50)
d4 - spherical concave lens (4.)
e4 - spherical concave lens (3.50)
f4 - spherical concave lens (3.25)
g4 - spherical concave lens (3.)
h4 - spherical concave lens (2.75)
i4 - spherical concave lens (2.50)
j4 - spherical concave lens (2.25)
k4 - spherical concave lens (2.)
l4 - spherical concave lens (1.75)
m4 - spherical concave lens (1.50)
n4 - spherical concave lens (1.25)
o4 - spherical concave lens (1.)
p4 - spherical concave lens (.75)
q4 - spherical concave lens (.50)
r4 - spherical concave lens (.25)
s4 - cylindrical convex lens (6.)
t4 - cylindrical convex lens (5.)
u4 - cylindrical convex lens (4.50)
v4 - cylindrical convex lens (4.)
w4 - cylindrical convex lens (3.50)
x4 - cylindrical convex lens (3.)
y4 - cylindrical convex lens (2.75)
z4 - cylindrical convex lens (2.50)
a5 - cylindrical convex lens (2.25)
b5 - cylindrical convex lens (2.)
c5 - cylindrical convex lens (1.75)
d5 - cylindrical convex lens (1.50)
e5 - cylindrical convex lens (1.25)
f5 - cylindrical convex lens (1.)
g5 - cylindrical convex lens (.75)
h5 - cylindrical convex lens (.50)
i5 - cylindrical convex lens (.25)
j5 - spherical convex lens (8.)
k5 - spherical convex lens (7.)
l5 - spherical convex lens (6.50)
m5 - spherical convex lens (6.)
n5 - spherical convex lens (5.50)
o5 - spherical convex lens (5.)
p5 - spherical convex lens (4.50)
q5 - spherical convex lens (4.)
r5 - spherical convex lens (3.50)
s5 - spherical convex lens (3.25)
t5 - spherical convex lens (3.)
u5 - spherical convex lens (2.75)
v5 - spherical convex lens (2.50)
w5 - spherical convex lens (2.25)
x5 - spherical convex lens (2.)
y5 - spherical convex lens (1.75)
z5 - spherical convex lens (1.50)
a6 - spherical convex lens (1.25)
b6 - spherical convex lens (1.)
c6 - spherical convex lens (.75)
d6 - spherical convex lens (.50)
e6 - spherical convex lens (.25)
f6 - cylindrical convex lens (6.)
g6 - cylindrical convex lens (5.)
h6 - cylindrical convex lens (4.50)
i6 - cylindrical convex lens (4.)
j6 - cylindrical convex lens (3.50)
k6 - cylindrical convex lens (3.)
l6 - cylindrical convex lens (2.75)
m6 - cylindrical convex lens (2.50)
n6 - cylindrical convex lens (2.25)
o6 - cylindrical convex lens (2.)
p6 - cylindrical convex lens (1.75)
q6 - cylindrical convex lens (1.50)
r6 - cylindrical convex lens (1.25)
s6 - cylindrical convex lens (1.)
t6 - cylindrical convex lens (.75)
u6 - cylindrical convex lens (.50)
v6 - cylindrical convex lens (.25)
w6 - spherical convex lens (8.)
x6 - spherical convex lens (7.)
y6 - spherical convex lens (6.50)
z6 - spherical convex lens (6.)
a7 - spherical convex lens (5.50)
b7 - spherical convex lens (5.)
c7 - spherical convex lens (4.50)
d7 - spherical convex lens (4.)
e7 - spherical convex lens (3.50)
f7 - spherical convex lens (3.25)
g7 - spherical convex lens (3.)
h7 - spherical convex lens (2.75)
i7 - spherical convex lens (2.50)
j7 - spherical convex lens (2.25)
k7 - spherical convex lens (2.)
l7 - spherical convex lens (1.75)
m7 - spherical convex lens (1.50)
n7 - spherical convex lens (1.25)
o7 - spherical convex lens (1.)
p7 - spherical convex lens (.75)
q7 - spherical convex lens (.50)
r7 - spherical convex lens (.25)
s7 - lens (10. ^)
t7 - lens (8. ^)
u7 - lens (6. ^)
v7 - lens (5. ^)
w7 - lens (4. ^)
x7 - lens (3. ^)
y7 - lens (3. ^)
z7 - lens (2. ^)
a8 - lens (2. ^)
b8 - lens (1. ^)
c8 - lens (1. ^)
d8 - lens
e8 - lens
f8 - lens (4.)
g8 - lens (3.)
h8 - lens
i8 - lens
j8 - lens
k8 - lens
l8 - lens
m8 - lens (incomplete)
Provenance
Originally owned and used by Dr. F. X. O'Connor; donated by Miss Helen Cobb to Dr. A. A. Travill for the Queen's University Faculty of Medicine Collection
Maker
Geneva Optical Co.
Site Made (City)
Chicago
Site Made (State)
Illinois
Site Made (Country)
United States of America
Dates
1900
1930
circa 1900-1930
Material
metal: silver
wood: brown
leather: black
ivory: beige
fabric: red
plastic: black
paper: off-white
Inscriptions
Ivory label on inside box bottom reads, "Geneva Optical Co. // CHICAGO // St. Louis Minneapolis // Cincinatti Des Moines"; the inside top of the case is labelled (top to bottom) as holding, "CONCAVE SPHERICAL CONVEX // 20.0 // 16.0 // 13.0 // 11.0 // 10.0 // 9.0 // CYLINDRICAL CONCAVE // 6.00 // 5.00 // 4.50 // 4.00 // 3.50 // 3.00 // 2.75 // 2.50 // 2.25 // 2.00 // 1.75 // 1.50 // 1.25 // 1.00 // 0.75 // 0.50 // 0.25 // SPHERICAL CONCAVE // 8.00 // 7.00 // 6.50 // 6.00 // 5.50 // 5.00 // 4.50 // 4.00 // 3.50 // 3.25 // 3.00 // 2.75 // 2.50 // 2.25 // 2.00 // 1.75 // 1.50 // 1.25 // 1.00 // 0.75 // 0.50 // 0.25"; the inside bottom of the case is labelled (top to bottom) as holding, "CYLINDRICAL CONVEX // 6 .00 // 5.00 // 4.50 // 4.00 // 3.50 // 3.00 // 2.75 // 2.50 // 2.25 // 2.00 // 1.75 // 1.50 // 1.25 // 1.00 // 0.75 // 0.50 // 0.25 // SPHERICAL CONVEX // 8.00 // 7.00 // 6.50 // 6 .00 // 5.50 // 5.00 // 4.50 // 4.00 // 3.50 // 3.25 // 3.00 // 2.75 // 2.50 // 2.25 // 2.00 // 1.75 // 1.50 // 1.25 // 1.00 // 0.75 // 0.50 // 0.25"; right side top of case has section perpendicular to main section, labelled right to left: "1. // 2. // 3. // 4. // 5. // 6. // 8. // 10."; (d) the inside edge of the bar above the lenses has the words, "OCULUS // IMPERIAL OPTICAL CO." stamped into the metal; the inside top edge of the nose bridge is stamped "GERMANY"; both side bars have the numbers, "90 // 95 // 100 // 105 // 110 // 115 // 120 // 125" stamped into the metal; the outside edge of the bar above the lenses has an incremented scale above each lens and the numbers "40 // 35 // 30 // 25"; the outside edge of the nose bridge has an incremented scale and the numbers "5 // 0 // 5 // 10" as well as the word "OCULUS" stamped in the metal; each lens has an incremented scale around its outer edge and the numbers "30 // 20 // 10 // 180 // 170 // 160 // 150 // 140 // 130 // 120 // 110 // 90 // 80 // 70 // 60 // 50 // 40" on the left lens and the numbers "140 // 130 // 120 // 110 // 90 // 80 // 70 // 60 // 50 // 40 // 30 // 20 // 10 // 0 // 170 // 160 // 150" on the right side; (e) the centre top of the ruler has the words, "PRESCRIBE TONE-LITE CORECTAL LENSES FOR GENERAL USE"; the upper top of the ruler is incremented in "Millimeters" and has the numbers, "0 // 10 // 20 // 30 // 40 // 50 // 60 // 70 // 80 // 90 // 100 // 110 // 120 // 130 // 140 // 150"; the upper bottom of the ruler is incremented in "INCHES" and has the numbers "0 // 1 // 2 // 3 // 4 // 5 // 6" (f) the card reads, "UNIVERSAL PUPILOMETER" and has three scales printed across the middle in millimetres and inches; the bottom of the card reads, "GLOBE OPTICAL COMPANY // BOSTON, MASS., U.S.A. // Augusta, Me. // Burlington, Vt. // Springfield, Mass. // Bridgeport, Conn. // Hartford, Conn. // Worcester, Mass. // New Haven, Conn. // Providence, R.I. // Lewiston, Me."; (g-q7) both sides of the holding piece are stamped with a number, starting with (g) and ending with (q7): "20."; "16."; "13."; "11."; "10."; "9."; "6."; "5."; "4.50"; "4."; "3.50"; "3."; "2.75"; "2.50"; "2.25"; "2."; "1.75"; "1.50"; "1.25"; "1."; ".75"; ".50"; ".25"; "8."; "7."; "6.50"; "6."; "5.50"; "5."; "4.50"; 4."; "3.50"; "3.25"; "3."; "2.75"; "2.50"; "2.25"; "2."; "1.75"; "1.50"; "1.25"; "1."; ".75"; ".50"; ".25"; "20."; "16."; "13."; "11"; "10"; "9."; "6."; "5."; "4.50"; "4."; "3.50"; "3."; "2.75"; "2.50"; "2.25"; "2."; "1.75"; "1.50"; "1.25"; "1."; ".75"; ".50"; ".25"; "8."; "7."; "6.50"; "6."; "5.50"; "5.";"4.50"; "4."; "3.50"; "3.25"; "3."; "2.75"; "2.50"; "2.25"; "2."; "1.75"; "1.50"; "1.25"; "1."; ".75"; ".50"; ".25"; "6."; "5."; "4.50"; "4."; "3.50"; "3."; "2.75"; "2.50"; "2.25"; "2."; "1.75"; "1.50"; "1.25"; "1."; ".75"; ".50"; ".25"; "8."; "7."; "6.50"; "6."; "5.50"; "5."; "4.50"; "4."; "3.50"; "3.25"; "3."; "2.75"; "2.50"; "2.25"; "2."; "1.75"; "1.50"; "1.25"; "1."; ".75"; ".50"; ".25"; "6."; "5."; "4.50"; "4."; "3.50"; "3."; "2.75"; "2.50"; "2.25"; "2."; "1.75"; "1.50"; "1.25"; "1."; ".75"; ".50"; ".25"; "8."; "7."; "6.50"; "6."; "5.50"; "5.";"4.50"; "4."; "3.50"; "3.25"; "3."; "2.75"; "2.50"; "2.25"; "2."; "1.75"; "1.50"; "1.25"; "1."; ".75"; ".50"; (r7) one side of holding piece is engraved, ".25"; (s7-c8) both sides of holding piece are stamped, starting with (s7) and ending with (c8) (there is an open triangle after each number, denoted by ^): "10. ^ "; "8.^"; "6.^"; "5.^"; "4.^"; "3.^"; "3.^"; "2.^"; "2.^"; "1.^"; "1.^"
Permanent Location
Storage Room 0010
0010-E4-4
Dimension Notes
a - case (closed) - Length 44.2 cm x Width 18.0 cm x Depth 10.4 cm
b-c - inner cover - Length 42.1 cm x Width 10.7 cm x Depth 0.5 cm
d - eyeglass frame (folded) - Length 16.5 cm x Width 7.8 cm x Depth 3.8 cm
e - ruler - Length 16.2 cm x Width 2.0 cm x Depth 0.3 cm
f - universal pupilometer card - Length 12.7 cm x Width 5.7 cm
g - h - concave spherical convex lens (20.) - Length 4.5 cm x Width 3.2 cm x Depth 0.5 cm
I - j - concave spherical convex lens (13.) - Length 4.5 cm x Width 3.2 cm x Depth 0.4 cm
k –l - concave spherical convex lens (10.) - Length 4.5 cm x Width 3.2 cm x Depth 0.3 cm
l - concave spherical convex lens (9.) - Length 4.5 cm x Width 3.2 cm x Depth 0.3 cm
m -n - cylindrical concave lens (6.) - Length 4.5 cm x Width 3.2 cm x Depth 0.3 cm
o –y2 - cylindrical concave lens (4.50) - Length 4.5 cm x Width 3.2 cm x Depth 0.2 cm
z2 – a3 - concave spherical convex lens (20.) - Length 4.5 cm x Width 3.2 cm x Depth 0.5 cm
b3 –c3 - concave spherical convex lens (13.) - Length 4.5 cm x Width 3.2 cm x Depth 0.4 cm
d3 – g3 - concave spherical convex lens (10.) - Length 4.5 cm x Width 3.2 cm x Depth 0.3 cm
h3 – r4 - cylindrical concave lens (4.50) - Length 4.5 cm x Width 3.2 cm x Depth 0.2 cm
s4 – t4 - cylindrical convex lens (6.) - Length 4.5 cm x Width 3.2 cm x Depth 0.4 cm
u4 – v4 - cylindrical convex lens (4.50) - Length 4.5 cm x Width 3.2 cm x Depth 0.3 cm
w4 – i5- cylindrical convex lens (3.50) - Length 4.5 cm x Width 3.2 cm x Depth 0.2 cm
j5 - l5 - spherical convex lens (8.) - Length 4.5 cm x Width 3.2 cm x Depth 0.3 cm
m5 – e6 - spherical convex lens (6.) - Length 4.5 cm x Width 3.2 cm x Depth 0.2 cm
e6 - spherical convex lens (.25) - Length 4.5 cm x Width 3.2 cm x Depth 0.2 cm
f6 – g6 - cylindrical convex lens (6.) - Length 4.5 cm x Width 3.2 cm x Depth 0.4 cm
h6 – j6 - cylindrical convex lens (4.50) - Length 4.5 cm x Width 3.2 cm x Depth 0.3 cm
j6 – v6 - cylindrical convex lens (3.50) - Length 4.5 cm x Width 3.2 cm x Depth 0.2 cm
w6 – y6 - spherical convex lens (8.) - Length 4.5 cm x Width 3.2 cm x Depth 0.3 cm
z6 – r7 - spherical convex lens (6.) - Length 4.5 cm x Width 3.2 cm x Depth 0.2 cm
s7 - lens (10. ^) - Length 4.5 cm x Width 3.2 cm x Depth 0.7 cm
t7 - lens (8. ^) - Length 4.5 cm x Width 3.2 cm x Depth 0.6 cm
u7 - lens (6. ^) - Length 4.5 cm x Width 3.2 cm x Depth 0.5 cm
v7- w7 - lens (5. ^) - Length 4.5 cm x Width 3.2 cm x Depth 0.3 cm
x7 – j8 - lens (3. ^) - Length 4.5 cm x Width 3.2 cm x Depth 0.2 cm
k8 - lens - Length 4.5 cm x Width 3.2 cm x Depth 0.5 cm
l8 - lens - Length 4.5 cm x Width 3.2 cm x Depth 0.2 cm
m8 - lens (incomplete) - Depth 0.1 cm x Diam. 3.0 cm
Condition Remarks
(a) The case is very worn with many missing pieces from the leather and some minor corrosion visible on the metal; the contents of the kit are in good condition, with only minor wear and no corrosion visible on the metal parts; kit appears to be complete; #2: case is weathered; #3: the case is in very bad condition; the leather is peeling off and has holes in it; #4: same comment as #3.
Copy Type
Original
Reference Types
Document
Reference Comments
Previous number #665; Faculty of Medicine Collection 1984 Inventory
Research Facts
Also known as "oculists' trial case."
Images
Less detail

dental x-ray film box

https://mhc.andornot.com/en/permalink/artifact13450
Dates
1930
1935
1930-1935
Collection
Dr. Ralph and Mrs. Olga Crawford Canadian Dental Collection
Category
Diagnostic & Treatment Artifacts
Classification
Dental
Accession Number
010020329 a-c
Description
Dental x-ray film box; yellow and silver metal rectangular box (a) and lid (b) with rounded corners, enamelled in orange and blue; product and manufacturer's information printed on top of lid and bottom of box; sides of box with white semi-circle with rays coming out of it; white paper attached ins…
  3 images  
Accession Number
010020329 a-c
Collection
Dr. Ralph and Mrs. Olga Crawford Canadian Dental Collection
Category
Diagnostic & Treatment Artifacts
Classification
Dental
MeSH Heading
Radiography, Dental
Dental Equipment
Description
Dental x-ray film box; yellow and silver metal rectangular box (a) and lid (b) with rounded corners, enamelled in orange and blue; product and manufacturer's information printed on top of lid and bottom of box; sides of box with white semi-circle with rays coming out of it; white paper attached inside lid, printed with black ink, states manufacturer's guarantee, expiry date stamped with purple ink; box contains 19 black rectangular x-ray films in red rubber frames with rounded corners (c)
Number Of Parts
3
Part Names
a - box - Size: Length 7.1 cm x Width 4.6 cm x Depth 3.5 cm
b - lid - Size: Length 7.2 cm x Width 4.7 cm x Depth 0.8 cm
c - films - Size: Length 4.3 cm x Width 3.3 cm x Depth 0.3 cm
Provenance
Transfer from the Dental Canada Fund; previously housed in the Dentistry Canada Museum (Ottawa)
Maker
General Electric X-Ray Corporation
Site Made (City)
Chicago
Site Made (State)
Illinois
Site Made (Country)
United States of America
Dates
1930
1935
1930-1935
Date Remarks
Printed on artefact
Material
metal: yellow, silver
enamel: white, orange, blue
rubber: red
film: black
paper: white
ink: black, purple
Inscriptions
(a) Printed on bottom: "VICTOR-BOLIN // DENTAL X-RAY FILMS // LIGHTNING // GENERAL ELECTRIC // X-RAY CORPORATION // CHICAGO BRANCHES IN PRINCIPAL CITIES U.S.A. // FORMERLY VICTOR X-RAY CORPORATION // MADE IN U.S.A. PAT. NO. 1537925"; (b) printed on top: "VICTOR-BOLIN // DENTAL X-RAY FILMS // LIGHTNING // GENERAL ELECTRIC // X-RAY CORPORATION // CHICAGO BRANCHES IN PRINCIPAL CITIES U.S.A. // FORMERLY VICTOR X-RAY CORPORATION // MADE IN U.S.A. PAT. NO. 1537925"; printed inside lid: "This Box Contains Safety Film // Guarantee Expires JUN 1936 // In case of complaint for any reason please // return this slip with sample films both used // and unused to your dealer or direct to // GENERAL ELECTRIC // X-RAY CORPORATION // 2012 Jackson Boulevard Chicago,Ill.,U.S.A."; (c) embossed on film packages: "LICENSED FOR USE WITH // ORIGINAL CONTENTS ONLY // U.S.PAT. MAY 12, 1925 // VICTOR-BOLIN FILM // G.E.X-RAY CORPORATION // MADE IN // CHICAGO, U.S.A."
Permanent Location
Storage Room 0010
0010-B
Condition Remarks
Box is slightly tarnished, scratched on outside
Copy Type
Original
Reference Types
Internet
JPG
Reference Comments
"Gendex Dental Systems" website; "Free Patent Online" website
CD #1
Research Facts
Dr Ralph and Mrs Olga Crawford donated their extensive Canadian dental collection to the DCF to create the museum in 1997; further donations were received while Dr Crawford was Curator Emeritus at the Dental Canada Museum until its closure in 2008; this item was donated by Dr. Irwin G. Kreisman from Ottawa, Ontario; the Victor Electric Corporation began making x-ray machines in 1896; they became the Victor X-Ray Corporation in 1920, were acquired by General Electric in 1926, and by 1930 the company was renamed the General Electric X-Ray Corporation; the x-ray film design was filed in 1922 and patented in 1925
Images
Less detail

dental x-ray film box

https://mhc.andornot.com/en/permalink/artifact13451
Dates
1930
1935
circa 1930-1935
Collection
Dr. Ralph and Mrs. Olga Crawford Canadian Dental Collection
Category
Diagnostic & Treatment Artifacts
Classification
Dental
Accession Number
010020330 a-b
Description
Dental x-ray film box; grey and silver metal rectangular box (a) and lid (b) with rounded corners, enamelled in orange and blue; product and manufacturer's information printed on top of lid and bottom of box; sides of box with white semi-circle with rays coming out of it; box is empty
  2 images  
Accession Number
010020330 a-b
Collection
Dr. Ralph and Mrs. Olga Crawford Canadian Dental Collection
Category
Diagnostic & Treatment Artifacts
Classification
Dental
MeSH Heading
Radiography, Dental
Dental Equipment
Description
Dental x-ray film box; grey and silver metal rectangular box (a) and lid (b) with rounded corners, enamelled in orange and blue; product and manufacturer's information printed on top of lid and bottom of box; sides of box with white semi-circle with rays coming out of it; box is empty
Number Of Parts
2
Part Names
a - box - Size: Length 7.1 cm x Width 4.6 cm x Depth 3.5 cm
b - lid - Size: Length 7.2 cm x Width 4.7 cm x Depth 0.8 cm
Provenance
Transfer from the Dental Canada Fund; previously housed in the Dentistry Canada Museum (Ottawa)
Maker
General Electric X-Ray Corporation
Site Made (City)
Chicago
Site Made (State)
Illinois
Site Made (Country)
United States of America
Dates
1930
1935
circa 1930-1935
Date Remarks
Based on similar item
Material
metal: grey, silver
enamel: white, orange, blue
Inscriptions
(a) Printed on bottom: "VICTOR-BOLIN // DENTAL X-RAY FILMS // LIGHTNING // GENERAL ELECTRIC // X-RAY CORPORATION // CHICAGO BRANCHES IN PRINCIPAL CITIES U.S.A. // FORMERLY VICTOR X-RAY CORPORATION // MADE IN U.S.A. PAT. NO. 1537925"; (b) printed on top: "VICTOR-BOLIN // DENTAL X-RAY FILMS // LIGHTNING // GENERAL ELECTRIC // X-RAY CORPORATION // CHICAGO BRANCHES IN PRINCIPAL CITIES U.S.A. // FORMERLY VICTOR X-RAY CORPORATION // MADE IN U.S.A. PAT. NO. 1537925"
Permanent Location
Storage Room 0010
0010-B
Condition Remarks
Box is tarnished all over, scratched on outside
Copy Type
Original
Reference Types
Internet
Other
JPG
Reference Comments
"Gendex Dental Systems" website; "Free Patent Online" website; 010020329
CD #1
Research Facts
Dr Ralph and Mrs Olga Crawford donated their extensive Canadian dental collection to the DCF to create the museum in 1997; further donations were received while Dr Crawford was Curator Emeritus at the Dental Canada Museum until its closure in 2008; this item was donated by Dr. Ralph Crawford from Winnipeg, Manitoba; the Victor Electric Corporation began making x-ray machines in 1896; they became the Victor X-Ray Corporation in 1920, were acquired by General Electric in 1926, and by 1930 the company was renamed the General Electric X-Ray Corporation; the x-ray film design was filed in 1922 and patented in 1925
Images
Less detail

The Rhythm of Sterility and Fertility in Women 4th Revised Edition [book]

https://mhc.andornot.com/en/permalink/artifact15215
Dates
1934
circa 1934
Collection
Tumak Collection
Category
Archival Items
Education Artifacts
Classification
Archival, Publications
Education
Gynaecology
Literature
Accession Number
015011003
Description
Small hard cover book with black vinyl covers and a sewn binding; tan pages with black print; title "The Rhythm" is printed in the top centre of the front cover in gold in capital letters with three straight horizontal lines under it and a pointed line going up, then down through the straight lines…
Accession Number
015011003
Author
Leo J. Latz, A.B., M.D., LL.D.
Collection
Tumak Collection
Category
Archival Items
Education Artifacts
Classification
Archival, Publications
Education
Gynaecology
Literature
MeSH Heading
Archival
Education, Medical
Books
Menstrual Cycle
Menstruation
Sex Counseling
Contraception
Description
Small hard cover book with black vinyl covers and a sewn binding; tan pages with black print; title "The Rhythm" is printed in the top centre of the front cover in gold in capital letters with three straight horizontal lines under it and a pointed line going up, then down through the straight lines; on the first page there is a blue stamp for the library from which the book came; the book is divided into three parts (physiological, practical, and ethical aspects) and seventy five chapters, dealing with sex, sterility, fertility, marriage, pregnancy, female sexual organs, menstruation and the menstrual cycle, contraception, natural birth control, and contraception in relation to religion and God; the copyright page reads that the book was published with "Ecclesiastical Approbation"; on the last page, a portion of an envelope has been glued in and is open at the top; 128 pages.
Number Of Parts
1
Provenance
Belonged to donor.
Maker
Latz Foundation
Site Made (City)
Chicago
Site Made (State)
Illinois
Site Made (Country)
U.S.A.
Dates
1934
circa 1934
Date Remarks
Copyright Date
Material
paper: tan
vinyl: black
ink: black, gold, blue
Inscriptions
Printed on front cover: "THE RHYTHM // LEO J. LATZ, M. D."; stamped on first page: "BIBLIOTHEQUE PROVINCIALE // 430 CHEMIN MONTREAL // OTTAWA 7, ONTARIO"; printed on title page: "THE RHYTHM // of // Sterility and Fertility // in Women // A Discussion of the Physiological, Practical, // and Ethical Aspects of the Discoveries // of Drs. K. Ogino (Japan) and H. // Knaus (Austria) Regarding // the Periods when Con- // ception Is Impos- // sible and when // Possible // by // Leo J. Latz, A.B., M.D., LL.D. // Member of the Staffs of Loyola // University Medical School, Alexian // Brothers' Hospital and St. Elizabeth Hospital. // Fourth Revised Edition // Sixtieth Thousand // Published by // LATZ FOUNDATION // (Corporation Not for Profit) // REPUBLIC BUILDING // CHICAGO, ILLINOIS".
Permanent Location
Storage Room 2005
2005-3
Length
10.7 cm
Width
1.5 cm
Height
15.6 cm
Unit Of Measure
centimeters
Condition Remarks
Sticker residue near bottom of spine and covers, vinyl coming off in top right corner of front cover and bottom of back cover.
Copy Type
original
Reference Types
Websites
Reference Comments
"Leo J. Latz and "The Rhythm"", DIttrick Museum, March 16, 2010: http://dittrick.blogspot.com/2010/03/leo-j-latz-and-rhythm.html
"Highlights of the Percy Skuy History of Contraception Gallery: Rhythm Method", Case Western Reserve University: https://case.edu/affil/skuyhistcontraception/online-2012/Rhythm-method.html
"Book, ‘The rhythm of sterility and fertility in women’ by Leo J. Latz.", Museum of Applied Arts & Sciences: https://collection.maas.museum/object/345735
"Dr. Leo Latz dies, was originator of 'rhythm method'", Chicago Tribune, The Baltimore Sun, May 4, 1994: https://www.baltimoresun.com/news/bs-xpm-1994-05-04-1994124154-story.html
Research Facts
Dr. Leo J. Latz was one of the pioneers of the "rhythm" method of birth control, now often called natural family planning. The Rhythm method asserts that women are only fertile for five or six days of their menstrual cycle, and so it is unlikely for a woman to get pregnant outside of those days, even without material methods of birth control. His book went through twenty-six editions.
The Rhythm Method is the only method of birth control which received the official approval of the Catholic Church, having been approved by Pope Pius XII in 1951. In 1955, a survey of Catholic women found that over 65% of the women surveyed said they used the Rhythm method.
In 1934, Latz, a devout Catholic, was fired from his position at Loyola University, most likely over his involvment with the cause of Rhythm.
Less detail

Health-o-Meter weight scale

https://mhc.andornot.com/en/permalink/artifact14529
Dates
1929
1940
circa 1929-1940
Collection
Morrison Collection
Category
Home Health Care
Classification
Patient Care
Accession Number
016005001
Description
Step-on portable Health-o-Meter weight scale by Continental Scale Works; green painted metal body with raised 21.0 cm diameter dome shaped glass enclosed circular scale measurement guide printed on paper; black rubber ribbed top; measures in pounds from 0 to 249.
  4 images  
Accession Number
016005001
Collection
Morrison Collection
Category
Home Health Care
Classification
Patient Care
MeSH Heading
Weights and Measures
Diet, Reducing
Description
Step-on portable Health-o-Meter weight scale by Continental Scale Works; green painted metal body with raised 21.0 cm diameter dome shaped glass enclosed circular scale measurement guide printed on paper; black rubber ribbed top; measures in pounds from 0 to 249.
Number Of Parts
1
Provenance
Belonged to owner's husband's grandfather, Dr. James Willis Mackie, a graduate of Queens Faculty of Medicine program in its earliest years and was the local doctor of Lansdowne, Ontario for many years until his death in 1950.
Maker
Continental Scale works
Site Made (City)
Chicago
Site Made (State)
Illinois
Site Made (Country)
USA
Dates
1929
1940
circa 1929-1940
Date Remarks
Pat'd date
Material
metal: green
rubber: black
glass: transparent
ink: black, green, red
Inscriptions
Printed on scale measurent guide: "MADE IN U.S.A. // Health-o-Meter // REGISTERED TRADE MARK // PAT'D OCT 8, 1929 No. 79,578 // OTHER PZTENTS PENDING // CONTINENTAL SCALE WORKS // CHICAGO, ILL. // NOT LEGAL FOR TRADE"; Printed on sticker: "THE J. F HARTZ CO. LIMITED // SICK ROOM SUPPLIES // TORONTO & MONTREAL"
Permanent Location
Storage Room 0007
0007-F2-1
Length
40.0 cm
Width
24.6 cm
Height
18.0 cm
Unit Of Measure
centimeters
Condition Remarks
Scale still works, metal is heavily rusted in some parts, scuffed and paint chipped, paint spots on black rubber top, inside scale paper yellowing
Images
Less detail

Lesson Plans 1-53 [textbook]

https://mhc.andornot.com/en/permalink/artifact12493
Dates
1939
1941
circa 1939-1941
Collection
Mona Winterburn Collection
Category
Archival Items
Classification
Archival, Publications
Accession Number
009009001
Description
Hard-cover textbook consisting of 53 lesson booklets; booklets are enclosed between heavy paper-covered cardboard covers; shoelace string has been laced through two metal eyelets binding the cover and booklets; a nurse's portrait has been stamped on front cover above the maker's name; the textbook …
  2 images  
Accession Number
009009001
Collection
Mona Winterburn Collection
Category
Archival Items
Classification
Archival, Publications
MeSH Heading
Textbooks
Nursing -- handbooks
Description
Hard-cover textbook consisting of 53 lesson booklets; booklets are enclosed between heavy paper-covered cardboard covers; shoelace string has been laced through two metal eyelets binding the cover and booklets; a nurse's portrait has been stamped on front cover above the maker's name; the textbook contains a collection of lessons and activities.
Number Of Parts
1
Provenance
Textbook owned by Mona Winterburn's great-aunt.
Maker
Chicago School of Nursing
Site Made (City)
Chicago
Site Made (State)
Illinois
Site Made (Country)
United States of America
Dates
1939
1941
circa 1939-1941
Date Remarks
Date written on individual booklets
Material
paper: cream, blue
ink: black, silver
fabric: blue
metal: silver
Inscriptions
Stamped on front cover: "CHICAGO SCHOOL // OF // NURSING // Founded 1899"; printed on first page: "Anne Leigh - Lila Steele // Ellis"; "Mrs Herb. Steele."; chapter titles: " History of Nursing and // Nursing Ethics"; " The General Care of the Patient"; "Symptoms and Signs of Disease"; "Typhoid Fever"; " Nursing Medical Cases"; "Nursing Contagious and Infectious Diseases"; "Medicines and Their Administration"; "Nursing Sick Children"; "Drugs and Other Remedies"; "Emergencies and First Aid"; "The Excretory System"; "Diseases of the Respiratory Organs"; "Diseases of the Stomach and // Digestive Organs"; "Nursing in Constitutional and // Chronic Diseases"; "The Nervous System and the // Special Senses"; "Surgical and Obstetrical Disinfection."; "Anesthesia"; "Bandaging"; "Massage"; "Anatomy and Hygiene of the Female // Pelvic Organs"; "The Puerperium or Lying-in Period"; "Care of the New-Born"; "Diseases of Women"; "Gynecological Operations"
Permanent Location
Storage Room 2005
2005-3
Dimension Notes
Length 23.3 cm x Width 15.4 cm x Depth 6.4 cm
Condition Remarks
Pages are faded; spine is ripped at the bottom; the cover is worn
Copy Type
Original
Reference Types
Person
JPG
Reference Comments
Mrs. Mona Winterburn; CD #1
Research Facts
Mrs. Winterburn's great-aunt studied nursing in Chicago; she held nursing positions in Toronto and Hamilton.
Images
Less detail

dental x-ray timer

https://mhc.andornot.com/en/permalink/artifact13123
Dates
1920
1930
circa 1920-1930
Collection
Dr. Ralph and Mrs. Olga Crawford Canadian Dental Collection
Category
Diagnostic & Treatment Artifacts
Classification
Dental
Accession Number
010020034
Description
Black-enamelled metal x-ray timer; cylinder with front and back faces attached to long handle; silver knob and dial in middle of face; notches and numbers from one to ten embossed in yellow metal on face; face on back has chart showing recommended exposure times for all teeth and different age grou…
  2 images  
Accession Number
010020034
Collection
Dr. Ralph and Mrs. Olga Crawford Canadian Dental Collection
Category
Diagnostic & Treatment Artifacts
Classification
Dental
MeSH Heading
Dentistry
Radiography -- instrumentation
Description
Black-enamelled metal x-ray timer; cylinder with front and back faces attached to long handle; silver knob and dial in middle of face; notches and numbers from one to ten embossed in yellow metal on face; face on back has chart showing recommended exposure times for all teeth and different age groups; hole at top where timer can be placed on hook on x-ray unit; black rubber electrical wire coming from bottom
Number Of Parts
1
Provenance
Transfer from the Dental Canada Fund; previously housed in the Dentistry Canada Museum (Ottawa)
Maker
Victor X-ray Corporation
Site Made (City)
Chicago
Site Made (State)
Illinois
Site Made (Country)
United States of America
Dates
1920
1930
circa 1920-1930
Date Remarks
Based on donor's remarks
Material
metal: yellow
enamel: black
rubber: black
Inscriptions
Embossed on front: "VICTOR // TRADE MARK // REG. U.S. PAT. OFF. // MADE IN CHICAGO U.S.A. // SERIAL NO. 40684 // SECONDS"; embossed on back: "INTRA-ORAL // EXPOSURE CHART // VICTOR X-RAY CORP. // CHICAGO // U.S.A."
Permanent Location
Storage Room 0007
0007-D2-3
Dimension Notes
Length 24.8 cm x Width 8.8 cm x Depth 5.5 cm
Condition Remarks
Rubber wire broken at end, exposing wires inside; exposure chart faded; enamel chipped at top; screw missing at back
Copy Type
Original
Reference Types
Internet
JPG
Reference Comments
"Gendex Dental Systems" website
CD #9
Research Facts
Dr Ralph and Mrs Olga Crawford donated their extensive Canadian dental collection to the DCF to create the museum in 1997; further donations were received while Dr Crawford was Curator Emeritus at the Dental Canada Museum until its closure in 2008; this item perhaps goes with 010.020.036 or 010.020.042; the Victor Electric Corporation began making x-ray machines in 1896; they became the Victor X-Ray Corporation in 1920, were acquired by General Electric in 1926, and by 1930 the company was renamed the General Electric X-Ray Corporation
Images
Less detail

wall mounted dental x-ray unit

https://mhc.andornot.com/en/permalink/artifact13125
Dates
1920
1930
circa 1920-1930
Collection
Dr. Ralph and Mrs. Olga Crawford Canadian Dental Collection
Category
Diagnostic & Treatment Artifacts
Classification
Dental
Accession Number
010020036 a-c
Description
Metal wall mounted x-ray unit, enamelled in red and black to resemble varnished wood (a); I-shaped bracket to be mounted to wall; two pieces of metal lead to wheel at hinge; two more pieces of metal lead down to another hinge with two wheels at either side and metal coiled wire wound around them an…
  2 images  
Accession Number
010020036 a-c
Collection
Dr. Ralph and Mrs. Olga Crawford Canadian Dental Collection
Category
Diagnostic & Treatment Artifacts
Classification
Dental
MeSH Heading
Radiography, Dental -- instrumentation
MM= Radiography -- machine
Description
Metal wall mounted x-ray unit, enamelled in red and black to resemble varnished wood (a); I-shaped bracket to be mounted to wall; two pieces of metal lead to wheel at hinge; two more pieces of metal lead down to another hinge with two wheels at either side and metal coiled wire wound around them and leading into brass tubes; x-ray head, cylinder flattened at one side to fit atop rectangular base, attached via L-shaped piece of metal; black cone with white lines on side at centre of x-ray head base; handle attaches on either side; black-enamelled dials with gold writing on either side of head show angles from 0-90; rectangular control box (b) with sloping top has two gauges with clear glass coverings; silver-enamelled faces with black writing and black dials; bottom halves of gauges have silver coverings with cut-outs showing metal dial gears; left gauge shows ammeter and numbers 0-20, right gauge shows voltmeter and numbers 0-120; box is hollow underneath, with black metal cylinders holding gauges at top; pair of gold metal pliers (c)
Number Of Parts
3
Part Names
a - x-ray - Size: Length 81.0 cm x Width 54.0 cm x Depth 20.5 cm
b - control box - Size: Length 42.7 cm x Width 23.6 cm x Depth 14.9 cm
c - metal tool - Size: Length 11.4 cm x Width 3.1 cm x Depth 1.5 cm
Provenance
Transfer from the Dental Canada Fund; previously housed in the Dentistry Canada Museum (Ottawa)
Maker
Victor X-Ray Corp.
Site Made (City)
Chicago
Site Made (State)
Illinois
Site Made (Country)
United States of America
Dates
1920
1930
circa 1920-1930
Date Remarks
Based on donor's remarks
Material
metal: silver, yellow, black, yellow
enamel: red, black, silver, yellow, white
glass: clear
rubber: black
Inscriptions
(a) Printed on x-ray head: "SERIAL NO. 49928 // 104 VOLT 60 CY."; (b) printed on box: "MADE IN // CHICAGO, U.S.A. // TRADE VICTOR MARK // X-RAY CORP. // SERIAL NO. 48383 // 110 VOLT 14 AMP. // 60 CY."; printed on left gauge: "A.C. AMMETER // VICTOR // NO. 5082 // TYPE A O. // MADE IN U.S.A."; printed on right gauge: "A.C. VOLTMETER // VICTOR // NO. 5211 // TYPE A K. // MADE IN U.S.A."
Permanent Location
Storage Room W2
W2-536-4-2
Condition Remarks
Enamel peeling in places on x-ray head, especially at sides; brass tarnished on (a); glass cracked in multiple places on right gauge of (b)
Copy Type
Original
Reference Types
Book
Internet
JPG
Reference Comments
"The American Dentist", Richard Glenner et al., 1990, p. 111; "Gendex Dental Systems" website
CD #9
Research Facts
Dr Ralph and Mrs Olga Crawford donated their extensive Canadian dental collection to the DCF to create the museum in 1997; further donations were received while Dr Crawford was Curator Emeritus at the Dental Canada Museum until its closure in 2008; this item was donated by Dr. D. Christopher Clark from Vancouver, British Columbia; the Victor Electric Corporation began making x-ray machines in 1896; they became the Victor X-Ray Corporation in 1920, were acquired by General Electric in 1926, and by 1930 the company was renamed the General Electric X-Ray Corporation; as dental equipment became more technologically advanced and more specialized, offices could quickly become cluttered; wall mounted instruments helped make the best use of space available
Images
Less detail

wall mounted dental x-ray unit

https://mhc.andornot.com/en/permalink/artifact13131
Dates
1920
1930
circa 1920-1930
Collection
Dr. Ralph and Mrs. Olga Crawford Canadian Dental Collection
Category
Diagnostic & Treatment Artifacts
Classification
Dental
Accession Number
010020042
Description
Metal wall mounted x-ray unit, enamelled in black with gold decoration; I-shaped bracket to be mounted to wall; two pieces of metal lead to wheel at hinge; two more pieces of metal lead down to another hinge with two wheels at either side and metal coiled wire wound around them then leading into tw…
  1 image  
Accession Number
010020042
Collection
Dr. Ralph and Mrs. Olga Crawford Canadian Dental Collection
Category
Diagnostic & Treatment Artifacts
Classification
Dental
MeSH Heading
Radiography, Dental -- instrumentation
MM= Radiography -- machine
Description
Metal wall mounted x-ray unit, enamelled in black with gold decoration; I-shaped bracket to be mounted to wall; two pieces of metal lead to wheel at hinge; two more pieces of metal lead down to another hinge with two wheels at either side and metal coiled wire wound around them then leading into two tubes; x-ray head, cylinder flattened at one side to fit atop rectangular base, attached via L-shaped piece of metal; cone at centre of x-ray head base; handle attaches on either side; black-enamelled dials with gold writing on either side of head show patent numbers and manufacturing information, angles; fabric-covered wire runs around x-ray
Number Of Parts
1
Provenance
Transfer from the Dental Canada Fund; previously housed in the Dentistry Canada Museum (Ottawa)
Maker
Victor X-Ray Corp.
Site Made (City)
Chicago
Site Made (State)
Illinois
Site Made (Country)
United States of America
Dates
1920
1930
circa 1920-1930
Date Remarks
Based on donor's remarks
Material
metal: silver, yellow
enamel: black, yellow
fabric: yellow
rubber: white
Inscriptions
Printed on bracket: "VICTOR // TRADE MARK // REG. US. PAT. OFF. // [Illeg.] CHICAGO, U.S.A."; embossed on x-ray head: "SERIAL NO. 52081 // MADE IN CHICAGO, U.S.A. // VICTOR"; "THE COOLIDGE TUBE HEREIN CONTAINED IS NOT // LICENSED TO BE RE-EXHAUSTED OR // REPAIRED NOR IS THE METAL THEREIN // CONTAINED LICENSED TO BE USED // EXCEPT IN THIS PARTICULAR TUBE"
Permanent Location
Storage Room W2
W2-536-4-2
Dimension Notes
Length 72.0 cm x Width 59.0 cm x Depth 20.5 cm
Condition Remarks
Enamel heavily peeling off x-ray head; rubber on wire brittle, fabric heavily fraying; rust inside cone, around hinges, on metal coiled wire.
Copy Type
Original
Reference Types
Book
Internet
JPG
Reference Comments
"The American Dentist", Richard Glenner et al., 1990, p. 111; "Gendex Dental Systems" website
CD #9
Research Facts
Dr Ralph and Mrs Olga Crawford donated their extensive Canadian dental collection to the DCF to create the museum in 1997; further donations were received while Dr Crawford was Curator Emeritus at the Dental Canada Museum until its closure in 2008; this item was donated by Mr. Al Hunter from Winnipeg, Manitoba; the Victor Electric Corporation began making x-ray machines in 1896; they became the Victor X-Ray Corporation in 1920, were acquired by General Electric in 1926, and by 1930 the company was renamed the General Electric X-Ray Corporation; as dental equipment became more technologically advanced and more specialized, offices could quickly become cluttered; wall mounted instruments helped make the best use of space available
Images
Less detail

dental x-ray timer

https://mhc.andornot.com/en/permalink/artifact13191
Dates
1920
1930
circa 1920-1930
Collection
Dr. Ralph and Mrs. Olga Crawford Canadian Dental Collection
Category
Diagnostic & Treatment Artifacts
Classification
Dental
Accession Number
010020102
Description
Dental x-ray timer with alarm; round silver metal clock with two small feet at front; yellow metal back with knobs to set timer and clock; clear glass pane at front covers white paper face printed with black ink; face has minutes from 1-10 going counter-clockwise on outer circle and time from 0-2 h…
  3 images  
Accession Number
010020102
Collection
Dr. Ralph and Mrs. Olga Crawford Canadian Dental Collection
Category
Diagnostic & Treatment Artifacts
Classification
Dental
MeSH Heading
Dentistry
Radiography -- instrumentation
Description
Dental x-ray timer with alarm; round silver metal clock with two small feet at front; yellow metal back with knobs to set timer and clock; clear glass pane at front covers white paper face printed with black ink; face has minutes from 1-10 going counter-clockwise on outer circle and time from 0-2 hours in 1/4 hour intervals on inner circle; two black metal arrows point to the two circles; top of timer has round silver metal piece that rings when alarm goes off; small round metal handle at top
Number Of Parts
1
Provenance
Transfer from the Dental Canada Fund; previously housed in the Dentistry Canada Museum (Ottawa).
Maker
Victor X-ray Corporation
Site Made (City)
Chicago
Site Made (State)
Illinois
Site Made (Country)
United States of America
Dates
1920
1930
circa 1920-1930
Date Remarks
Based on company name
Material
metal: silver, yellow, black
glass: clear
paper: white
ink: black
Inscriptions
Printed on front: "MINUTE CIRCLE // HOUR CIRCLE // INTERVAL TIMER // VICTOR X-RAY CORPORATION // CHICAGO, ILL."; engraved on back: "ALARM // HAND SET // TIME KEY"
Permanent Location
Storage Room 0010
0010-B
Temporary Location
On display "Doctor's Treatment Room c1930" at Museum of Health Care 20 Feb 2016.
Dimension Notes
Length 12.5 cm x Width 9.0 cm x Depth 5.0 cm
Condition Remarks
Metal very tarnished all over; glass pane loose; legs covered in black electrical tape
Copy Type
Original
Reference Types
Internet
Other
JPG
Reference Comments
"Gendex Dental Systems" website; 010.020.034
CD #9
Research Facts
Dr Ralph and Mrs Olga Crawford donated their extensive Canadian dental collection to the DCF to create the museum in 1997; further donations were received while Dr Crawford was Curator Emeritus at the Dental Canada Museum until its closure in 2008; this item was donated by Joan Burbank from Victoria, British Columbia; the Victor Electric Corporation began making x-ray machines in 1896; they became the Victor X-Ray Corporation in 1920, were acquired by General Electric in 1926, and by 1930 the company was renamed the General Electric X-Ray Corporation; this clock is intriguing due to the fact that it times minutes and hours, its smallest interval being 1/4 of a minute; while exposure times were slower than the present day during the 1920s, x-rays only took between 2-10 seconds, depending on the film and the tooth, and most x-ray units had timers attached; this was perhaps a timer for developing x-ray film
Images
Less detail

29 records – page 1 of 3.