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dental auto-mallet

https://mhc.andornot.com/en/permalink/artifact13403
Dates
1943
1950
circa 1943-1950
Collection
Dr. Ralph and Mrs. Olga Crawford Canadian Dental Collection
Category
Diagnostic & Treatment Artifacts
Classification
Dental
Accession Number
010020281 a-k
Description
McKenzie automatic amalgam condenser; clear rectangular plastic holder (a) with spaces for handpiece, condenser points; silver metal handpiece (b) with specially-designed black metal latch over tip; concentric ridged circles along bottom half, before cylindrical handpiece curves at a slight angle, …
  4 images  
Accession Number
010020281 a-k
Collection
Dr. Ralph and Mrs. Olga Crawford Canadian Dental Collection
Category
Diagnostic & Treatment Artifacts
Classification
Dental
MeSH Heading
Dental Instruments
MM= Dentistry, Operative -- mallet
Description
McKenzie automatic amalgam condenser; clear rectangular plastic holder (a) with spaces for handpiece, condenser points; silver metal handpiece (b) with specially-designed black metal latch over tip; concentric ridged circles along bottom half, before cylindrical handpiece curves at a slight angle, ending with a round opening; six silver metal condenser points fit into handpiece; one with curved end (c), one with oval end (d), one with flaring round, flat end (e), one with rounded, circular end (f), two with flat, round ends (g, h); two cylindrical driving cams (i, j) hold points in handpiece; white rectangular instruction sheet (k), printed with black ink on one side, states product's advantages, parts and directions
Number Of Parts
11
Part Names
a - holder - Size: Length 9.3 cm x Width 3.1 cm x Depth 0.9 cm
b - handpiece - Size: Length 8.2 cm x Width 1.5 cm x Depth 1.0 cm
c - condenser point - Size: Length 1.7 cm x Width 0.4 cm x Depth 0.2 cm
d - condenser point - Size: Length 1.7 cm x Width 0.3 cm x Depth 0.2 cm
e - condenser point - Size: Length 1.7 cm x Diam. 0.3 cm
f - condenser point - Size: Length 1.7 cm x Diam. 0.2 cm
g - condenser point - Size: Length 1.7 cm x Diam. 0.2 cm
h - condenser point - Size: Length 1.7 cm x Diam. 0.2 cm
i - cam - Size: Length 0.5 cm x Diam. 0.2 cm
j - cam - Size: Length 0.5 cm x Diam. 0.2 cm
k - sheet - Size: Length 27.9 cm x Width 9.2 cm x Depth 0.1 cm
Provenance
Transfer from the Dental Canada Fund; previously housed in the Dentistry Canada Museum (Ottawa)
Maker
Facility Products
Site Made (City)
Miami
Site Made (State)
Florida
Site Made (Country)
United States of America
Dates
1943
1950
circa 1943-1950
Date Remarks
Based on patent date
Material
metal: silver, black
plastic: clear
paper: white
ink: black
Inscriptions
(b) Engraved near bottom: "THE DENTAL SPECIALTY MFG. CO"
Permanent Location
(a-j): Storage Room 0010
0010-B
(k): Storage Room 2005
2005-2-5 Box 22
Condition Remarks
Sheet (k) is worn at edges, folds; metal on (b) tarnished
Copy Type
Original
Reference Types
Person
Internet
JPG
Reference Comments
James G. Brass; "Free Patents 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. James G. Brass from Comox, British Columbia; his father was a classmate of the inventor of this product, Olin G. McKenzie, at Northwestern University in the late 1930s; this item was patented in 1943; its primary objective was to provide a simple and efficient plugger construction which can be used in an ordinary drilling handpiece, specifically only with a change in the latch, not the handpiece itself
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mobile dental x-ray unit

https://mhc.andornot.com/en/permalink/artifact13103
Dates
1950
1960
circa 1950-1960
Collection
Dr. Ralph and Mrs. Olga Crawford Canadian Dental Collection
Category
Diagnostic & Treatment Artifacts
Classification
Dental
Accession Number
010020014
Description
Mobile dental x-ray unit, enamelled in black and silver; triangular base with wheels on bottom; black rubber electrical wire goes in and out of unit; silver metal tube leads up to black control box, with knob to adjust power and gauge showing number of volts; detachable black hand-held control hook…
  1 image  
Accession Number
010020014
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
Mobile dental x-ray unit, enamelled in black and silver; triangular base with wheels on bottom; black rubber electrical wire goes in and out of unit; silver metal tube leads up to black control box, with knob to adjust power and gauge showing number of volts; detachable black hand-held control hooks onto control box, has coiled black rubber electrical wire which plugs into unit; metal tube has rubber covering directly above control box; metal tube continues upwards, bending at a right angle, then again, so the head of the unit is pointed downward; tube has hinges at right angles to facilitate smooth movement; adjustable head is attached to tube via hinge; head has cylindrical base with white notches showing angles from 0 to 90, silver cylinder with black cone-shaped end
Number Of Parts
1
Provenance
Transfer from the Dental Canada Fund; previously housed in the Dentistry Canada Museum (Ottawa)
Maker
Philips Electronic Equipment Ltd.
Site Made (Country)
Holland
Dates
1950
1960
circa 1950-1960
Date Remarks
Based on donors remarks
Material
metal: silver
enamel: black, silver, white
rubber: black, brown
glass: clear
paper: white
plastic: white
Inscriptions
Printed on sticker on control box: "THE CITY OF CALGARY HEALTH DISTRICT // LOCAL BOARD OF HEALTH // No. H 0884"; printed on control box: "WARNING: X-RAYS EMITTED // WHEN THIS CONTROL IS // ACTIVATED. // TO BE USED BY AUTHORIZED // PERSONS ONLY"; printed on unit: "ORALIX"; "DISTRIBUTED BY // PHILIPS ELECTRONIC EQUIPMENT LTD. // TORONTO // TYPE ORALIX SER. // INPUT 110 // VOLTS 60 // CYCLES 1 PHASE // RATING L.T. V.A. MOM. 770 V.A"; "PHILIPS // MADE IN HOLLAND"; "CAUTION // This equipment has been approved by the // CSA Testing Laboratories with regards to // safety from electrical shock and fire hazard. // The Laboratories have not investigated the // physiological effects. // 4507 100 00001"; printed on unit and control box: "PHILIPS"; printed on sticker on unit: "SPECIAL // Testing Laboratories // S 77549 // ACCEPTANCE"
Permanent Location
Storage Room W2
W2-538-4-1
Dimension Notes
Length 1.59 m x Width 69.0 cm x Depth 59.5 cm
Condition Remarks
Glass cracked on control box; enamel on base slightly scratched; plastic holding cone and cylinder at head cracked
Copy Type
Original
Reference Types
Person
JPG
Reference Comments
Dr. John J. Willey
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 originally owned and used by the Oral Health Program, Calgary Health Services, and was donated by Dr. John J. Willey from Calgary, Alberta
Images
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