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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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dental functional retruder

https://mhc.andornot.com/en/permalink/artifact13411
Dates
1940
1965
circa 1940-1965
Collection
Dr. Ralph and Mrs. Olga Crawford Canadian Dental Collection
Category
Diagnostic & Treatment Artifacts
Classification
Dental
Accession Number
010020289 a-d
Description
Dental functional retruder; rectangular black paper box (a) with lid that opens at front; yellow paper lining inside, with white paper instructions printed with black ink, complete with photographs of the instrument in use, affixed inside lid; fabric tie on left to keep lid from falling backwards; …
  5 images  
Accession Number
010020289 a-d
Collection
Dr. Ralph and Mrs. Olga Crawford Canadian Dental Collection
Category
Diagnostic & Treatment Artifacts
Classification
Dental
MeSH Heading
Dental Prosthesis
Dental Restoration, Permanent
Dental Equipment
Description
Dental functional retruder; rectangular black paper box (a) with lid that opens at front; yellow paper lining inside, with white paper instructions printed with black ink, complete with photographs of the instrument in use, affixed inside lid; fabric tie on left to keep lid from falling backwards; retruder consists of black rubber chin strap (b), round in middle with tapering sides; five holes on each side; arrow embossed in middle; semi-circular silver metal chin rest (c) curved in middle with tapering sides; knob on each side goes into holes in chin strap to adjust size; silver metal measuring tool (d); two branches, ending in sharp points, held together at top via hinge; branches can be pulled apart or pushed together
Number Of Parts
4
Part Names
a - box - Size: Length 19.8 cm x Width 14.0 cm x Depth 4.4 cm
b - chin strap - Size: Length 49.0 cm x Width 8.7 cm x Depth 0.3 cm
c - chin rest - Size: Length 17.5 cm x Width 9.3 cm x Depth 3.1 cm
d - measuring tool - Size: Length 13.1 cm x Width 2.6 cm x Depth 0.5 cm
Provenance
Transfer from the Dental Canada Fund; previously housed in the Dentistry Canada Museum (Ottawa)
Maker
Hickok Specialties Co.
Site Made (City)
Grand Rapids
Site Made (State)
Michigan
Site Made (Country)
United States of America
Dates
1940
1965
circa 1940-1965
Date Remarks
Based on zip code
Material
metal: silver
rubber: black
paper: white, yellow
ink: black
fabric: black
Inscriptions
(a) Printed inside box lid: "HICKOK FUNCTIONAL RETRUDER // HICKOK SPECIALTIES CO., Gilbert Building, Grand Rapids 2, Mich."; (d) engraved on hinge: "DIXON U.S.A. 448"
Permanent Location
Storage Room 0010
0010-B
Condition Remarks
Paper inside box (a) is darkened in spots, fabric tie coming loose; box is worn at outside edges; rubber chin strap (b) remains malleable.
Copy Type
Original
Reference Types
JPG
Reference Comments
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. William H. Mills from Toronto, Ontario; as per the instructions on the box, this item is an instrument used to obtain normal centric jaw relation; the dentist could then register the centric bite of the patient
Images
Less detail