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dental drill unit

https://mhc.andornot.com/en/permalink/artifact13592
Dates
1955
Collection
Dr. Ralph and Mrs. Olga Crawford Canadian Dental Collection
Category
Diagnostic & Treatment Artifacts
Classification
Dental
Accession Number
010020448
Description
Stainless steel dental drill unit; rectangular cabinet with glass top on piece of fibreboard, bordered with black plastic and silver metal; silver metal pipe with metal coils holds grey rubber tube; metal drill handle at end; cabinet door opens to motor, pump and green rubber bucket on metal platfo…
Accession Number
010020448
Collection
Dr. Ralph and Mrs. Olga Crawford Canadian Dental Collection
Category
Diagnostic & Treatment Artifacts
Classification
Dental
MeSH Heading
Dental High Speed Equipment
Dentistry
Dental Restoration, Permanent
MM= Dentistry, Operative -- drill
Description
Stainless steel dental drill unit; rectangular cabinet with glass top on piece of fibreboard, bordered with black plastic and silver metal; silver metal pipe with metal coils holds grey rubber tube; metal drill handle at end; cabinet door opens to motor, pump and green rubber bucket on metal platform; water travels from bucket through pump and silver metal pipes inside cabinet into grey tubing at top of cabinet and ultimately into drill handle; control switch is on the side of cabinet; rubber wheels at bottom
Number Of Parts
1
Provenance
Transfer from the Dental Canada Fund; previously housed in the Dentistry Canada Museum (Ottawa)
Maker
Bowen & Company, Inc.
Site Made (City)
Bethesda
Site Made (State)
Maryland
Site Made (Country)
United States of America
Dates
1955
Date Remarks
Based on donor's remarks
Material
metal: silver, brown
fibreboard: brown
paint: black, blue
fabric: yellow
rubber: grey, black
plastic: black
Inscriptions
(a) Printed on unit: "KERN // TURBO-JET DENTAL UNIT // PATENT APPLIED FOR // MANUFACTURED BY // BOWEN & COMPANY, INC. // BETHESDA, MARYLAND"; printed inside unit door: "MADE FROM // ALLEGHENY LUDLUM // STAINLESS STEEL"; painted inside unit: "CAUTION // DISCONNECT MACHINE // FROM SOURCE OF SUPPLY // BEFORE REMOVING THIS // COVER"
Permanent Location
Storage Room W2
W2-536-6-1
Dimension Notes
Length 1.74 m x Width 44.0 cm x Depth 43.0 cm
Condition Remarks
Insulation inside unit is pulling off wall; mineral deposits on internal tubing
Copy Type
Original
Reference Types
Document
Reference Comments
Previous Dental Canada Fund / Crawford Inventory List #: 108-A
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 by Dr. Donald Beauprie from Deep River, Ontario
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dental drill unit

https://mhc.andornot.com/en/permalink/artifact13102
Dates
1957
Collection
Dr. Ralph and Mrs. Olga Crawford Canadian Dental Collection
Category
Diagnostic & Treatment Artifacts
Classification
Dental
Accession Number
010020013 a-b
Description
Metal dental drill unit (a), enamelled in beige; rectangular cabinet with glass top on piece of fibreboard, bordered with black plastic and silver metal; silver metal pipe with metal coils holds grey rubber tube; metal drill handle at end; cabinet door opens to motor, pump and grey rubber bucket on…
  2 images  
Accession Number
010020013 a-b
Collection
Dr. Ralph and Mrs. Olga Crawford Canadian Dental Collection
Category
Diagnostic & Treatment Artifacts
Classification
Dental
MeSH Heading
Dental High Speed Equipment
Dentistry
Dental Restoration, Permanent
MM= Dentistry, Operative -- drill
Description
Metal dental drill unit (a), enamelled in beige; rectangular cabinet with glass top on piece of fibreboard, bordered with black plastic and silver metal; silver metal pipe with metal coils holds grey rubber tube; metal drill handle at end; cabinet door opens to motor, pump and grey rubber bucket on metal platform, which can be lowered then locked into place via brass handle; water travels from bucket through pump and silver metal pipes inside cabinet, into grey tubing at top of cabinet and ultimately into drill handle; control switch on side of cabinet; metal wheels at bottom; manufacturer's brochure (b) printed with orange and black ink on rectangular white paper, folded in four sections; demonstrates why dentists should choose a Turbo-Jet hydraulic handpiece, lists the high speed diamond instruments available and their prices
Number Of Parts
2
Part Names
a - unit - Size: Length 1.60 m x Width 44.3 cm x Depth 43.1 cm
b - brochure - Size: Length 15.7 cm x Width 8.4 cm x Depth 0.1 cm
Provenance
Transfer from the Dental Canada Fund; previously housed in the Dentistry Canada Museum (Ottawa)
Maker
Bowen & Company, Inc.
Site Made (City)
Bethesda
Site Made (State)
Maryland
Site Made (Country)
United States of America
Dates
1957
Date Remarks
Based on donors remarks
Material
metal: silver, brown
enamel: beige
fibreboard: brown
paint: black
fabric: yellow
rubber: grey
plastic: black
paper: white
ink: orange, black
Inscriptions
(a) Printed on unit: "KERN // TURBO-JET DENTAL UNIT // PATENT APPLIED FOR // MANUFACTURED BY // BOWEN & COMPANY, INC. // BETHESDA, MARYLAND"; printed inside unit door: "TURBO-JET // DENTAL UNIT // PATENT APPLIED FOR // MODEL No. 153 // VOLTS 115 // CYCLES 60 // AMP. 7.0 // MANUFACTURED BY // BOWEN & COMPANY, INC. // BETHESDA, MARYLAND"; painted inside unit: "CAUTION // DISCONNECT MACHINE // FROM SOURCE OF SUPPLY // BEFORE REMOVING THIS // COVER"; (b) printed on cover: "TURBO- // JET // Patent Applied For // HYDRAULIC // TURBINE // HANDPIECE // Manufactured by // BOWEN & // COMPANY, INC. // P.O. BOX 5818 // BETHESDA 14, MD."; stamped on cover: "PATERSON & PATERSON INC."
Permanent Location
(a) Storage Room W2
W2-536-1-1
(b) Storage Room 2005
2005-2-5 Box 20
Condition Remarks
Rubber sticky but malleable; plastic and metal border around top of cabinet loose at back; electric wire frayed; parts of dental drill handle corroded
Copy Type
Original
Reference Types
Book
Person
JPG
Reference Comments
“The development of the dental high-speed air turbine handpiece”, J.E. Dyson and B.W. Darvell, 1993, p. 58; Dr. George Allison
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 by Dr. George Allison from Hanover, Ontario, who purchased it in 1957; the unit is a simple pump and turbine and used water to operate; it operates via a foot control but has only one speed - 50 000 rpm; G.R. Kern was a mechanic from Arlington, VA who filed the original patent, but by 1956 Bowen was manufacturing the units under the 'Kern Turbo-Jet' name; these units were made obsolete after the introduction of air turbine-powered drills, specifically the Airotor unit
Images
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