Dr. Ralph and Mrs. Olga Crawford Canadian Dental Collection
Category
Dental
Classification
Dental
Accession Number
010020017
Description
Mobile metal dental x-ray unit, sitting on rectangular wooden base; black rubber electrical wire goes in and out of unit; black metal tube leads upward, attaches to black metal tube curved down; adjustable head is attached to tube via hinge; plaques showing angle degrees on sides of hinges; black c…
Mobile metal dental x-ray unit, sitting on rectangular wooden base; black rubber electrical wire goes in and out of unit; black metal tube leads upward, attaches to black metal tube curved down; adjustable head is attached to tube via hinge; plaques showing angle degrees on sides of hinges; black cylinder leads to clear glass sphere next to light and brown cone-shaped end; curved black piece of metal surrounds cylinder; second black tube rises from unit, holds rubber wires and small metal coils that attach to main arm; two gauges covered in glass, composed of white paper printed with black ink, on top of unit, one showing volts and the other milliamperes; black hand-held control hooks onto front of unit, attached via brown rubber electrical wire; round black knob to control volts and switch to raise milliammeters on front of unit; four black rubber wheels on bottom
Number Of Parts
1
Provenance
Transfer from the Dental Canada Fund; previously housed in the Dentistry Canada Museum (Ottawa)
Printed inside gauges on top: "MILLIAMPERES D.C. // WEBER // WESTONS ELECTRICAL INSTRUMENT CORP. NEWARK, N.J., U.S.A. // MODEL 301 NO. 8413[ILLEG.]", "VOLTS A.C. // WEBER // WESTONS ELECTRICAL INSTRUMENT CORP. NEWARK, N.J., U.S.A. // MODEL 476 NO 141729"; printed on side of unit: "MILLIAMMETERS // RAISE --;", "IF HANDLE IS HERE MOVE HANDLE //
Permanent Location
Storage Room W2
W2-538-4-1
Dimension Notes
Length 2.11 m x Width 52.0 cm x Depth 48.0 cm
Condition Remarks
Wooden unit scratched, varnish worn in places; thick black cord going from unit to arm very deteriorated; most rubber electrical cords hardened and cracking
Copy Type
Original
Reference Types
Person
JPG
Reference Comments
Dr. P. Ralph Crawford
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. Irwin G. Kreisman from Ottawa, Ontario