Dr. Ralph and Mrs. Olga Crawford Canadian Dental Collection
Category
Dental
Classification
Dental
Accession Number
010020018
Description
Mobile beige-enamelled metal dental x-ray unit stand; black-enamelled top; two gauges in black-enamelled case, one for volts, one for milliamps, with clear glass coverings and printed with black ink on white paper; round black knob controls voltage on top of unit; black hand-held control shows corr…
Mobile beige-enamelled metal dental x-ray unit stand; black-enamelled top; two gauges in black-enamelled case, one for volts, one for milliamps, with clear glass coverings and printed with black ink on white paper; round black knob controls voltage on top of unit; black hand-held control shows correct angle of x-ray and amount of time recommended per tooth, hooks onto side of unit; on and off switches on top and side of stand
Number Of Parts
1
Provenance
Transfer from the Dental Canada Fund; previously housed in the Dentistry Canada Museum (Ottawa)
Printed on top of unit: "X-RAY DENTAL UNIT // MODEL "B" // VOLTS 110 // WATTS 600 // SERIAL NO. 882443 // MANUFACTURED BY // Ritter Dental Mfg. Co. Inc. // ROCHESTER, NEW YORK // MADE IN U.S.A."; printed in black ink on gauges on top of unit: "VOLTMETER // Ritter // WESTON // MODEL 476 NO. 150878", "MILLIAMMETER // NEVER USE MORE THAN 10 MILLIAMPS // Ritter // WESTON // MODEL 301 NO. 1162630"; printed on handle: "SERIAL NO. // 10B2329 // DESIGN PATENT AUG 9, 1921 JULY 28, 1925 // OTHER PATENTS PENDING"
Permanent Location
Storage Room W2
W2-536-1-1
Dimension Notes
Size: Length 1.59 m x Width 36.0 cm x Depth 25.5 cm
Condition Remarks
Rubber electrical cord hardened, cracked and broken; enamel heavily chipped at bottom of stand; half of plaque showing seconds on hand-held control is broken off
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. Terry Kearns from Sault Ste Marie, Ontario