Dr. Ralph and Mrs. Olga Crawford Canadian Dental Collection
Category
Dental
Classification
Dental
Accession Number
010020409 a-d
Description
Dental casting machine (a); brown wooden rectangular base; cylindrical yellow metal pump to one side; brown wooden cylindrical handle at top; larger cylindrical yellow metal tank with raised border around middle and gauge at top, printed with black enamel and covered with clear glass; gauge shows n…
Dental casting machine (a); brown wooden rectangular base; cylindrical yellow metal pump to one side; brown wooden cylindrical handle at top; larger cylindrical yellow metal tank with raised border around middle and gauge at top, printed with black enamel and covered with clear glass; gauge shows numbers 0-30; red rubber tube comes from tank, would attach to press; metal valve coming from bottom of tank; black rubber tube goes between tank and pump; black-enamelled silver metal press in middle of base; lever with brown wooden bulbous handle at front; pulling lever down causes silver metal cylinder to move down toward base; metal disc (b) with five perforated holes in middle fits into base underneath lever; smaller disc (d) screws onto bottom of silver metal cylinder; cylindrical dish (c) with matching perforated holes sits on larger disc; white fabric tube, covered with red rubber, goes from bottom of cylinder up to top of press
Number Of Parts
4
Part Names
a - machine - Size: Length 55.0 cm x Width 54.6 cm x Depth 22.3 cm
b - disc - Size: Depth 3.0 cm x Diam. 10.5 cm
c - dish - Size: Depth 3.5 cm x Diam. 6.8 cm
d - disc - Size: Depth 2.3 cm x Diam. 6.5 cm
Provenance
Transfer from the Dental Canada Fund; previously housed in the Dentistry Canada Museum (Ottawa)
(a) Embossed on side of machine: "BURNS DENTAL CASTING MACH. // PAT JULY 16-18"; printed in gauge: "BURNS // DENTAL CASTING MACHINE. // NATIONAL GAUGE AND EOPT. CO. // LA CROSSE, WIS. // 1251-G"; engraved at top: "BURNS DENTAL CASTING MACHINE // PATENTED JULY 16,1918. JULY 10,1917. JULY 16,1918. // OTHER PATENTS PENDING // MANUFACTURED BY // BURNS DENTAL CASTING MACHINE CO. // FLUSHING, L.I., N.Y."
Permanent Location
Storage Room 0007
0007-T1-3
Condition Remarks
Wood base is very worn; black enamel peeling heavily from press; masking tape holds fabric tube onto bottom of press; tube is ripped, does not attach to top of press; red rubber tube from tank does not attach to press; all rubber is brittle; some tarnishing on metal
Copy Type
Original
Reference Types
Internet
JPG
Reference Comments
"Free Patents Online" website; "Edward M. Feinberg, D.M.D." 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. Ralph Crawford from Winnipeg, Manitoba; the company patented another casting maching design in 1927, so this machine most likely dates before that year; William Taggert designed the first casting machine in 1907; it had a very similar design to this item
Exhibit History
On exhibit, "Teeth in Time," Case #2, 29 March 2011 - November 2014