Chair
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1980.0055.001
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- OBJECT TYPE
- DENTAL/W. CHILD'S SEAT/HYDRAULIC
- DATE
- 1905–1925
- ARTIFACT NUMBER
- 1980.0055.001
- MANUFACTURER
- RITTER DENTAL MFG. CO.
- MODEL
- IMPERIAL COLUMBIA
- LOCATION
- Rochester, New York, United States of America
More Information
General Information
- Serial #
- 6281C
- Part Number
- 1
- Total Parts
- 1
- AKA
- N/A
- Patents
- N/A
- General Description
- Metal base & frame with wooden armrests and leather-covered seat, backrest & headrest. plush red fabric covering on chair back frame (which serves as child's seat backrest.) painted leather (?) panels inserted in footrest.
Dimensions
Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.
- Length
- 125.0 cm
- Width
- 60.0 cm
- Height
- 100.0 cm
- Thickness
- N/A
- Weight
- N/A
- Diameter
- N/A
- Volume
- N/A
Lexicon
- Group
- Medical Technology
- Category
- Dentistry
- Sub-Category
- N/A
Manufacturer
- AKA
- RITTER
- Country
- United States of America
- State/Province
- New York
- City
- Rochester
Context
- Country
- United States of America
- State/Province
- Vermont
- Period
- This type of chair used in early 20th century.
- Canada
-
Example of dental chair, likely used by Canadian dentists in the early 20th century. - Function
-
Used to support head & neck of patient undergoing dental treatment, in a position most advantageous to the dentist. - Technical
-
Ritter began manufacturing "Columbia" line of chairs in 1891. These chairs were first to use hydraulic pressure for both raising & lowering mechanisms, and had telescoping tubes for easier up & down movement. (ref. 1, p.40.) This chair could be used for pediatric patients: the padded leather backrest folds down to become child's seat. - Area Notes
-
Unknown
Details
- Markings
- " [illegible] BY/ THE RITTER DENTAL MFG. COMPANY,/ ROCHESTER, N.Y./ U.S.A " & " IMPERIAL COLUMBIA CHAIR NO. 6281C/ PATENTS UNITED STATES/ Feb. 2, 1897, Apr. 11, 1899, June 4, 1901. Reissued/ Sept. 17, 1901 June 7, 1904, other pending./ Canada, Dec. 14, 1897. England. Sept. 3, 1897, May 5, 1904,/ Apr. 8, 1905. Germany, D.R.P. nos. 121213, 161983, 165923./ D.R.G.M. Nos. 231248, 231249, 237863, 275931. " printed on base of chair, under removeable seat. " TRADE/ [logo]/ MARK " printed on lower back of chair frame. " SPEED REGULATOR " adjustment labelled. "Imperial Columbia" on front. Paper label fixed to underside of removable seat pad reads: " TO POUR OIL IN CHAIR./ Remove small screw near centre of top under upholstered seat and pour contents of oil can into this hole, press down/ the lowering lever and work the pumping lever to force the air out of the pump before attempting to raise the chair. This chair/ should never have more than 3 quarts of oil./ TO REMOVE OIL FROM BASE./ Pump the chair to the highest position, open the rotating lever as far as possible, lift the chair [illegible] cylinder out of/ the base; rest the cylinder on the top edge of the base and lower the chair so that the oil in the [illegible] to the tank;/ when all the oil is out of the pump remove the oil from tank, replace cylinder and close locking lev[er] [illegible] will be ready/ to pack. Never work the main lever when there is no oil in the chair./ NOTICE./ The speed of lowering the chair may be regulated by turning the screw in the cylinder ( next to where the lowering lever/ enters) to the right for slower and to the left for faster./ If the rotating lever does not lock to suit the operator, remove the screw that holds the lever on the [l]ocking stud, take off/ the lever and replace one quarter turn to the right to loosen or one quarter turn to the left to tighten./ In case of any trouble with the lifting mechanism, it can be examined by taking the cylinder out of the base and laying the/ chair body on its side by the same directions as for removing oil from the base./ To take out the lifting mechanism, remove the top from the base when the chair is in the lowest position, open the rotary lever, lift/ the cylinder out of the tank and rest on the edge to allow the oil to drain, then remove the lid in front of main lever and remove/ the main lever spring, then take out small screw which connects part of the pump to the outer guiding tube from the bottom and/ take out the entire pump by removing the four bolts./ In case of wear, the guide tubes must be adjusted by tightening the nickel-plated ring in top of cylinder to adjust outer guide/ tube, and the nickel-plated ring in top of outer guide tube adjust the inner tube by use of the spanner./ In case of accident, and parts being broken, write us, describing part and number of same, also the number of the chair/ which will be found on the iron part under the upholstered seat./ THE RITTER DENTAL MFG. CO.,/ 563-565 St. Paul St.,/ Rochester, N.Y., U.S.A./ CHAIR No. 6281 C ".
- Missing
- N/A
- Finish
- Base & frame- black 'enamel' type finish/ footrest, headrest framework & pedals- nickel plated/ oak (?) wood armrests/ padded black leather seat, backrest & headrest/ plush red fabric covering on child seat's backrest/ leather panels in footrest painted light grey, with inset black piping.
- Decoration
- On base & framework- gold piping & elaborate scroll work (scroll & shell patterns- possibly hand painted)
CITE THIS OBJECT
If you choose to share our information about this collection object, please cite:
RITTER DENTAL MFG. CO., Chair, circa 1905–1925, Artifact no. 1980.0055, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1980.0055.001/
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