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Publication numberUS137091 A
Publication typeGrant
Publication dateMar 25, 1873
Publication numberUS 137091 A, US 137091A, US-A-137091, US137091 A, US137091A
InventorsFeedeeick A. Paekeb
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Improvement in tilting-chairs
US 137091 A
Abstract  available in
Images(1)
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Claims  available in
Description  (OCR text may contain errors)

F. A. PARKER;

Tilting Chairs. No. 137,091. l Pafentdmarchzms AM mom-uma sum1/c co. 1v. Museos/VES macgsg) UNITED STATEs PATENT OFFICE.

FREDERICK A. PARKER, 0F GARDNER, MASSACHUSETTS.

IMPROVEMENT IN TlLTlNGv-CHAIRS.

Specification forming part of Letters Patent No. 137,091 dated Mardi S5, 1&73.

To all whom it may concern Be it known that I, FREDERICK A. PARK- ER, of Gardner, in the county of Worcester and Commonwealth of Massachusetts, have y invented certain new and useful Improvements in Tilting-Chairs; and I do hereby declare the following to be a full, clear, and eX- act description of the same, reference being had to the accompanying drawing "which forms a vpart of this specification, and in Which- Figure l, represents a side view of a chair having my invention applied thereto, the seat being shown in a horizontal or level position. Fig. 2 represents a side view ofthe chair, the seat being shown tilted up in front; and Fig. 3 represents a vertical central section of the chair, as shown in Fig. l.

To enable those skilled in the art t0 which my invention belongs to make and use the same, i will proceed to describe it in detail.

In the drawing, the part marked A is the seat of the chair, to which are fastened two curved or convex supports or runners, B B, which it and rest upon corresponding curved or concave parts C G, fastened to the legs D of the chair. The parts B B and C C are connected by rounds et a and b b, respectively. To the inner sides of the parts C C are fastened metal guide-pieces c, having curved slots d, Which correspond With the curve of the parts B C, and screws e are passed through these slots into the parts B B, whereby the seat and its supporting-frame are retained in Y their proper relative positions when the chair is in use. In lieu of the plates and screws the parts B C may be tted to work together by means of projections and grooves, or an ges may be made on one or both of the parts to lap by the other, thereby retaining the parts in proper position.

It will be seen that the chair-back, when the front is tilted up, is moved forward, consequently is not liable to strike aga-inst the side of the Wall or partition of the house or ofce in which it may be used. The parts are not liable to break or get out of order, While the chair is both strong and can be made quite cheaply. 4

The friction between the parts B and C is sufficient to retain the parts in any adjusted position; but, if preferred, a holdingcatch could be combined With the chair for such a purpose.

Those who have experienced the objections to the many diiferent styles of tilting chairs heretofore in use, both as regards the complication of parts, expense, and liability of the back striking against the walls, when used near them, will readily appreciate the advanrages of my invention.

Having described my improvements in tiltingfchairs, what I claim therein as new and of my invention, and desire to secure by Letters Patent, is-

A tilting-chair consisting of a seat-portion provided with convex curved parts B B, in combination with a supporting-frame or base provided with concave parts C G, curved to correspond with the parts B B, said parts fitting and operating together substantially as shown and set forth.

FREDERICK A. PARKER.

Witnesses:

FnANois RICHARDSON, ELIzA A. RICHARDSON.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2572072 *Mar 23, 1945Oct 23, 1951Stoner Seth HVertically adjustable seat for aircraft
US2785733 *Oct 15, 1954Mar 19, 1957Troy Sunshade CompanyChair
US2920685 *May 29, 1957Jan 12, 1960Trebilcock Anna EInfant's swivel chair
US3232575 *May 27, 1963Feb 1, 1966 Powered mechanism for positionable ohairs
US4372609 *Nov 6, 1980Feb 8, 1983Societe Industrielle Bertrand FaureVehicle seats comprising a shell-shaped frame
US4386805 *Mar 24, 1981Jun 7, 1983Societe Industrielle Bertrand FaureSeats with an adjustable-tilt back-rest
US5577802 *Mar 20, 1995Nov 26, 1996Cke Technologies, Inc.Adjustable chair
US6126186 *Nov 9, 1998Oct 3, 2000Invacare CorporationConstant center of gravity tilt seat of a wheelchair
US6206393 *Sep 29, 1999Mar 27, 2001Invacare CorporationConstant center of gravity tilt seat of a wheelchair
Classifications
Cooperative ClassificationB60N2/045