US916080A - Chair with adjustable seat. - Google Patents

Description

J. A. WILKINSON. CHAIR WITH ADJUSTABLE' SEAT. APPLIOATION FILED H1B. 4, 1905.

l* v Paehted Mar. 23,- 1909.

WITNESS-s;

UNITED sTATEs P ETENT OEEIOE.

JOHN ALLAN WILKINSON, OF NEW YORK, N. Y., `ASSIGrNOR OF lHREE-FOURTHS TO JOHN PENNIE AND ONE-FOURTH TO ALBERT WANNER, JR., AND EDWIN P. WANNER, OF NEW "YORK, N. Y.

.CHAIR WITH ADJUSTABLE SEAT.

Specification of Letters Patent Patented March 2.3, 1909.

Application filed February 4, 1905. Serial No. 244,157.

To all whom it may concern:

Be it known that I, JOHN A. WILKINSON, a citizen of the Dominion of Canada, residing in the city of New York, State and county of New York, have invented -certain new and useful Improvements in Chairs with Adjustable Seats; and I do hereby declare the Yfollowing to be a full, clear, and exactA descri Ytion of the invention, such asfwill enab e others skilled in the art to which it apperu tains to make and use the same.

This invention relates to certain new and useful improvements in chairs provided with an adjustable seat.

My improved hair can either be firmly se-A cured to the lloor or carried by a portable supportingstand, and has, as its'main characteristic feature that the seat carrier and the support holding the latter are composed of two tubes vertically adjustable one within the other, the seat carrier tube being so are ranged as to freely revolve within the tubularsupport andits adjustment being eli'ected by the like adjustment of a bearing block arranged within the tubular support and upon which the seat carrier rests, o'r by the l adjustment of the tubular su )port within the portable stand, when the atter is em'- ployed.

rThe accompanying drawing represents a side elevation arti 1n sectlon 'of a chanconstructed in accordance with the present invention and shown as fastened to the floor.

The chair is provided with a tubular supporti?) which 1s inserted within a socketshaped foot or stand a secured to the loor. A second tube d which forms the scat carrier is inserted within the tube b and can bc and consequently the adjustment of the seat toa higher or lower level is effected by dislar support b and the latter is removed,

whereupon theblock c (which can be displaced within the tube b) is. pushed upward within the latter until one ofthe lower holes of the block is opposite..the aperture in the tube b. The tube b is thereu on reinserted within the stand a and thepi'illing secured in its position by screwing in the screw g, whereby the tube b will also be preventedfrom rotating. The seat carrier may now be'inserted again, and the seat will be raised to the desired height.

y Instead of inserting the tubular sup ort b y' in a foot rigidlyysecured to the floor, t e arrangement may be such that the tubular support b is inserted in a portable foot or stand so Aas .to fit it tightly and to be vertically adjustable withinv the same.

rier or the woo en filling of the seat carrier, which is inserted in the supporting tube and upon which the seat carrier freely revolves, is in the modified arrangement rigidi fastened within the tubular support and t e ad' block is The wooden filling u on which rests the seat car- Y justrncnt of the scat in the direction of its' height is elected by displacing and then 95 clamping the tubular support i1ra cla1np1ng socket or a clamping ring provided with a y' screw and which can, if desired, be fastened to the portable stand. 4

In both forms of construction, the hollow `100 tube of the seat carrier may be replaced by a ad'usted vertically within the same. 'lhe tu ular su port l) contains a wooden bearing g block or I'iilmg c which can be adjusted in a vertical direction, and the seat carrier al is i l referably provided throughout its entire ength with a flllingf of wood. 'lt [its the 45 tube b exactly, enters into the same for a suitable distance and rests upon the bearing block c. so that the seat can freely rotate solid rod. within the support b. 'l`o facilitate the rol v l'lavingthus described my mvention,.what .tation of the seat, the bearing block c is pro- .l claim 1s: y

vided on its upper surface with a pro'ection, l. A chan', provided with a seat, a rotata- 105 .(for instance, a nail with a spherica head)l ble vertically adjustable seat carrier, anda so that the seat carrier d or rather its wooden tubular support for seat carrier, said Iilling f rests upon the smallest possible fric- I tubular su )port contamlng a bearing lblock tional surface. upon w-hic 1 the seat carrier can turn treely,

55 The vertical adjustment of the seat carrier 1 said bearmg block being adjustable to dit- '1 10 feront heights within the tubular support; upon which the seat carrier can tu substantially as described, seid bearing block being adjustab 2. A chair, provided with a seat, a rotatable vertically 'adjustable seat carrier consist- I means of a screw ing of a tube having a Wood filling, and a tupassing through bular sup ort containing a bearing block adi into the block; substantially as des justable t erein and provided with a rounded In testimony whereof I allix projection or stud upon which the Wood in presence of two witnesses.

hlling rests; substantially as described.

3. A chair, provided with a seat, a rotatal ble vertically adjustable seat carrier, and a tubular support for said seat carrier, said tubular support containing a bearing block Vitnesses JOHN C. PENNIE, XV. BEALLE WILLIAMS.

rn freely,

le to ldif- 17,' I ferent heights Within the tubular support by an apere ture in the wall of the tubular support and cribed.

niy signature, 20

JOHN ALLAN WILKiNsoN.v

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