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Publication numberUS1190523 A
Publication typeGrant
Publication dateJul 11, 1916
Filing dateNov 3, 1913
Priority dateNov 3, 1913
Publication numberUS 1190523 A, US 1190523A, US-A-1190523, US1190523 A, US1190523A
InventorsMalcolm Blakely Dodd
Original AssigneeMalcolm Blakely Dodd
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Reclining or invalid's chair.
US 1190523 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)




Patented July 11, 1916.

: lids Chairs, do hereby declare that the-folv lowing is a full, clear, and exact description To all whom it may cancer-1t chair back.


Be it known that l, MALCOLM BLAKELY Donn, of the town of Arnprior, in the county t of Renfrew, in the Province of Ontario, Dominion of Canada, having invented new and,

useful Improvements inlReclining or. Invaofsame.-

This invention relates to chairs and the objects of the invention are to permit of the back being readily adjusted as found desir able, and other objects, which will be made clear hereafter and it consists essentially of the improved construction of chair particularly described and set forth in the following specification and accompanying draw ings forming part of the same,

In thedrawings: Figure 1 is a central longitudinal vertical section of the improved chair. Fig. 2 is a detail of'the curvilinear rack adapted to control the movement of the Like characters of r'eference refer to like parts in the several drawings.

Referring to'the. drawings, A represents the, improved chair comprising the stand, the seat, the back, and the leg rest. The stand consists oftwo side supports comprising the vertical member 2, the inclined'memher 3 and the transversely extending mere-- here 4 and the arm rests 1, such supports being suitably connected by the transversely extending rods The back of the chair is made up'of the side members A suitably joined together by means of the transversely extending members A which are preferably mortised into the said side members, the lowest of the said transversely extending members A extending slightly beyond the outer edges of the side members and terminating in turned ends adapted to rotatably engage with the I angular upwardly disposed slot Y. A plurality of longitudinally extending strips of resil ent material A are mounted on the transversely extending members A the lower portion of the chair back being pro- .vided with a rod A extending transversely thereacross the object of which will be made clear hereafter.

'llhe seatof the chair comprises the side I members B which are suitably connected by RECLINING 0R INVALIDS CHAIR,

dinally extending resilient strips B are mounted, the end of the side members B'of the seat adjacent to the back being provided with an upwardly extending slot G in the upper-edge thereof adapted to engage the turned ends of the lowermost of the transverselyextending members A", the said side Specification of Letters Patent. 7 Pa'ibgntrgdl J 11y 1L1, 11 L916, Application filed November s, 1913; serial No. 798,974. I

on the chair back. The ends of the members B of the seat remote from the chair back are designed to be pivotally mounted to the side members C of the legrest intermediate of the ends of the latter by' the transversely extending rod C the said leg -One of the racks 12 is adapted to work in conjunction with a second curvilinearrack 24 which is provided with slots 41 extending therethrough adapted to slidably engage with the pins mounted on the fixed curvilinear rack 12 this curvilinear rack 24 being adapted to be actuated by the bell crank lever 14 which is, pivotally mounted on the bracket M fixed to the member 3 of the chair stand, one of the arms of the said bell crank being provided with a pin 14* adapted to slidably engage in the horizontally disposed slot 14? in the slidably mounted curvilinear rest comprising side members C suitably 7 connected by means of the transversely extending rods 0 and G and having a plurack 24, the other arm of the Said bell crank being pivotally connected to one end of the link 15 mounted adjacent to the arm rests 1, such link terminating in a suitable lever handle 16. Links P are pivotally mounted on the side members A of the back and are means of the transversely extending rod P the ends of which are adapted to engage with the serrations or teeth of the curvilinear racks 12, which are protected bythe curved guards 13 mounted on the members 3 and 4.

In the operation of the device the occupant of the chair when desirous of adjusting'the back pushes the lever 16 forwardly thereby actuating the link 15 and the bell crank 14 which in turn elevates the curvilinear rack 24 so lifting the ends of the transversely extending rod P clear of the serrations in the curvilinear racks 12' mounted on each side of the chair stand.

It will be clearly understood that since the serrations in the curvilinear rack 24: are made shallow as shown in Fig. 2 the rod P will -c1ear the several serrations in the racks 12 allowing the back A to rotate about the lowest transversely extending rod A until the desired angle or inclination of the back has been attained when the lever 16 is released whereupon the curvilinear rack 24 will drop back to place by gravity permitting the transversely extending rod P to engage with the'serrati-ons in the fixed curvilinear racks 12.'

From this description it will be seen that I have invented a chair which is capable of being adj usted'into any desired position and that even when the operator is occupying the said chair.

As many changes could be made in the above construction, and many apparently widely different embodiments of my invention, within the scope of the claims, constructed without departing from the spirit or scope thereof, it is intended that all matter contained in the accompanying specification and drawings shall be interpreted as illustrative and not in a limiting sense.

in combination,

the first said curvilinear rack,

WVhat I claim as my invention is:

1. Ina chair of the class described and in combination, a stand, a back pivotally mounted on the said stand, a curvilinear rack mounted on the back of the stand, a second curvilinear rack designed to coact with the first said curvilinear rack, links pivotally mounted on the back, a transversely extending rod carried by the links designed to engage with the first said curvilinear rack, and means for operating the second curvilinear rack, as-and for the purpose specified.

2. Ina chair of the class described and a stand, a back pivotally mounted in the said stand, a curvilinear rack rigidly mounted on the back of the stand, pins engaging with the curvilinear rack, a second curvilinear rack provided with slots adapted to engage the pins on a bell crank pivotally mounted to the stand having one of its arms coacting with the second curs vilinear rack, a manually operated link connected to the second arm of the bell crank, links pivotally mountedon the back, and a transversely extending rod carried by the links designed. to engage with the first said curvilinear rack, substantially as described.

Arnprior September 19th 1913.


Signed in presence of- H. Donn, RICHARD LANEY.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2563629 *Apr 19, 1946Aug 7, 1951Heywood Wakefield CoVertically swinging adjustable leg and foot rest
US2694437 *Jun 30, 1952Nov 16, 1954William P GlaserCombination wheel chair and stretcher
US3191594 *Jan 10, 1963Jun 29, 1965Kenneth H BagnellTherapeutic chair
US7328953Sep 12, 2003Feb 12, 2008Columbia Medical Manufacturing, LlcCustomized articulating anatomical support
US7506385Oct 18, 2005Mar 24, 2009Columbia Medical Manufacturing, LlcSubmersing bathing and transfer chair
US20050057083 *Sep 12, 2003Mar 17, 2005Gary WerschmidtCustomized articulating anatomical support
US20070083990 *Oct 18, 2005Apr 19, 2007Werschmidt Gary SSubmersing bathing and transfer chair
U.S. Classification297/372, 297/320, 297/423.35
Cooperative ClassificationA47C1/026