US2633896A

US2633896A - Leg support for invalids' folding chairs

Info

Publication number: US2633896A
Application number: US181370A
Authority: US
Inventors: Thompson Herman Martin
Original assignee: Individual
Current assignee: Individual
Priority date: 1950-08-25
Filing date: 1950-08-25
Publication date: 1953-04-07
Anticipated expiration: 1970-04-07

Description

April 1953 H. M. THOMPSON 2,633,896

LEG SUPPORT FOR INVALIDS FOLDING CHAIRS Filed Aug. 25, 1950 2 SHEETS-SHEET 1 FIG.- 6-. e/mm/ 710/ m April 1953 H. M. THOMPSON 2,633,896

LEG SUPPORT FOR INVALIDS' FOLDING CHAIRS Filed Aug. 25, 1950 2 SHEETS-SHEET 2 Patented Apr. 7, 1 953 SQPATENT OFFICE LEGVSUPPORQT "Foe INVALIDS FOLDING 01mins V j Herman MartinThompson, Lemay, Mo. Application August 25, 1950, Serial No. 181,370

The invention relates to invalids chairs, particularly of the wheeled type adapted to be folded readily for transportation in an automobile or otherwise and the invention consists in a leg support to extend outwardly from the seat when in use and to be folded with the 1 chair when the chair is'folded.

When a person using a wheeled chair has his leg in a cast or otherwise immobile, it is a common practice to insert one end of a crutch,

or a similarly rigid board, under the patients buttocks so that the crutch or board sticks straight out from the seat to afford a support for the leg. Obviously this is uncomfortable for the patient, particularly after extended use, and does not afford any adjustment as to the angle between the leg and the body. Ifthe patient is notambulatory, and hence does not have other use of the crutch, it means that he must take the'crutch with him and handle it, in addition to the chair, when transporting the chair.

The main object of the present invention is "to provide a leg support on an invalids chair which may be adjusted to different angles with the chair seat and which may be folded with the chair when the chair is folded.

Another object is to embody the chair support in a complete unit which may be readily applied to existing chairs without changing the structure or machining the chairs;

Another object is to render theleg support readily shiftable from the right hand side of the chair to the left hand side of the chair.

These and other objects as will appear from the following description are attained by the structure illustrated in the accompanying drawings, in which:

Figure 1 is a side 'view of a wheeled chair now in general use equipped with the leg support referred to above.

Figure 2 is atop view of the structure shown '-in Figure 1 with the leg support shown in full lines at the right hand side of I the chair and shown in broken lines at the left hand side or otherwise secured to tube I9. A cross piece -of the chair. I Figure 3 is a front view of the structures shown inFigures 1 and 2.

Figure 4 is a side view of the structure with the chair and leg support folded for transporting the chair.

Figure 5 is a front view of the folded chair 'andleg support as shown in Figure 4.

- Figures 6, '7, and 8 are detail views as will beexplained below. i The chair comprises-two side framesp'each a 11 Claims. (CL 30) including arear upright I, a front upright2, a

bottom horizontal 3, an arm 4, and a support 5 for the footrest or treadle 6. Each side frame mounts a wheel 1. Seat bars 8 extend between uprights I and 2 and are slidable vertically thereon. Horizontals 3 and seat bars 8 are connected by a pair of cross bars 9, pivoted to each other at I0, and hold the side frames parallel by accommodating their movement to and from each other. The seat II and back I2 arejof flexible material. Pilot wheels or casters I3 are mounted on the lower ends of uprights 2. All of the above described structureis well-known in the art and forms a part of the presentinvention only in combination with the leg support.

The leg support comprises a substantiallyrigid cradle I4 shown as an elongated U tube. This cradle is attached at one end to theuprights 2 and is supported intermediate its ends from one of the chairs foot treadles 6.

of tubes I5 and I6 and the interconnecting links I1, as indicated by the position of sleeve 20 in Figures 2 and 3, and when so positioned renders elements I5, I6, and IT into a substantially rigid unit from end to end. When both sleeves are moved toward the outer ends of tubes I5, I6 (Figure, 6), the transverse member may be doubled upon itself as indicated in Figures l and 5. I

The outer ends of tubes I5, I 6 terminate in ears I53 and IE3, respectively, and are provided with clips 2I connected by" screws withwingnuts 22'for ready attachment to the chair uprights'2. The ends of the legs of cradle I4 are welded 23 extends between and is pivoted to the cradle legs intermediate the ends of the cradle, "and a brace element 24 extends transversely of piece 23 and is telescopingly received in the brace element 25 provided at its end with a pivotal connection 26 terminating in a stud 21 for projectiongthrough the chair footrest treadle 6 whereit is secured by'a spring 28 and a nut 29.

Brace elements

24 and 25 are separable and may be secured in adjusted positions by a pin 30 placed in selected aligned apertures in the two parts of the brace.

From the above description, it will be seen that the leg support comprising cradle l4, transverse members [5, I6, I1, I9, 20, and

brace

24, 25 forms a complete unit, readily applicable to existing chairs by clamping clips 2| about the chair uprights and inserting connection 26 through one of the chair treadles. The cradle may then be adjusted to anyone of the positions indicated in Figure 1 by extending or retracting the

brace elements

24, 25. The cradle may be shifted from the position shown in full lines in Figure 2 to the position shown in broken lines by removing wing nuts 22 and brace nut 29, withdrawing stud 21 from one treadle 6 and inserting it. in the other treadle and reversing the transverse member end for end, thus adapting the support for" the left leg instead of the right leg.

When. the chair is to be folded, .it isonlynecessary to slide the sleeve which is over links I1, usually sleeve 20, to the outer end. of. the transverse member and remove pin 30 from the brace.

Cradle l4 may then be swung upwardly and rearwardly over seat ll (Figure 1) and the transverse member may be folded. on its. links I"! to turn the cradle in a vertical: plane as the chair side frames are moved towards each other (Figures 4, 5). and leg support is readily and quickly effected for placing the chair in an automobile, streetcar,

or in a closet, and is. just as readily and quickly opened. out when it is to be used again.

If it is desired that the leg supportbe. a part of the original equipment of the chair, suitable simple brackets could be provided on uprights 2 for attachment of the ends of the transverse member.

The leg support is shown as formed of tubular exclusive use ofthose'modificationscoming within the scope of the claims is contemplated.

What is claimed is:

1. A leg support for application to a folding chair, comprising a substantially rigid. elongated cradle, a transverse member secured to one end I of the cradle with spaced elements arranged for detachable connection to a chair, said. member comprising elongated parts arranged end to end and connected by linkage having transverse pivots at its ends to the adjacent ends of said parts, and readily releasable means for locking the linkage and parts against swinging on said pivots when said elongated parts are aligned.

2. A leg support for application to a folding chair, comprising a substantially rigid elongated cradle, a transverse member secured to one end of said cradle with itsends arranged for attachment to the sides of a chair, said member comprising elongated parts arranged end to end. and connected by linkage having transverse pivotal connections at its ends to said parts, means for locking the linkage and parts against movement about said pivots with. the. members aligned, and a brace having a pivotal connection at one end to the cradle intermediate the .ends of the latter and having a pivotal connectioniat its other end for attachment to the chair footrest.

3. A leg support as described inclaim 2 in which the brace comprises separable telescoping parts provided with interlocking .means.

This folding. operation of the chair 4. A structure as described in claim 2 in which the connection between the cradle and the transverse member is between the linkage and one end of the transverse member and the means for locking the linkage is slidable over the ends of the linkage from the other end of the transverse member.

5. A leg support for application to a folding chair, comprising a cradle, atransverse. member pivoted to one end of said cradle and comprising two elongated parts arranged end to end and pivotally connected by intermediate links so that the member may be doubled on itself, a sleeve substantially shorter than the transverse member and slidable thereon to a position over said links and the adjacent ends of said parts to lock said parts in alignment.

6. A leg support for application to a folding chair; comprising a cradle, a transverse member pivoted to one end of said cradle and comprising two elongated parts arranged end to end, and pivotally connectedby intermediate links sothat the member may be doubled on itself, av relatively short sleeve slidable along said member to a positionover one of said parts only to clear said links, and to a: position over said links and the adjacent ends of said parts to lock said parts in alignment, a brace pivoted at one end to said cradleintermediate the ends of the latter and comprising separable telescoping parts, and a removable connection securing said parts in selective assembly.

7. A folding wheel chair including wheeled sides, a seat, a back, a footrest, and a leg support having a pivotal connection to said sides to swing parallel therewith into aposition between the sides, said support normally extending'outwardly from the seat and having a two part brace extending from the'footrest to a portion of the support spaced from the seat, the chair being foldable transversely to brin the wheeled, sides to- .gethe-r, one part. of the bracebeing pivotally connected to thefootrest and the other part of the brace being pivotally connectedto the leg support and movable into position parallel thereto and movable with said support aboutits pivotal connection to said sides into position between the said sides.

8. A folding wheel chair including wheeled sides, a seat, a back, a transverse member extending between said sides near the forward edge of the seat and being pivoted to said sides and comprising elongated parts hinged together so that the member may be doubled upon itself, and a leg support extending outwardly from one of said parts and pivoted thereto to swing about the axis of said part from a position extending outwardly from the chair seat to a position between the chair si'des'abovesa-idseat.

9. A chair as described in claim 8 which includes .a footrest oneach side, there being an .adjustable brace pivotally connected to the leg support and to one of the footrests.

10. A chair as. described in claim 8 which includes a footrest on each side, there being an adjustable brace pivotally connected to the leg support and to one of the footrests, said brace being formed .of separable parts, one pivotally connected to the footrest andthexother pivotally connected to the leg support.

11. A folding wheel chair including wheeled sides, a seat, a back, .a transverse member extendingbetween said sides near the forwardedge of the seat and being pivoted to said sides and comprising elongated parts hinged together so 5 that the member may be doubled upon itself, a REFERENCES CITED leg support pivotany connected at one end to The following references are of record in the one of said parts and extending therefrom me of this patent:

perpendicularly to the axis of said part, and a brace pivotally connected at one end to said cradle 5 UNITED STATES PATENTS intermediate the ends of the latter and movable Number Name Date about its pivot to a selected position at either side 909,411 Hockney Jan. 12, 1909 of the cradle, the ends of said member being de- 2,165,529 Barie July 11, 1939 tachably secured to said sides to permit reversal 2,375,225 Herbert May 8, 1945 of the member end for end and the position 10 2,402,085 Rideout June 11, 1946 of said cradle to either of said wheeled sides. FOREIGN PATENTS Number Country Date HERMAN MART1N THOMPSON. 296,369 Germany Feb. 6. 1917