US1739260A - Invalid chair - Google Patents

Description

Dec. 10, 1 29. I M. E. ROE 1,739,260

INVALID CHAIR Filed May 12. 1926 2 SheebS-Shee'b l INVENTOR V I'I Dec. 1 0,

M. E. ROE 1,739,260

INVALID CHAIR Filed May 12, 1926 2 Sheets-Sheet 2 iNvENToR Patented Dec. 10, 19 29 U NlTED STATES PATENT OFFICE 'MAYO non, or ELYRIA, OHIO, ASSIGNOR TO THE "coLsoN COMPANY, or ELYRIA, OHIO, A conronarron or 'oHIo INVALID CHAIR A Application filed May 12, 1926. Serial No. 108,499.

.Myinvention relates to invalid chairs and relates more particularly to invalid chairs of the type of employing two transversely aligned forwardwheels and a third trailing wheel; 1

-An' object of my invention is .to provide an invalid chair of theabove type which will not readily tilt when the weight of'the ,rider isshifted forwardly, so that its center of gravity is forward of the two transversely aligned vehicle wheels.

Another object of my invention is to pro-'7 vide an improvedmeansfor preventing for Ward tilting of the vehicle without interfering with the free and ready egress or admission of the rider from and 'to' the chairf Another object of my invention is to provide a chair of the above type, whereinthe above advantages may be secured, and in which the leg rests are adjustable'to permit the patient using the chair to recline therein 7 Fig.1 shows a chairembodying my invention .in side elevational-viewand with the back and leg rests in upright sitting p0- sition; 7 1 f Fig- 2 shows a front elevational view'of theembodiment of Fig. 1;

Fig. 3 showsian 'elevational View of an anti-tilting bracket device comprised in the chair or the foregoing;

ig. 4 shows a plan view of the same; Fig. 5 shows an elevational view on the line 55 ofFig. 4; I

---Fig; 6 shows a side elevation of portions Another object of my invention is toseof the chair of my invention and showing oneof the two leg rests thereof and the back in, reclining position and the non-tilting bracket in to; and V Fig. 7 shows a top plan of the same.

Referring now to all of the figures of the drawings, in all of'which like parts are designated by like reference characters, at l, I show a chair seat to which, at 2, is

pivoted a back 3, which may be rotated about the pivot 2 to incline the back rearwardly from the position shown in Fig. 1

to a'position more nearly approaching the horizontal, such as that illustrated in Fig. 6' and to any of which positions the back may be'firmly held by meansof the toothed sector 4t pivoted at 5 to an arm 6 of the chair, and into the notches 7 of which sector adetent 8 is adapted to enter by virtue of the movement of a handle 9, which may be moved from a position wherein it enters I a selectedone of the notches. The arm 6 is pivotally connected at its two ends with the back 3 at-lO, adjacent its rear end, and to the arm brace 11 at the pivot 12, adjacent its forward end, the arm brace being pivotally connected at 13 with the seat 1, near the forward part of the seat. The

pivots 10, 12 and 13 are provided for the purpose of enabling the arm brace 11 and the arm .6 to yield in response to a rearward tilting of. the back 3, such as may be accomplished, as illustrated in Fig. 6. The seat and the parts carried thereon are spring mounted on the chair chassis springs 14 supporting the seat on a metal frame, comprising. frame elements 15, and which in turn are carried upon-the chassis frame 16 by supports 17 and.:.braced by brace'elements 18. The chassis-frame 16 is carried side elevation, applied therebetween a pair of wheels 19 which are rela tively'large in diameter and mounted each at opposite ends of an axle 21., Annular hand rails 22 are, asrillustrated, preferably affixed thereto for the purpose of manually propelling the vehicle. A pair of leg rests 23 and 24, having footboards 25 and 26, respectively, pivoted at their lower ends at 29, ar hinged at 27-116 slidable. leg-rests C Ii supporting boards 28, and which are adapted to be telescoped under the seat 1 within the straps 30 and 31. The straps 30 and 31 are secured by bolts, such as 32 and 33, to the bottom surface of the seat 1, and having depressed slideway portions for the reception of the sliding boards 28, which may be reciprocated Within such slideways. By telescoping the boards 28 through the slideways provided for the purpose, the leg rests may be advanced or withdrawn from a more forward to a less forward position relative to the seat. This feature is of a special advantage whenever the leg rests take a relatively elevated and horizontal posit-ion, as illustrated in Fig. 6.

A toothed sector 35 hinged at '36 to the rear face of each leg rest board, is adapted to hold the leg rest board in its elevated position, the teeth thereof engaging in a slot in the strap 37, which is rigidly setie board 28 by bolts, such as shown at The sector 35 may be lifted from its rest s aining position by iiiieans of the 3 .ed to its lower end and extended to a i on 4110 at a side a1- 1 of the vehicle. Pref-eras one of these cords will be provided for each leg rest supporting sector.

The rear wheels are carried between the is 41 of a swiveling fork mechanism, the upper end of the fork having a stem extending within a cylindrical head 42' which is rigidly secured to the rear end of the chassis frame 16 by bolts 43.

Rigidly secured to the forward part of the vehicle fi ame and lisposed adjacent the axle 21'a'nd wheels 19 of the vehicle, are a pair of brackets l5. Depending from the brackets and inclined for? thy of the Vehicle are a pair of bars 46 W1; h are secured at their upper ends tothe main frame 16 of the vehi by the bracke Five-tally mounted on i ie of swinging triangular 4? and 4:8, and secured to the each end of which is upset same in position. The lower he endants are secured to ther by pins 50 ii 51 which hold the pendants in spacer rcla" each other and have a pair of u journaled thereon adaoted when the ch c slightly forward. The n its will swing back automa. lcally on pi? in the position such as is Y shown at Fig. 6, whenever the vehicle is advanced up a stairs step such as that shown at ($1, but is prevented from rotating beyond a position as illustrated in Fig. 6, wherein the roller 52 is capable of being lifted a distance somewhat in excess of the height of an ordinary stairs step, This is accomplished because the roller 53 would engage the bar 46 if an attere at were made to rotate the pendant to a more elevated position. The bar 46 forming a stop for the pendant prevents vsaeeo overturning of the vehicle by forward tilting thereof whenever the pendant is in the position shown in dotted lines in Fig. 6.

Preferably riveted to the bar 46 interinediate its ends and adjacent the axle 21 is a plate 56 provided with an elongated slot 57 through which the axle 21 passes. The plate 56 resting upon the axle causes the bar 46 to be projected forwardly in a downward direction and has its slot elongated to permit the bar 4'6 to be advanced between the frame and wheels forwardly to vary its angular inclination whenever the bracket 45 is forced to slide alenig the frame side bar 16 to accomplish such purpose. Fig. 5 shows the method of spacing the plates at? and 18 by means of a spacing ring (52 so as to effect a loose swivelling action of the pendant upon the end of the bar.

Preferably one of the non-tilting brackets are mounted on each side of the chair between the wheels 19 and frame 16.

The non-tilting bracket is especially advantageous when the rider leans forward or when the rider is entering or leaving the vehicle and St pen the foot boards. lily so plat: ti o wheels and 53 with their supports in the longitudinal medial plane of the vehicle, on both sides of leg rests, l mu enabled to prevent tilting of the vehicle. At the same time, I so place the non-tilting means where it will not interfere with the patient entering and leaving the (hair.

It will be noted that one of the leg and feet rests can be independently raised of the other leg and foot rest, as best shown in Fig.

'1 means of the toothed sectors 35 and the thus dcscri ed my invention in a bodiinent, I am. aware that numerspirit of my invention.

1 claim:

1. l vehicle of the class described, the tion with a chair and vehicle chassis, of pair of anti-filters therefor, one end of each of th said anti-tilters secured to the chair frame and depending downwardly and forwardly therefrom, a pair of pendants pivotally supported each from one of the antitilters at its lower end, and a roller supported by each of said pendants in advance of the wheels of the vehicle.

2. In a vehicle of the class described, the combination with a reclining chair and wheel base, of a pair of anti-tilters, one end of each of the said anti-tilters detachably secured to the side frames of the vehicle and extending downwardly and forwardly thereof, apair of pendants pivoted to the lower end of the antitilters and supported adjacent the ground advanced position of the wheels which the axle of the vehicle passes to sup port said shafts in various adjusted positions, one end of each of the said anti-tilters secured to the chair frame and depending clownwardly and forwardly therefronna pair of pendants pivotally supported each at the lower end of a different one of the anti-tilters,

a pair of rollers supported by said pendants in advance of the wheels of the vehicle.

4.;In an invalid chair having a pair of forwardly disposed parallel, large propelling wheels and a trailing wheel, of an anti-tilting mechanism for the chair, comprising a nonpivotal extension thereof, a pendant pivoted to said non-pivotal extension and projecting to a point forwardly of the line of engagement of the two large wheels with the surface upon which the vehicle is placed and to the rear of a vertical plane tangent to the forward peripheral portions of said wheels, said pendants adapted to contact with the supporting surface to prevent overturning of the vehicle in a forward direction whenever the vehicle is inclined toward an overturning position aboutthe axle for the said large pro pel'ling wheels. I

5. In an invalid chair having a pair of forwardly disposed parallel, large propelling wheels and a trailing wheel, of an antitilting mechanism for the chair, comprising a portion projecting to a point forwardly of the 'line of engagement of the two large wheels with the surface upon which the vehicle is placed and to the rear ofa vertical plane tangent to the forward peripheral portions of said wheels, said extension adapted to contact with the supporting surface to prevent overturning of the vehicle in a forward direction whenever the vehicle is inclined toward an overturning position about the axle for the said large wheels, a foot rest for the vehicle disposed between the forward portions of the wheels and having its weight supporting portion disposed substantlally 1n the vertical plane of the supporting surface engaging portion of said extension.

6. In an invalid chair, the combination with a seat and a foot rest suspended from the seatand disposed forwardly thereof, of a pair of large chair supporting and propelling wheels disposed at the two sides of the chair and rotating about axes disposed substantially in the, vertical plane of the forward portion of the chair seat, and an anti tilting element projecting from frame of the chair and secured thereto at a point adjacent the wheel'axle, said point being disposed in a vertical plane to the rear of the vertical plane tangent to the forward peripheral portions of the wheels, said foot rest having its major weight supporting portion disposed to the rear of the last mentioned vertical plane, and a trailer supporting wheel for the chair disposed to the rear of the said pair of wheels.

7. In an invalid chair, the combination with a seat and a foot rest suspended from the seat and disposed forwardly thereof, of a pair of large chair supporting and propelling wheels disposed at the two sides of the chair and rotating about axes disposed substantially in the vertical plane of the forward portion of the chair seat, and an antitilting element'projecting from frame of the chair and secured thereto at a point adjacent the wheel axles, said point being disposed in a vertical plane to the rear of the vertical plane tangent to the forward peripheral portionsof the wheels, said foot rest having its major weight supporting portion disposed to the rear of the last mentioned vertical plane, and

a trailer supportingwheel for the chair dis-- posed to the rear of the said pair of wheels,

said anti-tilting element comprising a lowermost portion pivoted to and depending from the main body portion thereof and comprising a pair of supporting surface contacting parts, one of said parts being disposed more forwardly than the other part.

8. In a vehicle of the class described, the

combination of a chair and vehicle chassis,

a pair of supporting wheels, an axle upon which the wheels are mounted, and an antitilter therefor, supporting means projecting laterally of said anti-tilters having a slot therein, said ,slot adapted to receive the-axle projected therethrough to provide for adjust- .ment of the anti-tilter, a securing means adj acent the upper end of the anti-tilter adapted to secure the same to the chassis, and a pendant pivoted to the lower end of the anti-tilter.

9. In a vehicle of the class described, the combination of a chair and vehicle chassis, a pair of supporting wheels, and axle upon which the wheels are mounted, and an antitilter therefor, supporting means projecting laterally of said anti-tilter intermediate the ends thereof having a slot therein, said slot adapted to receive the axle projected therethrough to provide for adjustment of the anti-tilter, a securing means adjacent the upper end of the anti-tilter adapted to secure the same to the chassis, and a pendant pivoted to the lower end of the anti-tilter, said pendant supporting a pair of rollers in advance of the ground engaging portions of the wheels of the vehicle, and normally out of contact with the supporting surface.

In testimony whereof I hereunto affix my signature this 16th day of'April, 1926.

o MAYO E. ROE.

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