US62663A

US62663A - John n

Info

Publication number: US62663A
Authority: US
Publication date: 1867-03-05
Anticipated expiration: 1884-03-05

Description

a metallic frame, E, which permits of their being raised or lowered, as desired.

@eine taiea atm @ffice JOHN N. MCMULLEN, OF WAEST LIBERTY, OHIO.

i Letterslatent No. 62,663, :fated Illarch 5, ISST.

IMPROVEMENT IN INVALID GHAIRS.

TO ALL WI-IOM II MAY CONCERN:

Be it known that I, JOHN N. McMULLEN, of West Liberty, in the county of Logan, and State of Ohio, have inventedl a new and useful Improvement in Invalid Chairs; and I do hereby declare that the following is 'a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same, reference being had to the accompanying` drawings, forming part of' this specication, in Which- Figure I is a central vertical section of an invalid chair, with my improvement applied thereto,

Figure 2 is a plan or top view of the chair.

Similar letters ot' reference indicate like parts.

This invention relates 'to the manner of operating the back 'and foot-rest of the chair.

My invention consists in the employment ot` a shaft, arranged transversely under the seat of -the chair, to which is connected a belt or belts, having its outer ends-those not connected to the roller--secnred, respectively, to .the back'ot' the chair and to the bottom of the foot'rest; and said roller being also provided with a toothed wheel, having a crank, which, in connection with a pawl, enables the person occupying the chair to give both the hack and foot-rest the desired inclination.

A designates the seat, and .B the hac'lg'and C the foot-rest ot' the chair. The back and seat are jointed to V To these parts I lay no claim. F is a shaft, arranged under the seat of the chair, and having its bearings in opposite sides of the chair frame. One end of the roller is provided with a toothed wheel a, which carries a crank, Z7, for rotatingiti A pawl, o, is also secured to the frame of the chair, and arranged in such manner that when engaged with the toothed wheel a it will prevent its rotatingdn either direction. To the pawl'is connected a hand-lever,'d, which may be readily taken hold of by the occupant of the chair for disengaging the pawl from-the toothed wheel. A

belt, G, which, in the present instance, is composed of webbingfis secured to the shaft F; its other or outerends being secured, respectively, to the backend foot-rests of the chair in such manner that when the portion of the belt between the bars II H and the roller is taut, that between the foot-rest and the roller will be slack, and oz'ce versa. The effect of this is, that on rotating thcshaft in one direction, the belt on the one side of the rollerfdraws down the back of 4the chair, andl this, through the medium of the hinged metallic-frame E, throws the foot-rest upwards. This places the chair in a position for reclining. On the other hand, when the shaft is rotated so as towind up the belt between it and the foot-rest, it draws down the foot-rest', and, through the same medium, E, causes the back to assume a vertical position. i

This means for operating an invalid chair is simple and elicient. What I claim as new, and desire tosecure'by Letters Patent, is The combination of the shaft F, belt G, toothed wheel a, with its crank b and pawl e, With seat A, back B, feet-rest C, and frame E, substantially as and for the purpose described.

` JOHN N. MQMULLEN.

Witnesses:

R. N. J onDAN, J. W. SMITH.