US 347321 A
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Description (OCR text may contain errors)
' 0. CLARKE.
Patented Aug. 1'7, 1886.
N. PETERS Phoio-Lillwgmpher, Washingtnn, n. c
UNITED STATES PATENT OFFICE.
CHRISTOPHER CLARKE, OF NORTHAMPTON, MASSACHUSETTS.
INVALI D-CHAI R.
SPECIFICATION forming part of Letters Patent No. 347,321, dated August 17, 1886.
- Application filed December 23, 1885. Serial No. 186,510. (No model.)
To all whom it may concern.-
Be it known that I, CHRISTOPHER CLARKE, a citizen of the United States, residing at Northampton, county of Hampshire, State of Massachusetts, have invented a new and useful Improvement in Invalid-Chairs, of which the perspective view of my device combined with their leg so supported, the greatest relief is a chair. Fig. II is a perspective view of the same detached, and Fig. III is a detail view of a part in plan.
T0 the class of patients whose legs from the hip-joint require to be held constantly rigid, and who are able to sit up in a chair with to conform to the front frame of a chair, as A,
and provided with bolts b b or other convenient means of attachment to said framework of the chair.
0 is a brace from the frame B to a leg or round of the chair.
The bolts b b and brace c are preferably arranged to hold the frame'B in a horizontal position and immediately below the chaircushion.
From the rear end of the frameB its side is curved, to leave room for a well leg to rest and move to one side of the frame.
D is a cam, hinged at d between the sides of frame B, provided with a handle, H, outside of the frame B and in easy access to one sitting in the chair, and provided upon one face with a number of transverse holes, h, any one of which can be brought by handle H to coincide with a hole, 45, through two sides of frame B.
I is a pin removable from frame B from its inner side, and adapted to pass through both sides of the frame and the intermediate cam, D, and to be easily operated from the chair.
0 is a board or rest for the leg, adapted upon its upper surface by pads o 0 to conform to the leg to support and hold it comfortably, adapted to rest between its ends upon the broad surface of cam D when said cam is projected above the surface of frame 13, and upon the frame itself when the cam is below, and hinged at y at its rear end to frame B.
In operation the occupant of the chair by reaching forward can with one hand, by means of lever-hand1e H and cam D, raise his leg to the desired angle, and with the other hand, by means of pin I, secure it.
The cam D, with its pin I and holes 71, is illustrated as a type of a variety of forms which may be given the operatingcam without a departure from the spirit of my invention.
The device as shown is made reversible, to adapt it to either side of a chair for either leg requiring it, the only changes required from the position of the parts shown being the reversal of the frame B as it is shifted to the other side of the chair, the swinging of the the front of a chair to project therefrom in an rotated, and an operating-handle, H, for ro= approxiniately-horizontal position, a support, tating the cam, and means, as I, for locking it 10 O, hinged at the rear of frame B and above it, in the required position all combined and and adapted to hold an extended leg of the operating as and for the purpose set forth.
occupant of the chair and bear itself upon CHRISTOPHER CLARKE. frame B, a cam, D, positioned between sup- Witnesses: port 0 and frame B to bear against both, and R. F. HYDE,
adapted to swing the support 0 upon being I F. R. RICHMOND.