US979959A - Combined crutch and chair. - Google Patents

Description

Y S. J. JOHNSON.

COMBINED GRUTGH AND CHAIR.

APPLIOATION FILED JUNE 29, 1909.

979,959, Patented Dec. 27, 1910.

than;

SAMUEL J. JOHNSON, OF FORT WORTH, TEXAS, ASSIGNOR 0F ONE-HALF TO THOMAS FINN, OF FORT WORTH, TEXAS.

COMBINED oRUroH AND CHAIR.

Specification of Letters Patent.

Patented 1360.27, 1910.

Application filed June 29, 1909. Serial No. 504,959.

To all whom it may concern:

Be it known that I, SAMUEL J. JOHNSON, a citizen of the United States, residing at Fort Worth, Texas, have invented certain new and useful Improvements in a Combined Crutch and Chair, of which the following is a specification.

My invention relates to crutches and chairs and more particularly to a crutch which may be converted into a chair, and the object is to provide crutches with certain simple and light and inexpensive attachments by which the crutch may be converted into a chair at the will of the user.

One object is to provide such crutch with attachments which will not increase the weight of the crutch to any considerable extent and yet make a substantial seat without impairing the usefulness of the crutch.

Other objects and advantages will be fully explained in the following description and the invention will be more particularly pointed out in the claims.

Reference is had to the accompanying drawings which form a part of this application.

Figure 1 is a front elevation of the de vice as a crutch. Fig. 2 is a perspective view of the device used as a chair. Fig. 3 is a detail view of the locking crank, being a sectional view of the crank and a portion of the crutch. Fig. 4 is a detail view of the lock for locking the device together in the use as a crutch. Fig. 5 is a horizontal section, taken along the line waa of Fig. 1, showing the metal lining of the frame pieces.

Similar characters of reference are used to indicate the same parts throughout the several views.

This device has the usual frame, consisting of the bent bars 1 and 2 and the arm rest 3. Instead of the usual cross-piece between frame pieces 1 and 2, a shaft 4 is journaled in the frame pieces and provided with a crank 5 for turning the shaft 4. An additional frame, consisting of side pieces 6 and 7, cross-bar 8 connecting the frame pieces 6 and 7 at one end,'and a locking bar 9 connecting the frame pieces 6 and 7 at the other end. The frame pieces are strengthened by thin sheet metal on three sides, as shown by Fig. 5, 10 indicating the metal is in the form of E-beams. Both frames are locked together by a spring pressed bolt or pin 11. The

frames are further locked together by the locking crank 5.

A piece of strong cloth or canvas or soft leather is attached to the shaft 4 and to the cross bar 8. By means of the crank 5, the cloth or canvas 12 is wound on the shaft 4. The crank 5 has a longitudinal slot 13 and the side of the crank next to the crutch frame is flush with the frame except along a cut out 14. A pin 15 is inserted or driven into the crutch frame 1. The object of the cut-out 14 is to prevent the crank 5 from coming in contact with the pin 15 which is for locking purposes. The crank 5 has a groove 16 in the side adjacent to the crutch frame.

The crank 5 is locked to and unlocked from the crutch frame piece 1 by a simple longitudinal movement of the crank 5 on the shaft journal 4, the slot 13 permitting longitudinal movement of the crank. As shown in Figs. 1 and 3, the crank 5 is locked against movement, but by moving the crank vertically until the cut-out 14 comes even or registers with the pin 15 the crank may be turned and thus turn the shaft 4 and the crank will not be obstructed in its turning because the cut-out 14 makes a passage way for the crank.

The two frames of the crutch are pivotally connected together at 17 so that the interior frame may be turned down to form the seat as shown in Fig. 2.

The locking crank is utilized to lock the device for use as a crutch and also for looking the device for use as a chair.

The canvas 12 is attached to the shaft 4 and to the cross bar 8. The cross bar 8 is rigidly attached to the interior frame.

When the device is used for a chair the arm piece 3 forms one foot or base for the chair and the bar 9 forms the other foot piece or base for the chair. The canvas 12 forms the seat and also a connecting means, when unrolled, for holding the two frames in operative position for a chair.

Having fully described my invention, what I claim as new and desire to secure by Letters Patent, is,-

1. In a device of the character described, a crutch member provided with a shaft forming a handle, a frame pivotally mounted in said crutch member, a flexible sheet attached to said shaft and to said frame, and a locking crank slidably engaging said shaft for Winding said sheet on said shaft and for locking said device in the form of a crutch.

2. In a device of the character described, a crutch member provided With a shaft forming a handle, a frame pivotally mounted in said crutch member and locked thereto, a flexible sheet attached to said shaft and to said frame, a pin in said crutch member, and

a locking crank slidably engaging said shaft 7 and cooperating with said pin to lock said frame Within said crutch member, said sheet cooperating with said frame and crutch member to form a chair and said crank 00- operating ith said shaft and pin to lock- 15 said device in the form of a chair.

In testimony whereof, I set my hand in the presence of two Witnesses, this 9th day t of June, 1909.

SAMUEL J. JOHNSON.

Witnesses:

A. L. JAcKsoN, B. J. LORKOWSKI.

Images