US885339A - Adjustable crutch. - Google Patents

Description

00 0 9 1 V1 2 R P A D E T N E T A P No.885Q339.

A. s. HARGROVE.

- ADJUSTABLE GRUTGH.

APPLICATION FILED DEG.24, 1907.

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UNITED sTAr-ns PATENT OFFICE.

ALBERT SIDNEY HAEtGROVE, OF MEMPHIS, TENNESSEE, ASSIGNOR OF ONE-HALF TO LUDWELL H. ESTES, OF MEMPHIS, TENNESSEE.

ADJUSTABLE cnu'ron.

Specification of Letters Patent.

Iatented April 21, 1908.

Application filed December 24, 1907. Serial No. 407,951.

To all whom it may concern:

Be it known that I, ALBERT SIDNEY HAR- onovs, a citizen of the United States, residing at Memphis, in the county of Shelby and State of Tennessee, have invented certain new and useful Improvements in Adjustable Crutches, of which the following is a specification.

This invention relates to adjustable crutches, and has for its object to provide a crutch which can be adjusted to various lengths, to suit the user.

The invention is illustrated in the accompanying drawings, in which Figure l is a plan of the crutch, partly in longitudinal section. Fig. 2 is a cross section on the line 2----2 of Fig. 1. of one of the members oi" the crutch.

The legs of the crutch are formed with up--' per and lower parts, which can be telescoped with respect to each other to make'the crutch longer or shorter. The crutch has two legs or branches each of which has an upper part 6 and-a lower art 7 which are made of metal, preferably hat round in cross section, and ollow. The section 7 is sufliciently small in size to lit and slide within the 11 per" section 6. The arm piece 8 is set on t 1e upper end of the sections 6 by. means of pins 9 which enter said sections, with a small metal brace or en port 10 to assist in holding the Each of the lower sections 7 contains a wooden bar or rod indicated at 1 1 fitting tightly within the same, which is continued below the metal section as indicated at 12,. and joins with the corresponding section from the other side and both are united to the single foot piece 13. The metal section 7 is extended downwardly beyond the angle or elbow, as indicated at 14, to give strength to the joint, which is further strengthened by a metal cross piece 15,

which may be soldered to the metal leg sec-' tions.

The upper leg sections 6 are rovided on their outer sides or faces with ongitudinal notched ribs 16, to allow for the adjustment of the handle 17. This handle has a tube 18 within the same, with right and left hand threads in opposite ends, to receive the screws 19 of eyes 20 which are of pro and shape to fit over or around cg sections 6, and engage in the notches in the ribs 16. By turning the handle 17, the screw eyes are either loosened. or tightened, and

Fig. 3 is a detail.

er size when tightened .they are drawn into the notches and the handle is so held as set. By loosening the eyes, the handle may be. pulled up or down to desired position.

As stated above, the sections 7 telesco e within the upper sections 6. To provide or fixing the parts at adjustment, each upper section 6 has a hole 21 on the inner side, atthe lower end, and each lower section 7 has a. series of corresponding holes 22, on the inner side, the latter holes being also bored a cer tain distance within the wooden piece 11, say about one fourth of an inch. A metal tube 23 is soldered between the lbwer ends of the sections 6, in line with the holes 21, and this tube has therein a pair ofsliding bolts 24 adapted to project be 0nd the ends of the tube and through the ho cs 21 and into the holes 22, whereby the leg sections are locked together. Thesebolts are normally extended and the engagementcflected by means of a coiled spring 25 therebetween. They may be retracted to unlock the parts by means of finger pieces 26 which project through a slot in the under side of the tube 23 for that pur ose.

To adjust t e length'of the crutch, the

latch bolts 24 are retracted, allowing the lower sections 'Z-to beslid up or down within the upper sections 6,. and when set at the desired length the parts are locked together by the latch bolts 24 in the manner described. This may be done without releasing the handle.

The device is capable of modification'in various of its details within the see c ofthe invention, as indicated by the ollowing claims. i

I claim:

.1. An adjustable crutch having legswith upper and lower sections which telescope, and a spring catch engageable between the sections to hold the same'as set. 2. An adjustable crutch having legs with upper and lower sections slidable one within the other, a cross piece-extending between the outer sections, and sliding bolts mounted upon the cross piece. and engageable with the respective sections of the legs to hold the same as set.

3. An adjustablecrutch having legs with upper and lower sections slidable one within the other, a cross tube extending between the outer sections, said sections having openings foot piece into which the lower ends of said bars pro3ect. 10

Intestimony whereof I affix my signature,

in presence of two Witnesses.

ALBERT SIDNEY HARGROVE. Wltnessesz L. H. ESTES, O. L. CoYNER.

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