US345405A

US345405A - baetlbtt

Info

Publication number: US345405A
Authority: US
Publication date: 1886-07-13
Anticipated expiration: 1903-07-13

Description

J. T. BARTLBTT. Y

TRUSS.

" No. 345,405. Patented July 13, 1886.

WEE

lll.

UNITED VSTATES PATENT OFFICE. l

JASON T. BARTLETT, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO HIMSELF AND EDWARD E. BUTMAN, or sAME PLAGE.

TRUSS.

SPECIFICATION forming part-of Letters Patent No. 345,405, dated July 13, 1886.`

Application' filed May 8, 1886. Serial No. 201,605. (No model.)

To all whom, it may concern:

Be it known that I, JAsoN T. BARTLETT, a citizen of the United States, residing at Boston, in the county of Suffolk and State of Massachusetts, have invented certain Improvements in Trusses, of which the following is a full,`

clear, and exact description, reference being had to the accompanying drawings, making part of this specification, in whichx Figure l is a front elevation of a truss constructed in accordance with my invention. Fig. 2 is a plan of the pad and its supportingarm. Fig. 3 is a longitudinal vertical section of the same. section of the same on the line x x of Fig. 3. Figs. 5 and 6 are details in perspective. Fig. 7 is a vertical section through the center of the pad-plate and its socket.

My invention relates to an improvement in trusses for use in casesof hernia; and it consists in a novel combination and arrangement of parts, whereby the pad can be easily and quickly adj usted and held immovably in difterent positions with respect to its supportingarm to suit the requirements of the particular case to be treated, as hereinafter more fully described, and specifically claimed.

In the said drawings, A represents an ordinary truss-spring, and B the supporting-arm which carries the pad D, which is of the usual form. The upper end of the arm B is secured to a plate, c, at one end of the trussspring by a pivot-screw, d, on which it turns as a center, a pin, e, on the arm B tting into one of a series of holes,f, in the platee, whereby the arm may be adjusted, as desired, to vary its position with respect to the truss-spring fora rupture on the right or left side, according to the requirements of the case, the adjustment being effected by loosening the screw d to allow the pin e to be moved from one hole fto another, and then tightening the said screw to hold the parts securely together.

The arm B is connected at its lower end to the pad-plate G by means of a ball-and-socket or universal joint, the-construction of which I will now describe.

On the plate G is formed a socket, h,which is struck up from the under side, and within this socket fits a hemispherical block, i, the neck k of which extends up through the open- Fig. 4 is a transverse vertical` ing Z, Fig. 7, at the top of the socket, and is iiattened on two sides, as seen in Fig. 5, to enable it to t into a slot or aperture, m, at the end of the arm B, to which it is securedby 5 5 a flat-headed screw, u, which ts a threaded aperture in the neck of the block i, which is thus prevented from turningindependently 0f the arm B, the neck 7c extending about halfway through the slot m, as seen in Figs. 8 and 6o 4, 1and being prevented by its iiattened sides from turning within the said slot. Between the under side of the arm B and the socket h is placed an inverted cup, q,which fits closely over the outside of the socket h, and is provided with a central aperture,r,through which extends the neck k of the block i. At the top of the cup q,on opposite sides of the same,are formed two projections, s s, Fig. 6, which are in line with the iiattenedupper portion of the 7o neck k, and t snugly within the slot or aperture m of the arm B, extending about half-way through the same, the under side of the arm resting on the shoulderst t of the cup, and thus lwhen the screw a is turned down firmly in place the cup g is prevented by the projections s from turning independently of the arm B, and is locked immovably thereto.

The neck 7c and cup q can be moved longitudinally within the's'lot m to vary the eftect- 8o ive length of the arm B,but,if desired,a square aperture can be employed instead of a slot. I prefer the slot, however, on account of the advantages of the adjustment which it affords.

When the screw nis loosened,the above-de- 8 5 scribed universal joint will allow the pad D to be easily and quickly adjusted in any position, or at any angle desired to press inward and upward, or otherwise, according to the particular requirements of the case to be 9o treated, after which it is secured immovably in place by tightening the said screw n,which not only causes the block i to be drawn up tightly against the inside of the socket h, but also, by reason of the arm B resting on the shoulders t of the cup q, causes the interior of the latter to be pressed downward against the outside of the socket h, the area of the bearing-surfaces and consequent friction being thus materially increased, whereby,wl1en the parts Ioo are clamped by the screw a after having been adjusted, all liability of slip is avoided,which D, of the pad-plate G,having the socket h, the

block ,tting Within said socket, and having a neck, Ic, extending up through the same,the cup q,itting over the outside of the socket 71., and having the projections s s, shoulders t t,

and aperture r for the passage oi' the neck 7c, the pad-supporting arm B, provided with an aperture for the reception of the upper end of zo the neck 7c and the projections s .s of the cup,

and the clamping-screw n, adapted to enter the neck k and simultaneously draw the block against the interior of the socket 7L and force the cup q down upon the outside of the same, all operating substantially in the manner and for the purpose set forth.

Witness my hand this 10th day of March, A. D. 1886.

JASON T. BARTLETT.

In presence of- P. E. TEsoHEMAonER, IV. J. CAMBRIDGE.