US103516A - Improvement in trusses - Google Patents

Description

To all whom'it may concern WILLiAM JAMESv SMITH, or TREVILLIANs VIRGINIA, AssIeNon To HIM SELF AND GEORGE W. MAY, 0F SAME PLACE.

Letters .Patent No. 103,516, dated .May 24, 1870.

IMPROVEMENT IN TRUSSES.

The Schedule referred to in these Letters Patent and making paltof the name.

Be it known that I, WILLIAM J Mns SMITH, of

'lrevillians, in the county of Louisa and State of Vir-- ginia, have invented a new and useful Improvement in '.lruss; and I do hereby declare that the following is a full and exact description of the same, reference being' had tothe accompanying drawings and to the let tels of reference marked thereon.

This invention relates to that class of trusses which are provided with adjustable pressurepads, and consists in the employment of a button-screw upon the truss proper, in. connection with teeth-or cogs upon the rear end of the hinged arm supporting the pad, for the purpose of enabling the truss to be easily and accurately adjusted by the patient to suit the requirements of his case.

The details of` construction will be fully described hereinafter;A y l I'n the drawings- Figure 1 represents a perspective view of Vmy improved truss, and i Figure 2,a side elevation of a portion detached. To enable others skilled in the art to'make and use my invention, I will now proceed tol describe fully its .construction and manner of operation.`

A represents a Vsuitable curved metallic strip, to

which is attached, by means of set-screws, the slotted end piece B.

O represents a slotted arm, which is attached to the piece B by means of a hinge-joint, as shown.

E represents the pad, which is secured to the arm` C by means of the screw c.

The rear Vend of the armC, it will be observed, is

provided with teeth or cogs, with which .the buttonscrew 7), located upon the piece B, engages.

The operation 'is as follows:

By means of the slot in the piece B, and the setscrews which secure it to the strip A, the length of the truss can be adjusted at will.

y By means of the slot iu the arm C, and the screw which secures the pad to it, the relative distance of thefpad from the piece B can also he changed when desired. v

By means of the hinged arm C, and its teeth c, and the bntton-screw b, the position of' the pad audits pressure may be nicely adjusted to suit the requirements of' the case. This is accomplished, it will be readily understood, by simply revolving the buttonscrew, the threads of which engage with the teeth c', and cause them to rise or fall, according to the direction in which the screw is. revolved. This movement of the teeth causes the front endof the arm, which is, in fact, the long arm of a lever, to be moved in the opposite direction.

As the slightest movement of the screw will cause the pad to' advance or recede, it is manifest that very nice adjustments canbe made by this device.

- The truss, as a whole, is simple .in all its parts, and

not liable to get out of order. It is also well'adapted for the purposes for which it is intended.

I do not claim the .manner of adjusting the truss proper by means of a slot and set-screws; perdo I claim, broadly, the employment of a screw for the adjustment of a pad; but, l

Having thus fully described my invention,-

What I claim as new, and desire to secure by Let ters Patent, is l In a truss of substantially the described construction, the button-screw b upon the piece B, in combination with the teeth c uponv the pad-arm C, when the parts are arranged as and for the purpose described.

This specification signed and witnessed this 27th day of' April, 1870.

WILLIAM J. SMITH.

Witnesses:

I. W. VALENTINE, C. VALENTINE.

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