USRE4518E - Improvement in bit-braces - Google Patents

Description

H. S. BARTHOLOMEW.

Improvement in Ball Braces.

N0. 4,518. v fix issued Aug. 22,18 7 1.

Mm, dfffamzhem UNITED STATES,-

HARRY BARTHOLOMEW, OF BRISTOL, CONNECTICUT.

IMPROVEMENT IN Bl T-BRACES.

Specification forming part of Letters Patent No. 32,347, dated May 21, 1861 reissue No. 1,351, dated November 4, 1862; reissue No. 4,518, dated August 22, 1871.

DIVISION A.

To all whom it may concern:

Be it known that I, HARRY S. BARTHOLOMEW, of Bristol, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Ball-Braces, of which the following is a specification:

'My invention consists in the employment of an undivided ball-shaped hand-block applied to the bow-shaped part of a bit-brace.

In the accompanying drawing, Figure l is a section showing my invention in an incompleted state, and Fig. 2 is a side elevation of my invention.

hand-block B may be secured in many other ways, as by a groove and pin. After the ball B is secured in place the rod A is formed into the bow-shaped part of the brace, as shown in Fig. 2. The breast-block C and bit-holder D can be secured in any proper manner.

By my invention I produce a hand-block for bitbraces which can be made and secured at a less cost than. any other heretofore used. It is much stronger and presents a much smoother surface to the hands of the operator than divided and pinned ball.

I claim as my invention- The ball-brace A, provided with an undivided hand-block, B, fitted upon. its bow-shaped portion, substantially as and for the purposes described.

HARRY S. BARTHOLOMEVV.

Witnesses JAMES SHEPARD, HENRY GooDNow.

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