US261777A - Thomas austin soeby and eobeet henry soebt - Google Patents

Description

(No Model.)

T'. A. 80 R. H. SORBY.

SHEEP SHEARS.

No. 261,777. Patented July 25, 1882.

Wi d; 20%;,

n. PEYERS, Fhokruthogmphar. wmm m. n. c.

UNITED STATES THOMAS AUSTIN SORBY AND ROBERT HENRY SORBY, OF SHEFFIELD PATENT OFFICE.

COUNTY OF YORK, ENGLAND.

SH EEP-SH EARS.

SPECIFICATION forming part of Letters Application filed July is, 1881. (No model.)

To all whom it may concern:

Be it known that we, THOMAS AUSTIN Son- BY and ROBERT HENRY SoaBY, citizens of Great Britain, residing at Sheffield, in the county of York, England, have invented certain new and useful Improvements in Sheep- Shears; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled 10 in the art to which it appertains to make and use the same, reference being had to the accompan yin g drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

This invention relates to shears.

The nature of said invention consists in the. combination of a pair of shears having the bow thereof made in one piece, with a spring plate or plates attached to said bow to give elasticity thereto.

Hitherto shears have generally beenmade of thin sheet or plate iron or steel, the elasticity of the bow itself being relied upon to separate the blades. Frequent use, however, lessens the elasticity of the how, so that after a while it will no longer act-as a spring, and the shears become of little value. In some instances shears have been made with the bow divided at the middle, and provided with a 0 plate that spans the joint and fastens the parts together. The entire strength of the shears, when thus constructed, resides in the fastening plate, since, if this plate be broken, the two parts of the shears will necessarily separate. -To avoid the difficulties ot'these constructions we make our shears in such a manner that their elasticity is notdependen ton the bow, nor their strength on that of the spring-plate.

In the accom pan yin g drawings, Figure 1 rep- 40 resentsafrontelevation oi'ourimproved shears;

Fig. 2, an edge view of the same; Fig. 3, a front detail elevation of the bow; Fig. 4, an end view of the same; Fig. 5, a front detail elevation ofa modification 5 Fig. 6, an end view of the same; Fig. 7, a front detail view of another modification, and Fig. 8 an end view of the same.

In said drawings, B designates the bow of a pair of shears, said how being formed of one pieceof metal,havin g the blades welded thereto.

Patent No. 261,777, dated July 25, 1882.

Patented in England March 11, 1881, No. 1,042.

To the inside of said how a plate, A, of spring metal, is attached by rivets B. This plate may be of equal width with the bow, or narrower, and may be fastened in the middle instead of near the ends. It fits against the inside of said how and operates to throw the blades open. The fracture of said spring will,

however, leave said how intact, and a new spring-plate maybe easily substituted whenever the old one becomes inefficient without separating the blades from one anothen As the operation of opening the shears is performed by this spring-plate A, it is obvious that the bow itself will be relieved of strain, and will be in good condition long after it would be bent out of shape and elasticity if said spring-plate were wanting.

Instead of attaching a spring-plate, A, to

the inside of the bow, we sometimes attach a Having thus fully described our invention and acknowledged the prior state of the art,

what we claim as new, and desire to secure by Letters Patent, is-- A pair of shears having the bow in one piece of metal and a spring plate or plates attached to said bow for the purpose of opening the said shears, substantially as set forth.

In te timony whereof we affix our signatures in presence of two witnesses. v

THOMAS AUSTIN SORBY. ROBERT HENRY SORBY.

Witnesses:

CHARLES REGKETTS,

Clerk. JOSEPH FROST,

Manager.

Images