US770551A - Shears - Google Patents

Description

No. 770,551. PATENTED SEPT. 20, 1904.

- E. BLASBERG.

SHBARS.

APPLICATION FILED FEB.13, 1904.

NO MODEL.

fie, AITOHAIEYS,

UNiTn STATES Patented September 20, 1904.

ATENT Orricn.

EMIL BLASBERG, OF DETROIT, MICHIGAN, ASSIGNOR TO JOHN H.

OLAUSS, OF FREMONT, OHIO. A

SHEARS.

SPECIFICATION forming part 01' Letters Patent No. 770,551, dated September 20, 1904.

Application filed February 13, 1904. Serial No. 193,380. (No model.)

To all whom it may concern:

Be it known that I, EMIL BLASBERG, a citizen of the United States of America, residing at Detroit, in the county of Wayne and State of Michigan, have invented certain new and useful Improvements in Shears; and I hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use the same.

This invention relates to improvements in shears.

The object of this invention is to provide means for preventing the pivot-pin which secures the shear-blades together from working loose.

The invention therefore consists in providing a short arm which is secured to the blade in which is formed the screw-threaded bore which receives the screw-threaded end of the pivot-pin; and the free end of said arm intervenes between the other blade and the head of the pivot-pin, so as to entirely prevent or eliminate any friction between the last-mentioned blade and the said pivot-pin.

My invention also consists in the features of construction and combination of parts, as described in the specification, pointed out in the claims, and illustrated in the drawings.

In the accompanying drawings, Figure 1 is a view of a shears embodying the invention in the preferred form. Fig. 2 is a section on line 2 2, Fig. l.

In the accompanying drawings, 1 represents the shear-blade, in which is formed a screw-threaded bore 2 for receiving the screw-threaded end of the pivot-pin 3, which secures the blades together. The other blade, 4, is provided with a smooth bore 5, so that it turns freely on the pivot-pin 3, while the pin 3 remains stationary in the blade 1. In my preferred construction the bore 5 in the blade 4 is formed larger than the bore 2 in the blade 1.

9representsa short arm, preferably of steel or other resilient material, which is secured to tervenes between the head of the pivot-pin and the blade 4 the movement of the blade 4 will not have any tendency to loosen the pivotpin and as the arm is secured on the blade 1 the pivot-pin will of course move with the said blade, and therefore the movement of the blade 1 will have no tendency to loosen the said pivot-pin. Also if the pivot-pin should be loosened in any manner, as by dropping the shears, the resilient arm will holdthe blade 4 against the blade 1 until the pivot-pin can be tightened.

What I claim is 1. A shears comprising a blade, a pivot-pin screwed into said blade, a blade having a pivotpin hole larger in diameter than said pivotpin mounted on said pivot-pin, a bearing-ring arranged in the pivot-pin hole of the last-mentioned blade so as to intervene between said last-mentioned blade and the pivot-pin, and means for securing said bearing-ring to the first-mentioned blade to prevent said bearingring from turning on the pivot-pin.

2. A shears comprising a blade, a pivot-pin screwed into said blade,a blade having a pivotpin hole larger in. diameter than said pivotpin mounted on said pivot-pin, a bearing-ring arranged in the pivot-pin hole in'the last-mentioned blade so as to intervene between said last-mentioned blade and said'pivot-pin, said bearing-ring being provided with a seat for the head of said pivot pin and means for securing said bearing-ring to the first-mentioned blade to prevent said bearing-ring from turning on the pivot-pin.

3. A shears comprising a blade, a pivot-pin screwed into said blade, a blade,having apivotpin hole larger in diameter than said pivotpin, mounted on said pivot-pin, a bearingspecification, in the presence of two Witnesses, ring arranged in the pivot-pin hole so as to inthis 5th day of January, 1904. tervene between the said last-mentioned blade and the pivot-pin and an arm formed integral EMIL BLASBERG' 5 with said bearing-ring, substantially as de- Witnesses:

scribed and for the purpose set forth. A. MILLER,

In testimony whereof I sign the foregoing A. G. MOPHERSON.

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