US477343A

US477343A - Shears

Info

Publication number: US477343A
Authority: US
Publication date: 1892-06-21
Anticipated expiration: 1909-06-21

Description

(No Model.)

E. P. WEBER. SHEARS.

Patented June 21, 1892.

Snom/hoz possible ease and without the use of a screwmetal, preferably formed, as represented in UNITED STATES PATENT OFFICE.

EDWARD, F. WEBER, OF READING, PENNSYLVANIA.

SHEARS.

SPECIFICATION forming part of Letters Patent No.` 477,343, dated June 21, 1892.

Application iilcd December 29, 1891.

To all whom it mayiconacrn:

Be it known thatvI, EDWARD F. VEBER, a subject of the Emperor of Germany, residing at Reading, in the county of Berks, State ot' Pennsylvania, have invented certain I mprovements in Scissors or Shears, of which the following is a specification.

My invention relates to that class of scissors or shears in which the blades are held together by a spring so as to maintain proper contact of the cutting-edges.

My main objects are, first, to enable the blades to be taken apart with the greatest driver or any tool whatever, and, second, to enable the tension of the spring to be readily varied without employing an ad j Listing-screw. These objects I attain by means of a very simple and inexpensive construction, the essential features of which will be fully explained in connection with the accompanying drawings.

Figure 1 is a plan view of a pair of scissors having my invention adapted thereto, the blades being represented as closed. Fig. 2 is apartial edge view of the same on an enlarged scale. Fig. 3 is a view similar to Fig. 1, butf' shows theblades opened and indicates the inanner of removing or placing in position the spring-plate. Figs. 4 and 5 show the springplate and pivot-pin in detail.

The blades A and A', of any ordinary construction,are provided with holes for the passage of the pivot-pin B, by which they ai'e connected. The pin is represented as formed with a head b and a body of uniform diameter which lits loosely in the pivot-holes, but the projecting portion of which beyond the pivot-blades is grooved on opposite sides, as shown at b b. The means by which this pin is held in place and the blades are maintained in proper contact, whether opened or closed, consists merely of a spring-plate C, of sheet Fig. 4, with a forked end c', a narrower opposite end c, and an intermediate lug or projection c2 from the convex surface. The pivot B being in position, the forked end of this spring-plate is entered in the grooves or recesses b b in the mannerindicated in Fig. 3 and the end c is pushed sidewise, with a slight strain upon the spring, into engagement with one of a series of notches or kerfs d, formed in the outer face of one (or both) of the blades at different distances from the Serial No. 416,451. (No model.)

pivot. The connection of the blades is then complete,the outer face of the spring serving to hold the head b of the pivot-pin firmly against the blade A by pressing against the portion of the projecting pin which overliangs the grooves b b', while its ends c and c bear upon the blade A', thus holding the two blades in contact.

If it is desired that the spring-pressure be increased or diminished, it is only necessary to push or pull upon the lug c2, so as to move the end c of the spring-plate forward or backward into a different notch or recess a. The blades, though thus securely held together, may be taken apart in a moment for cleaning, oiling, or sharpening Without the use of a screw-driver or other tool. These advantages over prior devices involving the use of springs to maintain the blades in contaet, as well as the superior economy and simplicity 0f my construction, will be readily understood.

I do not desire to limit myself to the exact construction herein described and shown; but

What I claim is- 1. The combination, with the scissor-blades, of a headed pivot-pin passing through said blades, and the forked spring-plate C, engaging, intermediately, the projecting portion of the pin and having its opposite ends bearing upon one of the blades, said spring-plate being independently removable, substantially in the manner Vand for the purpose set forth.

2. The combination, with the scissor-blades, of a headed pivot-pin passing through said blades, and a spring-plate having a forked end engaging the projecting portion of said pin and its opposite endadapted to engagea series of notchesain the plate upon which 1t bears, substantially as and for the purpose set forth. Y

3. The coinbination,-with the scissor-blades provided witha series of notches a and a pivot-pin connecting the same, of the forked spring-plate having one end adapted to engage said notches and a projection c2 thereon whereby to adjust the same, substantially as set forth.

In testimony whereof I aliix mysignature in presence of two witnesses.

EDWARD F. WEBER.

Witnesses:

ADAM L. OTTERBEIN, W. G. STEWART.

IOO