USRE704E - Improvement in tailors shears - Google Patents

Description

UNITED STATES PATENT OFFICE.

RDGHUS HEINISCH, OF NEXVARK, NEW JEBSEY.

rIMPROVEMENT IN TAILOR-S SHEARS.

Spccication forming part of Letters Patent No. 20,879, dated July 13, 1858; Reissue N0. 704, dated April 26, 1859.

To all whom it may concern.-

Beit known that 1, RoenUs Harmsen, of Newark city,in the county of Essex,in the State of New Jersey, have made certain novel and useful Improvements in Tailors Shears; and I hereby declare the following tobe a full, clear, and exact description thereof, ref erence being had to the accompanying drawings, and to the letters of reference marked thereon, which letters correspond with and constitute a part of the specieation.

In order that the public may fully understand the nature of my invention, and those Who are skilled in the art be able to construct and operate the same, I will describe it, as fol lows Figure 1 is a side View of my improved tailors shears when closed, showing the fulcruin D, having projections 1 2 to cover the slot c, more fully shown at Fig. 2, which represents the shears extended or opened preparatory to cutting cloth, or other fabric. Fig. 2 represents the shears extended, having the fnlerum or pivot, D, removed, in order to show the slot C and the position of the pivot D in the slot C when the shears are opened to the extreme width required to cut heavy cloth.

The nature of my invention consists in constructing tailors7 shears with an oblique slot in the shank ofthe lower blade, runningfrom the rear downward, and in connecting the blades by a lever, which, on the separation of cutting-edges, shall have the effect of moving the lower blade longitudinally and vertically, so as to give the lower blade a drawing eut without the effect of diminishing the extent ofthe cutting'ed ges.

When the shears are closed, as at Fig. 1, the movable blade A is drawn back by means of lever B and the oblique slot G in the elongated shank or joint E until the fulcrum or pivot D stands at the point d. Hence, as the shears are opened the under blade A is pushed forward the distance from D to d,

Fig. 2, and when being closed the blade A is drawn back as aforesaid, carrying the cloth with it, thereby performing the double purpose of feeding as well as cutting the fabric. The extension of the under blade A entirely depends on the length of the slot, which can only be used in shears having elongated shanks or joints similar to Figs. 1 and 2, letter E.

The inclination of the slot C may be as great as desired, the effect being to throw the blade downward as the jaws separate, and thus prevent the vertex of the angle formed by the cutting-edges from being earried forward and leaving an unavailable eutting portion behind it. ln case the slot C and lever B should not be used, the lengthening of the joint or shank of the blades is found to be of the utmost importance in cutting heavy fabrics, inasmuch as the leverage from the fulerum D to the hand is increased and the weight of the shears bi ing in the proper place-at lil-I am enabled to cut with less labor and greater accuracy than by any other forni of tailors7 shears ever used.

I am well aware of the different kinds` of scissors havin glonghandles with short blades, used in surgical operations andl otherwise, and tinmens shears, 85e.; consequently lengthening the distance from the i'ulcrum to the hand is not new; but constructing Irailors7 shears so that they are equally balanced by means of lengthening the heel of the blades from e to e, in combination with the slot U and lever B, I believe to be new and useful.

I do not claim elongating the upper blade of tailors shears by means of an eccentric pivot; neither do I claim a stop set in one blade and working in a curved slot inthe other, as that is fully shown in Joseph Phares improvement on tailors shears, patented September 12, 1854 but What l claim as new, and desire to secure by Letters Patent of the United States, is-

The oblique rectilinear slot C, in the elongated shank of the lower .blade A, in combination with the fulcrum D and a lever connect ing the two portions of the shears behind the fulerum, the Whole constructed and operatin g substantially as and for vthe purposes set forth.

In testimony whereof I have hereunto signed my name before two subscribing witnesses.

R. HEINISGH.

Witnesses:

GEO. PATTEN, J oHNs HoLLrNGsHEAD.

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