US246165A

US246165A - Manufacture of shears

Info

Publication number: US246165A
Authority: US
Publication date: 1881-08-23
Anticipated expiration: 1898-08-23

Description

(No Model.)

B. A. LONGDON.

MANUFACTURE OF SHEARS. No.- 246,165. Patented Aug. 25,1881.

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NI'IED STATES PATENT OFFICE.

ELMER A. LONGDON, OF BRIDGEPORT, CONNECTICUT.

MANUFACTURE OF SH EARS.

SPECIFICATION forming part of Letters Patent No. 246,165, dated August 23, 1881.

Application filed January 7, 1881.

To all whom it may concern:

Be it known that I, ELMER A. LONGDON, of Bridgeport, Fairfield coun ty,-,Conneeticut,have invented certain Improvementsin the Man ufacture of Shears, of which the following is the specification.

The object of my invention is to produce scissor's of greater strength and less liability to defacement than those heretofore made; and this I effect by constructing them in the manner hereinafter described, and illustrated in the accompanying drawings, in which- Figure 1 is an edge view, showing the detached parts constructed in the ordinary manner to form a scissors-section, one blade being Fig. 2 is a plan showing such section completed; Fig. 3, a view showing the forms of sections used in my improved mode of manufacture; Fig. 4, a plan of the handlesection; Fig. 5, a plan of the blade-section.

The ordinary mode of constructing scissors consists in forming the cast-iron handle A, Fig. 1, with a flat projection, a, and lug 0, and the steel blade B with a hole, 6, to receive the lug, the end of the handle overlying the inner end of the blade, to which it is secured by welding. The section thus made, when formed, grooved, and finished in the ordinary manner, presents a polished surface extending from the point 00 to the end y, and a shoulder, a, at the point where the cast-iron handle terminates, said shoulder resulting from the beveling of the blade in forming the cutting-edge e. As a result of this mode of manufacturing, the weld is formed at the weakest portion, 2; but the main objection is that the exposed polished surfaceis partly upon the cast-iron and partly upon the steel portion of the article, so that when subjected to moisture or fumes the portion between the point z and the japanned or coated portion of the handle A will quickly tarnish and become rusty,the remainder of the blade retaining the polish.

The imperfect welding of the metals at the point z, where the handle terminates over the blade, is apt to form seams and scars upon the upper face, which mar the appearance of the (No model.)

article. I overcome these objections by constructing the handle portion A, Fig. 3, with a flatprojection, (I, having a shoulder, s, which, with said projection, forms a sunken portion adapted to receive the end of the blade B, which end is reduced in thickness and extends back to the shoulder s, or as far as the blade is polished, and I form the lug 0 on the under side of the blade to fit a hole, e, in the handle. When the blade is welded to the handle thejunction at the shoulder s is concealed, however imperfect the weld may be, while the shoulder a, being in the body of the steel, and not at a point of union of the sections, is less apt to detract from the strength of the article. One of the main advantages, however, is that the entire finished and polished portion of the article is of steel, (no iron being exposed.) Consequently the brightness and luster of the metal is preserved wherever the same is uncoated.

I am aware thatit has been common to cast the handle directly upon the steel blade with part of the cast portion overlying the steel; but this mode of manufacture is not adapted to the quality of articles that I make, nor does it result in forming the whole exposed surface of steel. So, also, a tongue at the end of the steel blade has been let into a recess in the iron handle; but in such case a portion of the handle is exposed and will tarnish, as will also the iron rivets heretofore used for riveting the overlying steel blade to the iron handle. Ido not claim any of the above-named features; but

I claim- The combination, in a scissors-section, of a steel blade, B, with a lug, c, at its rear end, and a cast-metal handle, A, formed with a shoulder, s, tongue 61, and perforation e, riveted and welded together with the end of the steel blade abutting against the shoulder s, as set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

ELMER A. LONGDON.

Witnesses:

J. E. WILsoN, H. A. HOUSE, Jr.