US260035A

US260035A - Shears

Info

Publication number: US260035A
Authority: US
Publication date: 1882-06-27
Anticipated expiration: 1899-06-27

Description

A. J. LYTLE.

(No Model.)

vSHBARS.

No. 260,035; Patented June 21, 1882;

' [NVENTOR A TTORNEY WITNESSES.*

PATENT OFFICE.. v

ANDREW J. LYTLE, 6F HILLSBOROUGH, OHIO.

s-EARs.

sPEcroAcroN forming part of Letters Patent No. 260,035, dated June 27, 1882.

Application filed March 13, 1882. (No model.)

To all whom 'it may concern Be itpknown that I, ANDREW J. LYTLE, of Hillsborough, in the county of Highland and State of Ohio, have invented certain new and useful Improvements in Shears, of which the following is aspecification, reference being had to the accompanyin g drawings, in which- Figure 1 is a side view of the shears; Fig.. 2, a vertical section through the cutting parts, and Fig. 3 a plan of the lower jaw.

This invention pertains to cloth-cutting and similarshears havin g a penetrati ng-blade working into a slot, and relates to the form,position, and attachment of the blade forming the cutting side of the slot.

The two levers A and C are pivoted at J, as

usual, and the upper lever-jaw has a 'cuttingv blade, B, attached. This blade B is thin and keen, as shown in Fig. 2, and, being removable from the lever-jaw, is easily kept sharp. These shears in their action involve penetration rather than detrusion. The keen penetrating-blade B' shears into a slot, I, formed in the lowerjaw,

A, one side of which is set higher than the other, as shown in Fig. 2 at F, and this higher surface is 'of harden'ed steel 'and brought to a keen corner.

The elevation' of the surface F is not essential, but is found to aid the cutting action by permitting the separated goods to fall away slightly, and thus give more freedom to the cutting-blade B.

The slot I is formed b v the jaw U on one side an'd by the bed-blade E on the other side, as shown. The bed-blade E is a piece of sheetsteel attached against the jaw 0 by screws Gr, or equivalent means, the space 1 between the plates being secured by.space-blocks D, cast upon the side of jaw C into which the screws Gr are screwed. Loose space-blocks not integral with thejaw can of course be used.

The penetratin g-blade B and bed-bladeE are screwed against surfaces facing in the same direction. By this means, in the process of manufacture, the levers may be pivoted together and the seating-surfaces for the blades dressed at one operation.

In orderto lighten and cheapen the bedblade E without materially weakening it sidewise, I make it of very thin steel and strikeit up in angle form, as shown in Fig. 2. By this means the actual surface against which the blade B may rub is much reduced and the corner can be more easily sh arpened. This anglebearing on the top of the space-blocks relieves the attaching-screws G of nuch of their strain. The jaw O is of sufficient depth to form a safety-guard for the blade B w hen shut, and the bed-blade E is made of similar depth.

I claim as my inveution 'I. In a shear having a penetrating-blade .adapted to work into and cut against one side of a slot, the combination, with such blade, of an opposite jaw to` form one side of the slot and a detacl able bed-blade fixcd alongside said ja'w and set with its cutting-edge above the level of said jaw to form an opposite and higher side for said slot, substatially as and for the purpose set forth."

- 2. A shear-blade formed of sheet metal longitudinally bent into an gle-section and adapted to shear across the thin edge of the metal, as set forth.

3. In a shear having a dctachable blade.

formed of sheet metal bent longitudinally into angle-section,thecomhination,with suchblade,

of an attaching-surface arranged to bear against the inner surface of such blade, and also against the under surface of the horizontal part of such blade, whereby the horizontal support of the blade, by means of the angle, tends to relieve the screws or rivets from downward strain, as set forth.

ANDREW J.. LYTLE.

Witnesses:

J. W. SEE, J oHN LoRENz.