US523908A - Shears - Google Patents

Description

(No Model.)

. O. N. SLY. MAGHINE FOR SHARPBNING SHEARS.

No. 523,908. Patented July 31,1894.

A'IENT FFITQEQ CHARLES N. SLY, OF MEDINA, NEW YORK, ASSIGN OR OF ONE-HALF TO GEORGE E. WADLEIGH,'OF SAME PLACE.

MACHINE FOR SHARPENING SHEARS.

SPECIFICATION forming part of Letters Patent N 0. 523,908, dated July 31, 1894.

Application filed April 13, 1894. Serial No. 507,492. (No model.)

To all whom it may concern;

Be it known that I, CHARLES N. SLY, a citizen of the United States, residing at Medina, 1n the county of Orleans and State of New York, have invented certain new and useful Improvements in Machines for Sharpening Shears, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to a new and improved device for sharpening shears and similar articles, and it has for its object to prov de a simple, efficient and inexpensive de: vice, by the use of which the shears may be readily sharpened without the necessity of separating the blades thereof.

Another object of the invention is to produce a device which may be easily set up in position for use, and when not required may be readily taken to pieces for convenient packing in a box or other suitable place of storage.-

The lnventlon consists in the novel combi-" nation and arrangement of parts as will be more fully hereinafter set forth and particularly ascertained by the claims appended.

In the drawings:Figure 1 is a side elevation of the invention complete. Fig. 2 is a detail sectional view showing the clamping head. Fig. 3 is a perspective view of the dev ce complete. Fig. 4 is a detail perspective view showing the reinovability of the track supporting bracket.

Referring to the drawings the letterA designates the support for the mechanism; A a stationary bracket secured to one end thereof, said bracket being formed with outwardly extending lugs A; D is a removable bracket which is formed with the vertical bar D by means of which it is supported on the lugs A", and a horizontal arm or track 0 which is formed atthe upper end of the bar D and extends longitudinally of the box or support A, and is provided at each of its ends with transversepins C.

On the track 0 the rear depending bifurcated end E of an arm E slides, said bifurcated end embracing the track as shown. This arm E extends upwardly and forwardly, its forward end being enlarged and bifurcated, said bifurcation forming longitudinal parallel plates G. Between these plates, at their lower ends, is pivoted a clamping jaw a whose clamping portion extends below the plates- An extension I) is formed on the jaw a above its pivot, and said extension projects upwardly between the plates G and is provided with a series of perforations K which register with perforations in the plates G.

By means of this construction the jawct may be placed at the desired angle to secure the required bevel on the instrument to be sharpened, and is then looked in this adjusted position by a removable pin or boltK which is passed through one of the registering perforations in plates G and the extension b.

Carried by jaw a is an adjustable clamping jaw a which is formed witha rearwardly'extending guide-pin c which projects loosely through an opening in the jaw a and serves to guide the jaw a as it is adjusted to and from the jaw 0,. A tube b is formed on the rear side of the jaw a, and loosely surrounds that portion of the pin c which projects through the jaw a and serves to shield said pin and aid in guiding it in its movements. To adjust the jaw a to the jaw a a screw 61 is tapped through a threaded opening in the jaw a just below the tube b, its unthreaded portion passing through an opening in the jaw a. To cause the jaw a to move in and out with the screw 01 two collars 0 0 are socured to the screw 01 one on each side of the jaw a as shown. A thumb piece eis formed on the upper outer end of screw (1 by means of which it may be conveniently operated.

The operation is as follows-The shear blade, shown at F, is clamped between the jaws a a, and said jaws are then adjusted,

by means of the extension b and its perforations, to secure the required bevel on the shear blade. An oil-stone is then placed in convenient position for the shear-blade to bear on, as shown at B, and the device reciprocated, the bifurcated portion E of the arm E sliding back and forth on the track O, the pins 0 limiting the movement of said arm. The clamping device also may be moved from side to side in order to sharpen the entire blade, the bifurcated lower end E of arm E bearing on track 0 and forming a pivot therefor.

When it is desired to pack the device away it is simply necessary to remove the arm E from track 0, remove pin K and turn the clamping jaws into the desired position to fit within the box and then remove the bracket D from the lugs A( of the stationary bracket A.

As will be readily understood the device may be varied in form without departing from the scope of the invention, and I desire it understood that I do not limit myself to the exact form shown and described.

Having thus fully described my invention, what I claim is- 1. A device for sharpening shears consisting of a track, an arm slidably mounted on said track, an adjustable clamping jaw pivoted on said arm, an adjustable clamping jaw carried by the pivoted-jaw, a guide pin carried by this clamping-jaw said pin passing through an opening in the pivoted jaw, and

a screw rotatably mounted in the adjustable jaw and tapped through the pivoted jaw, substantially as described;

2. A device for sharpening shears consisting of a horizontal track, an arm E formed at one of its ends with the bifurcated end E adapted to embrace the track and slide thereon and at its other end with a plate G, a pivoted clamping-jaw mounted on said plate, means for adjusting said pivoted jaw to various angles and for looking it in its adjusted posi- 7 tion, and an adjustable clamping-jaw carried by the pivoted jaw, and means for ad usting this latter clamping jaw, substantially as described.

3. A device for sharpening shears consisting of a horizontal removable track provided with stop pins at its ends, an arm E formed with the end E and the enlarged parallel plates G, said arm being mounted to slide on the track and to be removable therefrom, a jaw a; pivoted between the formed with the extension I? which is formed with a series of perforations which register with a series of perforations in the plates G, a removable pin adapted to be passed through plates G and V these perforations, an adjustable clamping jaw carried by the pivoted jaw, a guide pin carried by the adjustable jaw, said pin passing through a perforation in the-pivoted jaw, a tube formed on the pivoted jaw and extending rearwardly and adapted to receive the guide pin, and a screw rotatably mounted in the adjustable jaw and tapped through the pivoted jaw, substantially as described and for the purpose set forth.

In testimonywhereof I aifix my signature in presence of two witnesses.

CHARLES N. SLY. Witnesses:

STANLEY E. FILKINS, HARRY F. IVES.

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