US553010A - Device for holding tools while being ground or sharpened - Google Patents

Description

(No Model.)

. J. MOWRER. DEVIGE FOR HOLDING TOOLS WHILE BEING GROUND 0R SHARPENED. No; 553,010. Patented Jan. 14, 1896.

@QM/W ali fjy UNITED STATES PATENT JAMES MOVRER, OF CASPER, WYOMING.

DEVlCE FOR HOLDING TOOLS WHILE BEING GROUND OR SHARPENED.

SPECIEICATION forming part of Letters Patent No. 553,010, dated January 14, 1896.

Application filed June 2&1895. Serial No. 553,720. (No model.)

To all IUD/0121, it may concern:

Be it known that I, J Axons Mownnja, a citi zen of the United States, residing at Casper, in the county of Natrona and State of Vyoming, have invented certain new and useful Improvements in Devices for Holding Tools lVhile They are Being Ground or Sharpened; and I do declare the following to be a full,clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

M y invention relates to improvements in those devices which are provided with clamps for engaging tools and are designed for holding the tools while they are being ground or sharpened; and it consists in the peculiar construction, novel combination and adaptation of parts hereinafter described, and particularly pointed out in the claim appended.

In the accompanying drawings, Figure l is an elevation, partly in section, illustrating my improved device in conjunction with a grindstone and a chisel or planebit to be sharpened. Fig. 2 is a perspective view of the upright of the device, and 1 i g. 3 is a similar view of the tool-holder.

Referring by letter to the said drawings, A indicates a grindstone of the usual construction, which is mounted in a suitable frame, as a, and B indicates the upright of my im proved device. This upright is connected at its lower end to a base 0 designed to be arranged on the frame of a grindstone, as shown in Fig, l, and it is provided at intervals in its length with apertures Z2, designed to receive the end of the tool-holder D, said plurality of apertures being provided in order to permit the tool-holder to be arranged at various distances above the base C to suit grindstones of various diameters and bevel of tool.

The tool-holder D, as better shown in Fig. of the drawings, comprises the body c,which is provided with the reduced portion d, having its end shaped to enter the apertures of the upright B, the inclined rest 6 for the tool to be sharpened, and the loop portion f, which is of a width to receive the blade of a tool for a portion of its length and is reduced in width the remainder of its length so as to form a convenient hand-grasp g, and the clamp 72, which is designed and adapted to bear upon and hold the blade of the tool upon the rest of the body portion 0. This clamp h is pivotally connected at an intermediate point of its length to a transverse bar 1', extending across the loop f, and it is provided on its under side with a sprin g-platej, which is fixedly connected to it at one end, preferably ata point below the bar '1', and is designed to be engaged at its opposite end bya binding-screw In, which extends through a threaded aperture Z in the clamp h, as better shown in Fig. 1. By reason of this construction it will be seen that when the blade of atool is extended through the loop f of the holder D and interposed between the clamp h and its spring-plate and the inclined rest 6, and the screw k is turned so as to bind the spring again st the blade, the said blade will be engaged by the clamp in advance and in rear of the fulcrum-point thereof and will be securely held in position.

Vhile the blade of a tool will be securely held in the holder D, as just described, and will not be liable to casual movement or displacement, yet it may be readily released when desired by simply turning the screw 7r, so as to move it away from the tool, when said tool may be readily removed.

The spring-platej is fixedly connected to the clamp h at a point below the fulcrum thereof, and in addition to preventing the bindingscrew from indenting or otherwise marring a tool it serves to bind a tool against the rest e, and thereby hold it against casual movement before it is positively fixed in the holder by tightening the screw. By reason of this it will be seen that the operator may grasp the handle of the holder with one hand and may properly adjust the tool in the holder with respect to the grindstone with his other hand, and may then with such other hand tighten the screw on the tool, the spring j being adapted to prevent casual movement of the tool in the interval between the adjustment thereof and the tightening of the bindingscrew.

In the practice of the invention the blade of the tool to be sharpened is placed and secured in the holderD, as shown in Fig. l and as just described, and the end of the reduced portion (2- of the holder is placed in one of the apertures b of the upright 13, which is designed to serve as a fulcrum for the holder. When the blade of the tool is properly placed ICC) in the holder and the holder is placed in engagement with the upright 13, it is simply necessary for the operator to press clownwardly on the free end of the holder until the blade is properly sharpened, when the holder may be readily disengaged from the upright and the tool may be readily removed from the holder and another tool placed and secured in position, after which the operation above described may be repeated.

It will be seen from the foregoing that my improved device is very cheap and simple, that a tool may be readily placed and secured in position in it, and that with it a tool may be held and conveniently sharpened in a correct manner.

I have in some respects specifically de' scribed the construction and relative arrangement of the parts of my improved device in order to imparta full and clear understanding of the same; but I do not desire to be understood as confining myself to such construction and arrangement, as such changes or modifications may be made in practice as fairly fall within the scope of my invention.

Having described my invent-ion, what I claim is 4 The device described for holding tools while they are being ground comprising an upright and a holder adapted to be placed in engagement with the upright and having the loop f, adapted to receive the blade of a tool, the illclined rest 6, adapted to support the blade of the tool, the clamp h, fulcrumed at an intermediate point of its length above the inclined I rest and having a threaded aperture adjacent to its upper end, the spring platej, fixedly connected at one end to the under side of the clamp h, at a point below the fulcrum thereof and resting beneath the upper portion of said clamp and the binding screw 70, taking through a threaded aperture of the clamp and adapted to engage and press the spring plate against a tool, all substantially as specified.

In testimony whereof I affix my signature in presence of two witnesses.

JAMES MOXVRER. Witnesses:

J. E. DAVIS, CHAS. ONEALL.

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