US415926A

US415926A - Tool-holder

Info

Publication number: US415926A
Authority: US
Publication date: 1889-11-26
Anticipated expiration: 1906-11-26

Description

(No Model.)

H. SOHONGKE.

TOOL HOLDER.

No. 415,926. Patented Nov. 26, 1889.

WITNESSES: @MMQP.

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UNFITED STATES PATENT OFFICE.

HENRY SOHONGKE, OF QOEANUS, NElY YORK.

TOOL-HOLDER.

SPECIFICATION forming part of Letters Patent No. 415,926, dated November 26, 1889.

Application filed January 22, 1889. Serial No. 297,145. (No model.)

To 0055 whom it may concern.-

Be it known that I, HENRY SoHoNoKE, of Oceanus, in the county of Queens and State of New York, have invented a new and Improved Tool-Holder, of which the followingis a full, clear, and exact description.

The object of the invention is to provide a new and improved tool-holder specially designed for holding the tool in the proper position while grinding it on the grinding-wheel.

The invention consists of certain parts and details and combinations of the same, as will be fully described hereinafter, and then pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 is a side elevation of the improvement. Fig. 2 is an end elevation of the same with parts broken out, and Fig. 3 is a plan view of the same.

On the frame A, which supports the grinding-wheel B in the usual manner, are secured the standards 0 0, connected with each other at their upper ends by a transverse bar D. A screw-rod E also connects the said standards 0 with each other, and is held in place by nuts or other suitable means. 011 the screwrod E screw the sets of nuts F and F, and between the nuts F F is held one end of an arm G, fitted loosely on the screw-rod E. F F serve to hold the arm G in any desired position on the rod E by screwing the nuts up against the sides of the arm when the latter is in its proper place. Between the nuts F is held a similar arm G, and both arms G and G extend toward the grinding-wheel, and are each provided at the front end with slightlyinclined jaws G each having on its inside a longitudinally-extendin g V-shaped groove G plainly shown in Fig. 2.

The tool 11, to be ground on the grindingwheel B, is placed with its blade in the grooves G of the jaws G held on the arms Gand G, as is plainly illustrated in the drawings. The handle end of the tool I'l extends rearward, while the sharp edge of the tool-blade passes onto the periphery of the grinding-wheel B, as shown in the drawings.

On the front ends of the arms G G presses the end of a spring I, secured at its inner end The nuts between the j am-nuts J, screwing on the screwrod E. The inner end of said spring I passes loosely around the screw-rod E, and when the nuts J are moved it can be moved to either side, according to the position of the arms G and G. In order to press on both arms at the same time, I provide the spring I at its free end with a transversely-extending branch I, of sufficient length to engage both arms G and G. The top of the spring I is engaged by the lower end of a screw K, screwing in the transverse bar D and serving to increase the tension of the spring I, so as to press the arms G and G downward with more or less force, thereby holding the tool H with more or less power against the grinding-wheel B.

A screw L passes loosely through the arm G, extends transversely, and screws into the other arm G. This screw L serves to hold the ends of the arms G and G in place-that is, to draw the same toward each other after the tool-blade 1-1 is inserted in the groove G to lock the blade in place on the jaws.

The device is" used as follows: In order to insert the blade of the tool H in the jaws G I unscrew the nuts F and F from the arms G and G, and then turn the screw L so as to move the arms G and G nearer to each other or farther from each other, according to the width of the tool-blade. hen the desired position is reached, the tool-blade is inserted in the grooves G in the jaws G after which the screw L is turned to move the jaws toward each other in order to lock the blade of the toolll in place 011 the jaws. The nuts F and F are then screwed up against the arms G and G, so that the latter are held in place on the screw-rod E. The operator then adjusts the screw-rod K so as to increase or decrease the tension of the spring I, which presses the arms G and G downward with more or less force, and consequently presses the edge to be sharpened with more or less force against the periphery of the grinding-wheel E.

It will be seen that the arms G and G can be moved transversely, so as to bring the toolblade over any desired part of the periphery of the grinding-wheel B. It willfurther be seen that the tool is held very accurately in place on the periphery of the grinding-wheel, so that the cutting-edge is evenly ground.

Having thus fully described my invention,

I claim as new and desire to secure by Letters Patent 1. A tool-holder comprising standards, forwardlyprojecting tool -holding arms, a T- shaped spring the transverse arms of which bear upon said arms, a cross-piece connecting the standards above the spring, and a setscrew projecting through said cross-piece against the upper side of the spring, substantially as set forth. I

2. A tool-holder comprising standards connected with each other, a screw-rod held on the said standards, sets of nuts on the said screw-rod, arms pivoted on the said screw-rod and adapted to be locked in place by the said sets of nuts, jaws formed 011 the free ends of the said pivoted arms and provided with V- shaped grooves for receiving the tool-blade, a

HENRY SCI-IONOKE. Vitnesses:

THOMAS H. BOND, GEORGE BENNETT.