US422743A - Grindstone tool-holder - Google Patents

Description

(No Model.)

A. H.ODIGK. GRINDSTONE TOOL HOLDER No. 422,743. Patented Mar. 4, 1890.

/N Tof? i 44% W/TNESSES:

UNITED STATES PATENT OFFICE.

ALEXANDER II. DICK, OF CRAMERS HILL, NEW JERSEY.

GRINDSTCNE TOOL-HOLDER.

SPECIFICATION forming part of Letters Patent No. 422,743, dated March 4, 1890.

Application filed November 2S, 1889.` Serial No. 331,352. (No model.)

To all whom, it may concern:

Be it known that I, ALEXANDER 1-1. DICK, of Cralners Hill, in. the county of Camden and State of New J ersey,haveinvented a new and Improved Grindstone Tool-Holder, of which lie following' is a full, clear, and exact descrip- Ion.

The invention relates to grindstone toolholders such as shown and described in the United States Letters Patent No. 411,217, granted to me September 17, 1889.

The object of the present invention is to provide a new and improved grindstone toolholder which is simple and durable in construction, permits of grinding any desired bevel on the tool, and allows of moving the tool transversely across the-periphery of the stone, so that the former can be ground conveniently.

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

Reference is to be had to the accompanying drawlngs, forming a part of this specification, 1n which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 is a side elevation of the improveT ment as applied and with parts in section. Fig. 2 is a plan view of the same. Fig. 3 is a transverse section of part of the improvement on the'line so :tof Fig. 1. Figt is a sectional p lan View of part of the improvement on the line y y of Fig. l, and Fig. 5 is an end elevation of the tool-clamp.

.The improved tool-holder A. is provided with a bed-plate B, secured by screws, nails, or other means on one end of Ithe grindstoneframe C, supporting in the usual manner the grlndstone D. The bedplate B is provided In Its outer end with a slot E, and it supports the post F, provided with a downwardly-extending screw-rod Gf, lpassing through said slot E, and on which screws a nut G', screw- Ing against the under side of the bed-plate B, to clamp the post F in any desired position 011 the outer end of theV bed-plate B. The post E is provided with the upwardlyextending pin' F on which is mounted to turn a sleeve Il, adapted to be secured in any desired position on the said pin F by a eetn screw H. The upper end of the sleeve, Il is preferably connected with a second sleeve I, in which is iitted to turn a pin J of an arm J, supporting on its front end a tool-clamp K, for holding the tool-blade L in place and to the grindstone D. The pin J of the larm J can be secured in place in the sleeve I by means of a set-screw I, screwing in the said sleeve.

The clamp K is provided with two clamping-arms K and K2, each provided on its outer end With a downwardlyextending flange K3, between which iianges the toolblade L is placed, the back of the tool-blade resting against the under side of the transversely-extending bar J 3, formed on the arm J and carrying the clamping-arms K and K2. Each of the latter is provided with a trans-l versely-extending slot, through which passes the bolt K4, for clamping the clamping-arms K and K2 in position on the bar J 3 after the tool-blade L is placed between the iianges K3 of the said arms. Each of the arms K and wardly-extending lug K5, engaging a correspondingly-shaped groove at the rear of the transversely-extending bar J3, so as to hold the said clamping-arms K and K2 in place on the bar. I

The handle end of the tool-blade L is supported on a support N, provided on its upper end with lugs O, forming a fork, through Which passes a bar P, provided on its top with a series of notches P and secured to the under side of the arm J. The notches P are adapted to be engaged by a transverselyextending pin O', secured to the lugs 0 of' the said support N. By lifting the latter it can be moved forward or backward. on the said bar P and dropped with its pin O` in any one of the notches P in the said bar,'according to the length of the tool held by the clamp K. The support N is provided in its front with a transversely-extending notch N', adapted to receive the back end. of the tool-blade, and is also provided with a spherical recess N2, adapted to receive the handle end of the tool, if the latter is provided with a handle.

On the free end of the arm J is held a transversely-extendin g handle J 2, for conveniently moving the arm J up or down or sidewise when grinding the tool-blade.

,The device is used as follows: The support IOO N is adj usted on the notched bar P according to the length of the tool to be ground. The blade L of the tool is clamped between the flanges K3 of the clamping-arms K and K2, and rests with its back end either in the notch N or the recess N2 of the support N. The cutting-edge of the tool L isthen brought in contact with the periphery of the grindstone D, the operator taking hold of the handle J 2 of the pivoted arm J, and pressing the same downward with more or less force t hold the tool with more or less force in contact With the grindstone D, which is rotated in the usual manner. IVhen the set-screwr H is loosened, the operator can conveniently vmove the arm J sidewise, so that the tool is moved crosswise on the periphery of the grindstone D, saidu.. the pivotal connection between the sleeves I and II permitting said movement. By loosening the set-screw I the arm J may be turned in the sleeveI so that the tool-blade L Will be held at an angle to the grindstone D for grinding an angular edge. ItV will thus be seen that bythe connection ot' the pivoted arm J with the post F the arm J is made universal in its movement-that is, it can be moved up or down or sidewise, as desired.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. In a grindstone tool-holder, the combination, With an arm carrying a tool-clamp at its end, of a support adj ustably mounted on the said arm and constructed to receive and support the end of the tool carried by the clamp, substantially as described.

2. In a grindstone tool-holder, the combil nation, with the arm J, provided with the notched bar P and carrying a tool-clampat its'end, of the support N, provided With the lugs O, the pin O, secured to the lugs, the notch N', and a recess N2, substantially as herein shown and described.

3. In a grindstone tool-holder, the combination, With a bed-plate and a post secured thereto, of an arm connected to the post by a universal joint, a tool-clamp on the end of the arm, and a support adjustably mountedl the notched bar P, the tool-clamp K, secured to the transversevbar .J3 of varm J, and "the su pport N on the notched bar P, substantially as herein shown and described.

5. In a grindstone tool-holder, the combi. nation, with a bed-,plate and a post adj ustably secured thereto, of a sleeve adj ustably mounted on the post, a second sleeve pivoted to the first-named sleeve, anarm adjustably secured in the second sleeve, a tool-clamp ou the end of the arm, and asupportfor the end of the tool adj ustably mounted on said arm, substantially as herein shown and described.

6. In a grindstone tool-holder, the combination, with the arm J, provided Withthe transversely-extending bar J 3, of the clamping-arms K K2, each' provided on its outer end with the downwardly-extending.{iange K3 and With the downwardly-extending lug K5 on its rear end, and the bolt. K-, substantially as herein shown and described.

ALEXANDER H. DICK.; NVitnesses:

JOHN C. ZANE, BENJ. MUNsoN.

ssA

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