US316570A - richardson - Google Patents

Description

(No Model.) 3 Sheets-Sheet 1.

J, RICHARDSON. MACHINE FOR GUMMING AND SHARPENING SAWS. No. 316,570. Patented Apr. 28, 1885.

N. PETERS. Phmmlilhugraphun Washmglnn. I c.

(No Model.) 3 Sheets-Sheet z.

r J. RICHARDSON.

MACHINE FOR GUMMING AND SHARPBNING SAWS. No. 316,570. Patented Apr. 28, 1885.

(No Model.) 3 Sheets-Sheet 3.

J. RICHARDSON.

MAGHINE FOR GUMMING AND SHARPBNING SAWS.

No. 316,570. Patented Apr. 28, 1885..

N, FEYERS. PholoLdhographar, Washmglblu n. c.

irnn rarns ATFNI rricn.

JOHN RICHARDSON, OF SAN FRANCISCO, CALIFORNIA.

MACHINE FOR GUMMING AND SHARPENING SAWS.

SPECIFICATION forming part of Letters Patent No. 316,570, dated April 28, 1885.

Application filed March 2-2, 1884. (No model.)

To all whom it may concern.-

Be it known that I, J OHN RICHARDSON, of the city and county of San Francisco, and State of California, have invented an Improvement in Machines for Gumming and Sharpening Saws; and I hereby declare the following to be a full, clear, and exact description thereof.

My invention relates to the class of machines used for gumming and sharpening saws in which an emery or file wheel adapted to be moved by the various adjustments of the machine to whatever position is desired is employed to do the grinding or filing.

My invention consists in a machine in which certain adjustments can be made the object or result of which is to throw the wheel to whatever position may be required in the best possible manner, and also to various construe tions by which these adjustments are made and the wheel driven. The main adjustment to approach the wheel to the saw is given to the frame of the machine, which is adapted to be moved to any inclination on either side of a vertical line. The further adjustment of this nature, and also to throw the wheel itself to whatever angle is necessary to conform it to the edges of the teeth, is given to a cross head or bar sliding on'and pivoted to the frame, whereby it may be drawn back and forth and turned to any inclination on either side of a horizontal. A further adjustment back and forth is given to the wheel-shaft directly to fit the wheel accurately to the tooth, and a certain arrangement of pulleys and belts is made in connection with the machine which will permit these adjustments, and yet continue to exercise their function in driving the wheel, all of which I shall hereinafter fully explain.

Referring to the accompanying drawings, Figure l is a rear elevation of my machine. Fig. 2 is a front elevation of same. a side elevation of same. Fig. l is a plan of same. Fig. 5 is a view of the handle X. Fig. 6 is a longitudinal section showing shaft H in the upper part of the frame and the devices mounted upon it. Fig. 7 is a detail side View showing the changes of the belts to adapt the speed to the emery or the file Wheel. Fig. '8 is a section showing the shifting-pulley F at the bottom.

A are two standard-bearings, from one of which an arm, B, extends upwardly and car- Fig. 3 is ries a guide-arc, 6, upon its top, as shown in Fig. 3.

O is the frame of the machine, preferably of the shape shown in Figs. 1, 2, and having a handle-arm, c, and a short arm, 0. The legs of this frame are secured by means of screws d to a shaft, D, mounted in the tops of bearings A, and adapted to turn therein to change the inclination of the frame from a vertical to any desired angle toward a horizontal. Upon this shaft is loosely mounted a pulley, E, and a long pulley, E, of equal diameter to pulley E. Upon this pulley E is a shifting-pulley, F, having a large diameter. This is secured to its place by a set-screw, c, Fig. 8, and may be shifted on the pulley E, as shown by the dotted lines. The object of this construction I shall fully explain hereinafter.

G, Fig. 7, is the driving-belt, extending from the pulleys G G2 on the driving-shaft. The larger of these pulleys is equal in diameter to the pulley F and the smaller to the pulley E,- so that the belt may be shifted as hereinafter described.

The movement of the frame 0 is guided on the are b by means of a lip, a, secured to the frame and lapping over the arc. A set-screw, a, through this lip fixes theframe wherever desired.

The frame, with its mechanism, which I shall describe, being rather heavy, I have a counterweight attachment to assistits movement and relieve the screw to to a great extent.

W is a weight having an arm, w, secured by a screw, w, to the shaft D, to which the legs of the frame are secured. By adjusting the inclination of the arm the weight is made to exercise its function to the best advantage.

Mounted and fixed by a screw, 0, Fig. 6, in the arms 0 c of the frame, is a shaft, H, on one end of which is pivoted orjournaled a grooved guide, I, in which is fitted the cross bar or head, .I, Figs. 3, 4, consisting of a T- shaped piece in cross-section, as shownin Figs. 1, 2. The cross-head is adapted to slide back and forth in the grooved guide, and is fixed at any desired point by means of set screws 7', Fig. 3.

In order to nicely adjust and maintain the cross-head at any desired angle with the frame, I have the bar K, having a cross-base, k, with ends bent on each side of the handle-arm of the frame and set by means of screws 70. 4 The upper end of this bar has a socket by meansof which it is fitted over the hub of the grooved guide, and is secured thereto by a set-screw, k Fig. 6. By loosening this screw the guide and its cross-head may be turned to any desired angle and again set, while by the use of the screws it below this adjustment may be rendered extremely fine when necessary.

The shaft H has loosely mounted upon it a double-faced pulley, F, the smaller face of which receives a belt, F from the large pulley F or the small pulley E, as the case may be.

One end of the cross-head J is flattened out and widened, its lower portion being made cylindrical, to serve as a boxing for the shaft L, carrying the emery or file wheel M.

Within the boxing, and on the shaft L, is a sleeve, N, the outer end of which carries a pulley, O. This sleeve is confined in its bearing, and is secured to the shaft L by means of a screw, n, which passes into a slot, Z, .Fig. 3, made in the shaft. This has the effect of feathering the sleeve and pulley on the shaft, making the two turn together, and at the same time allowing the shaft to be projected or withdrawn without changing the position of the sleeve and pulley. This movement is accom-' plished by means of the following devices, as shown in Fig. 4.

Extending from the cross-head is an arm, a, through which a screw, P, provided with a hand-wheel, 9, passes.

Upon the end of the shaft L is an arm, Q. The shaft is'journaled in one end of this arm,- which is held upon it by collars Z. In the other end of the arm is formed a nut, q, through which the adjusting-screw P passes. Upon this screw and on each side of the nut q are stop-nuts g, which are used when desired to accurately determine the limit'of motion or adjustment.

Bolted to the end of the cross-head J' is a U- shaped piece, B, Fig. 2, to the arms of which are journaled the pulleys S, Figs. 2, 4.

I T is an endless belt or band, by which power is transmitted to the emery or file wheel. The

course of this belt is from the larger face of pulley F to one of the pulleys S, around which it passes to pulley O on the shaft L, thence back over-the other pulley S to the pulley F agaln.

Attached to the end of cross-head J is a handle, X, by which the said cross-head may be readily handled, and a counter-weight, Y, is upon its other end to assist the movement.

The operation of the machine is as follows: The saw is to be secured to a suitable support in position for the machine to reach it, as

shown in Fig. 3. The inclination of the'entire frame, as shown by the dotted lines in Fig. 3, throws the emery or file wheel close to the saw, and the inclination or adjustment of the cross-head then throws the wheel at the proper angle for the inside edge of the tooth, and the operation of the screw P causes the wheel to come in contact with the tooth. By

carried over the tooth by the adjustment of the frame, lowers the wheel to the throat, which is ground out by its rim, theother portion or edges of the tooth being ground by its sides.

In all these adjustments the power continues to be transmitted, as the pulleys and belts are so arranged as not to be affected.

The adjustment of the frame is accomplished by loosening the set-screw a, and moving said frame by the handle 0, and again tightening up the screw.

Theline-adj ustment of the cross-head is done by loosening the screws j and slipping it back or forth in the grooved guide I. Its adjustment to an angle is effected by loosening the screw k and allowing the guide I to'turn, and its adjustment may be nicely made by means of the screws k. wheel is made by the screw P. These various movements, either single or combined, enable me to throw the emery or file wheel to any desired position to grind or file the tooth.

I have provided in this machine for the employment of a file-wheel or an emery-wheel, as may be desired. This is the object'of the arrangement of pulleys at the base of the machine, the object being to acquire great speed for the emery-wheel and a much less degree of speed for the file-wheel.

The pulley E is simply to throw the machine out of gear when desired.

In Fig. 2 the belt F is shown as extending from the large pulley F to the pulley above, while the driving-belt G extends from the large pulley G, Fig. 7, to the exposed portion of small pulley E, Fig. 3, on which the pulley F is keyed. This arrangement gears the machine upto a high speed for using the emerywheel; but for the file the belt F is removed entirely, thepulley Fis shifted to oneside,and-

a shorter belt is extended from the smaller The line-adjustment of the ICC IIO

pulley E below to the pulley above, and the 1. In a machine for gumming and sharpen.

ing saws, the frame 0, pivoted at its base and adapted to be turned to an inclination on either side of a vertical line, and the grooved guide I, pivoted in the top of said frame and adapted to be turned to an inclination on either side of a horizontal line, in combination with the cross-head J, fitted in the grooved guide and adapted to be adjusted forward or back, the emery or file wheel M, mounted on the shaft L, and a mechanism for transmitting power to said wheel, substantially as herein described.

2. In a machine for gumming and sharpening saws, the pivoted frame 0, in combination with the cross-head J ,fitted in a supportingguide,the shaft L, mounted on said cross-head, and the emery or file wheel M, mounted on said shaft, means for adjusting said shaft back and forth, and mechanism for rotating the wheel, substantially as herein described.

3. In a machine for gumming and sharpening saws, the pivoted frameC and the grooved guide I, pivoted in the top of said frame and adapted to be adjusted as described, in combination with the cross-head J, fitted in the guide and adapted to be adjusted with said guide, and also forward or back, the shaft L, mounted in the cross-head, and emery or file wheel M, mounted on said shaft, means for ad- 2 5 justing said shaft back and forth, and mechanism for rotating the wheel, substantially as herein described.

4. In a machine for gumming and sharpening saws, the frame 0, carrying the grinding mechanism,and the rocking shaft D, by which its base is pivoted, in combination with the weight WV, weighted arm w, set on said shaft, and a set-screw, 10, whereby the movement of the frame is rendered easy, substantially as described.

5. In a machine for gumming and sharpening saws, the frame 0, pivoted at the base, the shaft H, fixed in the top of the frame, and grooved guide I, pivoted or journaled on said shaft, in combination with the cross-head J, fitted and adapted to be adjusted in said guide, the shaft L,carrying the emery'or file wheel M, and a connection between the guide I and frame 0 to hold the former at the place to which it is turned when adjusting the inclination of the cross-head, substantially as herein described.

6. In a machine for gumming and sharpening saws, the frame 0, pivoted at its base, the shaft H, fixed in the top of said frame, and the grooved guide I, pivoted on said shaft, in combination with the cross-head J, fitted and adapted to be adjusted in said guide, the shaft L, carrying the emery or file wheel M, and the bar K, having a cross-base, 7s, embracing and set to the frame by adjusting-screws 7c, and having its upper end set on the hub of guide I by a screw, is, substantially as and for the purpose herein described.

7. In a machine for gumming and sharpening saws, the frame G, the base of which is fixed on a shaft, D, mounted in bearings A, the shaft H, fixed in the top of the frame, and cross-head J, secured by means of a guide to said shaft, the shaft L, carrying the emery or formed on said cross-head and parallel therewith, the emery or file wheelM on the end of the shaft, suitable mechanism for rotating said shaft, and the means for adj ustingit back and forth, consisting of the arm'Q, in one end of which said shaft is journaled and confined, and the adjusting-screw P, passing through arm in and through a nut, q, in the end of arm Q, substantially as herein described.

9. In a machine for gumming and sharpening saws, the pivoted frame 0, shaft H in its top and having the grooved guide I, in combination with the cross-head J, the shaft L, mounted in its end, the emery or file wheel M on said shaft, and means for adjusting said shaft and wheel back and forth, as described, and the means for transmitting power to said wheel, consisting of the pulley F, loose on shaft H, and to which power is transmitted in suitable manner, the pulleys S on the end of the cross-head, the pulley O, feathered on shaft L by means of sleeve N and screw it and slot Z, and the belt or band T, all arranged and operating substantially as herein described.

10. In a machine for gumming and sharpening saws, the frame 0, having handle-arm c and arm 0, the shaft D, by means of which said frameis pivoted to adapt it to have an inclination on either side of a vertical line, the means for fixing said frame where adjusted, the shaft H, fixed in arms 0 c, and having the grooved guide I, pivoted upon it, in combination with the cross-head J, fitted and set by screws in said guide, and adapted to' have an adjustment therein back and forth and an adjustment therewith to an inclination on either side of a. horizontal, the bar K, set to the frame and to the guide by suitable screws, whereby the latter adjustment of the cross head is regulated and limited, the shaft L in said cross-head, and emery or file wheel M on the sh aft, the screw I, suitably connected with crosshead and shaft L forgiving the latter an adjustment back and forth, and suitable pulleys on shafts D H L and cross-head J, and belts for transmitting power to rotate the wheel M, substantially as herein described.

In witness whereof I have hereunto set my hand.

JOHN RICHARDSON.

Witnesses:

O. D. GoLE, J. H. BLOOD, 7

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