US663992A - Saw-filing machine. - Google Patents

Description

No. 663,992.' Patented nec. la, |900. s. w. auTmnsE.

SAW FILING MACHINE.

J (Application Bled Jan. 24, 1900.) (No Modeh) Wilxycsscb v mwwmghjeglorf l Jlllorljcys.

UNITED STATES vPATENT OFFICE.

SAMUEL WILLIAM GUTRIDGE, OF GRANITE, OREGON;

SPECIFICATION forming part of Letters Patent No. 663,992, dated December 18, 1900.V

Y Application led Januaryv 24, 1900. Serial No. 2,656. (No model.)

To a/ZZ whom t may concer-n.- .K

Be it known that I, SAMUEL WILLIAM GUT- RIDGE, a citizen of the United States, residing at Granite, in the county of Grant and State of Oregon, have invented a new and useful Saw- Filing Machine, of which the following is a specification. f

This invention relates to saw-filing machines, and more particularly to that class adapted for filing straight-edged saws by handpower, although it may be otherwise operated, if desired; and the object of the invention is to provide a simple, compact, and efficient construction through the medium of which the teeth of the saw may be filed at any desired angle and the progression of theY vfile longitudinally of the saw may be varied and may be easily effected.

In the drawings forming a portion of this specification, and in which lsimilar numerals of reference designate like and corresponding parts in the several views, Figure l is al rear perspective View showing a filing-machine constructed in accordance with the present invention. Fig. 2 is an end view of the filing-machine and showing the ratchet- Wheel and its operating mechanism for feeding the iile' in either direction. Fig. 3 is a vertical section taken through therear-portion of the machine and including the file-adjusting ratchet and the coperating parts. Fig. 4 is a detail perspective View showing one of the uprights in which the feed-screw is journaled. Fig. 5 is a detail perspective view of the adjustable feed-stop. y

Referring now tothe drawings, the present invention comprises a saw-clamp including a fixed member 2, which constitutesthe supporting frame or base for the machine, and a removable member 3, which is adapted for adjustment toward and away from the plane of the stationary member by means of bolts 4 to provide for clamping a saw-blade 5in operative position therebetween.- Erected at opposite ends of the supporting-frame are standards 6 and 7, of which the latter is substantially arc-shaped and has a concentric bearing which cooperates with al bearing in the standard 6 to receive a feed-,screw 8, which is thus disposed above and parallel with the clamp and is preferably rotated in the vertical plane of the seat for the recep- V tion of the saw-blade formed between the clamp members. A hub 10 is formed upon the standard 7, concentric therewith, and pro- Ajects at opposite sides thereof longitudinally of the shaft 8, which it encircles. The shaft 8 is continued beyond the hub lO, and upon this continued portion is fixed a ratchet- Wheel 11, which may be held in place by va clamp-nut 12 or in any other Well-known manner, and this ratchet-wheel is adapted for rotation to rotate the feed-screw.

In order to rotate the ratchet-Wheel l1, a lever 13 is journaled at its inner end upon the hub 10 between the wheel l1 and the adjacent face of the standard 7, and this lever is continued beyond the periphery of the wheel 11, at which point it is broadened, as shown at 14, to form av shoulder which lies in the plane 'of the wheel and extends beyond the outer face thereof. A spring-plate 14' is secured to this broadened o`r extended portion of the lever 13 and extends inwardly in the direction of the center of the wheel l1 to lie parallel With the lever 13, this spring being eX- tended beyond the periphery of the wheel 11, as illustrated in Fig. In order to operatively engage the lever 13 with the wheel 1,1, a double-faced pawl 15, in the form of a rocker, of arc shape, is pivoted upon a pin 16, passed through the spring-14 and the adjacent portion of the lever 13 and in a position to be rocked to engage its ends alternately with the teeth ofthe ratchet-Wheel. `A lug 17 is formed ,upon thev convened upper face of the pawl15 and extends at right angles to the chord of the arc of the pawl, and this lug 17 is adapted for engagement by a spring plate or finger 18 alternately on opposite sides to hold the ends of the rocker alternately in yieldable engagement with the teeth of the ratchet-Wheel. permit adjustment of the spring-finger 18 from one .side to the otherof the lug 17, said finger is mounted slidably in a longitudinal slot in the laterally extended or thickened portion of the lever 13, the outer end of the finger being bentto form a finger-piece by means of which it maybe convenientlyadjusted. Thus if the finger 18 be drawn outwardly the pawl 15 may be rocked to the desired position and the finger may then be returned to engage the lug 17 and hold it yieldably in operative position. To hold the ratchet-Wheel 11 against IOO the return movement of the lever 13 in either direction, a spring-pawl 2O is pivotally mounted upon a projection 21 of thesaw-clamp, and which pawl is adapted for movement upon its pivot to project alternately inopposite directions and operatively engage the ratchetwheel.

A stop 22 is formed upon the outer face of the standard 7 to limit the movement of the lever 13 in one direction, and in order to limit the movement of the lever in the opposite direction to diierent degrees under different circumstances an adjustable stop is provided comprising an arm 24, one end of which is rotatably mounted upon the hub 10 at the inn ner side of the standard 7, while the other end of the arm extends outwardly and radially of the standard 7 and is then bent inwardly over the outer edge of the latter into the path of movement of the lever, and in order to hold this arm in different positions in its rotatable adjustment a thumb-screw 25 is engaged with a threaded perforation therein and is adapted to impinge the inner face of the standard 7 at a point opposite to the rearwardly-bent end of the arm to draw said end against the standard to hold it firmly in place. Thus by loosening the screw 25 the arm 24 may be adjusted and the throw of the lever correspondingly regulated.

Mounted upon .parallel guides 32, formed by flanges on the saw-clamp, is a carriage 33, havingr depending legs forming slides to traverse said guide-fianges and also carrying a feed-nut which is engaged by the feed-screw to provide for the communication ot' motion from the feed-screw to the carriage to advance the latter in a direction parallel with the Saw-blade. Also mounted upon the carriage, of which the body portion is preterably parallel withthe upper surface of the support or saw-clamp, is a tile-holder guide consisting of upper and lower members 35 and 36, provided with central coaxial pivots mounted in suitable bearings in the upper and lower sides of said body portion of the carriage and having extensions or ears 38,con nected by adjusting devices, such as screws 39, to provide for causing such frictional contact of said guide members with the upper and lower surfaces of the body portion of the carriage as tov secure the guide at anydesired angular adjustment with relation to the vertical plane of thefeed-screw or the path of the carriage when actuated by the feed-screw. These guide members are provided in their remote ot' outer sides with guide- channels 40 and 41, into which are fitted the parallel upper and lower arms of a tile-holder 42, suitably provided at one end with a grip 43 and at the other end with a chuck-support 4 4. This chuck-support consists of parallel arms arranged, respectively, in contact with the opposite sides of the file-holder arms and provided with set-screws 45, by means of which it may be secured at any desired angular adjustmentupon said holder-arms. Also mounted in suitable bearings at the lower end olf the chuclvholder is a chuck for thcreccptiou of one end of a file 47, the opposite end of the le being fitted in a corresponding seat adjacent to the grip. The chuck may be secured at any desired angle of adjustment by means of a set-screw 49.

It will be understood that when the file is arranged in place and the saw secured in the clamp the tile-holder may he reciprocated manually to cause the tile to traverse the faces of the saw-teeth, and the angular adj ustment ot' the file-holderguide provides for securing a unit'orm bevel of the saw-teeth.

ln practice after a saw has been rmly clamped in place the file-carriage is adjusted upon the feed-screw to the proper position and the tile is adjusted to properly engage a sawtooth. The lever is then operated to move the tile through the medium of the feedscrew to the proper position for engagement with the next tooth, when the arm 24 is adjusted to engage or lie against the lever. This will determine the position of the stoparm to secure an even and regular feed of the file-carriage, so that the teeth after being sharpened will be regular and even. When one tooth has been sun'iciently filed, the lever may be operated to feed the file-carriage to the next tooth, and the operation may be continued until the tiling operation is completed. When it is desired to feed the carriage in the opposite direction, it is only necessary to reverse the positions of the pawls 15 and 20, when the lever 13 may be moved, with the desired result.

It will of course be understood that the present invention may be applied to a sharpener for feeding any style ot' saw and that the specific structure and arrangement shown may be varied without departing from the spirit of the invention.

The tile-carriage herein shown is the same as that specifically described in the patent granted to me July 11, 1889, No. 628,625, and therefore does not require more specific description or showing.

What is claimed is- 1. A saw-tiling machine comprising a sawclamp having standards connected therewith, a feed-screw journaled in the standards and having a ratchet-wheel fixed thereto, a lever pivoted between the ratchet-wheel and the adjacent standard and having a reversible pawl for engagement with the ratchet to operate it, an arm mounted upon the standard concentric with the shaft and at t-he opposite side of the standard from the lever, said arm being bent around the edge ofthe standard to lie in the path ot movement of the lever, and a set-screw carried by the arm and adapted for engagement with the standard to hold the arm in dierent positions.

2. A saw-filing machine comprising a sawclamp having standards connected therewith, a feed-screw journaled in the standard and having a ratchet-wheel Xed thereto, a hub ICO IIO

upon one of the standards and extending at opposite sides thereof,a lever pivotal] y mounted upon the hub between the standard and the ratchet, said lever having a laterally-extending portion lying above the ratchet, a plate connected with said extending portion, a pawl pivoted between the plate and the lef ver, a slot in the extending portion of the lever, a spring-plate passed through the slot and into operative engagement with the pawl, said plate being adapted for adjustment to lie upon opposite sides of the pawl to hold its ends alternately in operative engagement with the ratchet, an arm mounted upon the hub at the opposite side of the standard, said arm being bent around the edge of the standard to lie in the path of movement of the lever, and a set-screw carried by the arm and adapted for engagement with the standard to hold the arm in different positions.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence of two witnesses.

SAMUEL WILLIAM GUTRIDGE.

Witnesses:

W. L. BROWN, P. J. BANNON.

Images