(No Model.) 3. Sheets-Sheet 1. T. S. DIS STON, SETTING MACHINE, No. 453,040, - Patented May 26, 1891.

e

O

.

i

His

2 s Hill ". NIIIHEe: liter sil 2ees SN

7/2Zzesses: 77avervóor. 77 orcas 5.7zsszzzz)

(No Model.) 3 Sheets-Sheet 2. T. S. DIS STON, SAW SETTING MACHINE. No. 453,040, Patented May 26, 1891,

Waitresses; 77tzverzor. u-2 6 47.p- 77%orzas S. Z7css/art 7. (7/ fees /Zor (No. Model.) 3. Sheets-Sheet 3. T. S. DIS STON, SAW SETTING MACHINE, No. 453,040, Patented May 26, 1891.

77voverzioz' 77%.ozzas 45. Zosszarz/ % Acs is 6%

UNITED STATES PATENT OFFICE.

THOMAS S. DISSTON, OF PHILADELPHIA, PENNSYLVANIA. SAW-SETTING MACH NE. SPECIFICATION part of Letters Patent No. 453,040, dated May 26, 1891. Application filed January 19, 1891, Serial No. 378,296, (No model.) To all, Luhon, it invay concern: f, adapted to engage with the teeth of the SaW Be it known that I, THOMAS S. DISSTON, a and cleated to the machine, and is adjustable citizen of the United States, and a resident on its shaft by means of the -screw f", of Philadelphia, Pennsylvania, have invented so that any portion thereof may be bPOught 55 Certain. Improvements in Saw - Setting Ma into the same vertical plane with the guide clies,O of which the following is a specifica E, and the machine is thus adapted for the re My invention relates to machines employed ception of having teeth of varying pitch. for Setting the teeth of saws, and its main ob The teeth f of the cone enter the spaces be O tween the teeth of the saw, as may be seen by ject is to construct a machine capable of reference to the drawings. The saw is fed simultaneously setting alternate teeth in op into the machine with the teeth downward, inafter.posite directions, as more fully set forth here so that as soon as the teeth of the cone en gage with those of the saw they feed it regul In the accompanying drawings, Figure 1 is larly and evenly to the . The bear a plan view of my improved saw-setting ma ing-block G° is adjustable on the segment H, chine. Fig. 2 is a transverse sectional eleva and is secured thereto in suitable position by tion on the line 12, Fig. 1. Fig. 3 is a trans a set-screw g, passing through the sloth in verse sectional elevation on the line 3 4, Fig. the segment, so that when the position of the 1. Fig. 4 is a perspective diagram showing cone on the shaft G is altered the block G' the operation of the machine. Fig. 5 is a per may be raised or lowered to permit the teeth spective view of one of the , and Fig. 6 of the cone to engage with those of the SaW. is a view of a modification. On the shaft D'is a worm d", engaging with A are the end frames of the machine, se a worm-wheel i, mounted on a shaft I, hav cured together by cross-bars B, and mounted ing its bearings in brackets on the collar D'. 75 in bearings C on the frame is the main lon At the opposite end of the shaft I' is a gear gitudinal shaft D, having at one end a cone wheel i, the rotations of which are imparted pulley D', through the medium of which to a pinion i on the shaft G through the me power is applied to the machine. On this dium of an idler i. shaft D is a gear-wheelc, meshing with a gear The feeding device and its driving mech wheel c' on the second longitudinal shaft D', anism are duplicated at the opposite side of adapted to bearings C" on the frame A. These the machine, with this difference, that I pre two shafts D D' carry disks, on which are fer to drive the feeding-cone from the shaft mounted the tooth-setting hammers, which D instead of from the shaft. D', although this act to set the teeth alternately in opposite is not essentiai in carrying out my invention. 35 directions, In fact, a second feeding may be dispensed Secured to the frames A A are guideways with, although I prefer the use of two feed E, flared at their outer ends and being of ing devices. sufficient width to permit the passage of the On each side of the machine is a standard fixed Saw-blade. The guides are continued J, securely attached to one of the cross-bars 9 O through the machine, being cut away at a B and carrying at its upper end an point where the hammers act upon the saw, block K, as shown more clearly in Fig. 3 and and are provided with extensions E, which the perspective view, Fig. 5. This anvil-block pass under the anvils K and are held by the IX is in shape, and passing through bolt I, which secures the anvil in position. the central orifice therein is a bolt, k, which 45 G is a transverse shaft having one of its is tapped into an orifice in the standard J. bearings in a collar G' on a shaft D' and the An extension J of the standard passes up at other in a block G', adapted to slide on a seg the back of the anvil IX, serving as a brace ment H, secured to one of the cross-bars B of and taking the greater portion of the strail the machine, and mounted on this shaft is a from the bolt, k. CO 50 cone F, secured in position on the shaft by a On one of the bars B is a bracket I, pro collar f', through which passes a clamp-screw vided with an adjusting-screw bearing against f. This cone has a series of radiating teeth the rear of the standard J, and by which the 453,040 anvil may be moved from or toward the saw packing or filling pieces placed between the when adjustment is desired for thick or thin arms and the disk at the pivot-point of the saw-blades, and at the same time the bracket frame.Situated directly above each of the angles helps to sustain the blows given to the anvil Kisa weighted presser-bar S, having a grooved by the setting-hammers. I make the anvils guide-plate S', through which the back edge four-sided, as shown in Fig. 5, having beveled of the saw passes. This presser-bar S is guided portions l' k°, inclined to the angle required in suitable ways in an upright T, secured by 75 for the set of the teeth. The object of mak a bracket T to the standard J. The pressel ing the anvil four-sided and reversible is that has also an extension t, on which a weightt O when one portion of the anvil is worn an other can be utilized. Thus, as will be seen is placed. The extension t passes through a on referring to Fig. 5, I am enabled to use bearing t?, provided with a set-screw t, so that eight different portions of the anvil before if it be desired to secure the presser-bar S in its working-faces are completely worn away. an elevated position the set-screw is turned It will also be noticed that each edge of the to bear against the extension it. This adjust anvil has two beveled portions lic'k' at differ able presser-bar is not absolutely essential ent angles, the portion lc’ being in line with when setting the teeth of a straight-back saw - the first , while the portion k' is in that is, a saw in which the back edge is in a line with the second hammer on the Salme parallel line with the teeth-as a simple fixed disk, so that as the first hammer strikes the guide would answer the purpose, but when a tooth it bends it to a certain extent and the curved or tapered back saw is to be set a moV second hammer completes the operation. able presser-bar is essential to keep the teeth Directly opposite the anvil K is a disk M, of the saw in engagement with the feed-cone F. loosely mounted on the shaft D. This disk is The operation of the machine is as follows: . recessed at n n for the hammer's NN, which A saw a is passed from the guideway E and are mounted on arms M', pivoted at to the pushed through the machine in the direction disk M. The disk M is adjustably secured of the arrow, Fig. 4, until the first tooth comes by means of a number of screw-bolts in to a into engagement with the first feeding-cone F 95 slotted disk M, fast on the shaft D, so that Then as the hammers revolve they will strike the disk Mandits hammers can be adjusted to the teeth of thesaw, inclining them to a greater 3O strike the blow at the propertime. The ham or less extent according to the angle of the in mers in this instance are in the form of roll cline of the anvils. It will be noticed that the ers pivoted at n° n° to the arms MI, so that hammers of each disk are notin line With each ICC an even wearing of the whole surface of the other. The first hammer-that is, the hamlmer. hammer is effected. The upward movement nearest the feed-strikes a toothin such a mall 35 of each hammer is limited by a stop P, hav ner as to pressit against that portion of the all ing a lip p, and in order to adjust the extent vil having thelesser incline. Then as the SaWis of this movement I secure to each arm M’ a fed forward the partially-bent tooth is brought wedge q, one end of which passes between in line with that portion of the anvil having the lip p and the edge of the arm M'. This a greater inclination and is struck by the Sec wedge is secured in position by a set-screw q', ond hammer, and is set to the proper incline. passing through the slot at one end of the The feeding mechanism is so timed With re O Wedge, so that it may be adjusted to increase spect to the operation of the hammers that or diminish the space between the lip p and the first set of hammers will strike the first, the edge of the arm M'. The arm M' is forced third, fifth, &c., teeth and bend them in One 45 out by a suitable spring S, secured to the disk direction, while the second set of hammers M and tending to keep the hammer in an ex will strike the second, fourth, sixth, &c., teeth tended position, so as to strike the teeth, the and bend them in the opposite direction. I 15 Spring also serving to take up the recoil after The blade as it passes through the machine the blow is given. This spring, however, is comes into engagement with a second feed So not at all times necessary, as the hammers cone F and is carried by this feed-cone away are kept in the extended position by centrif from the hammers, after which it is removed ugal force when the machine is in full opera by hand and another saw-blade inserted in its tion. The arm M' and the mechanism com Seat. municating directly with it are also dupli In Fig. GI have shown a modified construc 55 cated on the shaft D, the anvil and its stand tion, in which the hammer is mounted in a ard being likewise duplicated. It will be block M', held in radial guides M, the extent seen that the hammers of the shaft D will of outward movement of the hammer being I25 strike a blow in One direction and the ham governed by a set-screw no and the hammer mers of the shaft D'a blow in the opposite being held out by a spring m'. direction, so that as the saw passes through the Having thus described my invention, I machine alternate teeth will be “set’ simul claim and desire to secure by Letters Pat taneously in opposite directions. The two ent arms M' on each disk M are not in line with 1. The combination, in a machine for Set each other, one arm being placed on either ting the teeth of saws, of an anvil, a disk ro 65 side of the disk and the distance between the tated in the same plane with said anvil and arms and the hammers being adjusted by carrying a hammer adapted to strike the teeth 458,040 of the saw placed upon the anvil, with feeding devices for said saw, substantially as specified. ferent inclined portions of said anvil succes 2. The combination, in a machine for set sively, substantially as specified. ting saws, of the anvils situated on the oppo 6. The combination, in a saw-setting mal site sides of the saw-blade, said anvil having chine, of the anvil, a disk rotated in the same two Working-faces of different inclination, a plane therewith, arms pivoted to said disk, disk... rotated in the same plane with the an hammers carried by said arms, stop P, and an vils, said disk carrying hammers on its oppo adjusting-wedge for regulating the extent of 35 site sides adapted to act successively upon the movement of said arms, substantially as speci O fied. saw-teeth, Substantially as specified. 7. An anvil for saw-setting machines, Com 3. The combination, in a saw-setting ma prising a rectangular block having on each of chine, of the anvil, a disk rotated in the same its edges two or more striking-surfaces of dif plane with the anvil, an arm pivoted to said ferent inclinations, substantially as specified. disk, and a roller carried by said arm and S. The combination, in a saw-setting ma" 15 specified.adapted to act as a hammer, substantially as chine, of the longitudinal shaft, a collar there 4. The combination, in a saw-setting ma on forming a bearing for one end of the feed chine, of the anvil, the disk rotated in the same ing-shaft, a segment H, a slide therein form- 45 plane there with, hammers carried by the disk, ing a bearing for the opposite end of said feed Said disk being loose on its shaft, a disk M, shaft, a toothed cone on said feeding-shaft, fixed to the shaft, and devices for adjusting stantiallywith mechanism as specified. for driving the same, Sub Said disks with respect to each other, substan In testimony whereof I have signed my so tially as specified. name to this specification in the presence of 25 5. The combination, in a saw-setting ma two subscribing witnesses. chine, of an anvil having two faces of differ THOMAS S. DSSTON. ent inclination and two hammers in line with Witnesses: - Such inclined portions and adapted to bend a JNO. E. PARKER, saw-tooth by placing it in line with the dif HARRY SMITH.