US374032A - Machine for setting saws - Google Patents

Description

(No Model.) V 4 Sheets-Sheet l'.

' J. C. BALLEW.

MACHINE FUR SETTING SAWS.

No. 374,032. PatentedNov. 2.9, 1887.v

Num AOW N (No Model.) 4 Sheets-Sheet 3.

"J. G. BALLBW.

MAGHINE FOR. SETTING sAWs. No. 374,032. Patented Nov. 29, 1887.

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J. C. 'BALLEW MACHINE POR .SETTING rSAWS. A, No. 374,032. Patented Nov. 29, 1887.l

UNITED STATES PATENT Ottica.-

JOHN C. BALLEW, OF EVANSVILLE, INDIANA.

MACHINE FOR'SETTING SAWS.

v SPECIFICATION forming part of Letters Patent No. 374,032, dated November 29, 1887.

' .ippncationlea June 1o, its?. serial riminese. (No model.)

To aZZ uhom/ t may concern.-

Be itknow'n that I, J oHN C. BALLEW, a citizen of the United States, and a resident of Evansville, in the county of Vanderburg and State of Indiana, have invented'certain new and useful Improvements in Machines for Setting Saws; and I do hereby declare that the following is a full, clear, and ,exact description of the invention, will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, which form a part of. this specification, and in which- Figure l is a perspectiveview of my irnprqved machine for setting saws. Fig. 2 is a front view of the same.

side.` Fig. 5 is avertical sectional view taken through the shafts of the rollers. Figj. 6 is a rear view, and Fig. 7 is a top plan view.

Similar numerals of reference indicate corresponding parts in all the figures. y Myiinvention has relation to machines for setting saws, and more especially for machines for setting band-saws; and it consists in the improved construction and combination of parts of a machine in which the saw is drawn between two rollers provided with beveled cogs at their ends meshing with each other,d

per end of this shaft has a hand-wheel or iiywheel, 7, provided with a crank, 9, or similar means for revolving it, and a small cog-wheel, 10 secured upon the shaft between the flywheel and the bearing, while the lower end of the shaft below the bearing is provided with a beveled pinion, 11. rI his pinion meshes with a beveled cog-wheel, 12, journaled upon a shaft, 13, secured with its ends in the front and back pieces, and the forward face of this Fig. 3 isa side view. Fig. 41s a similar view seen from the other,

beveled cog-wheel hasla roller, 14, secured to it, formed at its outer end with a number of4 per end of ascrew, 20, is journaled, the said l screw fitting and turning in a screw-threaded perforation, 21, in alip, 22, projecting from' the back plate at the lower ends of the ways, and having a hand-wheel, 23, for turning it.

A roller, 24, is journaled upon the shaft of the sliding block, and is provided with beveledv cogs 25, similar to the beveled cogs upon the upper roller and registering with the spaces between the said c0gs,which spaces 26 are correspondingly beveled, and this lower roller is provided at its inner end with a cogged rim, 27, which meshes with a similar cogged rim, 28, upon the inner end of the upper roller.

A stirrup, 29, is `hinged with its free ends to the lower end of the front piece of the frame, swinging outward, and a set-screw, 30, is fitted in a screw-threaded perforation, 31, in the' lower doubled end of the same, having its upper end fitting into a recess or notch, 32, in the outer end of the lower shaft, the said screw serving to retain the lower roller upon the shaft, a washer, 33, being interposed between the end of the roller and the screw.

Two rods, 34, slide in horizontal bearings 35 in the back piece and have horizontal slots or notches 36 in their ends, open at the ends andregistering with the space between the rollers, and the lrear ends of these rods are united by a yoke, 37, having a screw-threaded perforation, 38, in its middle, 'in which perforation a screw, 39, fits and turns, the said screw having a suitable hand-wheel, 40, for turning vit at itsouter end, and vhaving its inner end IOO of the front piece, and the other' arm of thev bracket, which is bent at a right angle to the inner arm,has a frame, 45, sliding upon it with a horizontal recess or groove, 46, having a hori zontal slot, 47, through which a screw, 48, passes into the arm of the bracket. The upper and lower ends ot' this frame are formed with vertical bearings 49, in which a vertical shaft, 50, isjournaled, and the lower end of this shaft is provided with a wheel, 5l, having ratcheteteeth corresponding to the shape of the teeth of the saw, while the upper end of the shalt is provided with a cog-wheel, 52, which meshes with the pinion upon the vertical driveeshalt.

When the machine is to be used for setting a saw, the screw in thestirrup is screwed down out of engagement with the notch in the shaft, whereupon the stirrup is tilted up and the sliding block drawn down by the screw, drawing the lower roller down. The saw-blade 53 is thereupon inserted between the two rollers, and the sliding block is raised by the screw until the beveled cogs of the rollers press sufiieiently against the teeth of the saw to give them the proper set, whereupon the stirrupis tilted down and the screw turned up until it again engages the notch of the shaft. The horizontal rods are now forced forward by means of the screw in the yoke until the back of the saw bears against the inner ends of the slots, and the frame having the vertical shaft is adjusted upon the arm of the bracket and the bracket upon the front piece until the ratchet-toothed feed-wheel engages the teeth of the saw with its teeth, when by turning the drive-wheel the saw will be fed between the rollers and the beveled teeth or cogs of the rollers will alternately set the teeth of the saw t0 both sides, setting the teeth evenly and in a comparatively short space of time.

It will be seen that a saw may have its teeth set in this machine by a person without any particular skill in setting saws, as it is only necessary to place the saw in the machine and to adjust the guides and the feed-shaft and wheel, when the turning of the drive-wheel will do all the setting, the proximity of the rollers to each other regulating the set of the teeth.

The horizontal slotted rods arey adjustable for the purpose of allowing saw-blades of various widths to be set in the machine, and the feed shaft and wheel must be adjustable, so as to bring the wheel to bear against the teeth of the saw and to bring the teeth of the feed-wheel and the teeth of the saw to register, the wheel being adjusted farther out for saws having long teeth and farther in for saws having short teeth.

It follows that other saws besides band-saws maybe set in this machine, although it is principally intended for setting band-saws, as the guide-rods and the rollers, as well as the feed, are all adjustable to different thicknesses and widths of saws,as well as to saws having teeth of different lengths.

and desire to secure by Letters Patent of the' United States- 1. In a machine for setting the teeth of saws, the combination ot' a roller having means for revolving it and formed at one end with cogs projecting beyond the surface,and having beveled sides facing inward, a similar roller having its cogs meshing with the other roller, and having means for adjusting it toward and from the other ro1ler,horizontallyadj ustable slotted guides for the sawregistcring with the space between the rollers, and a feedwheel'at one side of the rollers, having ratchet-shaped teeth meshing with the teeth of the saw, as and for the purpose shown and set forth.

2. In a machine for setting the teeth of saws, the combination of a roller having means for revolving it and formed at one end with cogs projecting beyond the surface,aud having beveled sides facing inward, and provided at the other end with a cogged rim, a block sliding in ways and having means for adjusting it toward or from the roller, and provided with a shaft projecting parallel to the shaft of the roller, a roller similar in shape to the other roller, having its beveled cogs meshing with the beveled cogs ofthe other roller, and having a cogged rim meshing with the other rim, and horizontal guides registering with rthe part of the rigid roller nearest to the movable roller, as and for the purpose shown and set forth.

3. In a machine for setting the teeth of saws, the combination, with a pair of rollers having beveled cogs at one end meshing with cach other, and having the beveled sides facing inward, of rods sliding in horizontal bearings at both sides of the rollers, and having horizontal slots in their ends open at the ends and registering with the space between the rollers,and having their rear ends connected by a yoke, and a screw journaled at one end and having its threaded portion passing through a threaded perforation in the middle of the yoke, as and for the purpose shown and set forth.

, 4. ln amachinc for setting the teeth of saws, the combination, with a pair of rollers having cogs at one end meshing with each other, and having beveled sides facing inward and projecting beyond the surfaces of the rollers, and provided with means for revolving them, of a feed-wheel at one side of the rollers, having means for revolving it with the rollers, and having ratchet-shaped teeth for engaging the teeth of the' saw, as and for the purpose shown and set forth.

5. Ina machine for setting the teeth of saws, the combinat-ion of a frame composed of an upright back piece and a forwardly-bent top piece and a downwardly-bent front piece, a roller journaled upon a shaft secured in the front and back pece,and havinga cogged rim at its inner end and means for revolving it, and having cogs at the outer end projecting beyond the surface and having beveled sides IIO facing inward, a similar roller having its cogged rim and its beveled cogs meshing,and having means for adjusting it toward or from the other roller and journaled upon a shaft having a notch or recess in the under side of its outer end, and a stirrup hinged with its ends to the lower end of the front piece above the lower roller, and having a set-screw in its doubled end bearing with its end in t-he recess or notch of the adjustable shaft, as and for the purpose shown and set forth.

6. In a machine for setting the teeth of saws, the combination of a frame consisting'of an upright back piece and a forwardly-bent top piece and a downwardly-bent front piece, aroller journaled upon a shaft extending through the front and .back piecev and having means for .revolving it, and provided with a cogged rim at its inner end and with cogs at the outer end projecting beyond the surface of the roller and having the inner sides beveled, a block sliding in vertical ways upon thelower portion of the back plate, and having a lip projecting-from its lower end and a shaft projecting from the upper end formed with a recess or notch in the under side of the outer end, a screw provided with a hand-wheel at its lower end and turning in a perforated lip 4upon 4the back piece,and having its upper end journaled in the lip of the sliding block, a roller similar to the upper roller journaled upon the shaft of the sliding block,and having its cogged rim and beveled cogs meshings and a stirrup hinged with its ends to the lower end of the iront piece and provided with a setscrew having its upper end engaging the recess or notch in the shaft of the sliding block and working in the doubled end of the stirrup. as and for the purpose shown and set forth. l

7. In a machine for setting the teeth of saws, the combination of two rollers having cogged rims at the inner ends and cogs at the outer ends projecting beyond the surfaces and hav- 1 ing beveled sides facing inward, a verticallyjournaled drive-shaft having a pinion engag-Y ing a beveled cog-wheel upon the upper roller, and having a small pinion below its fly-wheel, a bracket having a horizontally-slotted arm sliding adj ustably upon the front of the frame for the rollers above the upper roller, and having an outwardly-projecting arm, a frame sliding with ahorizontally recessed and slotted central portion upon the outer arm of the bracket, and having vertical bearingsat its ends and a shaft in the bearings, provided at the upper end with a cog-wheel meshing with the pinion upon the drive-shaft, and having at its lower end a wheel formed with ratchetshaped teeth engaging the teeth of the saw,

the said wheel registering with the space between the two rollers, as and for the purpose shown and set forth.

8. In a machine for setting the teeth of saws, the combination of a frame having an upright back piece secured to a bench or other obj ect, and having' a forwardly-bent top piece and a downwardly-bent front piece, and provided with vertical ways upon the lower portion of the back piece and with a lip at the lower end of the ways formed with a screw-threaded perforation, a vroller having a beveled cog-rim at its inner end, and having a cogged rim next tothe beveled rim, and provided with cogs at the outer end, having beveled sides facing inward and projecting beyond the surface ot' the roller, a vertical shaft journaled in the top piece and having a fly-wheel at the upper end, provided with suitable means for revolving it, and having a pinion under the flywheel and a beveled -pinion upon the lower end meshing with the beveled rim ofthe roller, a block sliding in the ways of the back piece and having an outwardly-projecting shaft at ,the upper end and a lip at the lower end, having a screw journaled in it turning in the threaded perforation of the lip of the back piece, a roller similar to the upper rollerjournaled upon the shaft and meshing with the cogged rim and the beveled cogs of the upper roller, a stirrup hinged with itsends to the vlower end ofthe front piece, and having asetscrewk in its doubled lower end engaging a notch or recess in the outer end of the shaft of the sliding block, rods having horizontal slots in their forward ends registering with the space between the rollers and sliding in horizontal bearings inthe back piece, and provided withl a uniting-yoke at the rear ends, a

screwjournaled with its inner end in the back piece and fitting ina screw-threaded perforation of the yoke,` a horizontally-adjustable bracket upon the front piece of the frame, a frame sliding outwardly adjustable upon the bracket, and having vertical bearings in its IOO IIO

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