US147631A - Improvement in saw-jointers - Google Patents

Improvement in saw-jointers Download PDF

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US147631A
US147631A US147631DA US147631A US 147631 A US147631 A US 147631A US 147631D A US147631D A US 147631DA US 147631 A US147631 A US 147631A
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saw
file
files
jointers
improvement
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D63/00—Dressing the tools of sawing machines or sawing devices for use in cutting any kind of material, e.g. in the manufacture of sawing tools
    • B23D63/08—Sharpening the cutting edges of saw teeth
    • B23D63/12—Sharpening the cutting edges of saw teeth by grinding
    • B23D63/14—Sharpening circular saw blades

Definitions

  • Figure 1 represents a side view of my improved machine for dressing saws, as applied to a circular saw.
  • Fig. 2 is a sectional plan view, and
  • Fig. 3 is an end view, of the same.
  • the object of my invention is to provide for the use of sawyers an improved machine for dressing and truing the teeth of circular and other saws, by which the operation is accomplished in a rapid and accurate manner.
  • the invention will first be fully described, and then pointed out in the claim.
  • A represents the base or guide piece, which is secured in suitable manner to the saw-frame, so that the fileholding frame or carriage B may be instantly applied for use or withdrawn, as required.
  • the fileholder B is carried backward and forward by a screw, a, which turns in bearings 11 of base A, and acts on the socket (1,. applied to the bottom of the file-holder which socket runs in suitable guide-grooves d of basepiece A.
  • the fileholder B consists ofa U-shaped frame, with adjustable screws 0 at the front ends of the parallel legs, which screws project toward the inside for guiding the saw steadily between them.
  • Three files, O are secured to the inside of the rear part of file-holder B, one being placed vertically to the legs in grooves f of the same, the two other files being set in'recesses f, parallel to the legs back of cross-file G.
  • the files U are firmly retained in the fileholder B by means of a wedgeshaped key, D,
  • the parallel files G are ads justed nearer or wider by supporting set-screws h, according to the thickness of the saw to be filed.
  • the front file O and rear washer g are made of wedge shape, and adjusted by means of screws i, which pass through the end of fileholder B, and produce the square setting of the files.
  • a central guide-screw, 1, passes also to the roar of file-holder B, and through rear washer g, to key D, binding thereby the key and files firmly together. 7
  • the file-holder is adjusted on the. saw so that the same runs steadily between the end screws.
  • the saw By turning, then, the saw backward the first file acts as a gage and file on the circumferential edge of the teeth; gives a true edge, and dresses them smoothly and evenly.
  • the key is then loosened and taken out with the front file and washer.
  • the file-holdcr is then screwed forward and the side files adjusted to the saw, which is then passed several times along the same until the rough side edge of the teeth is taken off, and a perfectly smooth and square edge is produced.
  • the file-holder is then can ried back, requiring, after being once set, but little adjustment, which is, however, easily obtained by detaching the sliding file-holder and adjusting the bottom set-screws.
  • the saw when dressed in this manner, will cut evenly and quickly through the wood, and produce a smooth quality of lumber.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dovetailed Work, And Nailing Machines And Stapling Machines For Wood (AREA)
  • Surgical Instruments (AREA)
  • Knives (AREA)

Description

E. GUWDYQ Saw-Jo inters.
No. 147,631. Patented Feb. 17.1874.
WITNESSES: INV TUB:
W BY
I monuivs.
UNITED STATE$ PATENT Orrrca.
EDWIN cownr, on PETTISVILLE, orrro.
IMPROVEMENT IN SAW-JOINTERS.
Specification forming part of Letters Patent No. 1 12631, dated February 17, 1874 application filed December 6, 1873. 7
To all whom it may concern:
Be it known that I, EDWIN Gownr, of Pettisville, in the countyof Fulton and State of Ohio, have invented a new and Improved Machine for Dressing Saws, of which the follow ing is a specification:
In the accompanying drawing, Figure 1 represents a side view of my improved machine for dressing saws, as applied to a circular saw. Fig. 2 is a sectional plan view, and Fig. 3 is an end view, of the same.
Similar letters of reference indicate corresponding parts.
The object of my invention is to provide for the use of sawyers an improved machine for dressing and truing the teeth of circular and other saws, by which the operation is accomplished in a rapid and accurate manner. The invention will first be fully described, and then pointed out in the claim.
In the drawing, A represents the base or guide piece, which is secured in suitable manner to the saw-frame, so that the fileholding frame or carriage B may be instantly applied for use or withdrawn, as required. The fileholder B is carried backward and forward by a screw, a, which turns in bearings 11 of base A, and acts on the socket (1,. applied to the bottom of the file-holder which socket runs in suitable guide-grooves d of basepiece A. The fileholder B consists ofa U-shaped frame, with adjustable screws 0 at the front ends of the parallel legs, which screws project toward the inside for guiding the saw steadily between them. Three files, O, are secured to the inside of the rear part of file-holder B, one being placed vertically to the legs in grooves f of the same, the two other files being set in'recesses f, parallel to the legs back of cross-file G. The files U are firmly retained in the fileholder B by means of a wedgeshaped key, D,
and washers g. The parallel files G are ads justed nearer or wider by supporting set-screws h, according to the thickness of the saw to be filed. The front file O and rear washer g are made of wedge shape, and adjusted by means of screws i, which pass through the end of fileholder B, and produce the square setting of the files. A central guide-screw, 1, passes also to the roar of file-holder B, and through rear washer g, to key D, binding thereby the key and files firmly together. 7
After the teeth of the saw have been swaged, so that the teeth are spread a little more than necessary for use, and the shorter teeth raised sufficiently to strike the first file, the file-holder is adjusted on the. saw so that the same runs steadily between the end screws. By turning, then, the saw backward the first file acts as a gage and file on the circumferential edge of the teeth; gives a true edge, and dresses them smoothly and evenly. The key is then loosened and taken out with the front file and washer. The file-holdcr is then screwed forward and the side files adjusted to the saw, which is then passed several times along the same until the rough side edge of the teeth is taken off, and a perfectly smooth and square edge is produced. The file-holder is then can ried back, requiring, after being once set, but little adjustment, which is, however, easily obtained by detaching the sliding file-holder and adjusting the bottom set-screws. The saw, when dressed in this manner, will cut evenly and quickly through the wood, and produce a smooth quality of lumber.
Having thus described my invention, I claim as new and desire to secure by Letters Patcut- The machine for dressing saw-teeth, consisting of base-piece A, with longitudinal screw to for carrying thereon the file-holder B, with files O, secured firmly therein by key D and washers g, and arranged and operating substantially in the manner and for the purposes set forth.
EDWIN G'OWDY. Witnesses:
WILLIAM I. Fosrnn, DANIEL J. WALTER.
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