US82047A - Improvement in saw-filing machine - Google Patents

Description

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JAMES H. VANNORTWIGK, OF IS'IIIRGrIS, MICHIGAN.

Letters Patent No. 82,047, dated September 8,1868.

IMPROVEMENT IN SAW-FILING MAGHINB.

TO ALL WHOM IT MAY CONCERN:

4 Be it known that I, JAMES H. VAN NORTWICK, of Sturgis, in the county of St. Joseph, and State of Michigan, have invented certain new and useful Improvements in Saw-Filing Machines; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specication, in which- Figure 1 is a plan view.

Figure 2 an end view.

Figure 3 a side view of the device by which the file-carriage is attached to thefeed-screw.

The nature ofVmy invention consists in the construction and general arrangement of a self-feeding machine for tiling saws, by which saws may be filed with .the utmost accuracy, and at the same time with great dispatch.

The machine will file any-sized tooth, and at any angle desired.

In order to enable others skilled in the art to which my invention appertains to make and use my invention, I will now proceed to describe its construction and operation. i

A represents auframe, made of suitable material, and of any dimensions required, which frame rests on legs, B B, and is provided on one side with clamps, C C, for holding the saw which is to be led.

A shaft, D, runs'through the frame A, havingits bearings in the sides thereof, and extending beyond said sides, and is provided in' one end with a crank, E, by the turning of which the machine is operated, or, if desired to run it by any other than hand-power, the other end of said shaft is provided with a wheel, F, on whicha belt may be put. A groove, a, runs the whole length of the shaft D, the use of' which will be hereinafter set forth.

Betweenvthe crank E and the end of the frame A, and on the shaft D, is a small cam, G, o'ne sid-e of which is cut off, as seen in g. 2. This wheel operates against an arm, H, which is provided with a small roller, c, so as to slide easily against the outside-periphery of the cam Gr. The arm Heis pivoted on the end=of the frame,

and isbent, the other end extending downwards, forming the lever, I, the lower end of which yis connected b'y a rod, d, to a similar lever, I, on the'same end, but other side of the frame.

On the rod d a pawl,f, is pivoted, which is held upwards by a spring, e, and catches into the cogs on the driving-wheel `K, which is secnred'to a part of the frameA, and gears into the pinion L. This pinion is on the end of the feed-screw M, which runs through the machine parallel to the shaft D, and has its bearings in the ends of the frame.

It will thus be seen that, byturning the crank E, the wheel G operates on the arm H, and, as soon as the round part ofthe wheel'strikes said arm, thepawlf forces the driving-wheel around, turning the feed-screw M rmtil the straight side of the wheel G comes against the arm H, when the pawlfis moved backward, ready to turn the wheel K, as soon as a new revolution of the crank commences.

The upper'side of the frame A is provided with ways, on which the carriage, N, slides, when the feed-screw is turned. The moving of said carriage is accomplished by means of twoarms, g gwhich are cut out and provided with screw-threads, so that, when put together, they form a nut,fitting on the feed-screw M. These arms Y are joined together at the top, by means of link or -ring, h, and pass down through a slot in the carriage N, surrounding the feeds'crew below the same, and the lower ends of said arms secured to a bent bar, z', on the under side of the carriage, as shown in fig. 3; so that, by this arrangement, the revolving of the feed-screwM moves the carriage to one side or the other.

On the shaft D is a collar, 7c, to which is secured a cogged wheel, O, which extends up through another slot in the carriage. The`collar k is provided with a lug or pin, which fits into the groove a on the shaft D, enabling it to slide along on said shaft, as the carriage is moved either way by the revolving of the feed-screw.

The wheel O gears into a smaller wheel, P, which is secured to a shaft, Q, on the upper side of thecarriage, having its bearings in ears thereon.

On the end of this shaft Q is another wheel, R, to which a p itman, m, is secured, by means of`a crank. This pitman is connected with the walking-beam u, moving the file-handle S back and forth.

T is a movable plate, on top of the carriage N, pivoted thereon, and can bel turned at any angle desired,

by means of a screw, U. On this movable plate a carriage, o, is placed, in which thc file-handle S slides, as moved by the walking-beam mentioned.

The ile is secured to the end of the lle-handle, and extends over the saw fastened in the clamps C C, and a spring,'p, is attached to the'le-handle, in such a manner that, when the handle moves forward, a projection, s, on each side of said spring, tits into grooves on the sides of the carriage o, holding the file down on the saw, and, as soon as the handle commences to move back, the spring bends upward, bringing the projections mentioned'on top ofthe carriage, lifting the file up from the saw.

It will thus be seen, that, by turning the crank E, th'e'le, as arranged in its handle, makes two strokes in the same tooth by one revolution of said crank, and, as it goes backl the second time, the feed-screw M is revolved, bringing the le to the next tooth, and so on, till the whole saw is filed. v I

After filing through, the carriage N is brought back; by pressing down the pawlf, and turning the feed-- wheel K iu the opposite direction, for which purpose a handle is attached to the same. 'Y

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. The combination of cam G, secured to the shaft D, arm H, levers I I, connecting-rod ,pawl f, and spring e, all constructed as described,` and operating for the purpose of turning the feed-screw M, `by means of the driving-wheel K, thereby moviugthe carriage N, substantially as herein'set forth.

2. The arrangement of the shaft'D, movable collar k, wheelsO, P, and R, in combination with the pitman m and walking-beam u, all constructed as described, for the purpose of moving the ile-handle S back and forth, substantially as 'herein set forth.v y o 3.A The combination of the movable plate T, carriage O, and screw U', to turn the file at any angle desired, substantially as herein set forth. 4

4. The arrangement of the tile-handle S, connected with the walking-beam u, and provided with the spring p, constructed and operating substantially as and for the purposes herein set forth.

5E The arrangement of the frame A, clamps C C, shaft D, feed-screw M, and carriage N, all with their diferent parts constructed as described, and operating substantially as and for the purposes herein'set forth.

In testimony that I claim the foregoing as my own, I aix my signature`in presence of two witnesses.

y JAMES H. VAN NORTWICK.

Witnesses: JAMES R. McKNIGHT A. A. POPE.

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