US39880A - Improved sawing-machine - Google Patents

Description

PATENT @erica N. B. BROWN, OF ANTWERP, NEW YORK.

IMPROVE!) SAWINGMACHINE.

Specification forming part ofLetterrs Patent No. 39,880, dated September 15,1863.

T0 a/ZZ whom t may concern:

Be it known that l, N. B. BROWN, of Antwerp, in the county of Jefferson and State of New York, have invented a new and lmproved VSawing-Machine, and I do hereby declare that the following is a full, clear, and exact description of tlie'same, reference being had to the accompanying drawings, making a part of this specification, in which- Figure lis a side elevation of my invention; Fig. 2, a plan or'top view of the same; Fig. 3, a vertical section of a cross-head pertaining tothe same, taken in the line w ar, Fig. l.

Similar letters ofvreference indicate corresponding parts in the several figures.

This invention relates to anew and improved crosscut-sawin g machine for sawingre-wood, Src.. and it consists in a novel and improved arrangement of means for feeding the log to the saw, whereby it is believed that several advantages are obtained over the sawing-machines hitherto devised for the same work or purpose.

To enable those skilled in the art to fully understand and construct my invention, I will proceed to describe it.

A represents a rectangular frame,which supports the saw and its driving parts 5 and B is a frame which is connected at right angles to A, and supports the log to be sawed. The frame B has a carriage, C, fitted upon it, and arranged in such a manner as to slide freely back and forth thereon. This carriage is provided with two dogs, c a, which are fastened into the log l), one on each side of it, and secure the back part of the log on the carriage. 0n the front part of the frame B there is placed a roller, E, which is grooved circumferentially at its center and provided with teeth b. The front part of the log D ts or rests in this groove, the teeth 'b penetrating the log. The carriage C may also be provided with teeth to penetrate the log and prevent the latter slipping on the carriage.

On ,one4 end of the shaft c of the roller E there is placed a bevel-pinion, d, into which a pinion, e, on a shaft, F, gears, the shaft F, being at right angles to the roller-shaft c, and having a pulley, f, upon it, around which a cross belt or rope, G, passes, said belt orrope also passing around a pulley, H, on a shaft, I, in the frame A. The pulley= H is placed loosely on the shaft I, and is connected with the latter when desired by means of a clutch, J, onepart, g, of which is attached concentrically to the loose pulley H, and the other part, IL, attached permanently to the shaft L The part g of the clutch has a groove, t', made circumferentially in it to receive a forked lever, K, which has its 4fulcrum j in a cross-bar, k, of the frame A. This lever K is connected by a rod, l, with a lever, L, which is at right angles to lever K, and is connected by a rod,m, with a spring, M, the latter having a tendency to keep the part g of the clutch J free from the part h, and consequently to prevent motion being communicated to the shaft F from the shaft I. The shaft l is the driving-shaft of the machine, and upon its outer end there is secured a pulley, N, having a wrist-pin, n, attached to it at any desired distance from its center, according to the length of` stroke required for the same.

O represents a metal bar or plate, which has a vertical or nearly vertical slot, o, made in it, through which the wristpin n passes. This bar O is provided with flanges or lugs p p', which project from it at right angles at opposite sides, and the bar 0 is made in two separate parts and connected by screws g. This arrangement is for the purpose of admitting of the wrist-pin n being inserted in the slot o ofthe bar or plate O. The plate or lug p is attached by bolts or screws to two parallel bars, r r, each of which has a way or guide, s, attached to its inner surface, and these ways or guides work in grooves made in plates t t at opposite sides of a rockshaft, P, on the frame A. The plate or lug p is bolted to a bar, Q, having the saw B attached to its outer end. This bar Q has a rod, u, attached to each side of it, and these rods u are fitted and work in grooves made in the inner sides of plates S S, which are attached by pivots c c to two slides, T T, fitted on uprights V V, a-ti tached to the frame A. The slides T are simply metal plates provided at each end with a lip, w, to project over the sides ofthe uprights V, and the pivots c pass centrally through the plates S into the slides T. The plates S S are connected by a bail-shaped bar, V, having a handle, c', attached to it for the purpose of raising the bar Q and saw R when necessary, and the bar and saw may be retained in an elevated position by means of a spring levercatch, b', or other suitable device. To the up- 2 sasso per end of each upright V there is attached a bar, W, and the front ends ot' the latter have a guide, X, secured to them, through which a vertical bar, Y, passes, said bar Y having a pulley, Z, at its lower end, which bears upon the back of the saw R.

From the above description it will be seen that when power is applied to the shaft I a reciprocating motion will be given lto the bar Q and saw It, in consequence ot' the wrist pin a of the pulley N working in the slot o ot' the har O, and the saw will he fed to its work by its own gravity, in connection with the gravity ofthe bar Q. The pulley Z serves as a guide for the saw It, and the plates S, rods u u, ways s s, and plates t t serve as guides for the bar Q. The latter, as well as the saw, is allowed to fall as the saw cuts in consequence ot' the slides T working freely on the uprights V V, and the kbar Q is allowed to work or adjust itself in a proper relative position, N, atall points in its descent, in consequence ol' the plates S S being allowed to work on their pivots o o, and the shaft P allowed to turn on its bearings. The log D is t'ed to the saw at any time by raising the lathe so that the bar Q will be retained by the catch b. r1 he operator then depresses the lever L, and thereby throws the part got the clutch in contact with the part h, and motion will thereby oe communicated to the shatt F from the shaft I, and the roller E will feed the log D along underneath the saw, the movement ot' the log being stopped at any time hy releasing the lever L.

The whole arrangement, it will be seen, is

extremely simple and efficient, and is applicable to all crosscnt-sawing.

I would remark that an auger, A', may he inserted in one end ofthe shaft 1and a table or bed, B', attached to frame A underneath the auger for the purpose of boring articles.

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

l. The said bar Q, provided with the rods u a, and filled between the plates S S, which are attached by pivots o to the slides T T on the uprights V V, in connection with the har or plate 0, provided with a slot, o, to receive the wrist-pin n of the pulley N, and the parallel bars r 1", provided with ways or guides s, fitted in plates thor an equivalent device, attached to a shalt, I), all arranged substantially as and for the purpose speeitied.

2. The means employed for giving the feed movement to the logD-to wit, the rollerl and carriage U, the log being attached or dogged to the latter, and resting or bearing on the roller, which is rotated at the will ot'the operator through the medium of the levers L K, clutch J, pulleyH, band G, and gearingsdc, all arranged substantially as and for the purpose specified.

3. The sliding bar I, with pulley Z attached, when used in connection with the saw It and arranged in relation therewith, as and for the purpose specified.

Vitnesses:

J osnrn NEWTON, l). L. CoLLiNs.

N. B. BROWN.

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