US5053A - Crosscut-sawing- machine - Google Patents

Description

R. B. BROWN, OF WILLIVSTON, VERMONT.

CEosseUT-sAWING MACHINE.

Specification of Letters Patent No. 5,053, dated April 10, 184i?.

T0 all whom t may concern:

Be it known that I, REED B. BROWN, of Williston, in the county of Chittenden and State of Vermont, have made a new and useful improvement in the manner of constructing a machine for the sawing of cordwood for domestic purposes; and I do hereby declare that the following is a full and exact description thereof.

The power for actuating the saw is to be derived from a weight that passes over a pulley, and that is to be wound up in a manner to be presently described. The wood to be sawed is to be placed by hand upona wood-horse, formed in the usual manner, and is to be held down during the operation of the saw by means of a weighted lever made to press on its upper part. In the arrangement of the gearin for operating the saw, there isnot anything that is substantially new, and I do ynot intend, therefore, to make any claimfto this part; but I have added thereto an apparatus for raising the saw, and for arrestingthe descent of the moving weight by the falling of the saw frame when the piece of wood has been separated by the saw, so that the whole remains at rest until a new stick of wood is placed upon the horse by the attendant. I have also devised a plan to facilitate the winding up of the weight by the coiling of a rope upon a reel, which coiling takes place while the weight is running down; the Weight may then be wound up by drawing upon the rope which has been so coiled.

In the accompanying drawing Figure 1, is aside elevation of my machine, and F ig. 2, shows this disengaging machinery by means of which the saw is lifted, and the motion of the machine arrested. v

A, is a weight attached to a cord B, and passing over a pulley C, the other end of the cord winding around a barrel on the axis of the wheel D; a pinion on the axis of this wheel gears it into a pinion on the axis of the wheel E; and the teeth of this wheel gear into a pinion on a shaft F, that carries a crank G, which gives motion to the saw H, through the intermedium of the lever I, that has its fulcrum at J. A vibrated rod K, K, connected to the lever I, and to the saw frame carries the saw.

L, L, are guide bars between which the rod K, passes, and which check its lateral` motion. M is the stick upon which the saw is supposed to be operating, and N, the weighted lever by which it is held down on the horse O. Vhen a stick has vbeen sawed olf, and its end falls, it will permit the said frame to descend, and this will set in action the lapparatus by which the saw frame is to be raised, and the descent of the weight A,

is made to fall from this shelf, the ropek will not only be rendered taut,but the saw frame will be raised by it, and the rod K, K,

be ybrought into contact with the cap piece L or upper part of theguide pieces L, L.

From the upper side of the rod K project two pins a, a, Fig. 1, and these passing one on each side of the cap L, of the guides L, L,

will arrest the vibration of the rod, and, consequently, the descent of the weight A. The cord P, P, passes over the pulleys S, S, as most distinctly shown in Fig. 2. As soon as the stick is sawed off the saw will fall to a certain distance and the rod K, coming into contact with the end T', of a bent lever T, the other end of which embraces the edge of the tilting shelf R, the said lever will be drawn away from this shelf, the weight Q, will fall, and the saw frame will be drawn up by the cord P, which will have the effect of arresting the descent of the weight A.

U, is a reel upon the axis of the wheel D, and as the weight A, descends the cord VV, will be wound on this reel, and when the weight has arrived at the bott-0m of its course, a person may take hold ofand run out with, the cord V, which will `wind the rope B, on to the barrel of the wheel D, and raise the weight A, to the pulley C..

Having thus fully described the manner in which I combine and arrange the respective parts of my improved machine for sawing cord-Wood, what I claim therein as new, and desire to secure by Letters Patent, is-

The combination of the apparatus for elevating the saw, and arresting the descent of the Weight which is t0 operate as a motive power, the arrangement of the respective parts being substantially the same Withthat herein described and represented-that is to 10 say, I claim the combination of the bent lever T, tilting shelf R, Weight Q, cord P, lever K and pins a a, cap piece L and lever IWith the rod connecting it to the crank G.

' REEDB. BROWN. Witnesses:

THos. P. JONES, LEM. WILLIAMS.

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