US17528A - Stump-extractor - Google Patents

Description

UNITED STATES PATENT oEEioE.

PETER TRAXLER, OF SGOTTSBURG, NEW YORK.

sTUivrP-EXTRACTOR.

Specification of Letters Patent No. 17,528, dated .Tune 9, 1857.

To al? whom it 'may concern:

Be it known t-hat I, PETER TRAXLER, of Scottsburg, in the county of Livingston and State of New York, have made and invented certain new and useful Improvements in Machines for Pulling Stumps of Trees and Similar Purposes; and I do hereby declare the following to be a full and accurate description thereof, reference being had to the accompanying drawings and to the letters of reference marked thereon, same letters referring' to like parts in both figures.

It will be observed in said drawings that my machine consists primarily of a stout frame across the top of which passes the two beams A A. These beams contain boxes in which the beam B is free to revolve. Through B a long and narrow slot is cut through which pass the three bars a, b, c. The bars a and c are pierced with holes as seen in the drawing and are supported by the pins P, P, passing through them and resting upon the beam B. The bar Z) is supported at its lower extremity by the pin cl which passes through it and the lever Z-said lever being in turn supported by the pins e e passing through it and the bars c and a.

The whole machine moves on the wheels W 'W which may be raised and lowered in a well-known manner.

In moving the machine over a stump the bar r is raised and is let down after the machine is in place; and serves to hold the machine firm.

The machine is moved from place to place by any suitable locomotive power-*a horse being generally used.

Having fixed the clamps or dogs, attached to a proper chain connected to K, to the stump the operation of raising it is as follows: One end of the lever Z being depressed, the other being lifted at the same time the pin passing through the vertical bar nearest the descending end of the lever will become the fulcrum and the bar b will be raised with a force proportionate to the force applied to the ends of the lever multiplied severally by the number of times the short end of said lever is contained in the long one. Thus if 150 lbs. be exerted at bar ZJ with a force equal to 150 lbs. multiplied by the number of times the space d e is contained in the space between e and the end of the lever. And the ascending force applied at the left hand end will tend to raise the bar Z) with a force equal to 150 lbs. multiplied by the number of times the space Z e is contained in the space between d and the end of the lever-which as will be seen is a little greater than the force exerted by the descending powerd being the center of the lever. Thus both ends of the lever are efective-the greatest leverage being given however to the most effective .power viz. the lifting force. IVhen the bar b has been elevated as much as possible by one movement of the lever itwillbe evident that the bar a or c will have been also raised through the Slotin the beam B so as to bring a lower pin-hole above said beam. A pin being put through this hole will prevent the bar from descending on the motion of the lever being reversed. I prefer pins to a pawl or ratchet as they allow greater freedom of motion on the 'part of the bars a and c which is a very essential point in this machine, as, although it is always best to have the machine as nearly as possible over the center of the stump to be pulled yet stumps do not always come out straight. Hence the necessity for freedom of motion in every lateral direction which is afforded by the combination of the three bars hung as described on the revolving beam B. And it is in the peculiar arrangement of parts securing this that the nature ofV my invention consists as is more definitely expressed in the following.

Having thus described my invention what I claim therein as new and desire to secure by Letters Patent is- The combination of the three` bars a, b, c with the slotted beam B, and lever l, said beam B being free to revolve in the manner described.

I am aware of the construction of the lever of Sagaronsse and several modifications thereof and do not claim the reciprocating lever thus used but simply my combination substantially as above set forth. i

v PETER TRAXLER. Witnesses:

CITAS. W. LITTLE, Sr., H. M. PHIN.

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