US1579A

US1579A - Machine for extracting stumps

Info

Publication number: US1579A
Authority: US
Publication date: 1840-04-30
Anticipated expiration: 1857-04-30

Description

Il I ED STATES PATENT OFFICE.

FREDERICK A. STUART, OF CATHARINE, NEW YORK.

MACHINE FOR EXTRACTING- SIUlVIPS.

Speccaton of Letters Patent No. 1,579, dated April 30, 1840.

To all whom t may concern Be it known that I, FREDERICK A. STUART, of Catharine, in the county of Chemung and State of New York, have invented 'a new and useful Improvement on l/Villard Fosters Machine for Extracting Stumps; and I do hereby declare that the following is a full and exact description thereof, reference being had to the annexed drawings of the same, making part of this specification.

The object of my invention is to construct a machine for extracting stumps which shall be simple in its structure and operation and by the aid of which one person with a suiiicient motive power, can with advantage perform said operation.

Figure l is a perspective view of the machine in a position in which it is used. a a are the two legs of a compass-shaped lever o-f sufficient length and strength-the feet being placed a suitable distance apart and the heads approaching each other and meeting at top confined securely by av ring ZJ passing around them. These legs in the operation stand astride the stump, the ring Z) being perpendicularly over the stump so that a lever power is obtained by attaching a rod, chain or line c to the ring b and tothe stump to be extracted. To the opposite side of the ring b I attach a rod, chain, or line CZ to which the motive power is attached. c is a brace at o-r near the center of the two legs which is intended for support. In light or alluvial soils the feet of the legs of the lever may rest upon such platforms f as are sufficient for support and are pre vented from slipping 0n said platforms by pins i Fig. 2 passing from the feetinto apertures g in said platform.

Fig. 2 represents the machine in its unemployed position lying flat on the ground. In order to elevate o-r place it in a position ready for use I place two crutches z, it upon its upper side, which are of a suitable length and which meet at their upper ends.

The above mentioned rod, chain, or line Z passes from the head of the compass lever over the ends of the crutches and by attaching a motive po-wer to the opposite end of said rod, chain, or line the bottom of the lever being held stationary it is easily raised into a perpendicular or inclined position. It may be remarked that about twenty feet is a suitable length for the legs of the compass lever for extracting stumps on o-rdinary land and small stumps and for large stumps about thirty feet will answer.

To prevent the chain from slipping I sometimes apply to the side of the stump a hold fast of the following construction. It is composed of a bar of iron B, Fig. 3 with sharp corks .c c turned at each end for entering the stump and a wedge w fastened on the back of said bar with the point toward the ground against which wedge the chain presses while drawing and drives the corks into the stump. The holdfast is placed against the stump andt-hus held by f a pin P driven through an aperture in the saine into the stump, the chain is then put around the stump and the holdfast near the point of the latter and secured. Vhen the drawing takes place the action of the chain on the wedge forces the corks int-o the stump and the wedge prevents the chain from slipping.

lVhat I claim as my invention, and which I desire to secure by Letters Patent, is-

The construction of the lever as before described so that the angle formed by the inclination of the lever and the chain attached to the stump can be decreased at pleasure independent of the size of the stump which is not the case with Fosters.

FREDERICK A. STUART.

Witnesses:

IVM. P. ELLIOT, EDMUND MA1-1ER.