US36585A - Improvement in stump-extractors - Google Patents

Description

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Mam 56m f% AM. P'IOTU-LITHUA. C0. N.Y. (OSBRNE'S PROCES NiTED STATES Frise@ AT1-DNT ISAAC HICKS, OF` HARTFORD, WISCONSIN, ASSIGNOR TO HIMSELF AND LEWIS E. PECK, OF SAME PLACE.

llVlPROVElVlENT IN STUMP-EXTRACTORS. I

Specification forming part of Letters Patent No. 36,585, dated September 30, 1862.

To @ZZ whom it may concern.-

Be it known that I, ISAAC HICKS, of Hartford, in the county of Washington and State of Visconsin, have invented a new and Improved Machine for Extracting Stumps; and I do hereby declare that the following is a full, clear, and eXact description of the same, refer- Y ence being had tothe accompanying drawings,

stumps from the earth-one that may be oper ated with facility and readily moved from place to place in order to be applied to its work.

To this end the invention consistsin the ernployment or use of two levers, or, rather-,a conipound lever, in connection -with a lifting-bar and a fulcrum-supporting bar, all applied to a mounted frame and arranged as hereinafter fully shown and described.

The invention also consists in a novel arrangement or application of a back pair of Wheels to the frame, whereby the latter, when the machine is tobeused orappliedtoits work, may be made to rest upon the ground and the wheels and axle not allowed to be subjected to any strain or to sustain any weight while the machine is at work.

A represents a frame, which is composed of two parallel sill-pieces, au, having each two uprights, b b, attached,the upper ends ofwhich are connected by cross bars c c. B is a bar, which is slightly inclined from a horizontal position, its front end being the lowest and resting upon the bolster d' on the axle e of a pair of wheels,ff. The back end of the bai-B rests upon the top of the frame A, and it is chamfered or beveled off at its upper surface and back end, as shown in'Fig. l at g. In the upper surface of the bar B there is fitted a plate, lz, which is at the inner end of the bevel gand forms the fulcruxn of a lever, C, which is di rectly over the bar B, and is beveled at its under side directly over the bevelg ofthe bar B, as shown at t' in Fig. l. The bar B and lever C have slots j made through 'them at their beveled portions, and through these slots a lifting bar, D, passes, and is retained by pins k,which will be presently described. Inthe bar B there is secured by a pin, Z, the lower end of a perforated bar, E,which passes up through a mortise, m, in the lever C, and in the upper surface of the lever C, at its inner end, there is fitted a metal plate, n, which serves as abearing for a lever, E, through which the perforated bar E also passes.

The operation is as follows: The lower end of the lifting-bar D is attached t0 the stump to be extracted and the short arm of the lever C is forced down and a pin, lc, passed through the bar D in contact with the upper surface of the lever C. The inner end of the lever E is then forced down and a pin, o, passed through it in contact with the upper surface o f lever E; The outer end of the lever E is then pressed down, and the pin o serves as afulcrum for it. This movement of the lever forces down the inner end or longer arm of the lever C, and its shorter arm is of course elevated and the drawbar D raised to a certain extent. In order to hold the lifting-bar, a pin, o, is passed through the bar E, directly over lever C, and a pin, 7c, is passed through a lifting bar, D, directly over the bar B. The pin k, which passes through the bar I) over levewC, is then withdrawn,and also the pin o,which passes through the bar E over the lever C. The short arm of lever C is then again forced down and a pin, k, passed through D above the short arm of lever C, and the inner end of the lever Fis also forced down and a pin, o, passed through the bar E directly over F, which is again forced down at its outer end to actuate the lever C and further elevate the lifting-bar D. This operationof the levers C E is repeated until the stu mp is extracted. By this arrangement a single person may operate the machine, and each bar D E has two pins, 7c 7c o o, attached to it by a cord for the purpose of being passedl ment. The device is moved about from place to place on four wheels, one pair of which,ff, have been previously alluded to, and, being arranged in a way common to all Wheel-vehicles, do not require a minute description. The application, however, of the back wheels, G G, is peculiar, and forms an essential feature of the invention. The wheels G Gare attached to an axle, H, which has a short perch' or reach, I, yconnected to it, the front end of which is fitted on a guide-rod, J, which is at the under side of the bar B. The perch or reach I is allowed to slidel freely back and forth on the rod J. (SeeFig. l.) y

K K represent two levers` which are secure by fulcrum-pinspp in the back or outer uprights, b b, ofthe frame A. These leverspass through slots or mortises in the nprights b b and iit in grooves c c' in the upper surface of the axle H of the wheels G G. To each lever K there is attached a hook, L, which ext-ends downward.

Vhen the machine is to be mounted in order to be drawn from place to place, the inner ends of the levers K K are depressed or forced down and the hooks L L are inserted in holes in the inner ends of the sill-pieces a ct, as shown in Fig'. 1, and the frame A will consequently be supported by the axle H, the aXle bearing against the inner uprights, b b.

When the machine is to be applied to its work, the hooks L L are detached from the ends of the side pieces, a a, and the frame A is let down upon the ground. The raising and lowering of the frame A can be effected by one person.

This machine may be very cheaply con. structed, and it contains no parts which are liable to get out of repair, and when repairing is necessary it can be performed by almost any one familiar with mechanics tools. l

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

l. The combination of the bar B, levers C F, one or both, liftingbar D, and fulcrum-supporting bar E, all arranged to operate as and for the purpose herein set forth.

2. The applying of the wheels G G to the frame A of the machine through the medium of the levers K K and hooks L L, arranged with the axle H and sill -pieees a a of the frame, as and for the purposeherein specified.

ISAAC HICKS.

Witnesses:

MERRITT BRowNELL, R. S. KNEELAND.

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