US390390A - Stump-puller - Google Patents

Description

2 sheew-sneet 1.

(No Model.)

J M. MOORE.

STUMP FULLER.

No. 390,890. Patented Oct. 2, 1888.

llVVE/VTOR ATTORNEY N. PETERS, PhnlnLitlwgnphur, Waihinglcn. DJ;

(No Model.)

. K 2 Shets-Sheet 2. J. M. MOORE.

STUMP PUL LER.

Patented Oct. 2,

INVENTOR A TTOl-NVEY N. PETERS. phowmms p cr, Walhingmn, 04 C.

JAMES M. MOORE, OF UNION CITY, TENNESSEE.

STUMP PULLER.

fiiPECIEICATION forming part of Letters Application filed May 4, 1888. Serial No. 272,795.

To all whom it may concern.-

Be it known that I, JAMES M. Moons, of Union City, in the county of Obion and State of Tennessee, have invented a new and useful Improvement in Stump-Pullers, of which the following is a full, clear,and exact description.

The main object of this invention is to pro vide a stump-puller whereby, with the application of a constant power, the effective force exerted to uproot the stump will be greatest and the speed the slowest at the commencement of the work, or when the resistance is greatest, and as the work progresses and the resistance correspondingly lessens the effective force will be correspondingly decreased and the speed increased, so that the work will be completed in the shortest time possible.

Further objects are to provide for the ready adj ustability of the effective force in accordance with the resistance to be overcome, and to secure greater strength, efficiency, and port ability than have been heretofore generally at tained in devices of this character.

The invention consists of various novel features of construction and combinations of parts, substantially as hereinafter fully described, and as distinctly pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in both the figures.

Figure 1 is a perspective View of a stumppuller embodying my invention, and Fig. 2 is a sectional side elevation of the said stumppuller.

The stump-puller shown is mounted to travel on two parallel sills, A B, of which the sill A is much the longer, and which are provided with longitudinal runners A B, respectively.

On the rear end of the main sill A is erected a rigid four -legged derrick, O, the top of which is connected to the respective end of the short sill B by brace-bars D, the ends of which are jointed loosely to the said derrick and sill B, so that either sill may be adjusted without disturbing the other. In the present instance the brace-bars D are connected at their upper ends to the derrick by hooks D and eyes D and at their lower ends by screweyes D and staples or n-shaped bolts D*.

On the short sill B are erected rigid stand- Patent No. 390.390, dated Gotcha: 2, 1888.

(No model.)

ard-bearings E, to and between which, as a fulcrum, is pivoted one end of a re-enforced beam-lever, F, the other end of which is suspended by power-multiplying hoisting'tackle G, running over suitable pulley-blocks from the top and between the legs of the derrick G; and to metallic caps H, fixed to opposite ends of the bcam lever F, are rigidly secured the corresponding ends of a pair of stay-rods, I, which extend along the bottom of the beamlever, and between which and the said beamlever is arranged a spreader, J. A block, T, from which is suspended by a strap, T, a hook or fastening device, T, to which the stump is to be attached by chains or in any other suitable way, is mounted to slide lengthwise on the top of the lever F, and is connected by a rod, T, with a crank'arm, T", mounted to turn on the bearings E.

The construction and arrangement are such that the fastening'block T can be easily adjusted to any desired distance from the fulcrum of the lever, according to the resistance which the stump will probably offer, and by means of the hoisting-tackle G the free end of the lever can be raised so as to draw out the stump therewith,

The draw-strand K of the tackle G is arranged to run over a pulley, L, journaled to the top of the derrick, into the peripheral groove M of a compound drum, N, which groove is so adapted to the size of the strand K that the latter will, when the compound drum is rotated, be compelled to coil upon itself in a single layer, so that the effective force will decrease and the speed of winding increase as said groove becomes full. The compound drum N is also provided with another singlewidth groove, 0, in which is arranged to wind oppositely to the draw-strand K another rope, P, which is guided along the top of the sill A to the drum Q of a Windlass, Q, having a narrow groove, and which is arranged on the rear end of the sill A, and is provided with an operating-sweep, S, which may be turned by animal power.

The arrangement is such that the groove 0 of the compound drum N will be full and the ered for connection to the stump,and thus when the Windlass Q is worked to revolve the compound drum by unwinding the operating-rope groove M empty when the beam-lever is low 1 the latter will exert thcgreatest leverage on the drum and the draw-strand K, as before stated, the least, so that the greatest force will be exerted to draw the stump at starting, and as the stump is raised audits resistance conse quently decreased the compound drum will wind up the strand K, and thus draw the stump faster, the operating-rope P acting on a smaller effective diameter as it uncoils.

The stump-puller may be readily transported from place to place by attaching dral't devices to the front ends of both sills A B.

Having thus fully described myinvention, I claim as new and desire to secure by Let ters Patent- 1. In astump-puller, the combinati0n,with the main sill A,having a derrick,C, at its inner I end, the vertical compound drum N, having single-width grooves M O, the drum being of less diameter through the groove 0 than through groove M, and a horizontal drum, Q, at the outer end of the sill A, provided with a single-width groove, Q, of the windlassstrand P, approximately equal in diameter to the width 01' the grooves M Q and passing arouud'the same, and the hoisting or stumppulling strand K, connected to the top of the derrick, passing over pulleys thereon, thence around the groove 0 in a direction opposite to the strand P, said strand K being approximately equal in diameter to the width of the groove 0, and the stumplastener operated from the strand 1 substantially as set forth.

2. The combination, in a stumppuller, of

two sills, a derrick on one, a bearing on the 5 other, a beam-lever fulcrumed to said bearing, beani-lever-hoistingmechanism on the derrick, an adjustable block on the beam-lever, a strap, and a stump-attaching device sus pended from said block, substantially as set forth.

3. The combination, in a stump-puller, of sills having parallel runners, a derrick on one sill, a standard-bearing on the other sill, a draft-beam lever fulcrumed to the standardbearing, leverhoisting tackle on the derrick, and a brace jointed loosely at its respective ends to the top of the derrick and to the other sill, substantially as described.

4. The combinatiomwith the base and standards, of a crank-shaftjournaled in said standards, a vertically-swinging beam-lever fulcrumed on said shalt between the standards, a sliding block or carrier on the beam, a rod connecting the said block with the crank-shaft for moving it along the beam-lever, and a stump-fastener carried by said block, substantially as set forth.

JAMES M. MOORE.

Vitncsscs:

R. P. EVANS, H. N. SHERRILL.

Images