US227087A - Stu m p- extr acto r - Google Patents

Description

W. H. WRIGHT. Stump-Extractor.

No. 227,087, Patented April 27, 1880.

INVENTOR:

ATTORNEYS.

WITNESSES N. PETERS, PNOTO-LITMOGRAPNER. WASHINGTON. D. C.

UNITED STATES PATENT OFFICE.

WILLIAM H. WRIGHT, or BELMONT, NEW HAMPSHIRE.

STU M P-EXT RACTO R.

SPEOIFICATIDN forming part of Letters Patent No. 227,087, dated April 27, 1880.

Application filed November 28, 1879.

To all whom it may concern Be it known that I, WILLIAM H. WRIGHT, of Belmont, in the county of Belknap and State of New Hampshire, have invented a new and Improved Stump-Extractor, of which the following is a specification.

The object of my invention is to furnish an efficient and powerful implement for raising stumps, roots, rocks, and other objects.

The invention consists of a vertical U shaped frame in which moves a ratchet-bar, said frame being provided with a lever for lifting the ratchet-bar, a latch for retaining the bar at the point to which it is lifted by the lever, and springs for throwing the latch in and out of engagement with the ratchet-bar.

In the accompanying drawings, Figure 1 is a side elevation of my improvement. Fig. 2 is a vertical section of my improvement, taken on line :0 w of Fig. 1. Fig. 3 is across-section taken on line 3 y of Fig. 1. Fig. 4 is a side elevation of part of the extractor, showing the spring for throwing the catch into engagement with the ratchet-bar; and Fig. 5 is a cross-section of the extractor, taken on line 2 z of Fig. 1.

Similar letters of reference indicate corresponding parts.

Referring to the drawings, A A are the side bars of the frame of my extractor, made of one piece bent to the form of a U, or in any other suitable manner. 0 C and O O are cross-plates bolted to the sides of side bars, A A. From cross-bars O O depend links a a.

D is a lever having its weight end b provided with a slot, 0. The lever is applied by passing one of the side bars, A, in the slot 0 and pivoting two jaws, d (1, to the links a a. Beyond the fulcrum of the lever, in the links a a, the jaws d (Z are joined by a bolt, e.

E is the latch, provided with slots ff. The latch is placed on top of cross-bars O O, with the side bars, A, in the slots f f. A spring, g, has its lower end, it, placed in a hole, 1', of latch E. This spring 9 draws latch E in the direction of arrow 1. On the opposite side from spring 9 is pivoted a spring-lever, F, one arm, j, whereof projects toward lever D, while the other arm, j, hangs down by the latch E.

When lever F is in the position it occupies in Fig. 1, with its arm j alongside of latch E, it has no effect on said latch; but when moved into the position indicated by the dotted lines, with its lower arm, j, against the end 7c of latch E, and the upper arm, j, is struck by lever D, the arm j throws the latch E in the direction of arrow 2.

Gis aratchet-bar, which is passed up in the space 1 between said bars A and cross-bars G 0. When the bar G is moved up, the teeth m bear against the cross-bar n of the latch and force the latch E back out of the way in the direction of arrow 2; but as soon as a tooth passes the said bar a spring 9 draws the latch in the direction of arrow 1 under the tooth and holds the bar up.

The mode of operating the extractor is as follows: The extractor is placed over the object to be extracted, and the ratchet-bar G is allowed to slip down as far as may he necessary to connect it with the said object. The lever D is now operated so as to cause the bolt 6 to engage the teeth at of the ratchet and raise the bar G. As said bar is raised each tooth m pushes the latch back in the direction of arrow 2, and when said tooth passes bar at spring 9 draws the latch in the direction of arrow 1, so that the bar a will pass under the tooth and hold the bar G in the position to which it is raised, while the lever is operated to engage a tooth lower down on the bar.

When the bar G is to be lowered to take a new hold, or for any other purpose, the springlever F is arranged so that the arm j will bear against the end It of the latch. The lever D is then operated so that its end I) will strike the arm j of lever F and move the lever so that its arm j will throw the latch in the direction of arrow 2 and the bar u out of engagement with the teeth of the ratchet-bar G. Now, by lowering end b slightly the bolt 0 will be moved back away from teeth m, and the bar G will be allowed to drop down to the position required.

Having thus fully described my invention,

I claim as new and desire to secure by Let- 3. In combination with the ratchet-bar G, ters Patentlatch E, and lever D, the spring-lever F, con- 1. As an improvement in stump-extractors, structed and operated in the manner substanthe frame composed of side, bars, A, and tially as described. 5 cross-bars O O, in combination with the lever D, latch E, and ratchet-bar G, as and for the WILLIAM H. WRIGHT. purpose substantially as described.

2. In combination with the ratchet-bar Gr Witnesses: and latch E, the spring 9, substantially as de- GEO. F. LEAVITT, I0 scribed. H. E. MACE. .1

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