US326310A

US326310A - Stump-puller

Info

Publication number: US326310A
Authority: US
Publication date: 1885-09-15
Anticipated expiration: 1902-09-15

Description

(No Model.)

J. L. MARTIN.

STUMP PULLER. No. 326,310. Panten'dl Sept'. 15, 188.5.

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BY JLM/ww I ATTORNEYS h., ll -JiMr @WMM 111! j m Cj WITNBSSES WM'Q 'I yUNITED vSTATES PATENT OFFICE.

" JAMES L. MARTIN, `DEcKEEs POINT, PENNSYLVANIA.

STU M P-PULLE'R.

.SPECIFICATION forming part of Letters Patent No. 326,310, dated September 15,1885.

Application filed July Q0, 1885. (No model.)

To all whom it 'may concern: y Beit known that I, JAMES L. MARTIN, of Deckers Point, in the county of Indiana and the State of Pennsylvania, have invented a new and Improved Stump-Puller, of Whichthe following is a full, clear, and exact description.

My invention relates to that class of apparatus used for extracting stumps and eleva-ting rocks; and the invention consists in certain novel features of construction and combinations of parts,as will be hereinafterdescribed and specifically 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 all the figures.

Figure 1 is a perspective view of my improved form of stump-puller. Fig. 2 is an enlarged view of a portion of the lifting-bar and one of the grips, the grip being shown in section; and Fig. 3 is a plan view of the bar and one of the grips.

The main supportingframe of my stumppuller is composed of two converging standards, A A, that are united at their upper ends and braced by a bar, B. In uniting the upper ends of the standards A A, I prefer to bevel off the upper part of the inner surfaces of the Standards, so that when the two beveled faces are brought in contact, so as to rest the one against the other, a proper inclination will be given to the standards.

The outer faces of the standards are cut away to forni the perpendicular post C, and upon this post C, I hang ,the suspending-hook I), which is made with a large eye, d, that encircles the post C.

A lever, E, is suspended from the hook D, by the link a, and the outer end of this lever Eis connected to the manipulating-lever F by the connecting-link b, which is pivoted to both of the levers named.

The inner end of the lever F is pivotally connected with two brace-rods, c c, that are carried by the standards A A, so that as the manipulating-lever F is depressed the short arrn c of the lever E will be raised.

A grip, G, is carried by the arrn e of the lever E, being connected thereto by a link, f, which rests in one of the two or more notches M, formed on the upper side of thc arm c. This grip G, which supports the lifting-bar K, is ofpeculiar.construction, as will be seen by an inspection of Figs. 2 and 3. The. slot g, formed in the grip and through which the bar K passes, is not rectangular in cross-section, being morein the form of a rhomboid, although the lower part of the outer face of the slot is formed so as to be at about rightangles with the underside of the grip, so that.

the grip is really formed with a shoulder, o, that projects into the slot g, and forms abearing or gripping face against which the bar K is pressed.

A steel plug, h, is dovetailed into the upper side of the grip in position so that one of its exposed faces will constitute a portion of the inner wall ofthe slot g, the idea being to pro vide the grip with a steel gripping-edge. The grip G is the lifting-grip; but to hold the bar K inposition after it has been raised by the grip G, I provide a second grip, H, that is arranged below the grip G and supported by a link, p, that engages with the hook D.

In operation the stump is connected to the bar K by means of a chain, which is inserted through the eye m, formed near the lower end of the bar, and the manipulatinglever F depressed, which movement of the lever, as before stated, will raise the bar K. The lever F, having been depressed to its full extent, is in turn raised, and the grip G will thereby be released from its binding frictional contact with the bar K; but the weight of the bar and the stump secured thereto will be at once thrown upon the grip H, by which it -Willbe Securely held until the motion of the lever F is again changed and the lever is depressed, when, as before, the upper edge of the steel plug h' will be pressed against the bar K, which will be held in a firm grip between the shoulder o and the edge ofthe plug h.

When the inner ends of the grips G and H are not raised by their connecting-links, it will be seen that there will be no pressure upon the bar K bythe edge of the plug h, and it will also be seen that by slightly tilting the bar so that its sides will be more nearly parallel with the end walls of the slot g the bar may be freely moved in either direction within the slots g of the grips G and H.

IOO

Having thus fully described myinvention, I claim as new and desire to secure byLetters Patenti l. In a stump-puller, the combination, with the supporting-frame, of a hook, D, lever E, and grip H, and connecting-links, a grip, G,

connected to the lever E by a link, f, a Inanipulatingdever, F, connected to the lever E by alink, b, and a lifting-bar,K, substantially as described. f

2. The herein-described grip, provided with the steel plug h, and the slot g, and the shoulder o, substantially as described.

3.- In afstump-pullen'the combination of.

the lfollowing'- elements: supporting frame, x 5

hook D, leversE F, links a, b, f, and p, grips G and H, formed with shoulders o, and steel plugs h, and a bar, K, substantially as set forth. y v

JAMES L. MARTIN. Witnesses:

J. C. MoGREGoR, T. C. RAMEY.