US107906A - Improvement in stump-extractors - Google Patents

Description

muy.

N.PETERS. FHDTD-LITHOGRAPHER. WASHINGTON D C gTo all whom 'it niej/,concern v y Be itknown that I, JOHNSON HIGGINS, of Fri-end- HYIGGINS, 0F "r'RiENDs'niP, NEW Youri I Letters reattivo. 107,966, dated october 4, 1870.

" kuurRovlaiv'uaN-'r IN sjruMP-EXTRAcToRs.

" ThelSchetule referred to in these Letters Patent and makingv part of the same.

ship, in `thefcounty of Allegany and State of New York, have made certain new: and useful Improvements in Stump-Extractors Iandl do hereby declare fthe following to bea full, clear, and exact description `ofthesamereference being had to the accompanying `drawing `brming part of thisl specification, in whichlif, f

Figure lis a vertical scctionof the stump-extractor Figure 2 is afrearelevation of the same.'

corresponding parts. i v i l i My` invention has foritsfobject to improve the cou- `Similar `lettersof' reference `in the drawing indicate v l struction. of tl1estumpextractorfor which Letters l 'Patent of theUnitedStates were granted to me outhe 8th day of March', A. l). 1870, whereby the same is` l, `made more durable and efficientinoperation. i FIn the accompanying drawingi A is atriangular frame, supported in an upright position `by means of the nchned-braccs B, whose 4connection with `the` framej ris strengthened by the blocksjor bars 0,-'and tie-bolts D.

i l Eiisthe operating or draft-lever, attached `at its `innerend,.by,ailexible connection, to a cross-bar, F, `of theiframe, andprovided atI its outer end-with a pulley,` Garo un,d (which the draft-rope or chain H` ipfasses,y toa clevis,uI, secured to the' apex of the tri- Theiweightftofbefliftd` isattached by a hook, J,

`to tlieunderyside of the operating lever, near its fulcruni/and, whenypolwer is applied 'to the rope or i chain,"theJeverfEisfnctraised materially'at-its outer end,butthegupperyend-of Xthe triangular frame is l,drawn `forwardluntil it assumes aihorizontal position,

. ornearlyso, turning upon the inclinedbraces C. l 'lheresistauceoiered bythestnmpbrweight to be lifted holds jtheouter .end ot' th'elever lldown, fbut the power applied-pulls theupper enfl ofgthe 'triangular-frame forward,,therebymoving forward the `lever E audits fulcruin, `and `increasing the distance hetweenth'epoint` of attachment of the weight to thelever,iand' the pointofrest for the weight upon the groundJr'It is therefore apparent that this in- {crcase of distanceraises `theweight or stump, as rcgquired` v f f' L :n` `In order to obtaina longer pull, the frame A may .beleaned to the'rrear, restingiupon the. ends of the inclined bars.' By vthis arrangement, the chain at-` :tachedto thestumpistightenedyand the latterloos-V` enedqsomewhat the braces O. n f v This construction andoperation are fullyshowu inmy pateutreferredfto, and theipresent `invention con- I `plied from' the rear of theA bar K,

,,betbrethefranje begins to turn upon By this arrangement the frame is strengthened, in-

asmuch as the strain upon the cross-bar draws it against the rear side of the frame, instead of drawing it from the front side, as in my former case.Y It cannot, therefore, yield, nor be torn from its fastenings under the powerful leverage incident to the machine.

Instead of employing an eye-bolt, passing through thebar 'F to receive the hook L upon the end of the operating-lever, I" place a staple, M, around the vertical bar K, to'receive the hook, and connect its ends in'rear of the bar by means of a strong metal plate, N, and the nuts O. f i

Owing to this construction, the bar F, is not weakened by the passage of' an eye-bolt through it, and the connection of the lever with the frame is strengthened. naturally from the fact that the strain upon Vthe, lever, when the machine` is in operation, is ap through this bar and the cross-bar F.

lo still furtherstrengthen the bar F, itsA ends are secured in place by the metal strips W affixed tothe rear side oi' the frame, as shown. Y

of strengthening the connection of these two bars. rllflie hook J, tofwhich the lifting-rope or chain is attached, is connected to the band X upon thelever VE by means of a link, R, to prevent the hook from being broken when in operation. h l

The band X is `adapted to be moved upon the lever to change the position/of the hook with relation to therfulcrunl of the lever, for the purpose of adjusting the leverage to diiierent weights.v i

It will be observed that the frame A and lever E 'l are brackets attached to the braces B, carrying small wheels, U; and Y V is a caster-wheel aixed to the outer end of the operating lever.

.These wheels permit the trausportation'of the inachine from place to place when the frame is -turned l down upon the lever, aswill be readily understood.v

f The caster-wheel V is employed, instead of a wheel having a iixed axle,'as shown in luy-patent referred and distributed to, for the purpose of allowing the machine to turn readily, during its removal, from one point to another.

Having thus described my invention,

What I claim as new therein, and desire to secure by Letters Patent, is

1. The frame A, constructed with the bars F and K, as herein described, for the purpose specified.

2. The staple M and metal plate N, arranged with relation to the bars F and K, to receive the hook of Ehe lever E, as herein described, for the purpose speci- 3. The pulley or block S, in connection with the draft-rope or chain H, arranged to operate the lever E and frame A, as herein described, for the purpose specified. v

4. The caster-wheel V and adjustable hooks J, in combination with the lever E, substantially as described, for the purpose specified. v Y

Y JOHNSON HIGGINS.

Vitnesses: Y

G. C. LEWIS,

D. L. CORBIN.

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