US555977A - Stump-extractor - Google Patents

Description

(No Model.) 4 sfsheets-sneen 2.

J. o. SHARP.

A STUMP EXTRAGTOR, l No. 555,977. 4Pasemt'ed Mar. l10', 1896,

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(No Model.)l -3 Sheets-Sheet 3. J. C. SHARP.

STUMP EXTRAGTOR.-

No.` 555,977. Patented Ma.1'.10, 1896.

AN DREW B.GRAIIAM. PH0T0-LIT`M04 WASHINGTON. 0C.

llNiTEn STATES PATENT @E1-uen.

JOHN C. SHARP, OF DELAVAN, VISCONSN.

sTUM P-ExTRACTo R.

SPECIFICATION forming part of Letters Patent No. 555,977, dated March 10, 1896.

Application filed August 2, 1895. Serial No. 558,020. (No model.)

To all whom t may concern:

Be it known that l, JOHN C. SHARP, a citizen of the United States of America, residing at Delavan, in the county of Walworth and State of Wisconsin, have invented certain new and useful Improvements in Stump-EX- tractors, of which the following is a specification.

The object of my invention is to provide a cheap, handy and powerful machine for extracting stumps and trees; and my invention consists of certain details which are hereinafter fully described and claimed.

In the accompanying drawings, illustrating my invention, in which similar numerals and letters of reference indicate like parts, Figure l is a side elevation of my machine, showing it attached to an anchor-stump 36 and its draft-cable connected with a stump 4l to be extracted. rlhis view shows the clutch la engaged with the clutch member on top of the draft-lever socket to rotate the drum, the u pper clutch or ratchet-wheel being shown out of engagement and the draft-lever and the clutch-liftin g rod or wire being shown as shortcned and in broken section. Fig. 2 is a front elevation of my machine in central transverse section, showing the bolts, hand-lever, standard and antifriction-balls in whole form, the draft-lever and a part of the clutch-lifting mechanism being shown in broken section. Fig. 3 is a plan view of the machine, showing the draft-cable and draft-lever broken off and with a part of the draft-lever socket broken away to show the lever device for lifting the4 pawl out of engagement from the teeth on top of the drum. Fig. 4. is a view of a section of the top plate of the main frame and a section of the winding-drum with teeth on it and the pawl engaged with one of the said teeth. Fig. 5 is a plan view of the eccentric frame or casting at the outer end of the draft-lever, said draft-lever and the rod or wire for operating the clutch being shown as broken off. Fig. (l is a side elevation of the rear end of the draft-lever socket and a section of the top plate, with a part of said top plate broken away to show the arrangement of the pawllifting lever and pawl. This view also shows the cam as used for lifting the pawl out of engagement, the cam-bracket being partly in section to show the coil-spring and neck or upper part-of said cam. Fig. 7 is a side elevation of the cam that is shown in end view in Fig. 6. ln Figs. 3 and G the clutch-lifting mechanism is not shown.

The main frame of my machine may be made in any shape or form and of metal or such other material as may be best suited to the requirements of the case, and, as shown in this instance, it is composed of a bed-plate A, preferably mounted on and bolted to transverse supporting-runners l. Said bed-plate A has a circular opening 2 in it to receive and serve as a bearing for the lower hub, 3, of the vertically-mounted winding-drum B. The circular opening 2 may be closed at its bottom part, thus forming a cup or reservoir for containing oil for lubricating the bearing, and in said bottom part a circular groove 4 may be made as a track for the antifriction-balls 5, on which balls rests the lower end of the drum-hub Located above the bed-plate A is the top plate C, which may be supported and held securely in position by vertical hollow columns 6 with bolts @,passing upwardly through the bed-plate, columns and top plate. Said top plate C has a circular opening 7, through which projects the upper hub,8, of the drum B, and answers as a bearing for said drum-hub. Surrounding the said opening 7 is a collar D,

preferably cast on the top plate C, although said collar could be made of a separate piece and bolted or otherwise securely fastened to said top plate. The collar D projects upwardly from the top of the top plate to serve as a pivotal bearing fo'r the circular opening 9 in the draft-lever socket E,which draft-lever socket may in some cases have an inwardlyprojecting circular flange or lip l0, which flange should not, however, touch the drumhub to cause friction therewith, so that the drum may be reversed more easily when unwinding the draft-cable l1 therefrom. The draft-lever socket E has an opening l2 to receive the inner end of the draft-lever F, and said draft-lever socket E has on its top a circular row of teeth 13, thus answering as one member of a clutch for engagement with the teeth 13 of another clutch member 14, which latter clutch member is splined to slide verti- IOO cally on the upper hub, 8, of the drum into and out of engagement with the clutch member 14 on said draft-lever socket.

In some cases I provide teeth 15, preferably of the ratchet form shown, on the upper end of the clutch member 14 to engage with the teeth 16 of the ratchet-wheel or clutch member G, which is pivoted to turn loosely on the upper end of the. drum-hub 8. Said ratchet-wheel or clutch member G may have an opening 17 to receive a hand-lever 18. The clutch member 14 should have a circular groove 19 for the inwardly-projectin g lingers of the clutch-lifter II, which clutch-lifter, as shown, is pivoted in the standard 2O on the draft-lever socket E to rock sufficiently on its pivotal bearing to raise the clutch 14. Said clutch-lifter may have a rod or wire 21 attached to it and the other end of said rod or wire 21 connected to a ring 22, surrounding an eccentric K,which eccentric is mounted to turn a limited distance in its frame or casting 23 by manipulating the handle 24, to which the eccentric is secured.

The eccentric frame or casting 23 has two parallel side pieces 25, between which side pieces the eccentric is keyed on a shaft or trunnion on the handle 24, which shaft or trunnion turns in bearings in said side pieces. Said eccentric frame or casting 23 has an opening in it to receive the outer end of the draft-lever, to which it is bolted, and may also have cast on its end a ring or eye 26 as a convenient place for attachment of the horse or team. By moving the handle 24 the eccentric is thrown and either pulls on or slackens the wire 21, thus operating the clutch 14 as may be desired.

To prevent retrograde motion of the drum I mount a pawl L in an opening made therefor in the top plate C, which pawl is adapted to engage with the teeth 27 of a circular rack on the upper end of the drum. To raise the pawl 27 out of an engagement, so the drum may be turned backward and the draft-cable 11 unwound therefrom, I mount in another suitable opening in said top plate C a pawllifting lever N, which is pivoted on trunnions so as to rock slightly, and one of its ends 23 lits int-o an opening 29 in the top of the pawl, as shown, and by hanging a suitable weight (not shown) on the hooked part at the outer end of said pawl-lifting lever said end .is thereby depressed and the pawl is lifted out of engagement from the aforementioned drumteeth. To avoid the necessity of hanging said weight on and removingit from the pawllifting lever N, I preferably bolt or secure to the draft-lever socket a bracket 31, with a vertical opening in it to receive the upper part or neck 32 of a cam O, which cam may be rounded olf at its ends, as shown, to more easily mount the pawl-lifting lever N to depress it, and thus automatically lift the pawl out of engagement from the drum-teeth when the draft-lever in its turning brings said cam into operative connection with said pawl-lifting lever. A cam that is capable of yielding some or moving upwardly is preferable, in order that it may not exert a pressure that would injure the pawl-lifting lever at a time when the pawl is still bearing hard against the drum-tooth and not quite ready to come out of engagement easily, and to cause the cam to thus yield I could use a coil-spring 33 on the neck of the cam and inclosed in the cam-bracket 31, as shown.

In some cases I may not use the coil-spring 33, but have the sliding or yielding cam O of sufficient weight to properly depress though not injure the pawl-lifting lever. This automatic lifting of the pawl enables the driver to unwind the draft-cable from the drum at any time when the cam comes in contact with the pawl-liftinglever, and without leaving his horse or team to otherwise get the pawl out of engagement. The end of the draft-cable 11 may be attached to the drinn in any simple and suitable manner, but is preferably secured inside the shell of the drum, thence leading'outwardly on a curve into the spiral groove7 or to the face of the drum if a plain or non-grooved drum should be used.

To hold the draft-cable on the drum, I mount a roller or sleeve 34 on one of the supporting-columns 6, as shown, which sleeve holds the draft-cable on the drum, as well as affording a rolling contact for the draft-cable when winding on the drum. The other supporting-columns 6, as shown, may be set near enough to the drum to prevent the wound-up part' of the draft-cable from getting out of the groove when slackened. y

In operation the machine is usually anchored to a stump and may be connected therewith in any simple and suitable manner; but, as shown in this instance, an anchor-cable 35 is passed around the anchor-stump 36 and connected with a V-shaped anchor-bail P, which anchor-bail has an eye at each of its front ends, one of which eyes is placed between a pair of parallel lugs or jaws 37 on the rear part of the bed-plate, and the otherfeye is placed between a pair of parallel jaws 37 a on the rear part of the top plate, and are held in place by cross-pins 33 passing through openings therefor in said jaws, and also passing through the anchor-bail eyes. Cast on the front part of the top plate is another lug or jaw 38, with an opening 37b between it and the top-plate part proper, to receive the return end of the draft-cable when a pulley 3Q is used for increasing the power of the machine, as shown in the illustrations. Said outer or return end of the draft-cable is provided with an eye which is secured in said top-plate opening 37b by means of a cross-pin 33a. In pulling smaller stumps, requiring less power, the pulley 39 is not used and the draft-cable or its extension mayin such cases be connected directly to the stump to be eX- tracted. The pulley 39 has a clevis 40, to which is attached the extension-piece llfL of the draft-cable 11, said extension-piece 11"t IOO IIO

being connected to the stump il to be eX- traeted.

In a machine of this kind it is very essential to have the draft-lever socket pivotally connected with the machine, so as to turn independently of the drum, in order to let the horse or team step over the draft-cable when desired without being subject to the strain of rotating the drum when making a heavy pull. The pawl at such time prevents retrograde motion of the drum and thus holds the load until it is desired to reconnect the draft-lever to the drum to rotate it and finish the pull. It is also quite essential at times to have the draft-lever stand still and the drum turn freely or with but slight friction, in order to enable the operator to pull out the draft-cable by hand and thus unwind it from the drum without the aid of the horse or team; but if the draft-lever should be pivoted to turn on the hub or shaft of the drum the weight of the long draft-lever would exert so much of a pry on the drum-hub or shaft that it would bind the drum and require considerable power to reverse the motion of it to unwind the draftcable therefrom; and to have the draft-lever socket thus pivotally connected to the machine and at the same time exert no pry on the drum nor cause any friction therewith, I pivot the draft-lever socket to the top-plate collar, as is shown in the illustrations, the only connection of the draft-lever socket with the drum-hub being through the medium of the clutch member lll, and then only when it is in engagement with the teeth of the clutch member on top of the draft-lever socket to rotate the drum. It will be understood, also, that said clutch member I4 is thrown into engagement with its fellow member on the draftlever socket or disengaged therefrom at will by the driver, without leaving his horse or team, by simply manipulating the handle 24 of the eccentric K.

As it is very desirable at times to take up the slack in the draft-cable more speedily than it can be done by the horse or team turning the draft-lever, I provide the ratchetwheel or clutch member G to engage with the upper teeth 15 of the clutch member 14, which latter clutch member is always out of engagement with its fellow member on the draft-lever socket when in engagement with the ratchet-wheel or clutch member G, and when thus engaged with said ratchet-wheel or clutch member G the drum may then be rotated by manipulation of the hand-lever IS, and the slack in the draft-cable is thereby speedily taken up.

I may in some cases cut out vertical slots or openings in the top-plate collarD to lighten it, thus simply leaving a row of vertical parts or standards surrounding the drum-hub instead of the one entire circular piece or collar D.

As shown in the illustrations, the circular opening 9 of the draft-lever socket E for the tcp-plate collar D is located at its rear end,

with the end of the draftlever butting up against the wall of said circular opening; but in some cases I may attach the collar or part of said' draft-lever socket that has the said circular opening in it to the side of the box part of said draft-lever socket, at its center'or preferably at its front end, so as to get the weight of the draft-lever socket back of the center of the machine, thereby rendering the machine less liable to be tipped up by the long heavy draft-lever, the weight of the draft-lever being thus partly counterbalanced by the weight of the rearwardly-projecting part of the draft-lever socket.

Aside from the working of the special features of my machine which are hereinbefore explained, the machine is anchored and operated in a manner similar to other machines of this class.

Primarily said machine is intended for ein tracting stumps and trees, but may also be used for removing buildings, logs or any other heavy bodies to which a powerful pulling machine would be adapted. For obtaining still greater power Imay of course add to the machine such simple and suitable gears as may be required to accomplish the purpose.

Vhile I have shown and described the preferred form of my machine, I do not wish to be limited thereto, as many modifications thereof could be made without departing from the spirit of my invention.

Vhat I claim as my invention is l. In a stu1np-extractor, the combination of a draft wheel or drum with a draft-cable attached to it, a main frame with bearings in its top plate and bed -plal'e for the upper and lower hubs of said drum, a draft-lever-socket bearing or collar on said top plate projecting upwardly therefrom and surrounding the upper hub of the drum, a draft-lever socket with apart thereof surrounding said top-plate collar so as to make apivotal connection thereto, and of means for connecting said draft-lever socket to the upper hub of the drum to rotate the drum when desired, all substantially as shown and described and for the purpose set forth.

2. In a stump-extractor, the combination of a draft wheel or drum with a draft-cable attached to it, a main frame with bearings in its top plate and bedplate for the upper and lower hubs of said drum, a collar on said top plate projecting upwardly therefrom and surrounding the upper hub of the drum, a draftlever socket with a part thereof surrounding said top-plate collar so as to make a pivotal connection thereto, an inwardly-projecting circular flange on the draft-lever socket and said flange bearing upon the top of said collar, and of means for connecting said draft-lever socket to the upper hub of the drum to rotate said drum when desired, all substantially as shown and described and for the purpose set forth.

3. In a stump-extractor, the combination of a draft wheel or drum with a draft-cable at- IOO IIO

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tached to it, a main frame with bearings in its top plate and bed-plate for the upper and lower hubs of said drum, a collar on said top plate projecting upwardly therefrom and surrounding the upper hub of the drum, a draftlever socket with a part thereof surrounding said top-plate collar so as to make a pivotal connection thereto, and of one member of a toothed clutch splined to slide on said upper drum-hub into engagement with the teeth of another clutch member made on said draftlever socket, to rotate the drum when desired, all substantially as shown and described and for the purpose set forth.

4. In a stump-extractor, the combination of a draft wheel or drum with a draft-cable attached to it, a main frame with bearings in its top plate and bed-plate for the upper and lower hubs of'said drum, a collar on said top plate projecting upwardly therefrom and surrounding the upper hub of the drum, a draftlever socket with a part thereof surrounding said top-plate collar so as to make a pivotal connection thereto, an inwardly-projecting circular flange on the draft-lever socket, and said flange bearing on the top of the top-plate collar, and of one member of a toothed clutch splined to slide on the upper drum-hub into engagement with the teeth of another clutch member made on said draft-lever socket, to

, rotate the drum when desired, all substantially as shown and described and for the purpose set forth.

5. In a stump-extractor, the combination of a draft wheel or drum with a draft-cable attached to it, a main frame with bearings in its top plate and bed-plate for the upper and lower hubs of said drum, a collar on said top plate projecting upwardly therefrom and surrounding the upper hub of the drum, a draftlever socket Witha part thereof surrounding said top-plate collar so as to make a pivotal connection thereto, a clutch member splined on the upper drum-hub with teeth on the lower end of said member to engage with the teeth of another clutch member made on said draftlever socket, teeth on the upper end of said clutch member first above mentioned to engage with the teeth of another clutch member pivoted on said drum-hub, and a hand-lever attached to the latter or upper clutch member, all substantially as shown and described and for the purpose set forth.

6. In a stump-extractor, the combination of a draft wheel or drum with a draft-cable attached to it, a main frame with bearings in its top plate and bed-plate for the upper and lower hubs of said drum, a collar on said top plate projecting upwardly therefrom and surrounding the upper hub of the drum, adraftlever socket with a part thereof surrounding said top-plate collar so as to make a pivotal connection thereto, one member of a toothed clutch splined to slide on the upper drumhub into engagement with the teeth of another clutch member made on said draft-lever socket, and of a device on the draft-lever socket for operating said sliding clutch `member, all substantially as shown and described and for the purpose set forth.

7. In a stump-extractor, the combination of a draft wheel or drum with a draft-cable attached to it, a main frame with bearings in its top plate and bed-plate for the upper and lower hubs of said drum, a collar on said top plate projecting upwardly therefrom and surrounding the upper hub of the drum, a draftlever socket with a part thereof surrounding said top-plate collar so as to make a pivotal connection thereto, one member of a toothed clutch splined to slide on the upper hub of the drum into engagement with the teeth of another clutch member made on the draft-lever socket, a device on said draft-lever socket for operating said sliding clutch member, a wire or connection attached to said device and also attached to an eccentric mounted on the outer part of the draft-lever, and an operating lever or handle attached to said eccentric, all substantially as shown and described and for the purpose set forth.

8. In a stump-extractor, the combination of a draft wheel or drum with a draft-cable attached to it, a main frame with bearings in its top plate and bed-plate for the upper and lower hubs of said drum, a collar on said top plate projecting upwardly therefrom and surrounding the upperhub of the drum, a draftlever socket with a part thereof surrounding said top-plate collar so as to make a pivotal connection thereto, means for connecting said draft-lever socket to the upper drum-hub to rotate said drum when desired, and of a pawl mounted on the top plate to engagewith teeth set on the upper end of the drum, for preventing rctrograde motion thereof, all substantially as shown and described and for the purpose set forth.

9. In a stump-extractor, the combination of a draft wheel or drum with a draft-cable attached to it, a d raft-lever pivotally connected to said machine, a suitable clutch device for connecting said draft-lever to said drum, so as to rotate the same when desired, a clutchlifting device suitably located on the machine, and said clutch-lifting device operated by means of a wire or connection attached thereto, and said wire also attached to an eccentric suitably mounted in a frame or casting located on the outer part of the draft-lever, a handle or lever connected to said eccentric for operating the same, to pull said wire and of an eye as a means of connection for the horse or team, on said eccentric frame or casting, all substantially as shown and described and for the purpose set forth.

l0. In a stump-extractor, the combination of a draft wheel or drum with a draft-cable attached to it, a main frame, a draft-lever suitably connected to said drum to rotate the same, a suitable pawl or ratchet device on the drum and main frame of said machine for preventing retrograde motion of the drum when desired, and of cam mechanism suit- IOO IIO

ably located on the machine so as to connect With and automatically lift and hold said paWl out of engagement from its engaging teeth when the draft-lever reaches a fixed point in its turning, all substantially as shown and described and for the purpose set forth.

l1. In a stump-extractor, the combination of a draft Wheel or drum with a draft-cable attached to it, a main frame with a pawl mounted on the top plate thereof, and said paWl engaging With teeth on the upper end of the drum, a draft-lever socket pivotally connected to said machine, means for connecting said draft-lever socket to the drum so as to rotate the same, of a cam suitably mounted on a rotating part of the machine, and said cam adapted to engage Wit-h a suitable part connected to said paWl and automatically lift and hold the paWl out of engagement from its engaging-teeth When the draft-lever of the machine reaches a fixed point in its turning, all substantially as shown and described and for the purpose set forth.

l2. In a stump-extractor, the combination of a main frame and a draft Wheel or drum mounted to rotate therein, a draft-cable attached to the drum, a draft-lever suitably connected to the drum to rotate the same, a suitable paWl or ratchet device on the drum and main frame to prevent retrograde motion of the drum when desired, and 0f a yielding cam suitably mounted on the machine so as to connect with and automatically lift and hold said paWl out of engagement from its engaging teeth When the draft-lever reaches a fixed point in its turning, all substantially as shown and described and for the purpose set forth.

l13, In a stump-extractor, the combination of a main frame With a draft Wheel or drum mounted to rotate therein, a draft-cable attached to said drum, a paWl mounted on the top plate of said main frame and adapted to engage With teeth on the upper end of the drum to prevent retrograde motion of the drum, a draft-lever socket pivotally connected to said machine, means for connecting the draft-lever socket to said drum to rotate the same when desired, of a yielding cam suitably located on a rotating part of said machine, and said cam adapted to engage With a suitable part connected to said pawl, so as to automatically lift and hold the pawl out of an engagement from its engaging teeth when the draft-lever has reached a fixed point in its turning, all substantially as shown and described and for the purpose set forth.

14. In a stump-extractor, the combination' of a main frame with a draft Wheel or drum mounted to rotate therein, a draft-cable attached to said drum, a paWl mounted on the top plate of said main frame and adapted to engage With teeth on the drum, to prevent retrograde motion thereof, a draft-lever socket suitably connected to said drum, to rotate it, When desired, a paivl-lifting lever pivoted on said top plate and suitably connected to said paWl to lift the same, and of a cam device suitably located on the lever-socket of saidmachine and adapted to automatically engage With said pawllifting lever and cause it to lift said pawl out of engagement from its engaging teeth, When the draft-lever has reached a fixed point in its turning, all substantially as shown and described and for the purpose set forth.

l5. In a stump-extractor, the combination of a main frame With a draft Wheel or drum mounted to rotate therein, a draft-cable attached to said drum, a draft-lever socket pivotally connected to said machine, means for connecting said draft-lever socket to the drum to rotate the same when desired, a pawl mounted on the top plate of said main frame, and adapted to engage With teeth on the drum, to prevent retrograde motion thereof When desired, a pavvl-lifting lever pivoted on said top plate and suitably connected to said paWl to lift the same, of a yielding cam device suitably located on said draft-lever socket and adapted to automatically engage With said paWl-lifting lever and cause it to lift said paWl out of engagement from its engaging teeth when the draft-lever has reached a fixed point in its turning, all substantially as shown and described and for the purpose set forth.

16. In a stump-extractor, the combination of a main frame With a Winding-drum mounted to rotate therein, a draft-cable attached to said drum, a collar on the top plate of said main frame projecting upwardly therefrom and surrounding the upper hub, of said drum, a draft-lever socket with a part thereof surrounding said top-plate collar so as t-o make a pivotal connection thereto, means for connecting said draft-lever socket to the upper drum-hub,V to rotate the drum when desired and of antifriction-balls under the lower end of the lower hub of the drum, all substantially as shown and described and for the purpose set forth.

JOI-IN C. SHARP.

Witnesses:

CHAs. H. RANDoLrH, SAMUEL CALHOUN.

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