US1140409A - Stump-puller. - Google Patents

Description

F." R. SMITH.

STUMP FULLER.

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F. R. SMITH.

STUMP PULLER.

APPLICATION FILED OCT. 16, 1912.

1 EQQAQQQ Patented May 25, 1915.

2 SHEETSSHEET 2.

THE NORRIS HETERS CO), PHDTO-LITHO. WASHINGTON. D. C.

IINITD %TAES PATENT FFIQE.

FRANK B. SMITH, OF LA CRESCENT, MINNESOTA, ASSIGNOR T0 W. SMITH GRUBBER COMPANY, OF LA CRESCENT, MINNESOTA, A CORPORATION OF MINNESOTA.

STUIVIP-PULLER.

ie -ace.

Specification of Letters Patent.

Patented May 25, 1915.

Application filed October 16, 1912. Serial No. 726,049.

To all whom it may concern Be it known that I, FRANK B. SMITH, a citizen of the United States, residing at La Crescent, in the county of Houston and State of Minnesota, have invented a new and useful Stump-Puller, of which the following is a specification.

My invention relates to stump pullers and is designed to provide a strong, eflicient and durable machine for extracting stumps from the earth.

The object of my invention is to provide an improved method of anchoring the stump puller which will insure the equilibrium of the machine under the severe strain to which it is subjected. In the prior art the anchor rope or chain has been attached to the end of the base or platform of the stump puller and this permits a tipping of the machine when tension is applied to the pulling rope and has a tendency to disarrange the parts of the machine and induce breakage.

In the accompanying drawings Figure 1 is a top plan View of a stump puller embodying one form of my invention. Fig. 2 is a side elevation of the same. Fig. 3 is a front elevation, partially sectional, showing the arrangement of the parts and the construction of the axle. Fig. 4: is a fragmental sectional view taken on the line 4 4 of Fig. 3. Fig. 5 is a fragmental detail view showing the sweep-raising device. Fig. 6 is a detail View of the winding drum.

In the embodiment of my invention selected for illustration, there are four principal parts: a base or platform A, a winding drum B mounted thereon, a sweep-cap C mounted upon and keyed to the winding drum, and a sweep-raising device D which is used to throw the machine into and out of gear. The machine thus constituted may be mounted on a framework composed of two logs or timbers 1 connected at one end at an angle; and power is applied by means of a pole or sweep 2 inserted in the sweep-cap C and having a transverse aperture for the insertion of the shaft of the sweep-raising device hereinafter described.

The platform A supports an axle 3 rigidly connected therewith and adapted to receive the winding drum B. In the embodiment here shown this axle has a slope or incline on one side and on the opposite side, or the side upon which the strain falls, a flange 4 at the top of the axle which engages a corresponding internal flange 5 on the winding drum and serves to prevent the said drum from being lifted from the axle when in use. A slot 6 is provided in the inclined side of the axle and a key 6 is inserted after the winding drum is in place, forming a perpenducular side to correct the slope of the axle 3 and holding the winding drum in position. The winding drum B is provided with a concave surface upon which the pulling rope 7 is wound, and upon the flanges 7 embracing this concave surface are provided inwardly projecting rims 8 which are somewhat larger than one-half the diameter of the rope to be used, and which serve to prevent the rope from winding off the drum flange and to insure the laying of the successive coils of the rope in regular order on the drum and to prevent the crossing or piling up of the coils. The winding drum is fur-- ther provided on its under surface with ratchet teeth 9 adapted to engage the pawl 10 on the base A, and to hold the drum against unwinding when the power stops. Upon one side of the upper flange of the winding drum is a lug 11 inwardly curved to provide a clutch for the head of the pulling rope 7 The sweep-cap C is provided with a square seat or projection 12 which is adapted to engage a corresponding opening in the top of the winding drum and rigidly connect the sweep-cap with the said drum. The sweepcap is also provided with a transverse aperture through which the pole or sweep 2 is inserted for the application of power, and a central vertical aperture, for the insertion of the shaft of the sweep-raising device. At the end of the sweep-cap is provided a lug or lugs 13 for the purpose now to be described.

In the sweep-raising device C there is provided a shaft let which passes through the central vertical aperture in the sweepcap C and through the sweep f2, and rests upon the axle 3 or in a socket in said axle provided for that purpose. Rotatably mounted on the upper extremity of the shaft 14 is a clevis l5 perforated for the insertion of a bolt 16. A lever 17 is pivoted on the said bolt 16 and the other end of said lever is connected by the link 18 with the lug or lugs 13 on the sweep-cap. Rigidly mounted upon the clevis 15 is an arm 19 carrying on the side adjacent to the lever 17 a stop 20 for the purpose of holding said lever in a depressed position.

The base A is provided with curved flanges 21 adapted to support it upon the timbers 1. On the under side of the base A at a point somewhat beyond the middle of said base from the anchor end 21 is a notch or groove 22 adapted to engage an anchor rope 22*, which passes thence on both sides of the base, over the lateral flanges or shoulders 23 and is made fast to the anchor 23 On-the upper side of the base A near the anchor end 21 is a block 24 having on the side nearest the winding drum an incurved or. hooked surface adapted to engage an additional anchor rope 1f required. A boss 25 on the side of the base A supports the weighted pawl 10 which lies the opposite end of the base A and rigidly attached to the said base is a clutch wheel 26 having a hooked flange 27 adapted to hold the end of the pulling rope 7* when it is desired to obtain additional power by interposing a block pulley between the machine and the stump to be pulled.

In operation, the machine, having been placed in position with the end of the base carrying the anchor block 2a farthest from the stump or stumps to be pulled, is anchored by means of the rope 22 engaging the groove or notch 22 on the under side of the base and extending thence on either side of said base over the lateral flanges 23 and made fast to any suitable anchorage. When necessary, an additional anchorage rope may be employed by passing it around the anchor block 24. The pulling rope 7 is then attached by the use of a collar, or by any suitable means, to the hook 11. If desired the rope may be given one or two turns about the winding drum before making this connection. The pulling rope is then drawn taut and the free end made fast to the stump or stumps to be pulled and power is applied at the end of the sweep 2. .I/Vhen for any reason'the power ceases to be applied while the pullingrope is under tension, thepawl 10 engages one of the ratchet teeth 9 and prevents any backward or unwinding motion of the winding drum 13.

hen the work is finished and it is desired to throw the machine out of gear forthe purpose of unwinding the rope from the winding drum, this operation is easily and quickly performed by depressingthe lever 17 which raises the sweep-cap C, so that its square block 12 is lifted out of engagement with the corresponding depression in the winding drum. The lever 14: may then be locked in a depressed position by the stop 20. Upon releasing the pawl 10 the rope may now be unwound.

I do not desire to limit myself to the pre cise forms herein shown, since the proportions, form and manner of construction may be varied withoutdeparting frompthe spirit and substance of my invention, and'the-i'm proved features here shown and claimed may be separately used on other stump pulling machines than the embodiment herein shown.

I claim as my invention:

1. In a stump puller, in combination, a base having a'transv'erse groove on itsunder side beyond the center ofsaid base from the anchor end thereof; upper lateral flanges on said baseat the anchor end thereof and an anchor-rope passingthrough said groove and over saidflangesl j 2. In a stump puller, a basefhaving a transverse anchor-rope groove onitsunder side and between the center and'the-end opof said base and between the ends thereof,

said base having a transverse anchor-rope groove on the lower side of said base and beyond the center from the anchor end thereof; and upper lateral anchor-rope flanges on the anchor end thereof.

i. In a stump puller, in combination, a

base having a transverse anchor-rope groove on its under side and beyond the center from the anchor end of said base;fupper lateral flanges at the anchor end of said base; an

axle connected to the upper sideof said base; a wlndlng drum'on-sa1daxle; a pulling rope adapted to be wound on said drum,

and an anchor-rope adapted to engage'the said groove and the said lateral flanges to provide substantially parallel resistance 'to the pull of said pulling rope.

In testimony whereof I L flixmy signature in presence of two witnesses.

Witnesses:

CHAS. D. KOCH,

M. W. SMITH.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. 0.

FRANK B; SMITH.

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