US762233A

US762233A - Stump-puller.

Info

Publication number: US762233A
Application number: US17724503A
Authority: US
Inventors: Thomas E Ewer
Original assignee: BENJAMIN J KOGE
Current assignee: BENJAMIN J KOGE
Priority date: 1903-10-16
Filing date: 1903-10-16
Publication date: 1904-06-07
Anticipated expiration: 1921-06-07

Description

PATENTED JUNE 7, 1904.

T. B. EWER. STUMP FULLER.

APPLICATION FILED 00T.16, 1903.

N0 MODEL.

THOMAS E. EIVER, OF MARSHFIELD, WISCONSIN, ASSIGNOR OF ONE-HALF UNITED STATES Patented June '7, 1904.

PATENT OFFICE.

TO BENJAMIN J. KOGE, OF MILIVAUKEE, IVISOONSIN.

STUMP-PULLER.

SPECIFICATION forming part of Letters Patent No. 762,233, dated June '7, 1904. Application filed October 16, 1903. Serial No. 177.245. (No model.)

To aZZ whom/ it may concern:

Be it known that I, THoMAs E. Ewen, residing at Marshfield, in the county of Wood and State of Wisconsin, have invented a new and useful Improvement in Stump-Pullers, of which the following is a description, reference being had to the accompanying drawings, which are a part of this specification.

My invention relates to certain new and useful improvements in stump-pullers and similar devices, and has for its object to improve upon the general structure and operation of such devices.

Another object of this invention is to provide means for releasing the engaging parts of a ratchet-bar-lifting element.

With the above and other objects in view my invention consists in the devices and parts or their equivalents, as hereinafter set forth.

'Referring to the accompanying drawings, forming a part hereof, and in which like characters of reference indicate the same parts in the several views, Figure 1 is a front elevation of a stump-puller embodying my invention, the supporting-frame being sectioned. Fig. 2 is a side view thereof with the supportingframe in section. Fig. 3 is an enlarged sectional View of the casing showing the ratchetbar engagements. Fig. 4 is a transverse section through the casing on the line 4 4 of Fig. 1, and Fig. 5 is a transverse section through the casing on the line 5 5 of Fig. 1.

In the drawings, 6 represents a supportingframe, which may be of any suitableconstruction, but is preferably of the construction shown, in which two pairs of inclined legs are connected at their lower ends by footboards and at their upper ends by a crown-plate, said pairs being joined by side braces.

A casing 7 of any desirable material is suspended within the supporting-frame by means of a chain 8, connecting the pair of upwardlyextending loops 9 of said casing with a de-' pending eyebolt 10, secured to the crownplate of the supporting-frame.

A rack-bar 11, having oppositely-disposed ratchet-teeth 12 on its sides, is vertically slidable within the casing '7 and is guided in its movements by the upper and lower pairs of the teeth of the rack-bar by springs 15, suitably connected Within the casing.

Release-levers 16 are pivoted in the opening 17 in the front of the casing 7, with their inner ends loosely engaging perforations 18 in the pawls 14, and are adapted to force said pawls outwardly out of engagement with the teeth of the rack-bar when the outer ends of said release-levers are pressed together.

Operating-levers 19 are pivoted in side open ings 20 of the casing and carry at their inner ends upwardly-extending pivoted dogs 21, which are pressed upon by the other ends of springs 15, so as to engage the ratchet-teeth 12 of the rack-bar. The inner edges of the dogs 21 are channeled to provide side flanges 22 to engage the faces of the rack-bar 11 and guide the dogs thereon.

Each operating-lever 19 has a depending arm 23, carrying a cross-pin 2 1 to engage the lower bifurcated end of a trip-frame 25, which is pivotally connected at its upper end by a loose connection 26 or any other suitable means to the upper end of the casing 7 These trip-frames are pivoted to each side of the casing 7 and are preferably of an H shape, with the two longitudinal members and a cross member, and each frame has connected to it on one of its longitudinal members a sliding rod 27, having a bearing in perforations in the casing, extending across the open spaces in the front and rear faces of said casing and provided with engaging blocks 28, located between the side flanges 22 of the dogs 21. One of the trip-frames 25 on being swung inwardly by the engagement of the cross-pin 24E therewith causes its sliding rod 27 to engage its block 28 with the dog 21 on the other side of the casing and force said dog out of engagement with the teeth of the rack-bar.

At the lower end of the rack-bar 11 is connected a chain 29, carrying a swivel-hook pulley 30 and extending upwardly to engage with one of the side braces or any other elevated portion of the supporting-frame.

To the lower end of the casing 7 are connected side bail-loops 31, similar to loops 9 at the upper end of the casing.

The operation of the device as now described is as follows: The supporting-frame being in the position shown, with the casing suspended therefrom, the hook of pulley 30 is engaged in the usual chain fastened about the stump, and the operating-levers 19 are swung on their pivots, first upwardly to lower their dogs 21 into engagement with ratchet-teeth 12 and then downwardly, lifting said dogs and the rack-bar until the pawls 14 spring into engagement with new teeth of the rackbar and relieve said operating-levers of the weight of the load being lifted. During the initial movements of the rack-bar, when the greatest resistance is being overcome in tearing the stump from the ground, the dogs 21 engage the upper ratchet-teeth 12, which are oppositely disposed, so that the two operating-levers may be worked together until the alternate arrangement of the teeth is reached, where it is estimated the resistance to be overcome will be less, the stump having left the ground, and then the operating-levers are preferably swung successively. To lower the stump, the pawls 14c are released from engagement with the ratchet-teeth by pressing the outer ends of the release-levers 16 together, and the weight of the load will be supported entirely by the dogs 21. Then that operating-lever which has its dog in engagement with one of the alternating teeth is pressed downward until its cross-pin 24 engages the trip-frame 25 and forces the other dog out of engagement with the ratchet-teeth, and then the other operating-lever is lowered as far as possible without engaging its crosspin with the trip-frame, in which position its dog will stand nearly opposite the other dog,

' and therefore on a space between its ratchetteeth. The first operating-lever is now raised, allowing the rack-bar to lower, with its load, until the dog of the second operating-lever engages with the next tooth, and then the said second operating-lever is pressed downwardly until its cross-pin engages the tripframe and releases the dog of the first operating-lever and enables said first operatinglever to be swung sufiiciently to pass its dog above the tooth just released without again engaging its cross-pin with the trip-frame, so that when the second operating-lever is again raised the rack-bar, with its load, is lowered another step until the dog of the second operating-lever engages the next tooth. To drop the rack-bar to its original or lowermost position, it is only necessary to lower both the operating-levers, so that each throws the dog of the other out of engagement with the teeth of the rack-bar and at the same time release the pawls 14:, when said rack-bar is free to drop.

The function of the bail pulley-loops 31 is to serve as a means for securing other pulleys for a multiple block and tackle connection when increased power is required.

\Vhat 1 claim as my invention is 1. In a device of the character described, a casing, means for supporting the casing, a rack-bar having teeth on opposite sides, pawls on the casing engaging the teeth of the rackbar, oppositely-disposed operating-levers pivoted to the casing, dogs carried by the operating-levers engaging the teeth of the rackbar, and springs secured to the casing bearing at one end on the pawls and bearing at their other end on the dogs.

2. In a device of the character described, a casing, means for supporting the casing, a rack-bar slidable in the casing, teeth on opposite sides of the rack-bar in alternate arrangement, pawls in the casing engaging the teeth of the rack-bar, oppositely-disposed operating-levers pivoted to the casing, and dogs carried by the operating-levers engaging the teeth of the rack-bar.

3. In a device of the character described, a casing, means for supporting the casing, a rack-bar slidable in the casing, teeth on opposite sides of the rack-bar being arranged opposite each other at one portion of the rackbar and in alternate arrangement at another part of the rack-bar, oppositely-disposed operating-levers pivoted to the casing, and dogs carried by the operating-levers engaging the teeth of the rack-bar.

4. In a device of the character described, a casing, means for supporting the casing, a rack-bar having teeth on opposite sides, pawls in the casing engaging the teeth of the rack bar, oppositely-disposed operating-levers pivoted to the casing, dogs carried by the 0per ating-levers engaging the teeth of the rackbar, and a connection between each operatinglever and the dog of the other operating-lever by which the dog is released on an extreme movement of the operating-lever.

5. In a device of the character described, a casing, means for supporting the casing, a rack-bar having teeth on opposite sides, pawls in the casing engaging the teeth of the rackbar, oppositely-disposed operating-levers pivoted to the casing, dogs carried by the operating-levers engaging the teeth .of the rack bar, trip-frames pivoted to the casing and adapted to be engaged by the operating-levers, and sliding rods mounted in the casing and having connection with the dog of each operatinglever and the trip-frame of the other operating-lever.

6. In a device of the character described, a casing, a rack-bar having teeth on opposite sides, pawls in the casing engaging the teeth of the rack-bar, oppositely-disposed operating-levers pivoted to the casing, a tripframe for each operating-lever pivoted to the casing and adapted to be engaged by said operatinglever, a rod slidable in the casing and having bar, trip-frames pivoted to the casing, arms on the operating-levers, cross-pins carried by the 5 arms and adapted to engage the trip-frames, rods slidable in the casing and connected with the trip-frames, and blocks on the slidable rods located between the side flanges of the dogs.

In testimony whereof I afiiX my signature in 20 presence of two witnesses.

THOMAS E. EWER.

Witnesses:

R. E. ANDREWS, JOHN BEER.