US1194214A - Aetd david e - Google Patents

Description

J. L. & D. E. MORRIS.

STUMP EXTRACTOR. APPLICATION FILED JUNE 4. 1915.

1,194,214,. Patented Aug. 8, 1916.

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JOHN L. MORRIS, 0F PINE GROVE, LOUISIANA, AND DAVID E. MORRIS, 0F GULFPQRT, MISSISSIPPI.

STUMP-EXTRACTOR.

Application filed June 4, 1915.

To all whom it may concern Be it known that we, JOHN L..MORRIS and DAVID E. MORRIS, citizens of the United States, and residents, respectively, of Pine Grove, in the parish of St. Helena, State of Louisiana, and of Gulfport, in the county of Harrison and State of Mississippi, have invented a certain new and useful Improvement in Stump-Extractors, of which the following is a specification.

Our present invention relates generally to certain new and useful improvements in stump extractors, and more particularly to a device of this class wherein suitable fluid power is supplied to a stump lifting cylinder, the latter being supported in a portable frame in such manner as to permit free movement thereof in any direction so as to maintain the same in a direct line with the stump being lifted, and thus eliminatevall bending strain both upon the pressure cylinder and the connection thereof with the pump, including the rod of the piston working Within the cylinder. This function is preferably accomplished by an arrangement wherein power is transmitted from hydraulic pumps to a cylinder in a vertical position, suitably supported on converging columns joined at their upper ends and forming a supporting crown for the cylinder of such a nature as to receive a ball joint at the upper end of the cylinder allowing the latter the necessary movement as above mentioned.

In our apparatus the lower ends of the converging columns just mentioned, are preferably supported on skids in the form of pontoons, placed parallel with one another, so as to constitute, with the columns, a derrick for the support of the cylinder capable of being moved from place to place. Being thus movable, the entire extractor is preferably adjusted by means of an adjusting cable and asuitable block, either operable independently when the-derrick is to be transported in a straight line, or in conjunction with guide blocks attached to the respective skids or pontoons, where the derrick is to be moved to the right or left as desired, the adjusting cable extending around a drum which receives rotation from a prime mover suitably mounted upon one of the skids or pontoons adjacent the said drum, and opposite to that upon which the Specification of Letters Patent.

Patented Aug. 8, rain. Serial no. 32,099.

hydraulic pumps for supplying fluid to the lifting cylinder, are disposed.

We also preferably provide a swinging boom in connection with the derrick frame, to be used either for moving obstructions from in front of the portable derrick and of a movable nature, as well as for loading stumps in Wagons after they have been extracted from the ground, although the boom is primarily intended for use in disposing the lifting cyllnder into, and removing the same from, its operative position as before described, in the assembling and dismantling of the several parts of the complete device as thus generally brought out.

Thus with the parts of our improved device generally in mind, the following detail description thereof will be more readily understood and appreciated, reference being had to the accompanying drawings, illustrating the several parts of our apparatus, and in which:

Figure l is a plan view; Fig. 2 is a detail plan of the crown plate having a socket for the ball joint of the lifting cylinder; Fig. 3 is a rear elevation, the lower portion of the lifting cylinder being broken away and in section; Fig. 4 is a side view looking at the right of Fig. 1. Fig. 5 is a detail section through the upper ball joint supporting the lifting cylinder; Fig. 6 is a diagrammatic plan of-the skids and the adjusting and guide cables for moving the portable frame, illustrating their practical action; Fig. 7 is a detail section through the piston head; and Fig. 8 is a detail view of the lower end of the lifting cylinder, partly in elevation and partly in section.

Referring now to these figures, it will be seen in the first instance, that we provide a generally triangular frame, consisting of the spaced parallel skids A and B, in the form of pontoons as will be clearly seen by reference to Figs. 1, 3, and 4, upon which are respectively supported the lower ends of upwardly and inwardly inclined converging beams A, A B and B the upper ends of which beams are contiguous to one another as best seen in Figs. 8 and 4 and are rigidly joined and connected by means of a crown piece C, this crown piece supporting a block C on which a crown plate D is secured, said crown plate having a central socket as best seen by reference to Fig. 2, and indicated at D, in vertical line with apertures C through the crown piece C and the block C supported thereby, as seen in Fig. 5. Provision is thus made for the reception of the upper end of a vertically disposed lifting cylinder E, through the apertures C just mentioned, the upper extremity of which cylinder is threaded as indicated at E and particularly shown in Fig. 5, to receive a ball E thereon, adapted to seat in the 'socket D of the crown plate D as also seen in the same figure, thus suspending the cylinder E in such manner as to permit its lower end to freely move in all directions out of a true vertical line and thus follow the irregular movements of a stump as it is lifted.

By referring more particularly to Figs. 3, 7, and 8, it will be seen that a piston F is movable in the cylinder E and is provided with a depending piston rod F extending downwardly through a stufling box E at the lower end of the cylinder and provided at its lower end with an eye F to which one end of a cable G, constituting the lifting cable, is secured, this cable being provided with an intermediate block, as clearly seen in Fig. 3 and indicated at G, and having its opposite end securely fastened to the lower apertured end H of an eye-bolt I-I anchored through the crown piece G, its block C and the crown plate I). The piston F may of course be suitably constructed for the purposes for which it is intended, and as shown in Fig. 7, preferably includes an air release valve F This piston receives fluid pressure 7 against its lower surface through a fluid supply pipe I, one end I of which is extended into the lower end of the piston cylinder E as plainly seen in Fig. 8, and the opposite end of which extends to, and is connected with, the discharge of a pluralityof pumps generally indicated at J and whichof course may be of any suitable construction for this purpose, these pumps being preferably connected through suitable clutch controlled connections with a shaft K, and receiving their supply from a fluid tank L, to which tank leads a return pipe L adjacent the outlet pipe L and controlled by valves L so as to permit the return of the pressure fluid, through the before-mentioned pipe I, when the pressure is to be relieved below the piston F.

The shaft K just mentioned is rotated through a rear transversely extending sprocket chain M connected at one end to the sprocket wheel K thereof, and connected at its opposite end to the sprocket wheel N of a shaft N, the forward end of which is provided with a gear N in mesh with a gear upon the power shaft 0 of a prime mover O which may, if desired, be in the nature of an internal combustion engine mounted upon the skid or pontoon B and thus substantially counter-balancing the end to the rear portion of the skid or pontoon A as best seen at Q in Fig. 1, this cable being provided with an intermediate block Q and having its opposite end adapt ed for passage around, and to be wound upon, the drum P as also seen in the same figure, this adjusting cable being adapted to be hitched by its block Q to a stump forwardly of the portable apparatus just described, in order to draw the apparatus in a straight line and properly position the same over the stump.

By reference to Fig. 6 it will be seen from the dotted lines Q that the adjusting cable Q has been hitched as above described to a stump Q} and by means of such cable, the apparatus has been drawn to properly position the same with respect to the stump and bring the latter in vertical alinement, or substantially so, below the lifting cylinder E.

To the forward endsof the skids or pon toons A and B are attached the guide cables R and R, having guide blocks R and B respectively, these guide cables being adapted, by means of their blocks just described, to control the adjusting cable Q in the manner indicated in Fig. 6 when it is desired to move the portable frame to the right or the left as the case may be. In this figure, stumps Q, and Q, are shown forwardly of the portable apparatus and respectively to the left and right thereof. Thus, when it is desired to draw the portable apparatus to the left, the adjusting cable Q as shown in dotted lines Q in Fig. (3, is passed through the block R of the uide cable It and attached to the stump a)? so that when wound upon the drum 0 the adjusting cable causes movement of the portable frame in a direction toward the left in order to bring the same into proper position with respect to the stump Q Likewise when the frame is to be drawn to the right, the cable Q, is passed through the guide block R of the guide cable R as shown in full lines in Fig. 6 and attached to the stump-Q so as to bring the portable frame into proper relative position with respect to the last-mentioned stump.

lVe also preferably provide a swinging boom S, the lower end of which may be stepped upon a plate S secured upon the skid or pontoon B as shown in Fig. 1, and

may also be detached from said plate and stepped upon a bracket S secured to one of the rear members B of the cross bracing connecting the uprights A, A, B and B In its first mentioned position, that is stepped upon the plate S, the boom is utilized, together with its cable S and block S, the former of which is adapted to be wound upon the drum P to remove obstacles of a removable nature from the path of the portable apparatus and also to load ex tracted stumps upon a wagon or suitable wheeled apparatus for transporting them to a point of final disposition. On the other hand, when stepped within the brackets S as shown in Fig. 4:, the boom is particularly intended for use in assembling and dismantling the apparatus, to elevate the lifting cylinder E into, and lower the same out of, its operative position as shown in theseveral figures, such position of the boom S being shown in dotted lines in Fig. 4.

Thus in carrying out our invention it will be seen that We provide a simple, compact, efficient and durable extractor, of a powerful nature especially designed to extract large as well as small stumps effectively and rapidly. It will also be seen that We provide an apparatus in which the stump extracting parts have sufficient flexibility to follow the irregular movements of the stump as it is being lifted from the ground, in order to obviate the tremendous strain which would otherwise impose itself upon the structural framework constituting the support of the lifting parts. It is understood, of course, that the lifting cable G may, by means of its block G, be suitably hitched to the stump, and that the power developing parts including the several elements of gearing for the rotation of both the pumping mechanism and the cable drums, may be considerably varied, as may also the particular construction of the pumping mechanism itself.

We claim 1. A stump extractor including a portable frame comprising a structural support and skids upon which said support is mounted, a crown plate supported at the upper portion of the said structural support and having a socket, and stump extracting -means including a fluid pressure cylinder depend ing through the crown plate and having a detachable ball at its upper end resting in the socket of the said crown plate.

2. In a stump extractor, a portable frame including spaced side skids, stump extracting means carried thereby, guide cables extending from the ends of said skids and having guide blocks at their outer ends, an adjusting cable engageable with the guide blocks of either of the guide cables, one end of which adjusting cable is attached to the frame at one side, and a power operated drum at the opposite side of the frame and around which the opposite end of said adjusting cable is extended.

3. In a stump extractor, the combination of a supporting frame having a crown plate provided with a socket, and stump extracting means including a vertically disposed fluid pressure cylinder having a threaded upper end and a ball having a threaded bore engageable with the said upper end of the cylinder and adapted to rest in the socket of the crown plate whereby to permit swinging movement of the lower end of the said cylinder in all directions.

4. In a stump extractor, a portable frame,

stump extracting means carried thereby, ad-

justing cables for moving the frame from place to place, power operated means for controlling and actuating said adjusting cables, and guide cables also carried by the said frame and with which the said adjusting cables cooperate to control the direction of movement of the frame.

JOHN L. MORRIS. DAVID E. MORRIS.

Witnesses R. L. STEWART, A. A. MATHIAS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). G.

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