US367903A - Hoisting and dropping apparatus - Google Patents

Description

(No Model.) '4 2 sheets-*sheen 1.

f H. s. GAIL.

HOISTING ANDDROPPING APPARATUS. No. 367,903. Patented Aug. 9, 1887.

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H. s. GAIL. i HOISTINGl AND DROPPING APPARATUS.

No. 367,903. Patented Au 9, 1887.

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UNITED STATES HARRY S. GAIL, OF HIGHLAND PARK, ASSIGNOR TO' FREDERICK C.

AUSTIN, OF CHICAGO, ILLINOIS.

HOISTING )AND DROPPING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 367,903, dated August 9, 1887. Application tiled February 11, 1887. Serial No. 227,263. (No model.)

To all whom, t may concern.-

Be it known that I, HARRY S. GNL, a citizen of the United States, residing at Highland Park, Lake county, Illinois, have invented certain new and useful Improvements in Hoisting and Dropping Apparatus, of which the following is a specification.

The object of my invention is to make a hoisting and dropping apparatus that will iuercase the number of times the tool or weight is raised and dropped with a given power and dispense with the reverse or back motion now employed in machines of this class to permit the tool or weight to drop; and my invention is particularly designed for use in drilling wells, driving piles, and similar work; and it consists in the features and details of construe tion hereinafter described and claimed.

In the drawings, Figure lis a rear elevation of the operative parts by which I hoist and drop the tool. Fig. 2 is a plan View ofV the same, taken through Fig. l` just above the shaft which conveys motion to the parts from the source of power, and through the line 2. Fig. 3 is a front elevation of the parts shown in Fig.

1. Fig. tis a transverse section of the slotted drop and pitman, showing the means of cou-- necting the two together. Fig. 5 is a side elevation of the clutch-lever, taken in line i' Fig. 3; and Fig. 6 is a side elevation of the slotted drop, pitmau, and other parts, taken in the line 6 ot' Fig. 3.

In the drawings, A represents the framework on which the operative parts of my improved hoistingl and dropping apparatus are located. Bis the walking-beam; C, the pitmau; D, the shaft leading from the source of power; E, a clutch for throwing theparts out of and into gear, of the shaft'D; G, a beveled pinion meshing into the teeth of the pinion F and 4rotating a shaft, H; H, a shaft rotated by the'beveled pinion G, rigidly attached to and rotating a slotted drop, I; J, horizontal bars above and below the slotted drop I, held by springs close enough together to rub against the ends of the slotted drop as they rotate and exert a frictional pressure on them proportionate to the strength and compression of the springs to retard the velocity of the revolutions of the slot- F, a beveled gear on the end ted drop when the power is on but the weight olf; K, a headed stud connecting the pitman C and the slotted drop I; L, arope or cable leading over pulleys to the tool, weight, or object to be raised and dropped; M, weights ou the walking-beam, and N the slot in the drop I.

In making my improved apparatus for hoist- Y 'stautV it ceases to be drawn down by the pitman C in the operation of the machine. From a drum, O, located in any suitable position in the frame, a rope or cable passes over as many intermediate pulleys as may be desired, and is attached at its free end tothe tool, weight, or other object to bek hoisted and dropped. A ratchet-wheel and crank may be employed in connection with this drum to wind or unwind the rope wound thereon and such position as may be desired. rlhis drum in the arrangement of its crank and pulley and ratchet is shown in Fig. 3, and need not be further described. The rope, leavi ng this drum, passes over a pulley located in the free portion ot' the walking-beam, so that it will rise and fall with the rising and falling of such free portion. I have represented anumber of holes in this )walking-beam, so that the pulley may be located at such point in the free portion thereof and along the same as may be desired. The further out on the free portion of the wal king-beam the pulley is located of course the greater will be the risc and fall which it will have as the walking-beam is operated,and consequently the rise and fall of the tool or weight 'connected with the free'endvof the rope will be regulated accordingly. A pitman, C, is pivoted to this walkingbeam at its upper end, and connected at its lower end with a slotted drop, I, so that as such slotted drop is revolved it will communicate its motion to the pitinan and through it to the'walkingbeam. The slotted-drop I is made, preferably, of two to hold it atv parts bolted together, with a cavity into which the slot passes, and the lower end of .the pit- ICO man is attached to the slotted drop by means of a headed stud or bolt,whosc head rests and moves up and down in the cavity, while its body extends out through the slot. This will be understood by a reference to Fig. 4 of the drawings.

A shal't,D,leads from any conv'enieut source of power-watery horse, or steam-and is supported in suitable bearings in the frame, as shownin Fig. 1. The end of this shaft can ries a beveled gear, F, which revolves with it when thrown into engagement by means of the clutch E. As represented in Figs. l and 2, the clutch is out of engagement. Another short shaft, II, arranged in suitable bearings inthe frame-work, carries a beveled gear, G,

whose teeth engage with the teeth ol' the bev-r eled gear F, so that it rotates as the beveled gears are engaged and rotated, as above explained. The other end of this shaft II is rigidly attached to the slotted drop carryit around with its rotation. This slotv ted drop which is thus revolved is arranged between brakes J J, supported on rods with suitable bearings and provided with springs to produce the amount of friction required. It is made, as above said, preferably by having two parts bolted together,with a slot through one of the parts and with a cavity back of the slot, as shown in Figs. 3 and 4. As above said, thelower end of the pitman is connected to this slotted drop by means of a headed bolt or stud that will permit of easy movement along the slot from one end of the drop to the other.

Of course it will be understood that the pitman is arranged on that side ofthe slotted drop which contains the slot, so that the body otl this headed stud or bolt may extend out through the slot. As the shaft D revolves it will cause the shaft A to rotate through the engagement of the beveled gears F and G. This will cause the slotted drop to revolve and will carry the pit-man down with its revolutions. This slotted drop rotates in the direction of the arrow shown in Fig. Si, and when it has carried the pitman down to its lowest point, so that the direction of its slot and the direction of the pitman are coin eident, the weight on the end ol' the walkingbeam will canse its I'ree portion to instantly rise, and will carry the lower end oi' the pitinan up along the slot to the upper end of the slotted drop, when the revolving drop will again carry the pitman around with it until it has again brought its lower end to the Iowest point, when the weight of the walkingbeam will again bring it to the top. A spring or cushion of some kind may bc employed to I, so as toA receive the free cud of the walking-beam and to prevent undue and perhaps injurious concussion of the parts. Thus it will be seen that with every revolution of the slotted drop the pitman, and through it the free portion ofthe walking-beam, will be carried down twice instead of once, as would be the case if the pitman were pivoted to thc revolving dropin the usual way. It will be evident from this that the free end ofthe rod and the tool or weight to which it is attached will be twice raised as the i'rce portion of the walking-beam is twice carried down, and twice allowed to drop freely as the free portion of the walking-beamv is raised, In this way I secure two movements of the tool or weight up and down with every revolution of the shalt carrying the slotted drop, and I dispense with all reverse and back motion necessary where the tool or weight is raised by winding the rope or cable on the drum and then permitting it to unwind by reversing the revolving motion of the drum.

I do not mean in the foregoing description to limit myself to the precise arrangement ot' parts described, as it is evident that various changes and modifications maybe employed wit-hout departing from the principle of my invention, which consists in the employment.

of a revoluble slotted drop that permits the pitman to rise and to be carried down a second time during a single revolution ol' the drop with which it is connected. In many eases the walking-beam maybe dispensed with and the rope or cable connected directly to the end of the pitman, which in this case may be made very short and only long enough to connect the rope thereto. By the pitnian I mean that piece which forms the means of connecting the revolving slotted drop directly or indirectly with the tool or weight to be raised, without reference to its length, size, or form.

That I regard as new, and desire to secure by Letters Iatcnt, is

In hoisting and droppi ng apparatus,thc com' bination of a frame, a slotted revoluble drop, a pitman connected at one end to the slotted dro'p by a connecting bolt or `piece movable along the slot, a walking-beam to which the other end of the pitman is pivotal ly connected, a weight on thc walking-beam to draw the pitman back to its normal position as each revolution of the drop brings its slot in aline coincident with the longitudinal axis of the pitman, and means for rotating the slotted drop, substantially as described.

HARRY S. GAIL. itnessest Tiros. G. CHAPMAN, )tra s. E. (tavnonn.

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