US1131518A - Hay-stacker. - Google Patents

Description

B. HODGMAN.

HAY- STAGKER.

APPLICATION IiLED APR. 18. 1913.

Patented Mar. 9

5 SHEETS-SHEET 1.

wue/wtoz [frame fidyman/ THE NORRIS PETERQ 00., PflOmLli'HOq WASHINQTUN. D4 C.

B. HODGMAN.

HAY STAOKBR.

APPLICATION FILED APRl8, 1913.

1,131,518. Patented Mar. 9, 1915.

6 SHEETS-SHEET 2.

amen W01 affovnw HE NORRIS PETERS 0-. PHOID-LITHQ. WASHINGTON. D. C.

B. HODGMAN. HAY STAGKBR.

APPLICATION FILED APRJB, 1913. 1,131,518.

Patented Mar. 9, 1915.

5 SHEETSSHEET 3.

fimce ffodymaw THE NORRIS PETERS 60., PHOTO-LITHO.. WASHINGTON. D. C

B. HODG'MAN.

HAY STAGKER.

APPLIOATION FILED APB-.18, 191s.

Patented Mar. 9, 1915.

6 SHEETS-SHEET 4.

THE NORRIS PETERS c0 PHOTO-LITHQ, WASHING mN, D. C.

Patented Mar. 9

6 SHEETS-sun's.

NORRIS PETERS ca. FHOTO-LITHO.. WASHINGTON, D. C.

BRUCE HODGMAIN, 01E SHOSHONE, IDAHO.

HAY-STAGKER.

Application filed April 18, 1913.

T 0 all whom it may concern Be it known that I, BnUon HODGMAN, a citizen of the United States, residing at Shoshone, in the county of Lincoln and State of Idaho, have invented new and useful Improvements in Hay-Stackers, of which the following is a specification.

This invention relates to hay stackers, and it has particular reference to that class of stackers in which a portable derrick is employed for the purpose of raising the load of hay and depositing it on the stack.

One object of the invention is to produce a simple and efiicient portable derrick which may be readily transported from place to place and set up for operation and which shall be simple in construction and efiicient in operation.

A further object of the invention is to produce a derrick in which simple and efficient means are provided, to operate in connection with the hoisting apparatus for swinging the derrick arm or boom from the load receiving point to the point where the load is to be dropped or deposited.

A further object of the invention is to produce a simple and eflicient construction whereby the derrick boom or arm, after the load has been dropped or deposited will gravitate to the initial or load receiving position.

A still further object of the invention is to simplify and improve the construction, arrangement and operation of the detailed parts of the invention.

\Vith these and other ends in view which will readily appear as the nature of the invention is better understood, the same consists in the improved construction and novel arrangement and combination of parts which will be hereinafter fully described and particularly pointed out in the claims.

In the accompanying drawings has been illustrated a simple and preferred form of the invention, it being, however, understood that no limitation is necessarily made to the precise structural details therein exhibited, but that changes, alterations and modifications within the scope of the claims may be resorted to when desired.

In the drawings,Figure 1 is a side elevation of a hay stacker constructed in accordance with the invention. Fig. 2 is a top plan view of the same. Fig. 3 is a detail view in rear elevation and on a larger scale of the derrick mast and related parts.

Specification of Letters Patent.

7 Patented Mar. 9, 1915..

Serial No. 762,088.

Fig. 4 is a rear elevation on a still larger scale of the top of the mast and related parts. Fig. 5 is a side elevation of the parts shown in Fig. i. Fig. 6 is a rear elevation, partly in section, of a portion of the mast showing the boom adjusting means. Fig. 7 is a side elevation of the parts shown in Fig. 6. Fig. 8 is a side elevation of the hoisting apparatus. Fig. 9 is a plan view of the hoisting apparatus, the frame or casing of the same being shown in section. Fig. 10 is an end view of the hoisting apparatus, the derrick arm being shown in section. Fig. 11 is a view in side elevation of the free end or exterior of the derrick arm. Fig. 12 is a plan view illustrating a niodi fication of the hoisting apparatus.

Corresponding parts in the several figures are denoted by like characters of reference.

A rectangular base frame A is provided, said frame including front and rear sills 15, 15 which are in the nature of runners that permit the frame and related parts to be moved conveniently from one position to another. A mast 16 rising from the rear sill is provided with a rearwardly extending bracket 17 which is connected by braces 18 with the front corners of the base frame; inclined braces 19 connect the rear corners of the frame with the mast. In this man ner a frame structure is provided whereby the mast is firmly supported in such a manner that it may be conveniently moved without necessity for demounting.

At a convenient point near the lower end of the mast 16 is mounted a bracket plate 20 having a step or offset 21 and provided with sleeves 22 affording bearings for a vertically disposed pintle 23 having a conical pointed lower end which is supported on the step 21. The pintle 23 has an arm 24: which extends forwardly intermediate the sleeves 22, said arm serving to support the derrick arm or boom 13 which is connected therewith by a substantially horizontal pivot member 25, the latter being disposed in a plane substantially at right angles to the pintle 23. The boom comprises a core member 26 preferably of tubular construction, the same being provided at intervals with strut frames 27 supporting the truss members 28, which latter may consist of cables, rods or wires and for the terminal attachment of which sleeves 29 are provided near the respective ends of the boom, one of said sleeves being plainly seen in Fig.

11. Said figure also illustrates a cap bracket 30 mounted on the free end of the boom, said bracket serving to support a sheave 31 having an auxiliary guide pulley 32, and said cap bracket being also provided with a clevis 33 for the attachment of the flexible adjusting element or cable 34.

A frame 35, see Fig. 6, which is mounted near the lower end of the mast supports a revolving drum 36, the shaft of which 37 carries a spur wheel 38 meshing with a pinion 39 on a shaft 40 which is likewise mounted on the frame 35. The shaft 10 has an operating crank 11 in the path of which a pivoted stop member is arranged, said stop member consisting of a lever having a weighted arm 42 which is guided in a keeper 43 and which normally gravitates in the path of'the crank so as to obstruct rotation of the latter, the other arm 4: 1 of the lever being connected by a flexible element, such as a cord 45, which is guided over a pulley 16 with a treadle 17 by means of which the lever may be actuated to move the weighted arm42 out of the path of the crank 41. The rope or cable 34 which constitutes the boom adjusting element is guided over a pulley 36 carried by the bracket 17, and it is terminally connected with and wound upon the drum 36, and it will be readily understood that by winding said cable upon or unwinding it from the drum 36, the free end of the boom may be raised or lowered and supported at various elevations.

The upper end of the mast supports a frame 48 including a top member which has been shown'as being composed of a spacing sleeve 49 through which a bolt or rod 50 extends. A slide 51 mounted on and movable upon the sleeve or top member 49 carries a pulley 52 over which the adjusting and supporting cable 3 1 is guided. Flexible elements 53 which are suitably connected with theslide 51 are guided over pulleys 54 supported on the sides of the frame 48, and said flexible elements are terminally attached 1 to and connected with the arms of a lever 55 which is fulcrumed on the mast 16, said lever being capable of being secured at variousadjustments by suitable means, such as a pin 56, extending through one arm of the leverrand through one of a plurality of perforations 57 in a plate or bracket 58 secured on the mast." It will be seen that by means of the lever 55 the slide 51 carrying the pulley 52 may be moved longitudinally of the top member 49 of the frame 48, which latter, as will be seen, is disposed transversely of the mast. The guide pulley 52 may thus be positioned and maintained in a position in the medial vertical plane of the mast or to either side of said plane.

It will be readily understood that-when the machine is set up for operation with the mast in an approximately vertical position,

and assuming the guide pulley 52 to be supported in a medial position with respect to the mast and the frame 48, the tendency of the boom will be to gravitate to a certain position. Let the slide 51 carrying the guide pulley 52 be shifted or moved to either side of this normal or medial position, it is evident that the ad usting and supporting element Set will exert a stress on the free end of the boom, whereby the latter will have a tendency to swing in the direction in which the pulley carrying slide has been moved, said swinging movement continuing until the free end of the boom finds its level or is otherwise checked. checking this movement, a check rope 59 is provided, said check rope connecting the boom with one of the diagonal braces 18 of the frame structure, and said check rope being of such length that it will prevent the boom from swinging into contact with the frame in one direction. A second check rope 60 is provided for the purpose of limit- 7 ing the lateral swinging movement of the boom in the opposite direction, it being readily understood that one or both of said check ropes are at all times slack according to the position of the boom. By proper adjustment of the check rope 59 it is obvious that the drifting or gravitating movement of the boom may be checked at various points, and the point at which it is thus checked will be known as the load receiving position. It is obvious that when the pulley carrying slide 57 is moved to the opposite side of the medial line to that shown in Fig. 2, the load receiving position will be determined by the check rope 60.

The hoisting apparatus includes a frame or casing 6lwhich is suitably mounted or supported on the boom and which supports pulleys or sheaves 62, 63 over which the hoisting element or cable 64k is guided, one end of said hoisting element or cable being connected with the source of power, not shown. The other end of the hoisting element is guided over the pulley in the sheave 31 at the free end of the boom, and it carries a fork or other load carrying member 65 which may be actuated by a trip rope 66. Slidably supported on'the shaft 67 which carries the guide pulley 62 is a drum 68 having clutch members 69 adapted to engage mating clutch members 7 0 on the guide pulley 62. The drum is operated by a shipping lever 71 which is connected by a spring 72 with an arm or bracket 7 3 extending from the frame 61, the tension of said spring be- E ing exerted to iorce the drum 681nto locking engagement with the guide wheel 62. A flexible element, such as a rope 74:, is ad- ]ustably connected with the shipping lever 71 by means of a clamping device 75, and said rope is guided over a pulley 76 carried by an arm or bracket 77 111 an outward d1- For the purpose of rection toward the free end of the boom, said rope being guided over the auxiliary guide pulley carried by the sheave 31 and provided with a weight 78 which is sufiiciently heavy to overcome the tension of the spring 72, so that said weight will serve to maintain the pulley 6S normally disengaged from the guide wheel 62. The weight 78 is located in the path of the load carrying element 65 at an elevation which is determined by the adjustment of the rope 74: with respectto the shipping lever 71 by means of the 0 amp 75. When the load carrying element 65 ascends, it will engage the weight 78 and lift the latter, thus permitting the tension of the spring 71 which is now no longeropposed by said weight to actuate the shipping lever 71 to place the drum 68 in looking engagement with the guide wheel Suitably connected With the drum 68 is one end or" a flexible element, such as a rope T9, the other end of which is connected with a fixed point, such as asuitably located stake 80, said rope being guided over a guiding element, such as a pulley 81, connected .vith the boom. The rope 79 is provided intermediate the pulley 81 and the stake with a weight 82, whereby it is tensioned and which, at the proper time serves to unwind the rope 79 from the drum 68, as will be presently seen. The drum 68 has been shown as being provided with a guiding wedge 83, whereby the second whirl of the rope 79 will be guided into position adjacent to the first whirl when the drum is rotated to wind the rope.

is the operation of this device, when the boom is in load receiving position where it is held by the check rope 59, the load carrying element 65 is lowered for the purpose of taking the load, the lowering being effected by relaxing the pulling strain on the hoisting element G l. When the load has been grasped, pulling strain is applied to the hoisting element G l with the effect of lifting the element until it strikes the weight 78 which, being thereby lifted, relaxes the strain on the rope 74, thereby causing the drum 68 to be thrown into locked engagement with the uide wheel 62 by the tension of the spring 72. The pulley 62, it will be understood, is being rotated by frictional contact with the hoisting element 64:, and the drum 68 will thus be rotated, and the rope 79 will be wound thereon, thereby causing the boom to swing in the direction of the stake 80 with which said rope 7 9 is connected. lVhen the proper place has been reached for discharging the load, the pulling strain on the hoisting element 64 is interrupted, and the load may be dropped bv manipulating the trip rope 66 or in any other convenient manner. By relaxing or releasing the strain on the hoisting element 64, the load carrying element will descend by gravity, thereby permitting the weight 7 8 to drop and overbalance the tensional force of the spring 72, thereby actuating the shipping lever 71 to throw the drum 68 out of locking engage- V ment with the guide wheel 62. The rope (9 will now become unwound from the drum 58 by the tension exerted by the weight 8:3, thus releasing the boom and permitting it to drift or gravitate to the initial load receiving position.

In the figures oi the drawings the boom has been shown as being arranged to drift or gravitate to the right with respect to the mast as viewed by a person standing in front thereof.

When the direction of the load carrier is to be reversed it is necessary only to change the point of attachment of the rope 79 from one side of the mast to the opposite side and to shift the slide 51 correspondingly.

Under the modification illustrated in Fig. 12 the drum, here designated 68, is normally kept out of locking engagement witl the guide wheel 62 by the tension of the spring 72 actuating the shipping lever 71. The weight 78 is dispensed with, but a rope 742- which is guided over the pulley 76 is guided over another pulley 83 connected with the boom, as shown in Fig. 1, and the free end of said rope is permitted to depend within reach of the operator who, by pulling the aine, may throw the shipping lever 71 against the tension of the spring 72, thus throwing the drum 68' into gear.

For the purpose of sustaining the apparatus and especially the mast in proper position for cooperation, suitable supporting members may be provided, such as guy ropes, some of which have been indicated by 85.

It will be seen from the foregoing that I have provided a very simple and efficient stacking apparatus which is largely automatic in its operation and which has been found to be thoroughly useful and effective.

The apparatus is constructed in such a manner that it may be readily demounted or disassembled for the purpose of transportation from place to place, and for the transportation thereof a carrying truck of simple construction may be provided.

Having thus described the invention, what is claimed as new, is

1. In a hoisting apparatus of the class described, a mast, ZL'bOOIY). pivotally connected therewith, a flexible supporting element connected with the free end of the boom, a horizontally disposed sleeve at the upper end of said mast; and a laterally adjustable pulley slidably mounted on said sleeve over which said supporting element is guided, the said pulley throwing the intermediate portion of said flexible supporting element out of the same vertical plane with its extremities.

2. In a hoisting apparatus of the class described, a mast, a boom pivotally connected therewith, a flexible supporting element connected with the free end of the boom, a horizontally disposed sleeve at the upper end of said mast, a laterally adjustable pul ley adjustably mounted on said sleeve over which said supporting element is guided for throwing the intermediate portion of the flexible supporting element out of the same vertical plane with its extremities, and flexible means for adjusting the pulley transversely with respect to the mast and for securing it in adjusted position.

3. 111 a hoisting apparatus of the class described, a mast, a boom pivotally connected therewith, a flexible supporting element connected with the free end of the boom, a sleeve disposed transversely at the upper end of said mast, a slide adjustably mounted on said sleeve and carrying a guide pulley over which the supporting element is guided, and means for adjusting the slide and then securing it in adjusted position for throwing the intermediate portion of said flexible element out of the same vertical plane with its extremities.

i. In a hoisting apparatus of the class described, a mast, a boom pivotally connected therewith, a winding drum, a flexible supporting element connecting the winding drum with the free end of the boom, an adjustable pulley for the flexible supporting element including a slide and a slide rest disposed transversely with respect to the mast and carried by said mast near the upper end thereof for throwing the intermediate portion of said flexible supporting element out or" the same vertical plane with its extremities.

In a hoisting apparatus of the class described, a mast, a boom pivotally connected therewith to swing laterally, a flexible supporting element for the boom, a laterally adjustable guided element over which the supporting element is guided, a check member to limit lateral driftof the boom, means for swinging the boom laterally in a direction opposite to that in which it normally drifts by gravitation, said means including a winding drum and a flexible element having one extremity connected to said drum and the remaining extremity connected to a stationary support, means for rotating the winding drum including a load carrier hoisting element, a pulley over which said hoisting element is guided, and mating clutch members on the pulley and the winding drum, and means for moving the winding drum to place it into or out of locking engagement with the guide pulley.

6. In a hoisting apparatus of the class described, a mast, a boom pivot-ally connected therewith, means for supporting the boom for lateral drifting movement, a check element to limit the lateral drift of the boom, means for swinging the boom laterally in a direction opposite to that in which it normally drifts by gravitation, said means including a winding drum, and a flexible element connected at one extremity to the drum and to a stationary support at its opposite extremity, means for actuating the Winding drum including a load carrier hoisting element, guide pulleys over which said hoisting element is guided, and means for placing the winding drum into and out of engagement with the guide pulleys, said means including a spring actuated shipping lever, a suitably guided flexible element connected with the shipping lever and carrying a counterweight overbalancing the tension of the spring, and a load carrying. element connected with the hoisting element and in the path of which said counterweight is located.

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

BRUCE HODGMAN.

*Witnesses:

SETH R. SrooKToN, NroHoLAs B. BUGKLER.

Copies of this patent may be obtalnedfor' five cents each, by addressing the Commissioner of Eatents.

Washington, D. C.

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