US1505826A - Haystacker - Google Patents

Description

Aug. 19

C. J. VAN OORT HAYSTAGKER Filed July .30 1923 4 Sheets-Sheet l INVENTOR.

61 Va?) 0w"? ATTORNEY.

Aug. 19 1924.

b'ild July so. 1923 C. J. VAN OORT HAYS TACKER 4 Sheets-Sheet,

' ATTORNEY.

C. J. VAN OORT Aug. 19 1924.

HAYSTACKER Filed July 30. 1923 4 Sheets-$heet 5 INVENTOR. ('J. Van Owrf ATTORNEY.

Aug. 19 ,1924.

C. J. VAN OORT HAYS TACKER Filed July 50. 1923 4 Sheets-Sheet 4 ATTORNEY.

Patented Aug. 19, 1924.

UNITED STATES CORNELIUS J. VAN CORT, OF HOTCHKISS, COLORADO.

HAYSTACKER.

Application filed July 30, 1923.

To all whom it may concern:

Be it known that I, CORNELIUS J. VAN 00121, a citizen of the United States, residing at Hotchkiss, in the county of Delta and State of Colorado, have invented certain new and useful Improvements in Haystackers, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to improvements in hay stackers and more particularly to a device for this purpose of the platform derrick type.

An important object of the invention is to provide a device of this character in which the loaded platform is so connected to the main derrick pole that the reach of the platform from the derrick pole may be adjustably governed.

A further object of the invention is to provide a device of this character in which both the reach and height of the platform may be adjustably governed. l

A still further object of the invention is to provide a novel selective means for controlling the action of the pivoted yoke arm from. which the hoisting platform is carried.

A still further object of the invention is to provide a device of this character which is simple in its construction and arrangement, which is very readily operated, which will be durable and efficientin service and a general improvement in the art.

These and other objects I attain by the construction shown in the accompanying drawings wherein for the purpose of illustration is shown a preferred embodiment of my invention and wherein z y Figure 1 is a vertical sectional view taken through stacking apparatus constructed in accordance with my invention showing the same in the loading position; I

Figure 2 is a side elevation of the apparatus showing the loading platform partially elevated;

Figure 3 is an end elevation showing the loading platform fully elevated and in the dumping position;

Figure 1 is a plan view of the superstructure removed;

Figure 5 is a similar View of the base structure with the superstructure removed;

Serial No. 654,629.

Figure 6 is a section on the line 6--6 of Figure 1;

Figure Figure 3;

Figure 8 is a section on the line 88 of Figure 1; and

Figure 9 is a perspective view of one of the detachable braces.

Referring now more particularly to the drawings, the numeral 10 indicates a skid platform having supporting wheels 11 adjacent one end thereof for supporting the skid during transportation. The skid platform includes an approximately centrally locked transverse member 12 provided upon its upper surface with a wear plate 13 having formed therethrough an opening coacting with an opening 1 1 formed in the transverse member 12 for the reception of a pivot pin 15 upon the lower end of a vertical standard 16. Arranged above the base in vertical alignment with the opening 14 is a bearing member or block 17 having a central aperture 18 through which the standard 16 extends and in which the standard has a rotating fit. This bearing memher is supported above the skid by suitable braces 19 extending upwardly from one side and opposite ends of the skid, so that one side of the platform is free from interfering braces to permit ready access to the standard. Detachable braces 20 are provided for bracing that side of the bearing disposed toward the stack at which side of the bear ing the braces 19 are disposed when the stack is in position for use adjacent the stack to be formed.

The upper end of the standard, which is disposed a considerable distance above the upper end of the bearing member 17, has a reduced extension 21 to opposite faces of which are secured parallel inclined members 22 forming a reach arm 23. Between the upper end of the standard and the bearing and at that side of the standard next adjacent the lower end of the reach arm 23,2. transverse member 24 is secured to the standard the upper surface of which is abutted by an angular brace member 25 the outer upper end of which extends between the parallel members 22 to additionally brace the reach arm. Mounted upon the upper surface of the parallel members midis a section on the line 7-7 of way the ends thereof is a support 26 with which is engaged the central portion of a truss 27 for the reach arm. The upper end of the reach arm is provided with a pair of pulleys 28 and 29 and the lower end of the reach arm is provided with a pulley 30. The lower end of the standard, below the bearing member 17, is provided about the periphery thereof with a plurality of spaced eyes 31 for the interchangeable reception of the swivel hook of a pulley 32. The standard is likewise provided intermediate the bearing member 17 and the skid with a handle member 33 by means of which it may be rotated.

The hoist arm comprises a pair of yoke members 34 and 35 which will hereinafter be referred to as the lower and upper yoke members. Each member is provided with guide members 36 and bracing the side members of the other yoke members, so that the yoke members are slidable upon one another. The upper yoke member is provided adjacent to, but spaced from, its inner end with a transverse member 37 and adjacent its outer end with a second transverse member 38. The lower yoke member has the inner ends of its sidemembers pivotally engaged with the ends of the transverse member 24,as indicated at 39, and is provided at its outer ends with a transverse bracing member 40. To the outer end of the lower yoke member 34 is pivoted a yoke 41 straddling the upper yoke member and provided at its bight portion with a sheave 42. The outer end of the upper yoke member is provided with stop pins 43 against which the guide members 36 of the lower yoke member 34 engage to limitrelative movement of the yoke members in one direction, movement in the opposite direction being limited by the engagement of the guide members 36 when the yoke members are in fully extended relation and the hoist arm is at its greatest length. Pivoted to the standard immediately below the reach arm is a U-shaped yoke 44 which is connected 'to the inner transverse member 37 of the upper yoke member 35 by, a flexible cable 45.

A flexible cable 46 has one end thereof secured to the sheave 42, is thenpassed about the pulley 28, downwardly about the pulley 47 of the sheave '42, then about the pulleys 29, 30 and 32. It is pointed out that the hoist arm, by reason of its weight and by reason of the fact that it is pivoted at its inner end to the transverse member 24, will normally assume the position shown of the yoke 34. By applying a strain to the cable 46 beyond the pulley 32 the arm may be elevated and since upon elevation of the free end of the hoist arm the inner cross member 3'7 of the upper yoke approaches the pivot of the yoke 44, the cable 45 is selective and accordingly by the provision of suitable means the upper yoke member may be slid outwardly upon the lower yoke member to increase the length of the hoist arm. In order to provide for such extension movement of the upper yoke member I pivot upon the standard a plurality of operating arms 48 of different lengths, each arm being provided at its outer end with a shoulder 49': for engagement with the inner transverse member 37 of the upper yoke member 35. These arms are governed by operating members 50 vertically shiftable upon the standard and having at their upper ends outwardly extending portions 51 upon which the arms 48 abut adjacent the pivots. By shifting these arms to the elevated position they are so positioned that they do not engage with the cross member 37 to shift the same. Ac-

cordingly, if the longest of the arms has 7 its operating member 50 vertically shifted it will be so positioned that it willnot engage the cross arm and the next shorter arm will engage therewith. Since the pivot of the arms is above the pivot of the hoist arm the bar or cross member 37 will tend to approach this pivot during upward movement of the hoist arm and accordingly the shoulders 49 by their engagement against the cross member will cause the upper yoke to be slid longitudinally of the lower yoke and the length of the hoist arm to be increased. Since the arms are of different lengths the increasing'length of the hoist arm is selective and may be controlled. Thus, not only the reach of the hoist arm, but the vertical height of its outer end wblien in uppermost position is made adjusta -e.

Extending outwardly from the side members of the upper yokemember 35 at the outer ends thereof are a pair of supports 52, the outer ends of which are 'pivotally engaged with a transverse member 53 at spaced points. To this transverse member are secured fork fingers 54 forming a platform for the reception of hay, straw and the like, the inner ends of the fork fingers projecting inwardly of the transverse member 53 and being connected by a second transverse member 55. Extending wardly from this transverse member 55 at the ends thereof are vertical posts 56, the upper ends of which are connected by a transverse extending member 57. Centrally of the transverse member 55 a second pair of uprights 58 is disposed, these uprights being in spaced relation and havingpivoted thereto intermediate their lower ends a locking bar 59. The locking bar 59 is provided with a slot .60 through which is directed, a pivoted latch member 61 for engagement with. the upper transverse member 57 of the back of the frame, the latch being forced into engagement with this transverse member by a spring 62. The locking .bar 59 has pivotally engaged therewith a yoke 63 to which is connected one end of a flexible element 6% which is trained about a. pulley 65 carried by the yoke 41 of the 'hoist arm of a second pullev 66 carried by the cross member 37 of the upper yoke member and has its opposite end secured to a bar 67 pivoted to the reach mem ber 23 adjacent the upper end thereof. The platform is formed by the fingers 54c and more particularly the transverse member 55 which is connected to the lower end of the locking bar 59 by a spring 68. Secured to the tail piece 69 of the latch 61 are a pair of flexible elements 70 and 71. The flexible element 70 is trained through an eye 72 upon the transverse member 37 of the upper yoke member 35 and through an opening formed in the transverse member 34, the end thereof being positioned for engagement by a person standing upon the ground. The flexible element 71 is relatively short and is positioned for engagement by a person upon the stack to trip the platform.

In the use of the device the hay is loaded upon the platform formed by the fingers 54,

formed in the usual manner, after which strain is applied to the flexible element 46 beyond the pulley 32 to cause elevation of the hoist arm and the loaded platform. During elevation of the platform the cable 63 prevents. tilting of the platform and holds the same in approximate horizontal position. W'hen the platform has been elevated to the proper height it may be released by a pull upon either of the flexible elements 70 or 71 to release the latch, thus permitting the plat.- form to operate independently of the locking bearing and swing downwardly releasing the load carried thereby. In initially forming the stack when great height or reach of the arm is not desired, one of the shorter control arms 48 is employed and as the stack grows in size the length of the control arm employed may be increased by selection of the proper control arm. It will be obvious that by embodying this selective lengthening of the hoist arm and operating the lengthening by the hoist, the use of the stacker is greatly facilitated and the rcnge of use thereof is greatly increased. It will furthermore be obvious that a structure of this character may be comparatively cheaply produced and readily operated. Since the same is capable of a considerable range of change and modification without in any manner departing from the spirit of my invention and I accordingly do not limit myself to such specific structure as hereinbefore set forth except as hereinafter claimed.

I claim 1. In stacking apparatus and in combination, a standard an extensible hoist arm pivoted at one end to the standard, means for elevating the free end of the hoist arm, and a plurality of elements selectively positionable to engage the hoist arm and extend the same during such elevation, each of said elements being of different length.

2. In stacking apparatus and in combination, a standard, an extensible hoist arm pivoted at one end to the standard, means for elevating the free end of the hoist arm, a plurality of elements selectively positionable to engage the hoist arm and extend the same during such elevation, each of said elements being of different length, and a connection between the standard and hoist arm returning the hoist arm to its normal length during lowering of the hoist arm.

3. In stacking apparatus and in combination, a standard, a hoist arm comprising a pair of connected sections, one slidable upon the other to vary the effective length of the hoist arm, one of said sections being pivotally connected to said standard, means engaging the free end of said section and elevating the sections, means carried by the standard and positionable to engage the other of the sections during elevation of the hoist arm to shift said other section upon the first named section and thereby increase the length of the hoist arm, and a connection between said standard and said other section returning the section to its normal position upon the first named section during lowering of the hoist arm.

4. In stacking apparatus and in combination, a standard, a hoist arm comprising a pair of connected sections, one slidable upon the other to vary the effective length of the hoist arm, one of said sections being pivotally connected with said standard, means engaging the free end of said section and elevating the sections, the other of said sections including a cross arm, and an arm carried by the standard and shiftable thereon to a position where it engages the cross arm of said other section during elevation of the hoist arm to thereby shift said other section upon the first named section to increase the length of the hoist arm.

5. In stacking apparatus and in combination, a standard, a hoist arm comprising a pair of connected sections, one slidable upon the other to vary the effective length of the hoist arm, one of said sections being pivot ally connected with said standard, means engaging the free end of said section and elevating the sections, the other of said sections including a cross arm, and a plurality of arms carried by the standard and each shiftable thereon to a position Where it engages the cross arm of said other section to thereby shift the other section upon the first named section to increase the'length of the hoist arm during elevation of the hoist arm, said arms being ofdifferent lengths.

6.- In stacking apparatus and in combination, a standard, a hoist arm pivoted at one end to the standard, means for elevating the free end of the hoist arm, aplatform pivoted to the'free end of the hoist arm, a flexible connection'between the standard and platform for maintaining the platform substantially horizotal-during elevation of the hoist arm, said platform including a base section and a back section, the back sectionincluding a pair of spaced' vertical uprights, a locking bar pivoted at its'lower end to saiduprights and tothe upper end of Whi'ch said flexible element is connected, 'a latch carried CORNELIUS J. VAN oonrq

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