US93579A - Improved hay-elevator - Google Patents

Description

MPETERS. PMuTo-LITHUGRAFHER. WASHINGTON, D CA unfall sata" parte epm T.. lARNOLD, or TROY, PENNSYLVANIA.

Letters Patent No. 93,579, dated August 10, 1869.

IMPROVED' HAY-ELEVATOR.

The Schedule referred to in these Letters Patent and making part of the sameA To all whom 'it may concer/n:

-whereby the forks, when elevated to a given height, are carried' in a horizontal direction to any point under the beams, bythe sliding of said carriers along the beams, and aft-er removal of their loads' are again returned bythe sliding back of the same.

The inconveniences heretofore attending'the use of this machine have been, first, the liability of the carrierto slide along the beam during the hoisting of the fork with its load, and secondly, the liability ofthe fork to run downward during the backward sliding of the carrier.

My invention consists in the providing of the car- Jier'of a hay-pitcher, of this description, with a combined locking-hook and dog, whereby the carrier is locked to the beam during the raising of the fork, and whereby the weight ofthe fork is sustained during the backward sliding of the carrier.

Referring to thc accompanying drawing- Figure l represents a longitudinal view of a haypitcher constructed according to my improvement,

with its carrier and locking-hook represented in section;

Figure 2 represents a similar view of a portion of the same, showing the manner of applyin gthe improvemeut to a single rope and pulley; and

' Figure 3 represents a transverse section ofthe pitcher taken through the carrier. A

Similar letters of reference indicate corresponding parts in both figures.

A is the horizontal beam of a hay-pitcher, having arranged to slide thereon a carrier, B, to which is suspended and operated, by means of a block and tackle,`

hay-fork, f. Elevation of the fork, and sliding of the carrier B are effected by the application of power to the rope e, while the backfwa-rd sliding-of the said carrier is effected by the transferring of the power to the rope c', substantiallyas in other hay-pitchers of this kind.'

But in addition to this, I provide the carrier B, on the under side thereof, with a combined locking-hook and dog, a.

Said device Iconstructed of iron, hard wood, or other suitable material, and is piroted within thc carrier at a point, x, near the upper part of the outer edge thereof.

The outer extremity of this locking-hook and dog a, is provided with an upwardly-projecting catch, a', for engaging with a downward projection or locking-piece, b, provided at the outer end of the main body of the beam A, while its opposite or inner extremity is of suflcient weight to overbalance the said hooked end or catch a', thereby to insure a ready engagement of the catch a with the projection o r locking-piece b, so that by said engagement the carrier-B is locked to the beam, and its sliding prevented during the raising of the fork.

Then the fork is raised to av sufficient elevation, the

npperend of the pulley-block d strikes against the nnt der side of the inner extremity of the locking-hook and dog a, and unlocks the said catch a from'the lockingpiece b, thereby releasing the carrier B, whereupon a continued draught upon the rope e will cause the sliding of thc carrier along the beam A, carrying with it the loaded' fork f.

After the unloading of the fork, the rope c is relaxed, and is immediately caught between the periphery of the pulley e and the inner extremity of the combined hook. and d og'a, by the dropping of theJatter, in such manneufthat the downward force exerted upon the weight of the fork will ten'd to jam the rope the tighter between the said parts, thereby eifectually preventing the descent of the fork, as illustrated bythose part-s in g. 1, represented in red outline.

Upon the transferring of the power to the cord c', the carrier B is made to slide back to its former position, at which point the catch a is pressed downward by contact of its bevelled surface with the bevelled snrface of the locking-piece b, thereby releasing the rope e, whereupon the fork is allowed to descend to the point from whence it rst started, while the locking of the carrier Bis again efected by the engagement of the catch a and locking-piece b.

The said locking-hook and dog a is provided with an opening, o, near its central portion, 'for the passage of the'extremity of thecord c, in ,the attaching thereof to the under side of the carrier.

For raising light weights, or under other circulal stances, where the pulley l is not necessary, a trip ping-button, g, is attached to the cord c, above the fork, for tripping the hook (l, and unlocking` the carrier, as illustrated in tig. y

Horizontal guide-ways, m my, composed of strips of wood, 'or other material, are attached to the sides of the beams A, lengthwise thereof, and sliders, n n, composed of vshorter strips, of the same material as the carrier B, -are secured in a horizontal manner through lthe upper part ofthe said carrier.

` Said sliders n a are fitted to slide along the upper side of the said guide-Ways m my, for the purposeoi Vsupporting the carrier Vn'pon the bea-m, and facilitating its sliding movement thereon.

What I claim as my invention, and desire to have secured by Letters Patent, is-

1. The locking-dog a, so constructed and connected with the carrier B, as to perform the' double purpose of retaining the carrier in position While elevating the load, and of preventing the descent of the fork during the return-motion of said carrier, substantially as specified.

2. In combination with the carrier1 having its locking-hook and dog operating as above, the stationary piece b, whereby the carrier is retained and the rope liberated simnltaneouslyyin the manner substantially as shown and described.

T. H. ARNOLD.

Witnesses:

DANIEL RIDER, M. A. GATES.

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