US83938A - Improvement in derrick - Google Patents

Description

Q est @dmail ese/w @titille J. B. DRAKE AN D WILLIAM H. HUTSON, MONTOURSVILLE, PENNSYLVANIA, ASSIGN- ORS TO THEMSELVES AND J. SILL, OF SAIWE PLAGE.

Letters Patent No. 83,938llated November 10, 1868.

IMPROVEMENT IN DnRRIcK The Schedule referred to in these Letters Patent and making part of the same.

To all whom it may concern:

.Be it known that we J. B. Dnnkn and WILLIAM H. HUTSON, of Montoursville, in the county of Lycoming, and State of Pennsylvania, have invented a new and improved Derrick for Stacking Hay; andv we do hereby declare that the following is a full, clear, and exact descriptionof the construction and operation ofthe saine, reference being hadto the accompanying drawings, making a part of this speciiicamon, in which- Figure 1 is a side elevation, and

Figure 2, a horizontal section through line .fc :t of

fig. 1.

The object of this invention is to'provide a light, cheap, and convenient portable dei-rick for elevating and stacking hay, which, when used in combination with a horse hay-fork, or otherequivalent device, will raise the hay from-the load, convey it to the proper position, and drop it upon the stack, and will then automaticallyreturn the hay-fork to the load to receive another burden.

In the drawings, A is a frame or base, composed of several cross-timbers, resting upon and in any suitable manner attached to a couple of runners, B B, shaped like sled-runners, so that the device can readily be drawn or otherwise conveyed iiom place to place. A mast, C, steps in the centre of the middle cross-beam, and is confined in position by four, more or less, stays, c c c c, as shown in the drawings, the stays being hinged or jointed to the mast in any suitable manner at their upper ends, and hooking to the frame A at their lower ends, so that they can be readily detached from the base when it is desired to unstep the mast.

D'is an arm, provided with a brace, (l, and connecting-rod, d', and attached to the mast by rings or masthoops, E E, aiixed to the end of the arm and the i brace, and so constructed and operating that, while the crane thus formed can be raised or lowered and swung around to any required position, its upper arm D always remains horizontal.

A rod, F, is attached to the upper part of the mast, g

switchfwill cause it to swing around horizontally to any position that may be required for' unloading or loading the hay-fork. Y

jA block or tackle, G, attached to the upper end -of the mast, another, H, at the lower end, and a third or a common sheave or pulley, I, at the outer end of the arm D. A rope, J, extends through the lower block, thence up the mast and through the upper block,

and thence down to a point, m, where it divides, one portion, j, passing over the sheave I, and down to the hay-fork, the other, j', extending back to the inner f tially as described.

end of the arm D, and voperating as a halyard for hoistingand lowering the crane.

These two parts, j and j, are made of such a length that when the'power is applied to the lower end of the rope J, it irst raises the hay-fork with its load of hay to a certain point, or until the part j becomes verti cal, Vthe point' m haxdng passed nearly to, or ,quite through, the blockG, and then, operating by means of the part j', it raises the crane vertically, together with the hay-fork. As the crane thus rises, it swings around upon the guide F to the proper position, in the manner above explained. When unloaded, the crane is lowered, and automatically returns to its original position. In consequence of the ,arm D always beingin a horizontal position, the hay is always held at a distance from the mast, so as to be out of the way, whereby it can be handled much more convem'ently than by any device heretofore employed.

It is evident that a stop can be provided to hold the crane at any point of elevation, and aI trigger, or other equivalent arrangement, can -be used for the purpose of automatically disengaging'the hay from the fork at any point, and could be made adjustable so as to operate at different points, as might be desired. It is further evident that this hoisting-device can be employed to great advantage' in loading and unloading vessels, for raising and lowering merchandise in stores and elsewhere, and generally for every kind of work where articles of no very great weight are to be raised and lowered.

Having thus described our invention,

What we claim as new, and desire to secure by Letters Patent, is-r l. The guide E, in combination with the arm D and the hoisting-device, when operating substantiallyas set forth.

2. The combination of the rope J, having the two,

parts j j, with the crane D, when operating substan- 3. The arrangement of the sled-shaped base A with the above-described derrick, substantially as and for the purpose set forth.

4. The combina-tion and arrangement of the sled A,

'mast O, crane D, rope J, jj', guide F, pulleys G H I,

and braces c c c, substantially as shown and described. To the above specication of our invention, we have signed our hands, this 6th 'day of July, 1868.

J. B. DRAKE. WM. H. HUTSON. Witnesses to J. B. BRAKE:

G. W. Onoexnn, CEAS. A. PETrr-r. Witnesses to W. H. Hu'rsonY z.

Lnvr Connu, Oms. A Pn'rcrir.

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