US524862A

US524862A - Hay-elevating derrick

Info

Publication number: US524862A
Authority: US
Publication date: 1894-08-21
Anticipated expiration: 1911-08-21

Description

(No Model.)

` D. OGILVIE.

HAY BLEVATING DBRRIKf N0. 524,862. Y PatentedvAug. 21, v1894.

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DAVID OGILVIE, OF ELK'O, NEVADA.

HAY-ELEVATING DERRICK.\

SPECIFICATIN forming p art of Letters Patent No. 524,862, dated August 21, 1894.

Appumiqn flied November '7, 1893.

To all whom-t may concern:

Be it known that I, DAVID OGILVIE, a citizen of the United States, residing at Elko, in the county of Elko and State of Nevada, have invented certain new and usefulv Improvements in Hay-Elevating Derricks; and I do hereby declare the following to bea full, clear, and exact description of the invention; such as will enable others skilled in the artto which it appertains to make and use the same.

This invention relates to hay elevating derricks, and the object of the same is to improve this class of devices in such manner as to render them freely adjustable and movable to produce a convenient operation of the several parts, and also to insure strength and durability.

With these and other objects in view, the invention consists ofthe construction and arrangement of the parts, as will be more fullyi hereinafter described and claimed.

In the drawingsz-Figure 1 is a perspective yiew of the derrick embodying the invention. Fig. 2 is a detail sectional view of the carriage or traveler. Fig. 3 is an edge elevation of the boom, showing a modification thereof. Fig.4 is a detail perspective view of a portion of the mast and keeper.

Similar numerals of reference are employed to indicate corresponding parts in the several vlews.

Referring to the drawings, the numeral 1 designates a mast, which has its lower end resting on a bed piece 2. The said mast 1 is held in position by two or more stay ropes 3, and by a brace 4:. To the upper' part of the mast is secured a grooved collar 5 engaged by a yoke 5x, pivoted to the inner end of a boom 6. To the outer end of the boom is attached a clevis 7, which has secured thereto the outer end of a cord, or cable 8, which passes over a sheave 9, on one side of` the uppermost part of the mast, and is then extended down ver tically to engage a cleat 10, adjacent to the lower end of said mast, and by means of the said cord, rope or cable, the boom may be raised or lowered, as will be readily seen. On the said boom `is mounted a carriage o r traveler 11, which is composed of two substantial U-shaped arms 12, whose ends are disposed above the boom, and confined between the Serial No. 490,232. (No model.)

same are-rollers 13, which rest and move upon the upper'edge of said boom. The bends of the said arms 12, are located below the boom, and between the same is mounted a pulley 14. At the outer underside of the boom is secured a bracket l15, .having a sheave or pulley 16 therein, and a rope or cable or analogous device 17 extending from a. suitable hayfork or other grapple upwardly over the pulley 14, thence over the pulley 16, and backwardly to the mast over pulley 19, mounted on the latter, and from thence said rope or cable 17 extends downwardly to and engages a lower sheave or pulley 20 and from thence passes outward for attachment to a suitable elevating or draft power.

- Secured to the lower part of the arms 12 of the carriage or traveler, is a yoke 12X to the upper part of which is connected a rope, cable, chain or analogous device 21, which passes over a pulley 22, on the mast 1 and then extends downwardly and is passed through a keeper 23,which has a slot 24 therein,and an outer enlarged portion which gradually reduces toward the fastening point of the said keeper. The lower end of the rope, cable or chain where it passes through the said keeper is knotted as at 25, whereby an -adj ustment of the same may be had and sustained by engagement with said keeper as will be readily understood.

In operation, the hay fork or grapple Ais loaded, and the rope, cable or chain 17, is operated by the draft or elevating power to draw the said loaded fork or grapple upwardly, and the eect of this operation is not only to raise the hay or load, but at the same'time draw the carriage toward the outer end of the boom. This tendency of the carriage or grapple is checked by the rope, cable or chain 2l,

passing over the pulley 22, and Yby this means IOO As shown in Fig. 3, the boom may be reinforced by a metallic rod which passes throughout the length thereof as at 27, to make said boom more rigid and resist the strain brought to bear thereupon, it being understood that the said boom is made of wood.

Other suitable changes may be made and substituted for the arrangement shown, without in the least departing from the nature or spirit of the invention.

Having thus described the invention, what 1s claimed as new is- In a hay lifting derrick, the combination of a mast l, a bed piece upon which the said mast I5 is revolubly mounted, stay ropes holding said mast in position, a grooved collar secured to the mast, a boom having a yoke at the inner end thereof engaging the said grooved collar, a clevis attached to the outer end of the boom, a sheave on the boom, a carriage or traveler 11 mounted on the boom, composed of two i substantially U-shaped arms whose ends are dlsposed above the boom and have rollers confined between the same, a pulley in the lower portion of the carriage or traveler, a yoke attached to the lower part of the carriage or traveler, a rope or cable attached to the latter yoke and passing over a pulley on the mast, a keeper at the lower part of the mast with which said latter rope or cable engages, and having a slot therein with an outer enlarged portion which gradually reduces toward the fastening upon the said keeper,ihe lower end of said latter rope or cable being knotted, a hay fork or grapple attached to and operated by the carriage on the boom and a reinforcing metallic rod on the boom, substantially as and for the purposes specified.

' In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

DAVID OGILVIE.

Witnesses:

J. EGGERS, S. M. HENLEY.