US761159A

US761159A - Hay-derrick.

Info

Publication number: US761159A
Application number: US17920603A
Authority: US
Inventors: Gustaf Garansson
Original assignee: Individual
Current assignee: Individual
Priority date: 1903-10-30
Filing date: 1903-10-30
Publication date: 1904-05-31
Anticipated expiration: 1921-05-31

Description

PATENTED MAY 31, 1904.

G. GARANSSON.

HAY DERRICK. APPLIUATION FILED IOOI. so, 1903.

2 SHEETS-SHEET 1.

N0 MODEL.

IF F, .1 Z 2 V m m Wifgesses 2 SHEETS-SHEET 2.

PATBNTBD MAY 31, 1904. G. GARACNSSONQQ HAY DERRICK. APPLICATION FILED O 0T.30,1903.

' N0 MODEL.

Wifgcsscs iatented May 31, 1904.

PAT NT OFFICE.

GUSTAF GARANSSON', OF ZEANDALE, KANSAS.

HAY-DERRICK.

SPECIFICATION forming part of Letters Patent No. 761,159, dated May 31, 1904.

Application filed October 30,1903.

To all whmn it may concern.-

Be it known that I, GUs'rAF GARANssoN, a citizen of the United States, residing at Zean-' dale, in the county of Riley and State of Kansas, have invented a new and useful Hay-Derrick, of which the-following is a specification.

This invention relates to hay-derricks; and the object thereof is to provide an improved form of hay-derrick in which the elements are so arranged and proportioned as to give a maximum of strength to a minimum of weight and to provide novel mechanism whereby the load may be hoisted and the derrick swung upon its base to bring the load into position for deposit.

A further object of the invention is to provide an improved form of folding derrick the boom of which may belowered with but little difficulty when it is desired to transport the derrick from place toplace and raised and secured with equal facility when it is desired to put the derrick into operation.

With the objects above mentioned and others in view, which will appear when the invention has been fully disclosed, the same consists in the novel construction and combination of parts of the hay-derrick hereinafter described, illustrated in preferred form in the accompanying drawings, and having the novelfeatures thereof particularly set forth in the appended claims.

In the drawings, Figure 1 is a View in elevation of the derrick in position for operation. Fig. 2 is a view of the derrick with the boom f released and lowered for transportation. Fig. 3 is a view in rear elevation of the lower portion of the derrick. Fig. 4 is a'plan view of the folding boom-brace. Fig. 5 is a similar view of the boom. 'Fig. 6 is a plan view of the drum at the base of the mast.

Serial No. 179,206. (No model.)

and heavier than the end-bars, and on it is mounted a plate 3, having a central opening 4 to receive a pivot-pin 5, which is fixed in the center of the mast 6 at the lower end thereof. A plate 7 is attached to the bottom of the mast in order to reduce the friction of rotation of the mast upon the plate 3.

In order to hold the mast in upright position, a plurality of oblique braces 8 (in this instance four in number) are attached at their lower ends to the side bars 1 of the frame F and are connected at their upper ends with a split ring 9 of the character illustrated in Fig. 7 which encircles the mast somewhat above themiddle. The brace members 8 are preferably connected by crossed stay-rods 10, as shown in Figs. 1 and 2. A

The mast-may be of any suitable length and will preferably be square in cross-sec tion, tapering from the middle, where its diameter is greatest to both ends. Blocks will of course be secured upon the mast where it is encircled by the ring 9 in order to afford a continuous bearing-surface for engagement with the ring. The mast may be made of a single stick of timber of suitable dimensions or may be made of a plurality of sections secured together inany suitable manner.

At the lower-end of the mast a drum is formed of horizontal members 11 and vertical when the load is hoisted.

The boom, which is pivotally mounted at 8o .1. members 12, arranged as shown in Figs; 11-1 and 6. This drum forms in connection with 1 a cord 13, which may be attached to any one of the vertical members 12, means whereby to turn the mast through any desired angle Fig. 7 is which passes through the members 14: and 902- through the top of the mast and connected atfiliun their upper ends by means of a plurality of a detail view of the mast-supporting ring; and Fig. 8 is a detail view in vertical section at cross-bars 2. The middle cross-bar is broader by which the two boom members 14 are separated to the desired distance, and the bolt 18 forms the pivotal connection between the brace and the boom members. The outer end of the boom is strengthened by means of too a short truss comprising stay-rods 21, connected at one end with the extremities of the members 14 and connected at their other ends with the members 14 below the bolt 18, the stay-rods being supported at their middle points by a member 22 rising from the bolt 18.

The boom-brace consists of two converging members 23, pivotally supported upon'a bolt 24, which passes through said members 23- and through the mast, and two converging.

members 25, having beveled inner ends supported on the bolt 26 in members 23 and connected with the boom by the bolt 18, already mentioned. The members'23 are strengthened by cross-rods 27 and oblique rods 28, the former being adapted to serve as rungs when it is necessary for a person to climbout upon the brace. In order to secure. the boom members in extended position, a bolt 29 is provided in the outer ends of the members 23 and a block 29 is placed adjacent thereto for contact with the beveled ends of the members 25. j

The means forhoisting the boom and boombrace into operative position comprises a rope 30, attached at one end to a bracket 31, mounted in the lower end of the two members 25 and passing over

pulleys

32 and 33, mounted in said bracket 31 and. in a bracket 34, mounted in the upper end of the mast. The free end of therope 30extends down the mast a short distance and may be wound upon one of the cleats 35, provided at intervals on the mast and on the oblique braces to afford means for climbing the derrick when necessary.

The load-hoisting rope has one end attached to a swivel mounted on the boom at its upper end and passes from the swivel downward under a traveling pulley 37, to which the lifting-tongs may be attached, and passing thence upward over the pulley 19 in the upper end of the boomdownward over .a pulley 39 in a bracket 40, projecting from the mast on the side opposite the boom. The hoisting-rope passes from the pulley 39 downward and under a pulley 41,. attached to the end of the rope 13, its outer end having a whiffietree 42 attached thereto to afford means for hitching a draft-animal to the hoisting-rope. r 1

As explained in the preceding paragraph, the rope 13 is attached to one of the vertical members 12 of the drum at the base of the mast and serves when the load is hoisted on the derrick to effect the rotation of the mast with all the structures carried thereby. To guide the movement of the rope 13,. a guide-pulley 43 is suspended on a rope 44 and is secured by a short rope 45, connecting the pulley with the frame F.

- When the derrick is in operation, the load will be secured by tongs or any other convenient means and suspended from the traveling pulley 37., Power will then be applied to the hoisting-rope by driving a draft-animal outward away from the derrick-frame, and the tension upon the hoisting-rope will lift the. load and at. the same time by pulling against the pulley 41 will exert sufficient tension on the rope 13 to turn the mast and swing the load around to the desired point for deposit.

When it is desired to transport the derrick from one place to another, the bolt 29 must be withdrawn from engagement with the

members

23 and 25 forming the boom-brace, and the rope 30 must be unwound from its cleat 35 to allow the brace members to fold upon each other. and let the boom swing down into the position shown in Fig. 2. When in this position, the derrick may be conveniently .transported, and. when the destinationihas The bevel at the inner ends of the members 25 is so formed thatv when the boom is raised into operative position the said beveled ends of the members 25 contact with the block 29 before the

members

23 and 25 are brought into perfect alinement. The brace is thus characterized by a veryobtuse angle when in operative position, and the strain imposed upon the bracewhena load is hoisted upon the boom tends to force the jointof the brace downward. The tendency of the brace to fold by the downward movement of the joint is directly opposed by the rope30, attached to the bracket 31-and passingover the

pulleys

32 and, 33. Consequently the bolt 29, extending through the adjacent ends of

members

23 and 25, is relieved of any excessive strain and there is no tendency of the members to buckle upward when a heavy load is hoisted by the derrick.

In the construction of the derrick as above described any suitable materials for the different parts may be employed and the proportions and mode of assemblage of the several elements. may be varied without departing from the spirit of the invention or sacrificing any of its advantages. I therefore wish it understood that I do not limit myself to the particular form of the parts illustrated or to the specified mode of arrangement, but reserve the right to make such changes therein as lie within the scope of the appended claims.

Having thus described. the construction and operation of my invention, what I claim as new, and desire to secure by Letters Patent,

1. The combination in a structure of the class described, of a mast, a boom pivotally mounted on the mast, a folding brace for said boom comprising two pivotally-connected members so arranged that the extension of said members into a position of perfect :alinement is positively prevented, and means for locking said brace members in extended position.

2. The combination in a structure of the class described, of a rotatable mast, load-supporting mechanism carried by said mast, a drum mounted on said mast and comprising two pairs of frames, the frames in each pair being parallel and one pair of frames being disposed perpendicular to the other pair of. frames, and a rope secured to said drum for imparting rotative movement to said mast.

3. The combination in a structure of the class described, of a mast, a boom mounted on said mast, and a folding brace for said boom, said brace consisting of two pivotallyconnected members, the pivoted end of one of "said members being beveled and the other member including a block having a beveled face for contactwith the beveled end of the first member to limit the movement of said member and prevent its extension into perfect alinement.

4. The combination in a structure of the class described, of a rotatable mast, loadhoisting mechanism carried by said mast and including a hoist-rope, a drum on the mast, a rope attached to said drum, and a pulley attached to the rope secured to said drum and traveling on said hoist-rope.

5. The combination in a structure of the class described, of a base, a mast pivotally mounted thereon, aboom carried by said mast, a load-hoisting rope carried by said boom, a drum on the mast, a rope attached to said drum, and a pulley mounted on the end of said rope attached to the drum and traveling on said load-hoisting rope.

6. The combination in a structure of the class described, of a base, a mast pivotally mounted on said base, a boom carried by said mast, a load-hoisting rope carried by said boom, a drum mounted on the mast, a rope partially Wound on the drum, a guide-pulley engaged by said rope, and a pulley attached to the end of said rope and engaging said load-hoisting rope.

In testimony that I claim the foregoing as my own I have hereto aflixed my signature in the presence of two witnesses.

GUSTAF GARANSSON.

Witnesses:

F. A. MARLATT, GEORGE O. RAY.