US690513A - Crane for handling lumber, &c. - Google Patents

Description

H. nooKE. CRANE FUR HANDLING LUMBER, &.c'.

(Application filed Apr. 9, 1901.)

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Patented 1an. 7, m02.v

(No Model.)

UNITED STATES PATENT OEEICE.

HENRY BROOKE, OF PATASKALA, OHIO.

CRANE FORGHANDLING LUIVI'BER, 80C.

SPECIFICATION formingpart of Letters Patent No. 690,513, dated January 7, 1902. Application led April 9, 1901. Serial No. 54,976. (No model.)

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Be it known that I, HENRY BROOKE, residing at Pataskala, in the county ofLicking and State of Ohio, have invented certain new and useful Improvements in Cranes for Handling Lu mber, &c., of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to cranes for use in loading and unloading lumber, timber, boxes, 85o., to and from cars and similar locations.

The object of the invention is to produce a crane which may be readily applied in a doorway and will when so applied enable a person by the changing of position of the weight upon the arm of 'the crane and by swinging the same to advance the weight in either direction. The construction of crane by which this is eected is hereinafter described.

Figure l is a broken perspective view of a part of a car, indicating the crane and plank supported thereon. Fig. 2 is an elevation of the crane and standard.v Fig. 3 is a plan of the same. Fig. t is a diagramindicating the movement ofthe crane in advancing a weight.

Let A indicate a strong timber or standard which is of a length to be readily applied to a door-say an end car-door. In the top or bottom or in both ends of this standard there is a clamp-screw B, which may be extended to bind the standard firmly to the jamb of the door. At one side of the standard there are a number of sockets or loops O, two of which are in position to receive the pintles D of a crane-arm E. The sockets or loops C are of such distance apart that the crane can be readily adjusted as to height and when in position will swing on its pintles. The upper face of the crane-arm has two points F and G projecting upward. For ordinary use the arm of the crane may be about two feet, more or less, in length, and the two points F G will be at a distance apart alittle less than twice the width of the lumber it is generally expected to handle on the crane. I

The crane is applied to standard A at such height as is most convenient. Then the operator lifts one end of a plank, timber, or the like, as at l, letting it rest mainly on point G. By raising the other end of the plank and advancing, the crane swings around and carries the plank forward. Then the operator turns the plank over, letting its weight rest on point F, as at 2, and draws back, swinging the crane backward. The backward movement, however, as shown in Fig. 4, is only the distance F F F, Ywhile the advance is as G G G. By this form of manipulation a single man can work a heavy board or plank forward or backward, such as would be quite beyond his strength, without the aid of a mechanical appliance. The crane can be readily adjusted to the proper height to manipulate the lumber thereon by lifting the pintles from the sockets and replacing at a diiferent height. Thus as the pile of lumber grows in a car the crane can be adapted to the height, and vice versa.

For small stations where there are few men and one or two men are compelled to handle heavy planks, dac., this simple device is very efficient.

l. In combination with a supporting-stand ard and a series of sockets thereon, an adj ustable hinged crane-arm having a plurality of projectingpoints on its upper surface, said points being at different distances from the pintle, for the purpose set forth.

2. In combination with a supporting-standard, a hinged' crane-arm having a plurality of projecting points on its upper surface, for the purpose of moving lumber,fsubstantially as described. p In testimony whereof I affix my signature in presence of two witnesses.

HENRY BROOKE. Witnesses:

T. B. FULTON, H. W. EAZZE.

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