US2553955A - Crane - Google Patents

Description

May 22, 1951 w. w. BERCHTOLD CRANE Original Filed Feb. 6, 1945 INVENTOR Ema/raw XM S ATTORNEY Patented May 22, 1951 CRANE Wallace W. Berchtold, York, Pa., assignor to American Chain & Cable Company,

Inc.,

Bridgeport, Conn., a corporation of New York Original application February 6, 1945, Serial No. 576,414. Divided and this application January 3, 1947, Serial No. 720,118

2 Claims.

This application is a division of my co-pending application 576,414, filed February 6, 1945, now Patent No. 2,419,813, granted April 29, 1947, for a Crane.

The invention relates to a crane having general application but constructed particularly for garage use, such as for the removal of the engine or motor of cars and especially for the removal of the motor from the rear end of a bus.

It is an object of the invention to construct a crane having general utility and also particularly suited for removing the rear end mounted motor of a bus.

Another object of the invention is to construct a new and novel portable crane having a plurality of crane arms.

Another object is to construct a crane having a general utility arm and an additional arm or boom particularly suited for removal of the rear end mounted motor of a bus.

Other objects of the invention will be more apparent from the following description taken in connection with the accompanying drawings illustrating the preferred embodiment thereof in which:

Figure 1 is a side elevation of the crane using two arms for the removal of a bus motor shown diagrammatically in dot-dash lines.

Figure 2 is a top view of the crane.

Because of the limitations of space in the location of the motor at the rear end of a bus, it is difficult to remove the same therefrom. Such motors are heavy and require the use of a crane for their removal. The crane herein is provided with a plurality of arms, one of which may be usedfor general lifting purposes and the pair of arms are used particularly for the removal of the motor of the bus in the confined space in which said motors are mounted.

The crane provides a frame of any suitable form, that illustrated including a U or horseshoe shaped lower frame It provided with a cross bar II. A vertical standard I2 is carried by the cross bar. The vertical standard is braced by means of bars l3 extending from the top of the standard on each side thereof and to the U-shaped frame. A brace M also extends rearwardly from the standard to the rear of the U-shaped frame. One of the braces l3 may carry rods [8 at spaced intervals to form a ladder. The frame may have swivel wheels l5 on the ends of the U-shaped lower frame and awheel [6 at the bend in the U. This construction of U-shaped frame permits the load to be straddled by the arms of the U for ease in attaching the hoist hook and in lifting a load whereupon the crane and load may be moved away.

A bracket ll at the top of the vertical standard carries a slide 89 which receives an arm 2!! slidable therein so that the arm may be extended or retracted as desired. Any suitable means may be used to lock the arm in its adjusted position, the means particularly illustrated including a series of holes M which receive a lock pin 22 carried by the slide.

The hoisting means may take any desired form, that illustrated being a manual hoist carried by the frame and slidable arm. The hoisting means includes a drum, which may be in a housing 24, carrying a cable 25 which drum is rotated by a handle 25 preferably connected by a self-locking worm to the drum shaft 2?. The drum and its mechanism is mounted upon the brace M. The cable extends over a pulley 28 mounted upon the bracket I1 and then over a pulley 29 carried upon the end of the adjustable arm 25, the cable conneoting with a snatch block 33. The snatch block carries a hook 3! for supporting a load directly from the arm 26 or for attachment to a secondary arm.

The crane is provided with a plurality of arms, which includes the adjustable arm 26 and a boom or secondary arm 35 which is swingable vertically on a pivot 38 carried by a bracket 3 This bracket is mounted upon the standard l2 and preferably is slidable thereupon for adjusting its vertical position. The adjustment mechanism includes a plurality of holes 33 in the standard which receive a lock pin 39 carried by the bracket 31 to support the boom in adjusted position or elevation. The boom carries an attaching bracket it to receive the hook 3! of the snatch block 38 which bracket may be adjustable along the length of the boom. Three adjustment positions are shown represented by the holes 4| located along the length of the boom which holes receive a locking pin 42 carried by the attaching bracket. The boom may carry a hook 43 shown at the outer end thereof to carry the load supported by the boom. The pivot 36 not only permits the boom to swing vertically but enables it to swing downwardly out of the way when not in use either in front of the standard as shown in dotted lines in Figure 1 or it may be rotated and hang out of the way on the other side of the standard.

The boom 35 may be adjusted in its elevation or vertical position so that it can project into the limited space above the motor in the motor hood at the rear end of the bus whereupon the motor is secured to the hook 43 such as by cables or other means and lifted ofi of its supporting structure by the hoisting means. The crane may then be moved to Withdraw the engine from the bus. The adjustment of the boom enables it to be fixed at the proper elevation for whatever job it is intended to perform in some confined space. The adjustable position for the attaching bracket ii permits variation of the leverage applied to the boom and also permits the boom to extend into the bus hood without interference with the snatch block. When the boom is in use the upper arm 26 may he slid to any one of its retracted positions, Figure 3 showing the arm retraced substantially its full length.

This invention is presented to fill a need for improvements in a crane. It is understood that various modifications in structure, as Well as changes in mode of operation, assembly, and manner of use, may and often do occur to those skilled in the art, especially after benefitting from the teachings of an invention. Hence, it will be understood that this disclosure is illustrative of preferred means of embodying the invention in useful form by explaining the construction, operation and advantages thereof.

I claim:

1. A crane comprising a U-shaped frame, a cross bar adjacent the closed end of the frame, a vertical standard carried by the cross bar, braces extending from the top of the standard to the U-shaped frame, an arm carried by the upper end of the standard for projection therefrom by diiferent amounts, hoisting means mounted upon one of the braces and on the arm, a secondary arm mounted on the standard for vertical pivotal movement, said hoisting means being connected thereto, and said arm having load carrying means on the end thereof.

2. A crane comprising a frame including a vertical standard, a slide carried by the upper end of the frame, an arm carried by the slide and adjustable horizontally with respect to the standard, hoisting means carried by the frame and arm, a bracket carried by the standard intermediate the ends-thereof, a boom pivotally carried by the bracket for movement in a vertical plane, means carried by the boom for connection with the hoisting means, and means upon the end of the boom for supporting a load.

WALLACE W. BERCHTOLD.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 450,695 Lindsey Apr. 21, 1891 704,836 Kauffman July 15, 1902 871,500 Hadley Nov. 19, 1907 874,553 Williams Dec. 24, 1907 1,229,507 Parker June 12, 1917 1,489,161 Schuchert Apr. 1, 19-24 1,614,697 Snook Jan. 18, 1927

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