US1426139A - Hoisting machine - Google Patents

Description

'C, W. ANDERSON.

HOISTING'MACHINE.

APPLICATION FILED JUNE 24, 1920.

1,426,139, I Patented Aug. 15, 1922 w re time FATENT @i f iflfi.

norsrrns MACHINE.

Application filed June 24,

T 0 all whom it may concern:

Be it known that 1, CHARLES W ANDER- SON, residing at Brooklyn, in the county of Kings and State of 'New York, have in vented certain new and useful Improvements in Hoisting Machines, of which the following is a specification.

This inventionrelates to a hoisting machine, and an object of the invention is to provide a simple and efficient and compact hoisting mechanism comprising a hoisting drum with its control elements and an explosive engine of standard type associated with and connected for operatlng the hoisting drum. I V

in the accompanying drawings which are to be taken as a part of this specification, and in which I have shown merely a preferred form of embodiment of the invention: I I

Figure l is a side elevational view of a hoisting machine constructed in accordance with this invention, and

Figure 2 is a top plan view of the structure seen in Fig. 1.

Referring to the drawings for describing in detail the structure which is illustrated therein, the reference character L indicates the hoisting drum mechanism, while the reference character G indicates the engine. These two elements are mounted upon a single heavy base or foundation piece H.

The hoisting drum mechanism consists of a drum 1, mounted to rotate freely upon a shaft 2 which is rotatably supported in bearing standards 3. Rigidly mounted upon the shaft 2, at one end of the drum 1, is a large gear wheel 4, the teeth of which stand in constant mesh with the teeth of a gear pinion 5 mounted upon the main shaft 6 of the engine G. The drum 1 is provided with a cone-shaped clutch surface 7 at its end adjacent the gear 4, and the gear 4 is provided with a corresimndingly shaped clutch surface, 8 with which the surface 7 engages when it is desired to drive the drum by means of the gear, as will be readily understood.

A suitable frame part 34 is provided carrying a screw 14 having an operating handle 20 for controlling this clutch in the usual manner.

The drum 1 is provided with a brake band 40 having one of its ends fixed, as at 41, and having its other end, as 42, connected with a lever 43 mounted upon a shaft 44 carrying A Specification of Letters Patent. Patented A g 15 1922" 1920. Serial No. 391,405. r

a foot lever 45. Pressure of the operators foot upon the lever 45 will draw the brake band tight to oppose rotation of the drumf A counter weight 46 is' carried by an ex- P81181011 piece 47 of the foot lever 45, projecting beyond the shaft 44, said counter weight being adjustable along the extension 47 for altering its counter-balancing value and being furnished with a set screw 48, or the like, by means of which it may be held in any posltion of adjustment.

The drum is also wheel 49 arranged to be engaged by a pawl 50 to positively hold the drum against rota tion in one direction. The pawl 50 may be mounted for operation in any desired manner but preferably is carried by a short shaft 51 which has connected therewith a hand lever 52 projecting to a convenient position to be manipulated by the operator. The lever 52 is preferably weighted, as at 53, and is so disposed that it will stand by gravity in either a gripping or non-gripping position.

Assuming that the engine G is operating, the gear pinion 5 and large gear 4 rotate continuously. The drum 1 may be caused to rotate with the gear 4, or not, according to the will of the operator. To cause rotation of the drum the operator has simply to press down the lever 20 for engaging the clutch provided with a ratchet 7-8. Lifting of the lever 20 will release the clutch 78. Rotation of the drum, while the clutch 7-8 is released, may be controlled by the brake lever 45, it being understood, of course,-that rotation of the drum, while the clutch 7-8 is released, is usually a rotation imparted to the drum by the unwinding of rope or cable which was wound upon the drum while the clutch was in engagement, as forinstance in the lowering of a load previously lifted.

The pawl 50 may be moved into engagement with the ratchet 49 whenever it is desired to positively hold the load elevated.

It will be seen that thus through the arrangement of foot and hand levers described a single operator may conveniently and effi- "ments of the device into compact and efli cient relationship with each other and to at the same time enable the use of a standard explosive engine. In this c nnection it is to be particularly noted that the foundation member 11 supports the hoisting mechanism L and the engine G in what might be termed an overlapping position and yet in a position where the full functions of each element are obtained without interference one with the other. For instance, the two counter-balance, or fly wheels, 5 l55, at opposite sides of and forming parts of the engine, extend into positions overlapping opposite ends of the drum, the large gear iat the same time lapping inside of the counter-balance wheel 54 and correctly and efficiently interineshing with the pinion 5. The bearings 3, carrying the drum, are formed in standards which conform to the shape and position of the counterbalance wheels 5l55, and the levers 20 and 4-5 lap back again over the outer surface of the counter-balance wheel 55, amarked economy in space being thus provided. The correct functioning of all the parts of the hoisting mechanism is fully provided for, and the same is true regarding the engine. At the same time the hoisting drum is directly connected with the engine so that the possibility of trouble and annoyance regarding the con nections is reduced to a minimum. A high degree of efficiency is also attained.

As many changes could be made in this construction} Without departing from the scope of the invention as defined in the following claim, it is intended that all matter contained in the above description, or shown in the accompanying drawings, shall be interpreted as illustrative only and not in a limiting sense.

Having thus I claim as new and desire to secure by ters Patent is The combination with a gas engine of standard type comprising a drive shaft, an explosive cylinder for driving said shaft, a pinion fixed upon said drive shaft, and a pair of fly wheels also fixed upon said drive shaft spaced apart at opposite sides of the engine, of a hoisting drum positioned partly between said fly Wheels, a carrying shaft for said drum arranged substantially parallel to said drive shaft, a pair of bearing standards for said carrying shaft, a common base from which said engine and said standards rise, control levers for the drum closely adj acent the engine, and a drive gear for said drum fixed to said carrying shaft being positioned partly between said fly wheels and directly intermeshing with said pinion.

In testimony whereof I afiix my signature in the presence of a witness.

CHARLES N. ANDERSON. lVitness:

MAY A. SoHULz.

described my invention, what Let-

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