US1668578A - Crank handle - Google Patents

Description

May 8, 1928.

F. J. WEKWERT CRANK HANDLE Filed Aug. 29. 1927 Patented May 8, 1928.

UNITED STATES FRANK J. WEKWERT, 0F BAYONNE NEW JERSEY.

CRANK HANDLE.

Application filed August 29, 1927. Serial No. 216,196.

The present invention relates'to improvements in crank handles such as are commonly used in cranking an internal combustion engine.

One of the important objects of the present invention is to provide a crank handle wherein a cranking wheel is associated with the usual hand engaging portion of the crank in such a manner as to prevent any possibility of the operator sustaining injury should the internal combustion engine back fire while being cranked.

A further object of the invention is to provide a crank handle which is simple in construction, inexpensive, strong and durable and further well adapted to the pur pose for which it is designed.

Other objects and advantages will become apparent during the course of the following description.

In the accompanying drawing forming a part of this application and in which like numerals indicate like parts throughout the same:

Figure 1 is a side elevation of the crank handle embodying my invention, and

Figure 2 is a front elevation of the cranking wheel.

In the drawing wherein for the purpose of illustration is shown the preferred embodimentof my invention, the numeral 1 designates generally the crank handle which is of the conventional construction, the same being provided with the pin engaging member 2 on one end which cooperates with the pins or studs of the crank shaft of the internal combustion engine in the manner well known in the art.

The usual hand engaging portion 3 of the crank is in the present instance formed with a longitudinal bore whereby said hand engaging portion is rendered hollow, and the purpose thereof will be presently described.

Extending loosely through the bore of the hand engaging portion 3 is the shaft 4:. A cranking wheel or disc 5 is secured on the outer end of this shaft for disposition adj acent the outer end of the hand engaging portion 3 of the crank 1 and as is clearly illustrated in. Figure 2 the cranking wheel is of a solid construction.

A cotter pin or the like shown at 6 extends through the inner end of the shaft 4 through a suitable opening provided therefor for preventing the displacement of the shaft from the hand engaging portion 3.

The manner in which the operator grasps the cranking wheel 5 while in the act of actuating the crank handle to start the internal combustion engine is shown in the dotted lines in Figure 1, and it will be observed that the arm of the. operator is entirely out of the path of movement of the hand engaging portion 3 of said crank handle, thereby preventing any possibility of the operator sustaining injury should a back fire occur during the cranking of the engine.

The simplicity of my improved crank handle enables the same to be constructed at a very low cost and furthermore the crank ing wheel will not present an unsightly appearance and will furthermore at all times be positive and eliicient in carrying out the purposes for which it is designed.

While I have. shown the preferred embodiment of my invention, it'is to be understood that various changes in the size, shape and arrangement of parts may be resorted to without departing from the spirit of the invention and the scope of the appended claim.

Having thus described the invention, what I claim as new is:

In a crank handle, wherein the usual hand engaging portion thereof is hollow, a shaft extending loosely througl'i the hand engaging portion, a cranking wheel secured on the outer end of the shaft, and means carriedby the inner end of the shaft for preventing the casual displacement of the shaft from the crank handle. 7

In testimony whereof I aflix my signature.

FRANK J. WEKWERT.

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