US1029868A

US1029868A - Motor-cranking device.

Info

Publication number: US1029868A
Application number: US62761611A
Authority: US
Inventors: Homolya Frederick
Original assignee: Individual
Current assignee: Individual
Publication date: 1912-06-18
Anticipated expiration: 1929-06-18

Description

. To all whom it mag/ concerm of the usual coupling between the motor and 1,029,868. MOTOR-CRANKING DE- VICE. Fiiizoizincic llmioLvA, Kenosha, Wis. Filed Nay 16, 1911. Serial No. 627,616.

Be it known that I, Fanoizaick lloaiom'a, citizen of the United States, residing at lienoslia, in the county of Kenosha and State. of \\'iseonsin, have invented certain new and useful linproven'ients in Motor-Crankng Devices, of which the following is a specification. A Q

rlhis invention relates to devices for cranking autoiuobile and similar motors and aims primarily to )rovide against injury to the operator sliouhl the engine back tire.

The invention also aims to obviate the use cranking shaft, the cranking shaft., in the instance of the present invention, being per manently connected with the motor-shaft and carrying a ratchet which at all times rotates therewith. The cranking handle is rotatable independently of the ratchet and carries a iawl which is normally held disengaged troni the ratchet. and includes a handle portion extending beside the crankhandle in position for convenient manipulation by the operator to clutch the crank-handle with the ratchet. when itv is desired to crank the motor. The means which is pro. vided for normally holding the pawl disengaged from the ratchet, serves to automati cally disengage the pawl should the engine, hack firc, thereby allowing the ratchet to.; rotate inde endently of the crank-lnuidle.

For a fu l understanding of ilie invention reference is to be had to the following dc-l scription and accompanying drawing, ine which Figure l is a perspective view of the de-i viee applied to an automobile. Fig. .2 is a group view illustrating the device in posi`l tion to be assembled, with the crankingl shaft. Fig. Il is a rear elevation of the deviee in condition to be operated to crank the motor. Fig. 4 is a section on the line t --t of Fig. 3.

('orresponding aiid like parts are referred to in the following description and indicated in all the views of the accompanying drawing b v the same reference characters.

ln the drawing, the numeral l indicates a 5 cranking shaft. which is permanently con--` nected with the motor shaft aiul has' a squared portion 2 and a reduced threaded end fl. A ratchet 4 is held upon the squared portion Q of the shaft by means of a washer 3^ and nut 3 and has a hub 5 which is grooved circumfcrentially as at 6.

The cranking handle has a head 7 which is recessed in one side to receive the body of the ratchet 4, the hub of the ratchet fittin in an opening 8 formed in the said head.

.recess in which the body of the ratchet is the pawl in position with the free end of its teeth of the ratchet and when the cranking 5 'handle is rotated, the said ratchet. and the pin il is removably fitted transversely through the head 'i' and engages in the groove 6 in the linb of the ratchet and serves to prevent. g disengagement of the crank-handle from the At. its outer end, the cranking ,rear side, of the cranking handle 'i' above an 'l 'opening l-l formed in the wall of the recess -Q in which the body of the ratchet 4 is received, and a handle portion 14 which exand terminates at. its end adjacent. the handgrip 10. The head l1 of the pawl is formed with :i tooth 15 which is designed to cooperate with the teeth of the ratchett and head. formed with a toe 16 against. which bears a leaf spring 17 secured to the adacent. side enf-spring of the cranking handle 7. This pawl disengaged from the ratchet and rest-s against the adjacent end of tliewall of the received. This spring also serves to hold handle portion projecting atV an angle laterally beyond the cranking handle 7, so that when the operator grasps the hand-grip 10 of the said cranking handle, the end of the handle of the pawl will be in convenient position for depression by his thumb. By thus manipulating the pawl, the tooth 15 will be brought into engagement. with the cranking shaft 1 will also be rotated.

It will be understood from inspection of the drawing` that. after the handle of the pawl has been depressed to move. the teeth if into engagement with the ratchet Il, and

`initial pressure has been brought. to bear upon the crankingr handle, in u direction to crank the motor, the thumb may be disengaged from the pawl without releasing the same.

ie grasped for the purpose of rotends in the rear of the cranking handle 7 this tooth is located to one side of the said I .\t. its opposite side, the head is serves to normally hohl the tooth of the In cranking the engine of an automobile it is customary to iin art to the cranking handle a quick and orceful n )ward pull and this imparts to the piston of the engine momentum sutlieient to drive or throw the piston iiineardly within the cylinder beyond the point to which it. would be carried if a slow upward pull was exerted upon the g nient of the tooth 15 o vice from the said ratchet. The spring 17 handle and this further movement of thc piston in the. cylinder rotates the engine shaft sufficiently far to momentarily advance. the ratchet 4 to rinit of disenga efxthe pawl of the. ie-

' crank-handle.

. shaft-carried ratchet, a crank-handle rota-4 then immediately acts to move the pawl ont of position for farther engagement with the ratchet and should the engine back fire the ratchet would be free t0 rotate baekwardly.

Having thus described the device what 1s claimed as new is 1. In a device of the class describetha shaft-carried ratchet, a crank-hamlle rotatable upon the ratchet independently thereof a pawl comprising a head pivoted to the crank-handle and having atone side a tooth arranged to cooperate with the ratchet, and a hamlle extending from the head beside the ,crank-handle, aml a spring bearing against that side of the head opposite the side at which the tooth is located and normally holding the pawl with its tooth disengaged from the ratchet and with the end of its handle projecting laterally beyond the.

2. In a device of the class described, a'

table upon the ratchet independently thereof and having a flange part-ly surrounding the ratchet, a pawl comprisingr a head pivoted a on the crank-handle and having at one sitle a tooth arranged to cooperate with the ratchet and having at its opposite side a t'oe arranged to abat. against one end of' said flange surrounding the ratchet, and a spring carried by the crank-handle and' hearing against the said toe and tending to more the pawl to position with its tooth ont. of engagement with the ratchet and its toe in engagement. with said end of the flange.

In testimony whereof, I affix my signal ture in )resence of two witnesses.

FR DERICK HOMOLYA. [1.. 8.] \Vitnesses: l I. R. Sommo, ,l IIENnr IV. BmNaMaNN.