US1071990A - Cranking device. - Google Patents

Description

Patented Sept. 2, 1913.

2 SHEETS-SHEET 1.

Llamas ZiEasis a 0 We J. B. EASTES.

CRANKING DEVICE.

APPLICATION FILED JUNE 23,1911.

1,071,990. Patented Sept. 2,1913.

2 SHEETS-SHEET 2 JAKES B. EAS'IES, OF KONAWA; OKLAHQMA.

anemone iisvron.

Specification of Letters Patent.

"started Sept. 2. 1913.

Application filed June 23, 1911. Serial No. 634,934.

To all whom it may concern:

citizen of the United States, residing at Konawa, in the county of Seminole and State of Oklahoma, have invented certain new and useful Improvemehts'in Cranking Devices, of which the following is a specification.

This invention relates to cranking devices for explosive engines and is designed more particularly for use upon motor driven vehicles and aims, primarily to provide means whereby the engine shaft may he cranked without the necessity of the operator of the engine leaving his seat.

The invention aimsfurther to provide a cranking mechanism so constructed that the initial operation. of its actuating means will serve to move the crankin shaft. into clutch go with the engine shaft, on subsequent actualion of such means will serve to rotate the cranking shaft.

Another aim of the invcntionis, to so con struct the cranking mechanism that should the engine bock'fire the cranking shaft will be entirely free to rotate and no inconven ience will ioe caused the operator of the machine. V

A. further aim of the invention is to so construct the cranking mechanism thatit mav be readily adjusted for 'use in connection with engines which are more or less di'fiieult to crank.

For a full understanding of the invention reference is to behsd to the following description and accompanying drawing, in which z- I i Figure 1 is a plan view of the mechzinism mounted upon the frame of ,a motor driven vehicle. Fig. 2 is 21- vertical transverse sectional view onlt he line '22 of Fig. 1. Fig. 3 is a lon gitudin'a lssectional View on the line 3---3 6f ldig. 1. Fig. 4 is arcar elevation, in detail, of a. portion of the mechanism. Fig. 5 is 3 verticallongitudinal sectional View onthe line of Fig. 4. Fig. 6 is a detail view partly in elevation and partly in section illustrating the support for the mechanism shown in 4 and 5. Corresponding andlike parts are referred to in the following description and indicated "in all the views of theaccornpanying'drawings by the some reference characters. In the drawings, only the forepart of the 55 frame of the vehicle is illustrated and of this portion of the frame the chassis {beams are indicated by the numeral 1 and the front axle by the numeral 3 indicates the usual. apron which depends from the front of the radiator and which serves as a support for the usual cranking shaft.

The engine shaft is indicated by the numeral 4: and is provided at its forward end with clutch head 5. In place of the cra nle lug shaft usually provided there is, in the present instance, provided a cranking shaft (3 which is rotatably and slidnhly fitted through the apron 3 and is provided at its rear end, with a clutch head 7' designed to cooperate with the clutch head 5 when the cranking shaft is shifted roarwardly. The

shaft (3 is threaded as indicated by the nu-K ineral 7 and is preferably headed at its forward end as at A collar 9, interioriy threaded as at 10 is fitted upon the threaded. portion of the cranking shaft 6 and is designed to he moved longitudinally upon this shaft and, during such movement is to he held relatively fixed whereby to rotate the said cranking shaft. and import corresponding, movement to the engine shaft 4. A collar 11 fitted upon the collar 9 and the collar 9 is free to rotate within the collar 11 under conditions which will be presently explained. The collar 9 is formed, peripherally with a number Of notches 12 and a number of pavvls 13 are pivoted as at 14. within a recessed side of the collar 1i :ind engage lhcir free ends in the notches l2.

Springs 15 are engagedriutheir ends over studs {16 and 17 upon thewi ll of; the recess in the collar 11 and each pawl 13 respectively it heingsmderstood that those serve-to yieldobly hold the puwls in engagement in the said notches.

A collar 18 is fitted upon the collar ll su" the said collar 11 is rotatnhie Within the co lar 18 independently thereof. under conditions which Wiii he presentiy explained in connection with the description of the operation of the device. The collar 11 is formed peripherally with a number of notches 19 and pawjis 20 are pivoted upon the periphery of the collar 18 and proiect throughkopenings 21 therein and seat at their free ends in the notches 19. A leaf-spring 22 is rovided for holding eaoh'pawl 20 in yielda le engagement in its respwtive'notch 19 and each of these leaf-springs is formed with a slot 23 through which a. set-screw Q4 engaged, the set-screw being threaded into the collar and serving to hold the spring in place, its free end bearing against the shank of the respective pawl 20, in the manner illustrated in Fig. 4 of the drawings.

It wilt be readily understood at this point.-

tl -at by loosening the set-screw 24 and sliding the springs 22 in the direction of the extent of their slots 23, and then tightening the a rews, the tension of the springsinay be ad jasted so that a greater or less force will be required to be exerted upon the collar 1] to rotate the same.

it lever-arm 25 is pivoted at one end as at 26 to a bracket 27 secured to one of the chassisbeams 1, preferably the left-hand one, and this arm is formed at a point between its ends with an annular head 28 through which are threaded, at diametricallv opposite points, screws 29 having their outer ends fitting in apertures 30 in ears 31 which are-formed or secured upon one face of the collar 18. By so connecting the leverarm 25 with the'collar 18, this collar together with the collars 9 and 11 may move along the cranking shaft without danger of binding thereon. A rod 32 is connected to the end of the lever-arm 25 opposite its piv-' oted end and-to a foot-lever 33 carried in the front of the car. tween the lever-arm 25 such that when the foot-lever is rocked forwardly, the arm will be swung rearwardly upon its pivot and will move the collars 9, 11 and *18 alon the cranking shaft. A spring 34 is fitted upon the threaded portion of the shaft and bears at its forward end against the collar 9 and at its rear end against a collar 35 said cranking shaft and this spring serves to yieldably hold the collar 9 against rearward movement upon the said shaft and also serves to shift the collar forwardly after it has been moved rearwardly to rotate the shaft, and is released. A spring 36 is also arranged upon the cranking shaft and bears at its forward end a ainst the said collar 35 and at its rear end against the apron 3 through which the shaft is mounted and this spring serves to yieldably hold the cranking shaft at the forward limit of its movement and out of clutc with the engine shaft.

In operating e device the foot-lever is depressed, whereupon the arm 25 will be swung rearwardly forcing the collar 9 in a' The connection beand foot-lever 33 is 7 corresponding direction along the'threaded portion of the cranking shaft. The pawls 13 serve to hold this collar against backward rotation and the pawls 2O serve to yieldably hold the collar 11 against rotation to the left in Fig.4 of the drawing, the spri 22 being so adjusted that the collars 9 an 11 I will be-helid relatively fixed so that. the. cranking shaft will 7 biezrotabed. The SP1" 0' 36 is of less strength than the spring 34, an

"collars 9 and which is fixed upon thethe firstmentioned as a consequence the initial backward movement of the lever arm 25 will result in the cranking shaft being shifted rearward]; to bring its clutch head 7 into engagement with the clutch head 5 at the forward end of the engine shaft. Further mmren'ient of the lever arm in the direction stated, will however, result in the collar 9 and the related collars 11 and 18 being moved rearwardly along the cranking shaft to rotate the. same in the manner above described. Should the engine back-ire, the rotary movement imparted to the cranking shaft will be transmitted to the 11. and these collars will be rotated in unison, the holding force of the pawls 20 being overcome.

- When the engine has been cranked, the footiever is spring 34 will automatically return the (301-, lar 9 to its original position, the collar, how

ever, rotating upon the shaft in a direction toward the right in Fig. 4 as it moves forwardly therealong.

The forward end of the cranking shaft- 6 projects beyond the end 28 of the l ver arm 25 and has its projecting portion squared as at 37 for the engagement therewith of an ordinary cranking handle by means of which. the engine may be manually cranked, if desired. By adapting thedevice to be manually cranked by the crank handle, the motor may be cranked when it is being repaired, without the necessity of entering the car.

Having thus described the invention what is claimed as new is 1. The combination with an engine shaft, of a threaded cranking shaft arranged to be clutched therewith, a threaded member movable along the cranking shaft and arranged by such movement to rotate the said crank-' i ng shaft, means yieldably holding the member against rotation in one direction, and means for moving the said member along the cranking shaft.

2. The combination with an engine shaft, of a threaded crankin shaft arranged to be clutched therewith, a threaded member movable along the cranking shaft and arranged by such movement to rotate thesaid shaft, a member fitted upon the first mentioned member and movable. therewith, a pawl carried by the last mentioned member and 00- operating with the first mentioned member whereby to hold the same against rotation in one direction, means yieldably holding the last mentioned member against rotation, and means for moving the threaded member along the cranking shaft.

3. Thecombination with an engine shaft, of a threaded cranking shaft arranged to be clutched therewith, a threaded. collar upon the cranking shaft arranged for movement therealong'and, by such movement to' rotate the said cranking shaft, a collar fitted upon collar, a pawl carried by relieved of pressure and the of the drawings,

one of said collars and cooperating with the other collar whereby to hold the first mentioned collar against rotation independently of the second mentioned collar in one direction, a spring pressed pawl cooperating with the last mentioned collar and yieldably holding the same against rotation in one direction, and means for moving the said collars along the cranking shaft.

4. The combination with an engine shaft, of a threaded cranking shaft arranged to be clutched therewith, a threaded collar upon the cranking shaft movable therealong and arranged by such movement to rotate the said cranking shaft, a collar fitted upon the first mentioned collar, the first mentioned collar being rotatable independently of "the second mentioned collar in one direction, means holding the first mentioned collar against rotation independently of the second mentioned collar in the opposite direction, a collar within which the second mentioned collar is rotatably fitted, yieldable means upon the last mentioned collar cooperating with the second mentioned collar to yieldably hold the second collar against rotation within the last mentioned collar, and means connected with the last mentioned collar for moving the same and the first and second mentioned collars lengthwlse of the crank ing shaft.

5. The combination with an engine shaft, of a threaded cranking shaft arranged to be clutched therewith, a threaded collar movable along the cranking shaft and arranged by such movement to rotate the said cranking shaft, a collar within which the first mentioned collar is rotatable, means for clutching the first and second mentioned collars to hold the first mentioned collar against rotation in one direction, independently of the second mentioned collar, a collar within which the second mentioned collar is rotatable, the second mentioned collar being formed with a peripherally located notch, a pawl carried by the last mentioned collar and engaging in the notch in the periphery of the second mentioned collar, a spring bearing on the pawl, means for adjusting the tension of the spring, and means connected with the last mentioned collar for moving the same and the first and second mentioned collars along the cranking shaft. -6. The combination with. an engine shaft, of a threaded cranking shaft arranged to be clutched therewith, a threaded collar on the cranking shaft movable therealong and an ranged by such mm'ement to rotate the said cranking shaft, a collar-within which the first mentioned collar is rotatable, means holding the first mentioned collar against rotation independently of the second mentioned collar in one direction, means vielcl ably holding the second mentioned collar against rotation in one direction, a collar fixed upon the cranking shaft, the said cranking shaft being movable longitudinally into clutch with the engine shaft, a spring upon the cranking shaft bearing against the first and last mentioned collars and yieldably holding the first mentioned collar against movement along the said cranking shaft, and a spring upon the cranking shaft bearing against the last mentioned collar and yieldably holding the cranking shaft against movement into clutch with the engine shaft.

In testimony whereof, I affix my signature in presence of two witnesses.

JAMES B. EASTES.

\Vitnesses:

\V. H. HOLMAN, RENE HOLMAN.

Copies of this patent may be obtained for five cents each, by addressing the "Commissioner of Patents, Washington, D. 0."

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