US1024000A - Engine-starter. - Google Patents

Description

W. D. EVBRL'Y.

ENGINE STARTER.

APPLIOATION IILED MAY 26,1911.

Patented Apr. 23, 1912.

Inventor Witnesses Attorneys WILLIAM EVERLY, F SANG-ER, TEXAS.

ENGINE-STARTER.

Specification of Letters Patent.

Application filed May 26, 1911. Serial No. 629,609. I

To all whom it may concern:

Be it known that I, WILLIAM D. EVERLY, a citizen of the United States, residing at Sanger, in the county of Denton and State of Texas, have invented a new and useful Engine-Starter, of which the fOllOWiDg'IS a specification.

It is the object of the present invention to provide a device whereby the shaft of an internal combustion engine may be rotated, to efiect a starting of the engine, without "danger to the operator, resulting from a reverse rotation of the shaft, due to backfiring. f

Specifically, it is the object of the present invention to provide novel means whereby a lever-carried pawl will be forged into engagement with a ratchet upon the engine shaft, when the lever is thrown in one direction, the construction, howeverbeing such that the pawl will normally be maintained out of engagement with the ratchet, thereby permitting a free rotation of the engine shaft.

A further object of the inventionis to provide a means whereby the pawl will be .moved out of engagement with the ratchet, should a forcible, reverse rotation of the shaftoccur, dueto back-firing. With the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the com- 'bination and arrangement ofparts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of invention herein disclosed can be made within thescope of what is claimed without departing from the spirit of the invention.

with an outstandingmarginal flange 3. The engine shaft extends through the case 1, and is denoted by the'numeral 4. Fulcrumed intermediate its ends upon the engine shaft 4, is the crankor operating "memher 5. Pivoted, as denoted by the numeral In the drawings-Figure 1 shows the in-- porting structure 1, is a case 2, provided Patented Apr-23 1912..

6, intermediate its ends to the ioperating" lever or crank 5, and located above: thefilil crum of the lever, is a pawl 7, oneen'dfiflof which is adapted, under circumstances to be described hereinafter, to engage with a ratchet wheel 9, which is secured to'the -engine shaft 4. To the opposite end of the pawl 8 there is pivoted, as shown at m.- a Z link 11, the: outer end of which is pivoted as shown at 12, between ears 14, formed upon the under surface of a segmental shoe 15, disposed in close relation to the outstand- "1 ing flange 3 of the case 2. One end .16 of a spring strip 23, bears as shown at 17, on the end 8 of the pawl 7 extends around the case 2, in the'interior thereof. The other end of the-spring 23 This spring strip 23.

bears, as shown at 18, upon the under face of the pawl 7, upon the opposite side of the point of suspension 6 of the pawl, from that end 8 of the pawl which is adapted to be engaged by the ratchet wheel 9. The inter-- mediate portion of the spring 23 is engaged by a stud 19, projecting rearwardly from the lever 5, below the engine shaft 4. The invention further includes an auxiliary spring, one end of which is secured, as

shown at 21 by a rivet or otherwise, to the lower end of the pawl 7 adjacent the point where the spring 23 bears against the pawl. The other 'end of the auxiliary spring 20 bears against the outer. edge of the link 11.

When the device is-not in use, the parts will be positioned as shown in Fig. 1, the end 8 of thepawl 7 being, under such cirr cumstanoes, uplifted, and held free from the ratchet wheel 9. The construction,therefore, is such that the engineshaft 4 may rotate freely, without interfering I with the starting 'devicein any manner. v

The ends 17 and 18 of the spring 23=cq-act to tilt the pawl 7 in such a manner thant e' link 11 and the shoe 15 wi11 be'thrus't out,-'

wardly toward the rim 3 of the' case'. The

spring" 20 serves to thrust-the shoe 15 inthe f direction of the arrow A, and consequently the end 8' of the pawl .7 is held out of en gagement with the ratchet wheel 9;

When it'is desiredto impart a rotationto theshaft 4',"by means of the crank 5, the upper, free end of the shank is swung in the. direction of the arrow A in Fig. 1.. Under such circumstances, the shoe 15, engaging e frictionally'with the rim 3,- will act as a drag, tiltinggthe pawl"? until its end 8 is engaged with the -ratchet wheel 9, whereice upon the ratchet wheel and the shaft 4 may be rotated by means of the crank 5. As

.soon as the engine shaft 4 starts to rotate,

gine should back-fire during the time that' the pawl 7 is engaged with the. ratchet wheel 9, the lever moving in the directionof the arrow A, a slight movement will be imparted to the lever 5, in a direction opposite to that indicated by the arrow A. Under such circumstances, the spring 20 will hold the shoe 15 against the run 3, and the link 11 will cause a tilting of the pawl 7, so that the end 8 of the pawl will bethrown out of engagement with'the ratchet wheel 9. Injury to the operator, due to backfiring, will thereby be avoided.

Having thus described the invention, what is claimed is 1. In a device of the class described, a shaft; an operating member fulcrumed upon the shaft; a ratchet wheel secured to the shaft; a pawl pivoted intermediate its ends upon the operating member, and adapted at one end to engage with. the ratchet wheel; a case; 'a shoe adapted to engage the case; a link connecting the shoe with the pawl to effect a tilting of the pawlout of engagement with the ratchet wheel, upon a reverse rotation of the shaft; a spring carried by the pawl and engaging the link to move the shoe circumferentially of the case; and means for causing the pawl to engage the ratchet and for holding the shoe engaged with the case.

2. In a device of the class described, a shaft; a lever fulcrumed upon the shaft; a pawl pivoted intermediate its ends upon the lever; a ratchet wheel upon the shaft, with which one end of the pawl is adapted to an gage; a link pivoted to the other end of the pawl; a shoe pivoted to the link; a case wit-h which the shoe is adapted to'engage; spring means for maintaining the shoe in engagement with the case; and spring means for moving the shoe circumferentially of the case, thereby to hold the pawl out of engagement with the ratchet wheel.

Copies of this patent may be obtained for 3. In a device of the class described, a shaft; a lever fulcrumed intermediate its ends upon the shaft; a ratchet wheel secured to the shaft; a pawl pivoted intermediate its ends upon the lever, and adapted at one end to engage with the ratchet; a case; a shoe adapted to engage with the case; means for pivotally connecting the shoe with the other end of the pawl; and a spring secured in its intermediate portion to the lever, upon the opposite side of the shaft from the pawl, the ends of the spring bearing against opposite edges of the pawl,upon opposite sides of the pivotal mounting of the pawl.

4:. In a device of the class described, a shaft; a lever fulcrumed adjacent the shaft;

a ratchet wheel secured to the shaft; a pawl pivoted intermediate its ends upon the lever, and adapted at one end to engage with the ratchet wheel; a case; a shoe adapted to bear against the case; a link pivotally connecting the shoe with the other end of the pawl; a spring secured to the pawl and bearing against the link, to move the shoe circumferentially of the case and to hold the pawl out of engagement with the ratchet, when the device is not in use; and spring means for maintaining the shoe in engagement with the case;

5. In a device of the class dscribed, a shaft; a lever fulcrumed intermediate its ends upon the shaft; a ratchet wheel secured to the shaft; apawl pivoted intermediate its ends upon the lever, and adapted at one I end to engage with the ratchet wheel; a case; a shoe adapted to bear against the case; a link connecting the shoe with the other end of the pawl; a spring engaged in its intermediate portion with thelever, upon the opposite side of the shaft from the pawl, the spring, at its ends, bearing against opposite edges of the pawl, upon opposite sides of the plvotal mounting of the pawl; and an auxiliary spring, secured at one end to the pawl and at its other end bearing against the link, to move the shoe circumferentially of the case. r 1

In testimony that I claim the foregoing as my own, I have hereto aiiixed my signature in the presence of two witnesses.

WILLIAM D. EVERLY. lVitnesses E. D. Yna'rrs, J. G. lVmei-rr.

five cents each, by addressing the Commissioner of latents. Washington, D. G.

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