US995925A - Starting device for explosion-engines. - Google Patents

Description

H. B. STRUNK. STARTING DEVICE FOR EXPLOSION ENGINES.

APPLICATION FILED AUG.1. 1910.

1 Patented JUIIBIZO, 1911.

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APPLICATION FILED AUG.1,19101 1 Patented June20, 191-1.

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HERSGHEL B. STRUNK, 013 DETROIT, MICHIGAN, ASSIGNOR OF ONE-THIRD T EDWARD .P. LANG, OF CHICAGO, ILLINOIS;

. STARTING DEVICE FOR EXPLOSION-ENGINES.

Application filed August 1, 1910. Serial No. 574,974.

To all whom it may concern: I

Be it kno'wn that I, HERsoHEL B. STRUNK, a citizen of the United States, residing at Detroit, county of Wayne, and State of.

Michigan, have invented certain new and v useful Improvements in Starting Devices for Explosion-Engines, of which the following is a specification;

Myinvention relates to certain new and useful improvements in starting devices for explosion engines in self-propelled vehicles. The object of my invention is the means of a starting device of the character men-v consists in a starting device characterized as.

above mentioned and in certain details of construction and arrangement of parts all as Wlll be hereinafter fully described and more particularly pointed out in the appended claims.

j My invention will be more readily understood by reference to the accompanying drawlngs forming a part of this specification, and in which,

Figure 1 is a side elevation of a starting device embodying the preferred form of my invention, Fig. 2 is a rear elevation thereof, Fig. 3 is a transverse section taken through the spring drum of the device, Fig. 4 is a fragmentary rear elevation, portions being broken away in order to expose underlying parts, and Fig. 5 is a fragmentary front elevation.

Referring now to the drawings 1 indicates the longitudinal bars of the chassis of the vehicle in conjunction with which the device is employed, 2 indicating the floor or bottom of the vehicle body, and 3 the main shaft of the propelling engine, the latter not being shown;

fixed to the shaft 3 is a sleeve 4. Loosely f Keyed or otherwise rigidly mounted upon the sleeve 4 is a second sleeve 5, ball bearings 6 being preferably interposed between the adjacent surfaces of said' sleeves to alleviatefriction. Formed at one extremity of the sleeve 44s a ratchet 7, spring pressed pawls 7v pivotally secured to the adjacent extremity of the sleeve 5 being adapted to coact with said ratchet to serve to normally establish an operative COIIDGC: tion between said sleeves and hence between the sleeve 5 and the shaft 3; said pawls being so arranged asto be adapted, upon rotation of the sleeve 6, to drlve said shaft only in a positive direction or in a direction to start the engine. Loosely mounted upon the sleeve 5 is a circular spring drum 8, the latter being held against longitudinal movement upon said sleeve by means of a ring 9 secured to one extremity of said sleeve and between which and a circumferentialshoulder 10 formed upon the latter, the stationary head 8 of said drum is held. The head 8 of said drum which is removable is secured in position by screw bolts 11. Arranged within the drum 6 is a spiral spring 12, the respective extremities of which are secured to the peripheral wall of said drum and to the periphery of the sleeve ,5, as clearly shown in Fig. 4; said drum being so arranged that, in wound condition and with the drum 6 held stationary, the same will be adapted, when released, to efiect the positive rotation of the shaft 3.

Formed upon the outer surface of the head 8 at the periphery thereof is an annular ratchet 13, the teeth of the latter beingv radially disposed. Having their outer extremities secured-to the base bars 1 are inwardly projecting spring pawls let, said,

pawls being so arranged-as to normally coact with the ratchet 13 to prevent retrograde rotation of the spring drum or rotation in.

a direction opposite to that of the shaft 3 when in operation.

Formed upon one extremity of the sleeve 5 is an annular ratchet 15. Pivotally secured as at 16 atits outer extremity to one of the base bars 1 is an inwardly project, ing arm 17 carrying pawls at its bifurcated inner extremity adapted to coact with the ratchet 15 to prevent positive rotation of the sleeve 5 or rotation in a direction the same as that of the shaft?) when in operation. A leaf spring 18 having its. free end engaging said arm is adapted to normally hold the latter in engagement with the 25 ---'to' engage against the outersurface of the head 8.to establish an operative connection "between the shaft 3 and said drum. Pivotally'secured at its outer end to one of the the bottom '2 of the vehicle body is a bracket 19in .which is 'pivotally mounted a bellcrank 20.- To the vertically-extending arm offsaid bell-crank isconnected a link-'21- which extends to and is connected with. the

zontally extendingarm of said bell-crank is connected the lower extremity of a presser rod 22, the latter bottom 2 for engagement bythe foot of the vehicle driver. as will be observed that rocking of-the arm-.-

' l7 to effect disengagement thereof from the projecting up through the The arrangement is suchratchet 15- may be effected by simply depressing the rod 22, the latter being so 10-.-

" .cated that such depression thereof maybe effected by the vehicle driver without necessitating his leaving his I position in the drivers seat inthe" vehicle.

- Splined to the shaft 3Vadjacent the'head 8 of the drum 6 is a disk 23, the peripheral portion of the inner side thereof being provided with a coating of frictional material adapted, when said disk is properly mo'ved,

base bars 1 a switching fork 2-1, the bifurcated inner end '25 thereof engaging a circumferential groove 26 in .the reduced outer end portion of the disk '23,'establish- 1ng an operative connection between said form and disk. Secured to and depending is alever 28. Y The lower-extremity of: said 40.

lever is connected by means of a link 29-with= the free end of the switch fork 24 so that oscillation of the-latter to effect the forcing of the friction ,disk into engagement with the spring barrel may be efiected byoperating the-upper extremity of the lever 28.-

Said lever 1s so positioned that the upper end thereof is located in operative proximity with the drivers seat and so that operation thereo'fby the vehicle driver maybe effected fwithout necessitatingihis leaving his positionin' the vehicle.

' The operation of the device is as followsz Assuming the'springlQ to be in wound condition and the'' vehicle engine to be 'inert,

now,.in order to start the engine from a position within thevehicle, it is only re-' quired todepress the rod 22.- Upon such depression of the latter, pawl arm 17. will' be rocked to disengage the'sleeve- 5. Said sleeve being disengaged, the same will, by

reason of its connection with the inner end ofthe spring 12, be immediately positively rotated, the outer end of said springbein held 'by the spring drum which is hel against rotation by the. pawls l4. Said 'ceptible toreadily becomin sleeve 4, the latter being" fiizedt'o the shaft 3, effects the positive rotation of said shaft, thus the engine-maybe, started; The sleeve 5 Will be rotated only so long as the-spring C12 is 'exertingits force thereon. lYhen'said arm, 17, To the outer extremity of the horispring is' run .down said sleeve will ceaseto rotate.";.The enginebeing in operation, inorder, to efiect the. winding of the spring again for a .subsequentstarting of the engine, it is only required to'operate the lever 28"toforce the friction 'disk 23 int0 engage- .ment with the spring drum, as before described, since'by so doing said drum will be rotated in, a directionsuch as to cause: the

winding of the spring. The connection of the friction disk with the drum is such that I when the spring is fully wound the resist-' ance offered thereto to' further the rotation of the drulnwill cause'the slipping, of said drum upon said disk, this slippingalso serving to. notify the operator ofthe complete winding of the spring. a

The device set forth is durable, the same is .of simple construction, hence may -be\ manufactured at a low cost and, further, be-

cause-of its simplicity, the Same-isn t sus- 'IIIOPBIZltlVG, and the device is of greate clency 1n operation.

.VVhile I have shown what I deem to. be the preferable form of my device, I'do not wish to be limited-theretoflasthere might be various changes made in the details of construction and arrangement of parts described without departlng from the spirit of the jinvention comprehended within the sco e'of the appended claims.

aving described. my invention what I claim asjnew and: desire to secure bv'Letters Patent is: i d

' '1. The combination.- with a drive shaft having "an internal combustion engineconnected thereto, of a spring drum loosely j mounted upon said shaft ;.anan1 1ular ratchetsecured to a face of said drum; spring pawls engaging said ratchet for preventing rotationof the latter in one direction; a spiral spring 'within said drum and having its outer end connected therewith; a sleeve .loosely'mounted upon said shaft and con nected with the inner end of said spring; ratchet teeth upon the end of said sleeve;

pawls cooperating with the ratchet--upon said sleeve for. normally preventing 'rotation of said sleeve in one direction; nianually operable means for releasing saidlast mentioned pawls; a, pawl and ratchet conwinding of said spring when said shaft is nectionbetwe'en saidsleeve and said shaft -in operation; and means for manually op secured to a face of said drum; spring pawls engaging said ratchet for preventing ,ro-' tation of the latter inone direction; a spiral spring within said .drum and having its outer end connectedv therewith; 'a sleeve loosely mounted upon said 'shaftandcon- 'nected with the inner end of said spring;

ratchet teeth upon the end of said sleeve; pawls cooperating with the ratchet upon said sleeve for normally preventing rotation of the sleeve in one direction; a foot I lever arranged for releasing said last men tioned 'pawls;"a pawl and ratchet connec- 'tion between said sleeve and said shaft wherehy -upon release of said spring when in wound .tostart the engine; a friction disk splined tosaid shaft and adapted to engage a side of said drum, to effect the winding of said spring when 'said shaft is in operation; and a hand lever for operating said friction disk, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses. a

- HERSCHEL'B. STRUNIL.

Witnesses:

PAUL B. STRUNK,

SUSAN M. ,BUTTERFIELD;

copies of this patent may be obtained for five cents each, by addressing the figmniissioner of 1 at ent s,

Washington, D. 0.

condition, said shaft will 'be rotated

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