US1620998A - Starting device for internal-combustion engines - Google Patents

Description

March 15, 1927. 1,620,998

v. R. CLARK STARTING DEVICE FOR INTERNAL COMBUSTION ENGINES Filed Ju ly 16, 1926 1 F 7 I 12 242F412? 7.

. maximum of efficiency, 1 r

Patented Mar. 15:, 1927.-

- V IT D STAT S vrner'nnl CLARK, or PHILADELBYHIA}PENNSYLVANIA,

STARTING nnvron non mrnn vancoivrnus'rron}nivenvns; 7

Application filed. Ju1y 16,

The object ofvlthe invention is tovprovide improvements in apparatus for imparting a rotary motion to shafts, and particularly in devices adapted for starting internal come bustionengines such as are used in marine launches, wherein there is generally no selfstarter, and the high compression. and inertia of movable parts *While stationary makes it very diflicultfto rotate the shaft manually, a I 1 J Another object is to provide a construction of a device of this character, which will not require an undue amount: of space, isrelatively simple and inexpensive to manufacture, and which will operate with a A further object isto pro 'de an: auxil-. iary shaft adapted to" be operatively: connected to and disconnected at Will from-the crank shaft ofan engine; to provide means to impart a rotary motion to this. auxiliary. shaft intermittently in one "direction; to

provide, means to restrain said sh'aft'against reverse motion as long as desired; to pro? vide resilient meansadapted to be, tensioned by said'first means; and; to provide meanssto release said sh'aft'so that said resilient means will rotate said shaft in the oppositedirec tion and thereby rotate, or turn over,the.

crank-shaft of such asian internal combustion fengine. I'

l/Vith these and other objects in mind, thepresent invention comprises still further novel details of construction and operation as arehereinafter fully brought out in the following description, NVhBIl read in conjunction with the accompanying drawings in which Fig. 1 is a side elevation of one embodiment of the invention partly in section; Fig. 2 is a fragmentary end elevatlon of asection of'the same, taken on the; line 2 -2 of Fig. 1; Fig. 3 is another sectlonal' I detail of the same, taken on the line 3-3:

of Fig. "1; and Fig. 4 is a detail section on the line of Fig. 1. I

Referring to 'theidravvings, only a 'frags mental-y portion 5 is shown of the crankshaft of an internal combustion engine, or "similar piece of mechanism, sa d shaft being provided with one or morepins 6,or other suitable means for engaging the same at will. The end portion of this shaft is adapted to be'surrounded by and received within a socket 7, provided witha curved bayonet slot or groove 8, into which the pin or pins 6 extend in order to couple said 192s.- Serial No.-122,885.

shaftrand said socket together-for the pur pose hereinafter' described.J v Y J The present starting device it is to :be understood is designed vto be positioned Within a ship, launch, or boat of anyrsort,

or for that matter to be operatively posiit Whether or not it is afloat-oronland. :H'Consequently, thestandards9. and lO'are to be tlOIlBdjWlth respect to a device havinganfi t element to be given a rotating impetusyw. 1

"considered as being fixed to and (supported:

by anysuitable base 11,- from Whiohtheyrise in spaced parallel relation. Thru these, standardsare journaled independent, aligned,

relatively, movable shafts 12 and'12 to one 'end of thelatter-of-Which is secured inlongitudinally slidable, but rotatably fixed, relation a head 13, Which in turn is an integral part or extension of the socket 7. The said head may be attached, to, said shaft 12 in: 1

any suitable manner, but foripurposes ofillustration this. connection is shown "as comprising a longitudinal; slot 14in which I a'pin 15 is longitudinally fislidable, While if desired an expansion spring (not shown) may be positioned Within the head 13 in engaged relation ith respect to the shaftb.

so] i Surrounding the shaft 12 is a coil, or I similar, spring 16, onefend of which is secured to a ratchet. 17 keyedto the said last-n a med shaft and engaged by; a spring-l pressed pavvl-18, mounted upon the inner rupright surface of the-standard 9, touper-r mit rotation in one direction, but to prevent its unintentional rotation in the opposite dishoulder or the like uponlthe supportingv shaft, while'the teeth of saidpinion mesh l with the teeth of a rack-'21, secured'to a manually actuatable lever 22,- oscillatably supportedby meansfof a pivot 23, carried by the lower portion of the standard 9.

NVhile the shafts 12 and 12 may be roifoii tatably associated'in any suitable mannenthe i present embodiment of the invention shows the shaft 12*" as receiving the adjacent endof the shaft 12, hile'the surrounding por-;-

tion of the former is enlarged and provided with teeth to comprise a ratchet "24, nor- 3 mally engagedlby a spring-pressed pawl 25,

mounted upon the inner upright surface of the standard 10. Said last-named standard indirect is also provided with a lug or shoulder 26, to which pivo'tally secured a bell-crank lever 27, one end of said lever being connected to said pawl by means of a link 28, and the opposite end ofsaid' lever'being connected by means of a link 29 toa pedal, or manually actuatable lever 30, pivotally supported by and in any suitable means 31 and provided with a strap or the like 32, which surrounds-and engages teeth: 33 carried: by. a standard 34, Which. is'fixedly' mounted in any suitable manner with: respect to the shaft 3 standard 9", hereinbefore described. It will also be: noticect that the lever 30' and; its: supr port31g; While pivotally connected to afford relative oscillation, are so connected as ,to. provide: for a slight longitudinal movement of the; former With\ respect to the latter, in order to: permit the: strap 32 toengage the teeth: 33: of'the standard by reason of the in fluence of: its connection with the springpressect paivl25, and yet to permit saida strap to be instantly released from engagement Witll said teeth as this becomes necessary.

In the operation ofthe device, the head? is madeito engage the pin 6 of the shaft 5, and the: lever 22 is manually oscillated:- to andl fro, thus oscillating; the pinion. 1 9, With the result that during eaclr forward movement of saith lever the spring: 16 is wound tighter and: tighter upon the shaft 12', by the cooperation of the respective ratchet and pawlsi 1v71'8: and 2%25. Fi-

nally, after thespring; 16' has become suet ciently 't'ensioned ,the pedal 30 is actuated. either by ones. foot or hand so as to disengage the rack, 33-, and; upon being. pulled forward; effects a disengagement of thepawl: 25 from the ratchet Wheel 24, thus releasing the shaft 1'2 adijacent to the standard 10 and-i permitting. the spring; to; indirectly rotate the head 7. and shaft 5. In; the case of starting an. integral combustion engine,

before the. ratchet 2r. is released, the throttle and ignition spark are, of course, set, so that'merely' releasing the stored energy of the spring. 16'v operatesto completely start the normal operation and running of the engine: In, any case, upon resetting the lever 30 5011111313 the: paevl 25; engages the ratchet 24, the starting; device: asa. unit is adapted to be again operated as abovev described, Whem and; as soon as it becomes necessary to restartthe engine; or other mechanism.

Havingthus described my invention, What I claim and desire to protect by LettersPatentof the United: States, is

1. lhe combination of a rotatable shaft, a head rotatably attached by a journalled connection to said shaft and: adapted to engage the shaf-t of an internal combustion.

engine,- a ratchet and pawlconnected to said to rotate said shaft and tension said spring while the: pawls: engagethe respective ratchets. s

2. The combination of, a rotatable shaft, 9.; headrotatably attached by ajournalled con nection to said shaft and adapted to'engage the shaft of an internal combustion engine,

a ratchet andtpa-Wl' connected to said head-,, a ratchet and pawl connected to said: Shaft,

a coil spring extending; between and. connected to said shaft and said head, a pinion also carried by said shaft, a. pawl connected; to prevent relative rotation between said; pinion and. said: shaft in:. one direction and? an oscillatable, rack pivotally supported; and; co-operating with said pinion torotate said; shaft and tension said, spring While the paWls engage the. respective ratchets, means to releasezsaid firstv pawvL from its co-oper ating; ratchet, to permitthe spring, to rotatesha-ft 'disengageably con-- said head and a nected thereto.- v o 3.-The:. combination of a shaft, a; coil spring surroundingsaid shaft, andadapted to be. tensioned, a member rotatably associated Withsaid shaft, aratchet carried by said member, a, spring-pressed: pawl 1f10rmally cor-operating Withsaidratchet, a; fireedly posltionedi rack',: and means: ei'igagmgl said: rack and connected to: said pawhwvhere:

by actuation of said; means releases said pawl and permits said spring when ten: sioned. to rotate said-member with respect to said. shaft. g

4. The combination: of a shaft, a coil spring. surrounding said shaft and adapted.

to be tensioned; a head rotatably, associated- With said: shaft,fa ratchet carried by said head, a pawl operativeto normally prevent rotation of said ratchet in one direction, a bell crank lever oscillatably mounted upon a pivot, a: manually actuated'lever, means connecting said first; lever bot-h to saidlp'awl and to said last-named lever, and, a relae tivelyfixed: rack: engageable by, and operative to temporarily position. said, lastnamed: lever so as to WltllllOlCl saidpawl from; engagement with said ratchet, to permit said; spring: when under tension to rotatesaidihead.-

In testimony whereof I hereby a-fliX-I my signature;

VJIRG-IL. n. omen.

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