US1253150A - Engine-starter. - Google Patents

Description

@EST AWC-MELE CGP" T. C. CIIIIISIIE 6L- E. A. EDIVION.

ENGINE STARTER.

/IPPLIc/ITIQN FILED om. 23.. m15.

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APEUCATIQN FILED 00h23. i915. lsS-y l5@ l zmmed Jan. 8y 1918.

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ENGINE-STARTER.

Specicaton of Letters Patent.

Patented Jani. 8,1918.

Application filed October 23, 1915. Serial No. 57,690.

To all whom z't may concern: y p

Be it known that we, TnonAs C. CHRIS- TIE and ELMni-i A. EDMON.- citizens of the United States, residing at Lebanon. in the county of Warren and State of Ohio. haye invented new and useful Improvements in Engine-Starters, of which the 'following is a specification.v p

This invention relates to engine starters of the mechanical type thel object in view being to provide a' starter applicable to the engines of automobiles and similar \fehicles, the starting mechanism being controlled by the driver' of the machinel while in his seat and being; of such a nature that it is impossible for the operator to be injured by the starter in the 'event lof the engine back firing or starting to turn in the wrong direction.

A further object of the'invention is to provide novelmeans `whe-'eby the starting arm which turns the engine` shaft is automatically tripped atboth'liinits of its move-.j

ment so as to disenga ge the nisin from the engine shaft.

One ofthe principal features of this invention resides in the particular eonstrnostarting mecha- 'tion of the starting arm whereby increased throw and leverage is obtained for etlecting a correspondingly increased throw or turning movement of the engine shaft. I

With-the above and other objects in view, the invention consists in the novel construction, combination and arrangement of parts, as herein described, illustrated. and claimed. In the accompanying drawings Figure l is a front elevation partly in section showing the starterof this invei'tion applied to the engine of anantoniobiie.

Fig. 2 is a plan View thereofpartly in sec tion also shown applied. v

Fig. 3 is ,a vertical longitudinal. section showing the operating` means. l

Fig. 4 is an enlarged front elevation showing the operating arm and its extension in'V their initial positions.

Fig. 5 is a similar view showing the final lposition of sadparts.

Fig. 6 is a fragmentary yrear elevation of a` portion of the main starting arm, the dog and spring. A. l

Fig. 7 is a detail perspective viewv of the pirated arm extension.

. Fig. S is a fragmentary section similar to' Fig. Ll but looking toward the opposite side of the main starting arm.

Referring tos the drawings, 1 designates a ratchet wheel which when invitsl workingA position has a fixed relation to the Ycrank shaft 'of the engine designated generally at A. ln the preferred embodiment of this invention the ratchet wheel l is carried by or foi-ined integrally with a belt pulley7 2 which is substitutei'l for the belt pulley now usually fastened on 'the crank shaft of the engine and around which the belt passes for driv` ing the fan used in maintaining the engine in a cool condition, said fan being arranged betweeirthe front end of the engine and the radiator.- Extending forwardly from the ratchet wheel l isa stub shaft 3 on'which is fastened the clutch member 4 which is adapleil to be engaged by a coperating clutch ineinberon the inner end of the shaft p of the crank by means of which the engine is ordinarily started.

5 designatesl a collar which loosely encirclesthe clutchmeinber 4 and is provided with an outwardly extending ina-in starting arm ti having pivotally connected to theeX- ti'eniity thereof at 7 an extension arm 8 preferably composed of two Side members which straddle the extremity of the main arm 6 and which have journaled between the outer extremities thereof a cha-in pulley 9 the purpose of which' will presently appear. A stop in the form of a pin 8 onv the extension arm .8 contacts with the main arm 6 and serves to limit the pivotal movement of said extension arni lin an inward direction so that an leveragev or pull on the arm f3 is insured.

' A. dog-10 is piif'otally mounted at 11 on the main arm 6 and is' provided with asprojecting tooth l2 to cooperate' with the teeth of the ratchet wheel l for the purpose lof turning said ratchet wheel in a direction `whiel`i will turn the crank shaft of the eny gine to start the latter. The dog 10 rovided with two tripping` faces 13cm 14 which entend or roiect beyond the opposite sides or edges of in Contact with fixed stop-surfaces 15 which are shown as formed by the side portions of the pan 16 which extends under the engine. ln the Working stroke of Ltliegirm 6, the tripvthe arm 6 so as to comer when the arm Avait/@Le COF4 i the dog is forced into engagement with the its working stroke. i

The tripping faces of the dog are disposed ratchet wheel as soon as the arm 6 starts on at such angles that the dog is released by substantially vertical pressure against the fixed stop surfaces at both ends of the throw of the main starting arm, the dog being 13 in one of its tripping faces to receive one of said stopping surfaces and prevent further pivotal movement of the dog when the main arm has reached the full limit of its working stroke, the dog serving to limit said working stroke of the main starting arm.

, being fastened to Fall `The mechanism hereinabove described is manually operatief1 means of a handle 18 arranged in rear `the dash 19, said handle the rear extremity of a pull rod Q0 the latter passing through the dash board and being normally held in its initiai position by means of a cushioning spring 21 `which is interposed between a plate 22 on the dash and a shoulder 23 on the pull rod. Connected to an eye 24 at the forward end of the push rod .2O isfa chain 25 which passes around a guide pulley 26- joninaied 1n a bracket 27 fastened to the frame of an automobile at one side of the engine asslioivn. The chain 25 then passes .errand the pulley 9 of the extension-arm,

than tack to the bracketf27 tojwhich', it iaetezied at 28. 1n arder to provide for the quickreturn movement of the starting arm 6, I employ a caiicd contractile spring 29 one endof which is secured at 30 to the frame. To theother extremity of said spring is fastened Ornefe'iid, of a short chain 31, the opposite end. of'k said chain being fastened to a grooved pulley face 32 on the collar' abovedescribed. l' n1 operation, the driver grasps the handle 153 and pulls the'same rearwardlycausing the chain to swing the main arm 6 and the extension arm 8 infha direction which will canse the dog 10 to engage the ratchet` wheel l and impart a. partial turning movement in the proper direction to the crank shaft of thelenginc. diffused, the spring is soon as the handle 18 is re- 29 restores the 'starting to' its initial position. Tbisfoperation ha repeated as frequently las necessary to start the engine. At bothlimits is "tripped ont of engagement with the'- ratchet wheel 1 thus preventing injury to the hand' and arm of the operator as well as Equipping an automobile engine with thel starting mechanism hereinabove described willnot interfere with the freeV use of the ordinary hand starting crank, so that both means of starting the engine may be employed'as may be found necessary or advisable under existing conditions.

Having'thus described our invention, we claim z- 4 1. The combination with the crank shaft of an engine, of a ratchet vwheel having a fixed relation to said shaft, anormally loose collar on said shaft at one side of the ratchet wheel, a main starting arm extending from said collar and having a fixedy relation thereto, a dog having a pivotalmounting on and carried by said arm and having two tripping faces projecting ,laterally on opposite sides of said arm, means for causing said dog to engage the ratchet wheel as soon as the arm is moved from its y.initial position, fixed stop surfacesv with which said tripping faces contact at the limits of `movement of said arm, an extension arm pivotally attached to the main starting arm and having a pulley at its free end, means for retractin thestarting arm, a manually operable p 4 chain' controlled from the drivers seat and passing freely around said pulley and having vene 'extremity thereof attached to 'a on said extension `fixedlvrelation to said shaft, a collar havmg' a normally loose relation to said shaft and ratchet wheel, a main starting arm extending fromy said collar and fixed in relation tothe latter, a dog having a pivotal mounting onand' carried by said arm and having frontend rear tripping faces projecting beyond opposite faces of said arm, means for causing said dog to engage the ratchet wheel as soon as the arm is moved from its initial position, xed stop surfaces with which said tripping faces contact at the limits of movement cf the dog, an extension arm pivotally attached to the main startmg arm,-`a manually operable pull chain controlled from the drivers seat for impartring a working stroke to said starting arm, and means for retracting said starting arm, said tripping :yfaces of the dog being disposed at such angles that the dog is released ing stroke, the dog serving to limit said lby substantially vertical, pressure against working stroke of the main starting arm. the fixed stop surfaces at both ends of the In testimony whereof We aiX our signathrow of the main starting `2li-In, the dog tures in presence of two Witnesses.

being formed with a locking notch 13 in THOMAS C. CHRISTIE. one ot' its tripping faces to receive` one of ELMER A.. EDMON. said stop surfaces and prevent further W itnesses:-

pivotal movement of the dog when the main i GEO. L. SCHENCK,

erm has reached the fulllimit of its w'ork- M. E. GUSTIN.

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