US979530A - Starting mechanism for explosive-engines. - Google Patents

Description

-R. MOKBB- I STARTINQ-MECHA'NISM FOB EXPLOSIVE ENGINES.

APPLICATION FILED JULY 6, 1909.

. Patented Dec. 27, 1910.

2' sums-sum 1.

,i llllm lllllllllllllllllll i ||||llll lllllllll R. Mc'KEE.

STARTING MECHANISM FOR BXPLOSIVE ENGINES.

APPLICATION FILED JULYG, 1909 Patented Dec. 27, 1910.

WITRESSES a W r mm Maxine, on rHInADELrHL i,.rnNnsYLvAnrn. I

' To all whom it may concerns i I .Be' it known that 1, ROBERT a citizen of the United States, and a resident of the city and county of Philadelphia and State of Pennsylvania, have invented an Improvement in Starting-Mechanism for Explosive-Engines, of which the following is a'specificationgj e v My invention has reference to starting mechanism for/explosive engines and consists of certain improvements which are which-form a part thereof.

and without the necessity ofmaking special ment of intermediate mechanism. between.

fully set out in the following specification and shown in the accompanying drawings The object of my invention isto .provide a ;c ons tru"ction of starting mechanism which may be applied to explosive'engines employed 'on automobiles and for other purposes wherebya premature explosion and backwardstarting of the engine crank shaft cannotinjure the operator .When starting the engine. 1 p

Myobject is also tojprovid-e a construction of starting mechanism which maybe applied to automobiles now-in existence construction in the engine.

\My invention comprehends the emplo'y the crank handle, or lever of the starting mechanism and the engine shaft which,

while adapted. torotate the engine shaft and "overcome the compression within the cylinder of the engine, -'will yield under certain strains such a premature explosion and quick reversal of the engine shaft, said intermediate means embodying a yielding friction device and a non-yielding connecting clutch mechanism between the friction 7 mechanism in explosive engines embodying my improvements; Fig. 2 is a sectional elevation thereofg. Fig. 3 is a front elevation of the same with the upper part of the hand crank or lever broken away; and Figs.

4: and 5 are elevations showing a modifica t-i onef my inve ntion.

Specification of Letters Patent. i Application filed July 6, 1909.

s'renrme mncnanisiviron nxrnosrvn-nnremns.

Patented cc, as, rare. Serial'No. 506,015.

2 is.a main bearing which is adapted to be bolted to a cross bar connecting the chassis or main frame of the automobile. TlllS hearing may be shaped to suit any automobile structure to which my invention 'is to be'applied; 3 is an engine crank shaft and'is provided on the end with the usual ratchet clutch 4; and 5 is a starting shaft journaled in the bearing with provisions for rotary motion and'longitudinal adjustment and the end of this shaft is provided with a. ratchet clutch part 6, which is the counter part of the clutch part 4 of the engine shaft and with which it'engages in starting the rotation of the engine.

" The shaft 5 has, formed upon it, a collar 7 and is extended beyond the collar a con-v siderable distance, the end terminating in a screw-threaded part 12 provided with a nut 13 and a lock nut 14. Sleeved upon the shaft 5 between the collar and the lock nut,

are the following parts, namely; a friction 'washer- 8 preferably formed in vulcanized fiber resting against the collar 7 a friction .di'sk -9 resting against the friction washer and having upon its periphery ratchet teeth 10 and upon its forward face an annular row of ratchet teeth '11, a second friction clamping sleeve 16 having a flange 17 pressing against the last. mentioned friction washer 15, and alarge washer 18 pressing upon the endof the sleeve 16 and adapted to receive thepressure of the nut 9. By

tightening the nuts '13 and 14 the sleeve 16 and its flange 17 may be forced with more ,or' less pressure upon Y the remaining parts sleeved upo'nth'e. shaft 5 so" as to clamp the friction disk 9' with greatenor lesspressure to create the necessary amount of gripping action between the ratchet disk and the shaft and its connections. To prevent the sleeve from rotating upon the shaft 5, a key or feather 20 is secured'tothe inner part of the'sleeve and works in a slot 21 on the shaft 5 so that the sleeve and its flange,

as well as the collar 7, are required to rotate as a unit. This manner of rotation of the friction disk 9 will cause the shaft. 5 to be rotated with a proper amount of-power of transmission. I

Journaled upon the sleeve 16 is the hub 22 of a hand crank 23.1 This hub has freedomof rotation and of longitudinal reciprowasher. 15 also preferably of vulcanized fiber. "and resting against the friction disk, a

cation upon the sleeve; further has upon oneface ratchet teeth 2'4 which engage'the fratchet teeth 11 of the-friction disk 9 .so

as to rotate the said disk to the right when the crank is rotated to the right and when standing in front of the nut; end of the shaft 5; and the OPPOSltB': faceof -thehub is provided with an outwardly extending tubu-lar flange 19'which looselyfits over the Washer 18 so as to form an annular chamber in which is located a coil spring 26-one end of which presses against the washer and the otherend against the hub of the'hand crank or lever so as to normally keep the ratchet teeth. thereof in engagement with the ratchet teeth 11 of the friction disk, while permitting the saidhand crank to.be adjusted to any position desired with re- .s ect to the circumferenceof the said fric- :tlOIl disk to enable the operator to' get a. i. proper purchase in starting the rotation of the engine.

27 is a pawl pivoted themain bearing 2 and is spring pressed into, engagement with the teeth'lO of the friction disk 9 -by afspring 28 so as to prevent the friction ratchet teeth 10 of the friction disk pass.

disk from turning backward, or to the left. It will now be understood that, if the hand crank or lever is rotated to the right, it. will revolve the friction disk 9 with it, by means of thefriction devices, the shaft 5 and there-' by, through the clutches 4L and 6, rotate the 1 engine shaft 3-. -During this action, the

freely, under the spring actuated pawl.

Should the enginestart up properly the shaft 5 and the friction disk travel freely und'ei'. the pawl and with respect to the hand crank -or lever. "If the 'engine has premature explosion and kicks backward, the pawl 27 vwill hold the friction disk 9 from rotating-backward Whereas the shaft- 5 will re-, volve by overcoming the friction between the friction disk 9 and the collar 7 and thev flangel? together with the washers 8 and 15,- By the friction disk being 'held against backwardrnotion it'is evident that no strainwill'come upon the hand crank or lever due 'to'gthe backward rotation or kick of the engine.

, The shaft5 is provided-within theibean, ing 2 with two annular grooves29 and 30,

and the bearing 2 is provided with a cup 31 which acts as a guide fora detent plug 32 Y and a spring 33 which forces the detent plug into engagement with the grooves 29 and 30.

A's shown in Fig; 2 the detent'is in engage ment with the grdove'29 andnormally holds the clutches 4 and .5 in contact during the starting of-the engine. When the engine r0;

tate's under its own explosion the cam surfaces-of the'parts 4 and '6 force the shaft 5 Itingitudinally so that the annular groove 29 is, forced out of engagement with the Spring flgfi'fled deter 1t lugsa and the annular V groove 30 is brought into alin ement so as to be engaged by, the said detent plug and thereby insure the clutch part 6 being held out of engagement with the clutch part t during he normal running of ,the engine. When thi action takes place, the entire shaft 5 and all ofthe mechanism carried with it are partly shiftedwithrespect to thebearing 2 and the pawl '27. 'After stopping the en gine, should it be desired to again start the but this would not give provisions for locking the crank in'the'best possible position for starting the engine, and hence I prefen to make it independent. of the said friction disk and provide connecting means in the form of the ratchet: teeth or' some other equivalent device. As another mode of making thisconnection, 1' have shown in- Figs. 4 and 5 a modification in which the ratchet teeth .10 of the friction'disk 9' are made wider :and in which the crank lever 23 is provided with a spring pawl'g i which I engages the said ratchet teeth on the friction disk. Iiip'refer however, the form of con;

struction as shown in Figs. 1, 2 and 3.

The friction disk 9 is preferably formed with a recess'on one face so that the pe-' ripheral flange thereof will extend over the. a

washer 8 and the collar 7 and shield them in turning; and the lock caused by forming the teeth 11 of the friction disk and the teeth I 24: of the crank lever hub to engage all the.

way around, an annular chamber will be' provided which shields the friction Washer "-15- and the flange 17 of the'sleeve '16. All

' of the parts are constructed so as .to be coma pact, well protected and easily repaired.-

-By-sin 1ply removing the two nuts 13 and 14: the entire 0 erative parts may be stripped from the sha t for poses.

While I have'shown' my invention in the cleaning .or other purform which I-have employed it for actual use and which preferred construction ,embodies my invention a satisfactory manner, I do not restrigt myself to the de( tails shown as these may-be modified in various ways without departing from -the '1'2o Having nowdescribedjmy invention what desire "to secure byLetspirit of the invention.

1' claimas new, and

'ters Patent is}:

' 1, Inira; starting ldevice for explosive engines, the combination of a rotatable shaft, 'a frlotion disk 'sleeved'upon-the shaft and having annular-friction surfaces, friction devices in annular-form for clamping the I opposite-annular surfaces'of thefriction disk and fr1ctionally holdinfg it-to 'the shaft tate freely in the other direction, and hand operated means independent of'the frictiondisk for rotating it in one direction but free.

to rotate relatively to the disk in the other direction at all times.

2. In a-jstarting device for explosive engines, the combination of a rotatable shaft having an annular flange, an annular .friction disk loosely sleeved upon the. shaft and coacting with the annular flange; thereof, friction devices in .the form of an annular disk adjustable lengthwise upon the shaft and adjusting means therefor for clamping thefriction disk to the annular flange sf the shaft whereby, they may be rotated together, means to prevent the friction ,disk rotating in one direction while permitting it to rotate freely in the other direction, and hand operated means for rotating the friction disk consisting of a lever and mechanical devices between the said lever andfriction disk for rotating the friction disk in one .direction while permitting it to rotate freely in the other direction without rotating the lever. I

'3. In astartin'g-device for explosive engines, the combination ofja rotatable shaft, a friction disk sleeved upon the shaft, friction devices for clamping the friction disk to the shaft whereby they may be rotated together, means to prevent the, friction disk rotating in one direction While permitting it to rotate freely. inthe other direction, and

leverand a spring device for maintaining said pa-vvl and ratchet devicesin normal engagement.

jfn a starting device for explosive en'- gmes, thGpOInblIlittlOIl of a rotatable shaft,

a friction disk sleeved upon. the shaft and providing an annular surface transversely to the shaft, friction devicesrotating with the, shaft and having annular surfaces for clamping the friction d sk to the shaft where by they may be rotated together, means to prevent the friction disk rotating in one direction While permitting it to rotatefreely in the other direction consisting of ratchet teeth on the friction disk, a pawl device for preventing the ratchet teeth. and friction disk from rotating in one direction only, and hand operated means for rotating the friction disk.

5. In a starting device for explosive engines, the combination of a rotatable shaft, a friction disk sleeved upon the shaft, fric1 tion devices for clamping the friction disk to the shaft whereby they may be rotated together, means to prevent the frictiondisk rotating in one direction While permitting it to rotate freely in the other direction, hand. operated means for rotating the friction disk, a bearing for the shaft in which it may rotate and reciprocate longitudinally, the .detent mechanism for holding the said shaft in either of two longitudinal adjust ments while permitting free rotation, Whereby the clutch on the shaft n1ay engage the engine shaft or be held out of engagement therewith.

gines, the combination of a rotatable shaft having a clutch for engaging the engine shaft having two parallel annular grooves about its circumference, a friction disk sleeved 'upon the shaft, friction devices for clamping the friction disk to the shaft mitting free rotation, whereby the clutch on the shaft may engage the engine shaft or be held outofengagement therewith. 7.. In a starting mechanism forexplosive engines, the combination of a starting shaft having an annular collar, with a flanged sleeve carried bytheshaft, a friction disk sleeved upon the shaft intermediate of the collar and-the sleeve and having its .periphery formed with ratchet teeth, adjusting means on the shaft for creatinga friction upon the frlctiondisk to normally prevent rotation thereof relatively to the shaft, a pawl'engagingthe ratchet teeth of the fric- "tion disk to prevent rotation of. the disk in one direction and a hand operated .lever having a mechanical connection with the friction disk to, rotate it. v v

8. In a starting mechanism'for explosive engines, the combinationof a starting shaft having an annular collar, with -a flanged 1 sleeve carried-be thesh'aft, a fr ction disk sleeved upon the she ftinterm'ediate of the collar and the sleeve and having its periphery formed with ratchet teeth, adjusting means on the shaft fer creating a friction upon thefriction diskto normally prevent rotation thereof relatively to the shaft, a pawl engagingthe ratchet teeth of the friction disk to, prevent rotation of the disk in one directiona hand operated lever provided with ratchet teeth engaging the fric- "tion disk to rotate it,and spring devices for pressing the hand operated, lever into engagem'ent with the friction disk. I 9. In astarting mechanism for explosive. engines, the eombination of a starting shaft 75 6. In a starting device for explos ve en-c having an annular collar, with a flanged sleeve'carried by the shaft, a friction disk sleeved upon the shaft intermediate of the collar and the sleeve and having its periphery formed with ratchet teeth, friction wash-.

ers' between the collar and the friction disk and between the fianged'sleeve and friction disk, adjusting means on the shaftffor creating a friction upon the friction disk to normally prevent rotation thereof relatively to thershaft, a pawl engaging the t ratchet teeth of the friction disk toprevent rotation of the disk in one direction, and-a the flange sleeve and having a tubular hand operated lever having a mechanical connection with the friction disk to rotate it. 10. In a starting mechanism for explo-.

' sive engines, the combination ofv a starting shaft j having an annular collar, f with a flanged sleeve carried by the shaft, a friction disk sleeved upon the shaft intermediate of the collar'and the sleeve and having ,its periphery formed with ratchet teeth, ad

justing means on the shaft for creating a friction upon the friction disk to normally prevent rotation thereof relatively to the shaft, a pawl engaging the ratchet. teeth of the-friction disk to prevent rotation of the disk in one direction, a hand operated lever having a mechanical connection with the friction disk to rotate-it journaled'upon flange, awasher clamped in. position betate,whereby the shaft may .be held in or tween th'e'end of'the sleeve and the adjusting means, and a'coil spring within the tn bular flange and pressing at one end upon' the hand operated lever and at the other endupon'lthe washen.

11; In av starting device for an explosive engine, a vbearing, a shaft supportedin the bearing with provision for rotary andlongitudinal movementand having upon its .end a clutch device for engagement with the engine, and automatic means for holding the shaft in two positions of longitudinal adjustment while permitting it to freely r0- out' of engagementwithlthe engine, combine'd with a hand operated-friction disk,

means to prevent the friction disk rotating in one direction while allowing it to rotate in the opposite direction-,.' and friction de- I vices between the friction disk' and the shaft whereby the hand operated devices may normally rotate the shaft in one direction through the friction devices, and whereas the rotation of the shaftinthe opposite direction cannot rotate the hand operated I devices.

12. Inca startingdevice for explo ive en-Y- gines, the combination of a rotatable shaft having an annular radial surface, a friction disk sleevedupon the shaft and adjustable axially thereon, friction devices for clamping the friction disk against the annular radial. surface of the shaft with a constant pressure whereby they maybe rotated tothe shaft fbr clamping the friction disk to the shaft-whereby they may be rotated togetheJ means to'prevent the friction disk rotat tg in one direction while permitting it td rotate freely in the other direction,

hand operated means for rotating the friction disk consisting. of; a lever and mechani cal-d vices between the said lever and friction iskfor rotating'the friction disk in one direction while. ermitting it to rotate freely in-the other direction without rotating the 'lever, and spring devices for keeping tion disk. I

l4. Ina starting-device for explosive en gine, the combination of; a rotatable shaft hav ng an annular projecting partand anend cylindrical'ektension beyond the annular part, an a'rmularly shaped friction creating device arranged concentric to the shaft and creating aconstantfriction with the annular the hand lever in engagement with the fricprojecting part thereof, means to prevent the annularly shaped friction device rotating in one direction while permitting it to freely rotate in the other direction, a crank handle 7 having a cylindrical hub by which it is journaled eoncentric'with' respect to the cylindrical extension of the shaft and provided with' means for engaging the annular friction device to rotate it.

In testimony of hich'. invention, I hereanto set my hand.- V ROBERT MGKEE.

VVitnes ses: m-

R. M. KELLY,

R. M. HUNTER.

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