US989057A - Starting device for internal-combustion engines. - Google Patents

Description

DEVICE EoE INTERNAL ooMBUsTIoN ENGINES.

APPLICATION FILED JULY 10, 1908.

Patented Apr. 11, 1911.

STARTING 2 SHEETS-'SHEET 1.

W. 11'. 110211111 a; s. o. IGOU. STARTING DEVICE -FOR INTERNAL GOMBUSTION ENGINES.

' APPLICATION FILED JULY 10, 1908.- 989,057. Patented Apr. 11,1911.

2 SHEETS-SHEET 2.

WELTON'I-I. ROZIER .AND SAMUEL MISSOURI.

miTED sTATEs PATENT loEEioE.

C. IGOU, 0F ST. LOUIS., MISSOURI, ASSIGNORS TO MOTOR AND DEVICE COMPANY, OF ST.` LOUIS,

MISSOURI, A CORPORATION OF vilaiaaai Apr. 11, iaii.v

Application led July V10, 1908. Serial No. 442,837.

Our invention relates to means for supplying an initial spark to start an internal.

combustion engine and is particularly designed for use in connection with such engine when applied to a motor vehicle.

The -engines of motor vehicles are now usually supplied with sparks 'for igniting the explosive `charge by means of electrical jgenerators ofthe magneto type. With such generators it is necessary that the generatf ing machine be run in timewitli the engine,

that is, the armature of the magneto must make a certain definite number of revolutions to a given number of revolutions of the crank shaft .of the engine so that the.

time of passage ofthe poles of the machine may bear a denite relation to the time'of ignition of the cylinders' of the engine. Owing to this it is not possibleto independently operate the magneto to produce an initial charge. Owing to this fact the entire engine must be manually'operated to startit notwithstanding the fact that a sufficient charge will remain in the cylinders for a great length of time to start the engine if means is supplied for applying the sparks thereto. Heretofore advantage has been taken of retention-of the charge by i supplying the machine with what is known as a dual ignitionsystein, such system includiiig in addition to the magneto machine a storage battery and induction coil.

-It is the object of our invention to provide means whereby a limited movement can be given to the armature of the magneto-Y. independent of the engine, thus dispensing with the storage ba'ttery and induction coil and Yat the saine -time providing means lwhereby the engine and magneto are kept in proper time during the ordi-nary operation of the machine.

H. RoziERl In the accompanying drawings which illustrate one form of igniting device made in accordance with our invention, together with a portion of a motor vehicle to which the same is applied, Figure 1 is a side elevation of the niagneto'and operating devices therefor, Fig. 2 is an end view of the de vices shown in Fig.y 1, aportioii of the connections being removed, Fig. 3 is a section through the gearing connecting the engine and magneto, Figs. Ltand 5 are detailed views of some of the parts shown in Fig. 3,

Figa-6A is a. detailed view of the means for returning'the rack to normal position, and

Fig. 7 is a top plan view on a reduced scale of the front part of a niptorvehicle con-- taining our device. l

Like marks of reference refer to similar partsv in the several views of the drawings. 10 is the frame forming the forward part of the^ motor vehicle on which is mounted an internal combustion engine 1-1 of any suitable type. The engine 11 is supplied with sparks for igniting the charges in its cylinders by means of the magneto 12.

Rigidly mounted on the end ofthe armature shaft 13 of the magneto 1'2 is a toothed disk 14. The disk 14 is provided with a huh 15 on which' 'is'loosely mounted a beveled gear wheel 16.' The beveled gear wheel 16 is provided with a sleeve 17 fitting over the hub 15 as best shown in Fig. 3. The disk 14 and beveled gear wheel 16 are recessed on their opposing faces so as to form a chamber 18 adapted to receive the coil spring 19. This coil spring 19 is 'attached' at one end by means of apin 20 to the sleeve 17 on the beveled gear other by means of a pin 21to"the toothed .disk 14. Thebeveled gear wheel 16 is provided with a eut-away portion 22 preferably wheel 16 and at they extending about half way around it-s circumference. This cut-away adapted to receivea lug 23 formed on the toothed disk 14. This allows of a limited -movement between the disk 14 and the b eveled gear wheel-16` and at the same time thesev two parts are normally lheld together( byV means of the tension of the' coil spring 1%). so that the lug 23 is 'retained in the position shown irr.Fig. 1of the drawings. In order tol permanently lock these 'parts' tQ- gether in caser the spring 19 l1 l SA. broken orY weakened, we provid? a hole 2,5

portion 22 is A loecornefV beveled foi-ined partly in the lug' and partly in the 'adjacent part of the wheel 16 so that by the insertion of a screw or pin the parts may be firmly locked together.

The beveled gear Wheel 16 mesheswith a gear wheel 27 carried on an upright shaft 28 connecting the crank shaft (not shown) of the engine with the shaft 29 which drives the valve gear ofithe engine. With the particular type of engine and magneto shown these two wheels 16 and v27 are of the same diameter so that the armature of the magneto makes one revolution to each revolution ofthe crank shaft on the engine. i

In order to rotate the armature of the magneto l2 independently of the engine we provide a rack 30 which is normally out of engagement with the toothed disk 14 but is adapted to be moved Ainto engagement therewith. This rack 30 runs between guide strips 31 secured on the bracket 32 carrying the magneto 12. Pivoted to the end of the rack 30 is one end of a link 33, the opposite end of which is pivoted to a'bell crank lever 34 mounted upon a short shaftv 35 Carried in a bracket 36 depending from the floor 37 of the Vehicle.v The shaft 35 is surrounded by a helical spring 38 which engages with the bracket 36 at one end and at the other with the bell crank lever 34 so as to normally hold the bell crank lever in position Vto withdraw the rack 30 from engagement with the toothed disk 14. The bell crank lever 34 has pivoted to it a rod 39 projecting' through the iioor 37 and pro` vided at its upper end with a pedal piece 40 by means of which the device ,is operated.

In the operation of our device, when it is desired to start the engine 11, if a sufficientcharge is retained in the cylindersof the engine, it is only necessary to place the foot upon the pedal piece` 40, thus operating the bell crank lever 34-and driving the rack30 into engagement with the toothed disk 14, thus rotating said disk against the pressure of the spring 19 so as to move the armaturel l of themagneto 12 in the opposite direction to that iii which it normally runs. As soon as the pedal piece 40 is released the spring 38 will return the rack to its normal position carrying with it the wheel 14 and consequently rotating the armature of the magneto in the proper direction to produce an initial spark for igniting the engine. As soon as the engine is ignited, the movement of the armature will be continued -in the usual manner, the tension of the spring 19 vbeing suiiicient to hold the parts 14 and 1G together as though made in one piece. The rack 30 moves entirely out of engagement with the wheel 14 and thus does not interto move said fere with the proper operation of the dcbustion engine, of an electrical generator therefor, gearing for driving said'generator intime with said engine, means for permitting a limited movement of said generator relative to said engine, and connections independent of the engine adapted to engage with the generator when it is in any position generator to produce an initial spark.

2. The combination with an internal combustion engine, 'of anV electrical generator therefor, gearingfor driving said generator in time with said engine, spring controlled means for permitting a limited movement of said generatorfrelative. to said engine, and toothed connections independent of the engine adapted to engage with the generator when it is in any position to move said generator to produce an initial spark.

3. The combination with an internal combustion engine, of an` electrical generator for said engine, gearing for driving said generator in time with said engine, spring controlled means for permitting a limited movement of said generator relative to said engine, said means being provided with a vlocking device for rendering the vsame inoperative, and connections independent of the engine for movingsaid generator to produce an initial spark.

4. The combination with an internal com'- bustion engine, of an electrical generator therefor, gearing for driving said generator in time with said engine, means for vperf mitting a limited movement of said generator relative to said engine comprising two springA connected parts, one of which is rigidly ,connected with said generator and provided with teeth, and toothed connections independent of the engine for engaging and rotating said part rigidly connected vwith 4the generator to produce an initial spark.

In testimony whereof We have hereunto set our hands and aiiiXed lour seals in the presence of the two suscribing witnesses.

wELToN H. RoziER.. [L 8.] SAMUEL c. icon. [Le] Witnesses:

RHODES E. CAVE, W. A. ALEXANDER.

Copies of this patent may 'be obtained for ve cents each, by addressingthe Commissioner of Patents,

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