US1111885A - Engine-starter. - Google Patents

Description

S. DEUTSGH.

ENGINE STARTER.

APPLICATION FILED SEPT. 20,1913.

Patented se t. 29,1914.

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WITNESSES.

S. DEUTSOH.

ENGINE STARTER.

APPLICATION FILED sEPT. 26,1913,

Patented Sept. 29, 1914.

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UNITED STATES PATENT omen.

SIMON DEUTSCH, 0F DETROIT, MICHIGAN.

ENGINE-STARTER.

To all whom it may concern:

Be it known that I, SIMON DEUTSCH, a citizen of the United States, and a, resident of Detroit, in the county of Wayne and State of Michigan, have invented a new and Improved Engine-Starter, of which the fol- This invention relates to electric starting and lighting devices for automobiles, launches and wherever else internal combustion engines may be used, and its object is to provide an armature shaft for a combined electric generator and motor which may be geared to the crank shaft of the engine in such a manner that the engine can drive the armature shaft at desired speeds and be driven by the armature shaft at a greatly reduced ratio of speeds, the armature shaft being adjustable so that the engine shaft can be revolved at other ratio of speeds by 'the armature shaft when the latter is turned by mechanical means or by hand.

This invention consists, in combination with the crank-shaftand crank-case of the engine, of a generator-motor housing mounted on the crank-case, an armature and armature shaft slidable and revoluble in the housing, and gears mounted between the armature shaft and the crank-shaft, whereby the crank-shaft may .be turned one revolution under the power of the generatormotorfor a large number'of turns of the armature, and whereby the armature-shaft may be revolved at the same speed as the crank-shaft when the engine runs under its own power.

It further consists in so mountin and constructing the armature-shaft that 1t can be adjusted manually to so operatively engage the means connecting it to the crankshaftof theengine that the crank-shaft can be revolved at the speed of the armatureshaft.

In the accompanying drawings, Figure 1 is a central longitudinal section I of this improved starting device. '1 Fig. 2 is a front elevation of the earing connecting the armature shaft-with the crank-shaft of the engine. Fig. 3 is a central longitudinal section of the internal gears of this connecting mechanism. Fig. 4 is a similar section of the abutment ring. Fig. 5 is a similar Specification of Letters Patent. P t t d Sept, 29, 1914, 7 Application filed September 26, 1913. Serial No. 791,895.

parts throughout the several views.

In the drawings, the crank-case 1, hearing 2 and crank-shaft 3 may be of any well known construction. I

'The crank-caseis shown formed with a tubular extension 4 which receives the cas; ing of an electric generator-motor, consist? ing of the heads 5 and 6, the field m ets 7, the cylindrical portions 8 and 9, the ange 10, the bolts 11, and the hubs 12 and 13. Rollers 14 in the hub 12 are held in position by the plate 15, and carry one end of the shaft 16 of the armature 17. A roller bearing 18 carries the other end of the shaft. The details of the generator-motor are conventionally shown as the construction thereof, and, except as pointed out, are immaterial. A pin 19 extending through this shaft receives the pressure of the collar 20 and of the spring 21. A cap 22 can be removed so that the crank-handle 23 can be slipped onto the end of the armature shaft, as indicated by dotted lines in Fig. 1.

Secured to the crank-shaft 3 is the hub 25 of the internally toothed gear-r26. A timing gear 27 is shown mounted on this hub, but forms nopart of this invention.

ber of teeth than the internally toothed gear 26, but is of such a diameter that when mounted on the crank-pin 28, one or more of its teeth will mesh with teeth of the internal. gear 26. A circular ring 32 on the ends of the arms 33 of the pawls. The

other arms 34 of these pawls act as counterweights. These pawls are provided with pins 35 that are mounted in the holes-36 in the gear 29. This gear has projecting lugs or jaws .37, the use of which will be indicated later on. If desired, rollers 38 may be mounted in the bore of this gear 29, and be held in position by the plate 39. While the crank-shaft and entire armature shaft are shown in line with each other, this isnot absolutely necessary, as only the adjacent portion of the auxiliary shaft need .be concentric with the internally toothed gear 26.

On the crank-pin 28 is mounted a ratchet wheel whose teeth may be engaged by the teeth 41 on the arms 33 of the pawls. This ratchetwheelis counterborcd on one side to receive the jaws 37 on the gear 29 and its web 44 is formed with slots to receive the pin 43 of the armature. The operation of this mechanism is as follows Under normal conditions, the engine crankshaft will revolve to the right in Fig; 2 and the internal gear 26 will carry withit the gear 29 because of the engagement of their teeth. This will cause the arms'ilt of the pawls to swing out by-centrifugal force and the teeth 41 on the arms 33 to engage the teeth of the ratchet wheel 40, which, having slots 45 that receive the pin'43 of the armature shaft, will revolvethis shaft and the armature 17, generating electricity which can be used immediately or stored. When the engine is to be started by the electric device acting as a motor, electric energy is properly applied to revolve the armature shaft in the usual manner, which will cause the crank-pin 28 to carry the gear 29 around within the internal gear 26. At the stopping of the engine, the heavier arm 34 of one or both pawls will swing the end of the arm 33 into engagement with the -abutment ring 30, and as the turning of the shaft will tend to turn back the gear 29,

these arms 33 soon rest in the notches 31 and prevent further backward revolution of the gear 29. Continued revolutions of the jshaft 16 .Will thereafter result in the usual action of differential gears occurring between the gears 26 and 29,- and the gear 26 will be turned forward at each revolu-- tion of the armature shaft an angular dis- ,tance of as man teeth as it has inexcess of the teeth of t 'e gear 29. If the gear 26 has thirty teeth and the gear '29 has twentyeight teeth, then the crank-shaft 3 will be turned one revolution at each fifteen revolutions of the armature shaft.

' In case no electricity can be obtained to ener ize the generator-motor, and it is desire to start the engine, the cap 22 can be removed and the crank-handle 23 connected to the front-end .of the armature shaft. The

- crank-handle, armature shaft and armature are pushed backagainstthe tension of the spring 21 until the pin43 enters between the jaws 37 on the gear 29. Turning of the crank-handle 23 will then turn the gears 29 and 26 and the crank-shaft 3 of the engine.

JAS soon as the crank shaft begins to revolve 'under power of the engine at greater speed than can be imparted by the crankhandle, theinclined rear faces of the jaws 37 will force the pin 43 out of the path of these jaws.

Many changes in the details of construction of this mechanism may be made by those skilled in the art without departing from the spirit of my invention as set forth in the following claims.

I claim.

1. In a motor-generatm' for use with internal combustion engines, the combination with the engine shaft and an internally toothed gear mounted thereon, an armature shaft mounted concentric with and having a crank-pin extending toward the engine shaft, an externally toothed gear on the crank-pin meshing with the internal gear, an abutment ring having pockets, and pawls mounted on the external gear and adapted to engage in said pockets to prevent said external gear from revolving backward.

2. In a motor generator for use with internal comlmstion engines, the combination with the engine shaft, and a motor driven auxiliary shaft shiftable longitiulinally upon its axis, means connecting said shafts whereby the ,first may drive the second at equal speed and the second drivethe first at reduced speed, and means whereby thesecond, when longitudinally shifted, may drive the first at equal speed. 7

3. The combination of a pair of shafts, means connecting the shafts whereby each can drive the other at equal speed when the shafts have a predetermined position relative to each other, and whereby one will drive the other at. greatly reduced speed when their relative positions are changed.

4. The combination of a pair of shafts in linewith each other, means connecting the shafts whereby each may drive the othcr at equal speed whentheir adjacent ends are' a predetermined distance apart, and whereby one will drive the. other at greatl reduced speed when such ends are mover farther apart.

5. In a motor-generator for use with internal combustion engines, the combination of the engine shaft, an armature shaft of an electric generator motor having one end adapted to receive a crank-handle, differential gearing connecting said shafts whereby the engine shaft may drive the armature shaft at equal speed and the armature shaft may drive the engine shaft at equalspeed or greatly reduced speed, depending on the relative positions of the shafts.

' 6. In a motor-generator for use with internal combustion engines, a shaft connected to the engine, an internally toothed gear mounted thereon, an armature shaft mounted concentric with and having a crank pin extending toward the first mentioned shaft, an externally toothed gear rotatably mounted on the crank pin, a fixed member having pockets, a pawl pivotally mounted on the externally toothed gear whereby a rotation of the driving shaft causes a rotation of the driven shaft at a reduced speed, means on the pawl for engaging with the teeth 'on the ratchet wheel when the speed of the driven shaft exceeds a predetermined amount, means for either rotatably connecting the driving shaft directly to the externally toothed gear to drive the latter therefrom or for connecting the drivingshaft to the ratchet wheel to be driven therefrom.

8. The combination of a driving shaft and a driven shaft, an internally toothed gear secured to the driven shaft, a crank-pin rigidly connected to the driving shaft, an externally toothed gear rotatably mounted on the crank-pin, a ratchet wheel also mounted on the crank-pin, a fixed member having pockets therein, a pawl pivoted on the externally toothed'gear, and having a portion adapted to be received by the pockets in the fixed member to prevent backward rotation of the externally toothed gear whereby a rotation of the 'drivin shaft causes a rotation of the driven sha gaging with the teeth on the ratchet-wheel when the speed of the driven shaft exceeds a predetermined amount, means for rotatablyconnecting the driving shaft directly to the externally toothed gear to drive the latter therefrom, means whereby the drivat a reduced speed, means on the trawl forj 'ena driven shaft, an internally toothed gear secured to the driven shaft, a crank pin rigidly connected to the driving shaft, an externally toothed gear rotatably mounted on the crank-pin, a fixed member having pockets therein, a pawl pivoted on the externally toothed gear and having a portion ada ted to be received in the pockets in the xed member to prevent backward rotation of the externally toothed gear, whereby a rotation of the driving shaft causes a rotation of the driven shaft at a reduced speed, a ratchet Wheel mounted on the crank-pin, means on the pawl for engaging with the teeth on the ratchet wheel when the speed of the driven shaft exceeds a predetermined amount, a pin projecting from the driving shaft, said ratchet wheel having formed therein a slot with the edgesof which the pin engages when the driving shaft is in one position of adjustment, whereby the driving shaft may be driven from the driven shaft and at the same speed as the latter, means on the externally toothed gear with which the pin speed as the latter, and means whereby the driving shaft is automatically thrownout of direct connection with the driven shaft when the speed of the latter exceeds that of the driving shaft.

In testimony whereofI have signed this ecification in the presence oftwo subscribwitnesses.

-..- 7 SIMON DEUTSCH,

Witnesses: v

. HUGO W. KREINBRING,

L. M. SPENCER.

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