US1470447A - Starting device for internal-combustion engines - Google Patents

Description

Get. 9, 1923. N 1,47%447 S. JENCICK STARTING DEVICE FOR INTERNAL COMBUSTION ENGINES Filed June 11, 1920 2 Sheets-Sheet 1 /22 wmw Qiiozmeys SJENCICK STARTINGv DEVICE FOR INTERNAL COMBUSTION ENGINES Filed June 11. 1920 2 Sheets-Shee t 2 Amwaior M4 3 difazfzwya' Patented Oct. 9, 1923'.

UNITED STATES s'rnrnnn .nmcrcx, or CLEVELAND, onrmnssrslvon TO eusrnvu's A. SCHANZE, or

PATENT. OFFICE.- I

CLEVELAND, OHIO.

STARTING DEVICE FOR INTERNAL-COMBUSTION ENGINES.-

Application filed June 11, 1920. Serial No. 388,196.

of starting devices embodying an intermediate pinion having planetary or rolling motion around a startin pinion into and out of mesh with the engme gear.

The object of the invention is to provide improved mechanism for controlling the motion of the intermediate pinion into and 2 out of mesh with the engine gear, said mechanism including means for retarding rotation of the intermediate pinion upon its own axis to cause it to be moved in its planetary path by the torque of the starting pinio into mesh with the engine gear, together with means for producing positive rollingmotion of the intermediate pinion as it moves into mesh to prevent clashing effect should the teeth engage radially end to end and: thereby insure full meshing relation for the driving effect.

A further object of the invention is to provide improved means for relieving the retarding effect upon the intermediate pinion after it is fully i mesh and prevent the application of the retarding effect until the starting motor shaft has practically come to rest after the starting operation, so as to avoid the usual tendency of the intermediate pinion to again move forward after the starting operation is finished and thus produce a clashing effect.

Further objects of the invention are in part obvious and in part will appear more in detail hereinafter.

The invent-ion comprises the construction and arrangement of parts hereinafter described and'claimed.

In the drawings, Fig. 1 represents a side elevation showing the invention applied to an'internal combustion engine; Fig. 2 is a longitudinal section; Fig. 3 is a sectional elevation on the line 3-3, Fig. 2, showing the parts in driving relation with the engine gear Fig. 4 is a sectional elevation on the line 4-4, Fig. 2, showing the parts in normal or retracted position; Fig. 5 is a detail view of the inner clutch member, the

view being taken from the right in Fig. 2;" A

and Fig. 6 is a detail section on the line 6-6, Fig. 2.

Referring to the drawings, 1 represents the internal combustion engine, which may be of any suitable form, and the crank shaft of which (not shown) is connected to drive the usual fly wheel 2 equipped with teeth 3 forming a large gear adapted for application of power to operate the internal combustion engine for the starting operation The starting power may come from any desired source. The drawings show for this purpose a suitable electric motor 4, the shaft 5 of which is provided with a starting pinion 6 rotatable therewith. On said shaft is mounted an oscillating or rocking frame 7.

having bearing portions 8 turning on shaft 5, said frame carrying a short shaft 9 on which is rotatably mounted an intermediate pinion 10, The teeth of said pinion are exposed on that side facing the engine gear 3, and said intermediate pinion 'has planetary motion about the axis of shaft 5 and the pinion 6 into and out of mesh with the engine gear. 4 Its normal position, when the parts are at rest, is as shown in Fig. 4, but

of arrow A, Fig. 4:, by connecting the electric motor to a source of current the torque of the starting motor turns the frame 7 with the shaft 5 and carries the intermediate pinion into meshing relation with the engine] ing relation with the engine gear and re-' turns it to the position shown in Fig. 4.

Planetary motion of. the intermediate pinion is caused or controlled by the mechanism to be described. 11 represents a hollow casing, a sleeve portion 12 of which surrounds and is rotatable upon one of the bearing members, 8. The outer wall 13 of said casing is corrugated radially as shown in Fig. 6, to form a series of crcumferen-.

-B5 when the pinion 6 is rotated in the direction swinging with the bearing member 8. On

- the outer end of the shaft, is a longitudinally movable sleeve 20provided with a diametrically extending pin 21 passing through an elongated slot 22 in the shaft, this arrangement serving to cause said sleeve to rotate with the shaft. Said sleeve is provided with a nut 23 serving as an abutment for one end of a compressionspring 24, the other end of which abutsthe wall 13 of the hollow casing. Within said casing sleeve 20 is provided with a flange 25 having corrugated radially extending clutch teeth 26 co-operating with clutch teeth 14 and on its opposite side said flange is provided with a series of projections 27 lying opposite the inner faces or cam portions 28 of the weights on the locking pawls 16. A projection 30 on the stationary frame co-operates with stops. 31, 32 to limit the rocking movement of frame 7 toward and away from the gear.

The operation is as follows:

Let, us assume the parts in normal position with the intermediate pinion out of mesh with the engine gear. The several pawls 16 swing freely on their respective pins and work somewhat after the manner of the pawls in a Hartshorn shade roller. At least one of said pawls therefore is in engagement with the teeth of ratchet 19. Spring 24 exerts its expansive effect upon the nut 23 and holds the clutch'teeth 14, 26 in engagement with the rojections 27 out of range of the cam sur aces 28. In this condition, therefore, driving connection is established from the shaft 5. through the sleeve 20 and clutch teeth 26, 14 to the casing 11 and from said casing through the pawls 16 and ratchet 19 to the rocking casing 7. Consequently when the starting motor begins to rotate by connecting the same to a source of cur-' rent the connection of the mechanism described produces a drag or retarding effect, preventing the rotation of pinion 10 upon its own axis and producing rocking motion of the frame 7 carry in the intermediate pinion in a planetary pat about the axis of shaft 5 toward the engine gear.

Two conditions may now exist.

In the first condition the pinion 10 and gear 3 may be so related to each other that their teeth more directly into mesh without interfering with each other. If this happens the several gears engage and when full meshing relation is reached no further movement of the frame 7 can occur so that said frame becomes stationary and the other parts connected'to the shaft 5 begin to ro tate. Usually the slightrotative effect when the shaft begins to rotate moves the pawls 16 by centrifugal action out of engagement with the ratchet 19, but if such action should not occur the casing 11 is held stationary and the teeth 26 begin to ratchet or slip past the teeth 14. The first such slipping effect 1 causes the sleeve 20 to move longitudinally relative to shaft 5, or to the right in Fig. 2, and thereby moves the projections 27 into engaging relation with the projections 18 tion between the pinion and gear. Inthe present instance, however, such engagement automatically prevents further rocking motion of the frame. 7. The clutch teeth 26, 14 thereupon slip past each other and free the pawls 16 as before and allow the shaft 5 to continue its rotation independently of the frame 7. This rotation immediately turns the pinion 10 about its own axis and rolls it into full meshing relation with the gear 3, the further operation continuing in the same manner before described.

Full meshing relation having been established' and the engine having been turned over, it starts under its own power and the increased speed of rotation kicks out the intermediate pinion, thereby rocking the frame 7 back to its original position. Said frame will have no tendency to again advance and return the intermediate pinion to meshing relation with the intermediate gear, because so long as the starting shaft 5 continues to rotate the pawls 16 are held outwardly by the centrifugal effect, but when the starting shaft 5 comes to rest then said pawls also come to rest and at least one thereof. drops into engagement with the ratchet 19, the parts being then ready for another starting operation.

the said shaft, into and out of mesh with.

the gear, and means for retarding rotation of said intermediate pinlon about its own axis to cause orbital movement thereof into meshing relation with the gear, said means including a pawl and ratchet mechanism and relatively movable clutch members for controllin the same.

2. Startmg mechanism for operative connection with a gear that is adapted to be driven by an internal combustion motor, comprising a starting shaft carrying a primary driving pinion, an intermediate pinion adapted to be driven thereby and adapted to move in an orbital path about the said shaft, into and out'of mesh with the gear, and means for retarding rotation of said intermediate pinion about its own axis to cause orbital movement thereof into meshing relation with the gear, said means including a clutch mechanism and a pawl and ratchet mechanism, and means for controlling said mechanism.

3. Starting mechanism for operative 'connection with a gear that is adapted to be driven by an internal combustion motor,

i comprising a starting shaft carrying a primary driving pinion, an intermediate pinion adapted to be driven thereby and adapted to move in an orbital path about the said shaft into and out of mesh with the gear, and means for retarding rotation of said intermediate pinion about its own axis to cause orbital movement thereof into meshing relation with the gear, said means including a spring controlled clutch and a pawl an ratchet. mechanism and means for controlling the same.

4. Starting mechanism for operative connection with a gear that is adapted to be driven by an internal combustion motor, comprising a starting shaft carrying a primary driving'pinion, an intermediate pinion adapted to be driven thereby and adapted to move in an orbital path about the said shaft intoand out of' mesh with the gear, means for retarding rotation of said intermediate pinion about its own axis to cause orbital movement thereof into. meshing relation with the gear, and centrifugal means con trolled by the operation of said starting shaft for releasingthe intermediate pinion to rotate about its own axis upon said intermediate pinion being brought into mesh with the gear.

5. Starting mechanism for operative connection with a gear that is adapted to be driven by an internal combustion motor, comprising astarting shaft carrying a primary driving pinion, an intermediate pin ion adapted to be driven thereby and adapted to move in an orbital path about the said shaft into and out of mesh with the gear, and means for retarding rotation of said intermediate pinion about its own axis to cause orbital movement thereof into meshing relation with the gear, said means including a pawl and ratchet mechanism and relatively movable clutch members for disengaging said pawl and ratchet for releasing the intermediate pinion to rotate about its own 6. Starting mechanism for operative connection with a gear that is adapted to be driven by an internal combustion motor, comprising a starting shaft carrying a primary driving pinion, an intermediate pinion adapted to be driven thereby and adapted to move in an orbital path about the said shaft into and out of mesh with the gear, and means for retarding rotation of said intermediate pinion about its own axis to cause orbital movement thereof into meshing relation with the gear, said means including a clutch mechanism, oneof said clutch members being adapted to effect release of said intermediate pinion to rotate about its own axis upon said intermediate pinion being brought into contact with the gear.

7 Starting mechanism for operative connection with a gear that is adapted to be driven by an internal combustion motor, comprising a starting shaft carrying a primary driving pinion, an intermediate pinion adapted to be driven thereby and adapted to move in an orbital path about the said shaft into and out of mesh with the gear, and means for retarding rotation of said intermediate pinion about its own axis to cause orbital movement thereof into meshing relation with the-gear, said means including a member adapted to move axially said member will effect release of said intermediate pinion to rotate about its own axis upon said intermediate pinion being brought into contact with the gear.

8. Starting mechanism for operative connection with a gear that is adapted to be driven by an internal combustion motor, comprising a starting shaft carrying a pri-' mary driving pinion, an intermediate pinion adapted to be driven thereby and adapted to move in an orbital path about the said shaft into and out of mesh with the gear, means fOlJ'GtilIdlIlg rotation of said intermediate pinion about its own axis to "cause orbital movement thereof into meshing relation with the gear, means controlled by the rotation of said starting shaft for releasing the intermediate pinion to rotate about its own axis. and means for insuring initial operation of said last named means upon said intermediate pinion being broughtinto contact with the gear.

' 9. Starting mechanism for operative connection with a gear that is adapted to be driven by an internal combustion motor, comprising a starting shaft carrying a primary driving pinion. an intermediate pinion adapted to be driven thereby and adapted to move in an orbital path about the said shaft into and out of mesh with the gear, means termediate pinion being brought into contact with the gear. 7

10. Starting mechanism for operative connection with a gear thatis adapted to be driven by an internal combustion motor, comprising a starting shaft carrying a primary driving pinion, an intermediate pinion adapted to be driven thereby and adapted to move in an orbital path about the said shaft into and out of mesh with the gear, a

pawl and ratchet mechanism, one part of said mechanism having positive operative connection with said intermediate pinion,

the other member having operative connection with said primary pinion, and relatively movable clutch members 7 for controlling said mechanism whereby there will be effected a retarding of the rotation of said intermediate pinion about its own axis to cause orbital movement thereof into meshing relation with the gear.

11. Starting mechanism for operative connection with a gear that is adapted to be driven by an internal combustion motor, comprising a starting shaft carrying a primary driving pinion, an intermediate pinion adapted to be driven thereby and adapted to move in an orbital path about the said shaft into and out of mesh with the gear, a pawl and ratchet mechanism, one part of said mechanism having positive operative connection with said intermediate pinion, a yieldable connection between the other memher of said mechanism and said starting shaft, and means for controlling said mechanismwhereby there will be effected a retarding of the rotation of said intermediate pinion about its own axis to cause orbital movement thereof into meshing engagement with the gear.

12. Starting mechanism for operative con nection with a gear that is adapted to be driven by an internal combustion motor, comprising a starting shaft carrying a primary driving pinion, an intermediate pinion adapted to be driven thereby and adapted to move in an orbital path about the said shaft into and out of mesh with the gear, a pawl and ratchet mechanism. one part of said mechanism having positive operative connection with said intermediate pinion. a yieldable clutch connection between the other part of said mechanism and said primary pinion, whereby the intermediate pinion will be retarded in its rotation about its own axis so as to cause orbital movement thereof into contact with the gear, means carried by one of said clutch members and controlled by the operation of said starting shaft for disengaging the pawl and ratchet to effect release of said intermediate pinion upon contact thereof with the gear, whereby said intermediate pinion will rotate about its own axis and transmit power to the gear.

13. Starting mechanism for operative connection with a gear that is adapted to be driven by an internal combustion motor, comprising a starting shaft carrying a primary driving pinion, an intermediate pinion adapted to be driven thereby and adapt ed to move in an orbital path about the said shaft into and out of mesh with the gear,

a pawl and ratchet mechanism comprising centrifugal pawl members under control of the operation of said starting shaft, said pawl and ratchet tending tolock together said primary and intermediate pinions, whereby the intermediate pinion will be retarded in rotation about its own axis so as to cause orbital movement thereof into con-.

tact with the gear, and means for insuring initial disengagement of said pawls from said ratchet upon the intermediate pinion being brought into contact with the gear.

14. Starting mechanism for operative con nection with a gear that is adapted to be driven by an internal combustion motor, comprising a starting shaft carrying a primary driving pinion, an intermediate pinion adapted to be driven'thereby and adapted to move in an orbital path about the said shaft into and out of mesh with the gear, a pawl and ratchet mechanism comprising centrifugal pawl members under control of the operation of said starting shaft, said pawl and ratchet mechanism having operative connection with, said intermediate pinion, clutch means providing operative connection between said pawl and ratchet meohanism and said primary pinion, said mechanisms constituting a lock between said pinions whereby the intermediate pinion will be retarded in its rotation about its own axis so as to cause orbital movement thereof into contact with the gear, and means carried by one of said clutch members and controlled by the operation of said startingshaft for effecting initial disengagement of said pawls from said ratchet upon the intermediate pinion being brought into contact with the gear.

about said shaft into and out of mesh with the gear, pawl and ratchet connection be tween said frame and primary pinion for retarding rotation of said intermediate pinion about its own axis to cause orbital movement thereof into meshing relation with the gear, and relatively movable clutch members for controlling said connection.

16. Starting mechanism for operative connection with a gear that is adapted to be driven by an internal combustion motor, comprising a starting shaft carrying a primary driving pinion, an intermediate pinion adapted to be driven thereby and adapted to move in an orbital path about the said shaft into and out of mesh with the gear,

In testimony whereof I alfix my signature.

STEPHEN JENCICK.

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