US1231362A - Engine-starter system. - Google Patents

Description

, J. H HUNT. ENGINE STARTER SYSTEM.

APPLICATION FILED 'SEPT. 3' $914- I Patented J line 26, 1917.

a The next movement of the main operating member causes the entire planetary gearing,

UNITED STATES PATENT OFFICE.

JOHN HERMAN HUNT, OF DAYTON, OHIO, ASS IGNOR TO THEJJA'YTON ENGINEERING LABORATORIES COMPANY, A CORPORATION OF OHIO.

ENGINE-STARTER. SYSTEM.

Specification of Letters Patent.

Patented-June 26,,1917.

Application filed September 3,..1914. Serial No. 859,968.

To all whom it may concern.-

Be it known that I, JOHN IIERMAN HUNT, residing at Dayton, county of Montgomery, and State of Ohio, have invented certain new and useful Imfprovements in Engine- Starting Systems, 0 which the following is a full, clear, and exact description.

This invention relates to an improvement in electrical systems for internal combustion or explosion engines, and more particularly to systems of this type wherein an electric machine is driven as a generator, or is operable as a motor for starting purposes.

One of the objects of the present invention is to provide a special planetary gear ing between the electric machine and thecombustion engine, which is to be brought into u-se when the machine is operating as a motor for starting purposes, so as to effeet a partial reduction in speed between the armature shaft and the engine crank shaft, and also to facilitate the use of a friction or other eflicient drive between the fly- Wheel and an element actuated by the motor.

A further objectof the present invention relates to a means for controlling the connection between the electric machine and the engine, both when the machine is operating as a motor and also as a generator.

, More specifically, the controlling means is capable of a plurality of operations, preferably arranged in progression. Thus an initial movement of the main operating member will lock or so brake certain of the elements of the planetary gearing that a speed reducing gear is established, whereby when the starting device is operating as a .motor, theengin'e will be cranked at a much slower speed than the speed of the" motor.

together with the looking or braking assembly, to "be oscillated so as to bring a pinion or friction member, which forms a part of the gearing, into engagement or contact with the flywheel or any suitable part of the engine. I g

Further objects and advantagesof the present invention *wi'll be apparent ,from the following description, reference, being had to the accompanyuigfdiawing, wherein one preferred formof the. present invention is clearly illustrated type, the one shown in the In the drawings: Figure l is a fragmentary top plan view; of an automobile chassis, and engine in eluding one form of the present invention. Fig. 2 is a detail view of the controlling mechanism included in the present invention.

Fig. 3 is an end view gearing;

Fig. 4 is a side view of the structure shown in Fig. 3, witlrthe exterior casing shown. in section for the sake of Clea-mess.-

Referring to the" drawings, the side frames of the chassis are indicated by the numeral 20. Between these frames and upon cross members 21, the engine 22 is suitably mounted. This engine may be of any preferred-x.

drawing being of the four cylinder, four cycle type, and-is shown for the purposes of illustration only and is not to be considered in any way as a limitation of the invention. The starting device 24 comprises an lectric machine which is mounted adjacent to the engine, and so arranged that one end of the armature shaft 25 is provided with a so sprocket wheel 26, which is adapted to connected with a sprocket wheel 27, b means of a flexible shaft or belt-'28. The sprocket wheel 27 may be mounted directly on an extension of the crank shaft 29,*or 35 on any other shaft which may be connected with the crank shaft or driven thereby "in any suitable manner. The armature shaft 25 also has anextension at its other end, as at 30, the extreme end of'which foi'r'ris9o of the planetary i one part of the universal coupling, as 11 1532.

planetary gearing.

ThlS planetary gearing comprises a cars mg 40 and three sets of 'pinion's' 3.7, eatih set being mounted upon the casin 40. Each loo' ofthe sets of pinions 37=compri 'onelarge pinion 41 and a small pinion 42, the sn'iiill pinion engaging with a. spur gear e l 5,fwhich 1S made fast to. the bra re shaft 46. This brake shaft carries at its extreme re'ar-je djaiofi a, casing 47, about which the 'frictionbrake band 48'isplaced, and is operated by meansof'the member'49, in sucha manner as to render the pinion 45 stationary, relative to the other"'-p inions forming the planetary The casing 40 is provided with an ex- .5 roller 56, so that any rotation of the casing .40 will effect'a consequent rotation of'the friction driving-element or roller 56. This entire assembly, that is, the shaft33, casing 40, roller 56 and the brake drum 47, are so mounted upon the lever 60, that upon movement of the controlling element 49, this entire assembly will be shifted into such I position as to bring the friction roller into 16' 4 This position will be maintained until the starting operation has beencompleted.

- However, the controlling element 49 is so arranged that upon an initial movement thereof, the brake band 48 will first be pulled tight over the drum 47, whereby the shaft 46. and its pinion will be prevented from 1 turning.

This arrangement is effected by means of controlling element 49- and one end of the jbrakeband fastened at its one extremity,

while thejop osite end of the brake band is :fastened'at t e other end of the lever 65, as

tended collar55, which carries the friction Y contact with the flywheel of the engine.

. 'From the above descriptiom'it will be seen ?tha't'the lever 49 has a progressive action.

That is, the com lete operation of said lever' performs amu tiplicity of functions, the first one ofwhich is to tighten up the brake .band in such a manner as to lock the shaft 46,- and the second, operation isto carry the entire gear mechanism into such position that the friction element willengage the flywheelfor starting purposes.

as the engine has become self-ac- .tuatin the lever 49 is released and under the in uence of the spring 68, the assembly" 45 comprising the shaft 33, casing i0, roller 56 and the brake assembly,'will move back into its normal position. This movement of the i 1 parts mentioned above will be stopped by ,means. of the projection 69,'w'hich will efl- 50* age with the shoulder .70, formed on .t e

ever 60. s a

self-actuating, it will immediately start to drive the electric machine 24 as a generator I through the sprocket 27, belt 28 and sprocket 26, throu h theshaft 25.

"While have shown-and described one preferred embodiment of the present invention, I'reserve the. rightto make. whatever changes or alterations in the construction and combination of the various elements and ing purposes.

parts comprising the present invention, and

also the location and arrangement thereof, as may come within the scope of the appended clai'ms, l 66 -What I claim is as follows.

1. In -astarting device, thecombination with an internal combustion or explosion. engine; of an electric machine operable asamotor for starting purposes, a planetary 70v gearing between the one end of the electric machine and the engine; and means f 'inov ing said-planetary gearing into and out of 5 driving connection with the engine for start- 2. In a starting device for internal combustion or explosion engines,;the combination with a ower unit; a planetary gearing between said power unit and the engine; an operating member for initially renderin saidplanetary gearin' operable as a spe reductiondevice and nally connecting the planetary gearing in operative relation to the engine to be started. Y

.-'3. In a starting device, the combination the straight arm lever 65, which is ful with an internal combustion or "explosion crumed at the point 66; This lever has the ing the planetary gearing through said uni- 100,

versaljoi'nt into driving engagement with the engine.

5. In an engine-starting device, the combination with a" starting device therefor comprising a dynamo electric machine operable as aj-motor for starting purposes; a planetary gearing having a' universal ]o1nt connection with the electric machine'and shiftable into and out .of-driving engagement 7 with the engine; and aTcommon operating member capable of an initial operation to v render said planetary gearin operable as a L Of course, as soon as the engine becomes speed reduction device, an of a further movement to shift the planetary gearing intooperative driving relation to the engine for starting purposes.

In testimony v vhereof I afiix my signature in the presence of two subscribing witnesses. JOHN HERMAN HUNT.

AIIIER IED Josnru W. MnDoi z ZLD.

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