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Publication numberUS1316998 A
Publication typeGrant
Publication dateSep 23, 1919
Filing dateNov 19, 1914
Publication numberUS 1316998 A, US 1316998A, US-A-1316998, US1316998 A, US1316998A
InventorsJoseph Bijur
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 1316998 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)




.1 ,3 1 6,998, Patented sept. 23, 1919. l




APPLICATION FILED NOV. 19, |914. A 1,316,998. PatentedSept. 23, 1919.


1I JJ 57 59g 58 l I l I v t@ 'HIP I 25 27 24 f i 26 8 Q) 31 -lV/TNESSES:





Patented sept. 23, 1919.

Application led November 19, 1914.l Serial No. 872,916.

` To aZZ whom it may concern:

Be it known that I, JOSEPH Bunn, a. citizen of the United States, and residlng at 122 East th street, New York, in the county of New York and VState of New York, have invented new and Improved Automobile Machinery, of which the following specification is a full disclosure.

This invention ,relates to automobile machinery, although certain features thereof are applicable in other relations.

011e of the objects thereof is to provide simple and compact disposition of parts whereby a dynamo is effectively connected with an internal combustion engine.

Another object is .to provide apparatus of the above type in which the dynamo 1s maintained in most efiicient condition without complicating the formpor arrangement of the parts.

Another object is to provide apparatus of the type first mentioned in which .the power transmitting elements are adapted to meet the hardestuse without injury.

Other objects will be in part obvious from the annexed drawings and in part indicated in connection therewith by the following analysis of this invention.

This invention accordingly consists in the features of construction, combinations of parts, and in the unique relations of the members and in the relative proportionlng and disposition thereof; all as more completely outlined herein.

To enable others skilled in the art so fullyto comprehend the underlying features thereof that they may embodyw the same by the numerous modifications in structure and relation contemplated by this invention, drawings depicting a preferred form have been annexed as a part of this disclosure,

` and in such drawings, like characters of referencedenote corresponding parts throughout all the views of which Figure 1 is a front sectional elevation of an automobile engine,- the section being Fig. 4 is a semi-diagrammatic side elevation of the parts shown in Fig. 1 on a reduced scale.

Fig. 5 is a side view of portions of a dynamo, certain parts beingcut away along a central plane in order to show the construction more clearly.

Referring now to Fig. 4 of the drawings, there are indicated at 1 and 2 the cylinders of a -multiple-cylinder internal-combustion engine in which the crank shaft 3 isdriven by the cranks 4 and in turn drives a clutch 5 of any desired type. Forwardly from the engine, the crank shafthas secured thereon a spiralA gear or worm wheel 6 and another gear or worm 7 and thence passes through end wall 8 and the radiator, 9 being provided with a pulley 10 which drives by means of a belt 11 the propeller fan 12 discharging rearwardly toward the engine.

Meshing with gear 7, as indicated in gear 15 upon t e armature shaft 16 of a dyi namo 17, hereinafter described.v It may here be noted that by the term spiral gear is meant a gear in which the teeth are inclined with respect to its axis of rotation in a direction other than that of elements of a cone about the said axis. In other words, the teeth of such a gear, as the term is herein used, lle substantially in a cylindrical surface about its axis of rotation and yet are -mclmed 1n non-parallel relation to such axis. The form of spiral gearing herein shown is substantially that of a worm and wheel, the pitch of the threads or teeth preferably belng such that the gearing is reversible and either gear vmay be used to transmit power to and drive the other. f

Extending` about crank shaft 3 and the several gears above mentioned, is a casing 18 known as the crank-case containing heavy oil to such a depth as tosubstantially submerge the gearing. This casing is provided 'f with a relatively detachable upper portion 19 through which the shaft 16 and other parts pass, thus tending to hold them in alinement. It may be noted, moreover, that the casing is separable into other ortions in order to permit the ready assemb ing or removal of the parts, but it is believed unnecessary to show here the details of the various portions and means by which the are secured together. It may be note at this point, however; that the casing serves not only to aid in holding the parts in osition but maintains the gearing in well lu ricated and quiet runnin condition without the chance of oil wor ing into the 'vulnerable portions of the dynamo.

The teeth of the gear 6 are so curved in a direction arallel to the crank shaft, as is indicated in Fig. 3 of the drawings, that a slight endwise movement of the gear may be permitted without tending to bind theteeth of gear 15 meshing therewith. This is accomplished by making the radius of curvature of the teeth of gear 6 in a direction lengthwise of the crank shaft greater than the radius of curvature in that location of the teeth of gear 15. A material lateral movement of gear 6, however, is prevented by mounting it upon the s lined collar 20 which is secured to the cran shaft 3 in such manner as to permitan endwise movement of the latter without imparting a corresponding movement to the gear. The hubs of gear 6 arepreferably engaged by the bearing collars 21 which are `fast upon the casing 18 or other part of the engine frame. .In this manner the clutch 5 may be thrown in. and out with any desired degree of force without tending to cramp the above spiral gearing.

Referring now to Fig. 5 of the drawings, there is shown somewhat in detail the construction of dynamo 17.

The latter preferably takes the form of a machine adapted to act either as a motor or generator, although certain features of this invention may be embodied in apparatus in which either a motor or a generator be sparately used. The armature shaft 16 passes at the lower end. of the generator through a double thrust bearin 22 substantially opposite the casing portion 19. This bearing is formed by providing a collar 23 fast upon the shaft 16 and having raceways 24 and 25 for the balls 26 and 27. The mating raceway for the set of balls 27 is formed in a collar 28 and in like manner a collar or ring 29 provides an outer raceway for the balls 26. These'outer raceways are gri ed by a flanged ring 30and firmly held wit in the tubular extension 31 of the dynamo head. ring 32 threaded upon the shaft E16 aids ian holding the inner bearing'd'nember in position andthe outer bearing members are supportedby a ring 33, which isin turn held in position by a anged collar 34 threaded upon the dynamo head at 35. In this manner there is provided a bearing which not only permits free rotation of the shaft but is well adapted to resist a thrust in either an upward or downward direction, according as the dynamo is driving or bein driven from the engine.

he upper end of shaft 16 rests within a ball-bearing 86. The ample lubrication of this bearing without the chance of the oil running downwardly into thel armature or ossibly the commutator of the dynamo, is highly desirable and is accomplished by means of a flanged ring 37 which receives and delects from the shaft the oil dripping from the bearing immediately above the same. This oil so diverted asses into an annular passage 38 and is t ence drained away through a passage 39 to a point outside the dynamo casing. In this mannen the dynamo may be used in an upright position without the chance of injury and yet will be maintained in a well lubricated condition. It will also be seen that this arran ment not only rovides a compact disposition but permits t e gear 15 to be well lubricated without the necessity for providing a stuffing box or other tight connection at the point where the shaft passes through the caslie operation of the above described apparatus is substantially as follows:

Assuming that dynamo 17 takes the form of a motor generator and that it be desired to start the engine, the current is passed from a suitable storage battery to rotate the shaft 16. This action causes the turning over of the crank shaft with compression in the engine cylinders, and upon the engine starting, power is transmitted therefrom to the dynamo 17 which now runs as a enerator and charges the storage battery rom which it received current when acting as a motor. The dynamovl, being positioned in the path of discharge ofthe fan 12, is maintained in cool condition even though acting under heavy load and its double thrust bearing permits it either to drive or be driven without tendency to displace its shaft. It will also be noted that by the. disposition of the dynamo as above noted upon the o posite side of the crank shaft from t e cam shaft 14, each is balanced to a lar e extent by the other; a int of considerab e advantage in' light ve icles in which the crank shaft runs lengthwise substantially at the center of the vehicle.

It will thus be seen that there is pro- I vided ap aratus in which the several objects of t is invention are achieved.

As many changes might be made in the above construction, different embodiments might be made of this invention without departing from they scope thereof, it is intended that all feaand asmany apparently

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US5533825 *Nov 14, 1994Jul 9, 1996General Electric CompanyParabolically helical spline shaft coupling
U.S. Classification290/46, 74/458, 74/11
Cooperative ClassificationF02N11/04