US1548818A

US1548818A - Engine-starting apparatus

Info

Publication number: US1548818A
Application number: US788416A
Authority: US
Inventors: Bijur Joseph
Original assignee: Eclipse Machine Co
Current assignee: Eclipse Machine Co
Priority date: 1913-09-06
Filing date: 1913-09-06
Publication date: 1925-08-11
Anticipated expiration: 1942-08-11

Description

J. BlJUR ENGINE START ING APPARATUS Original Filed Sept. 6, 1915 WITNESSES a. \q Q 5% Patented Aug. 11, 1925.

UNITED STATES PAT OSEPH BIJUR, OF NEW YORK, N. Y., ASSIGNOR, 'BY MESNE ASSIGNMENTS, TO ECLIPSE EN'I" or-r ce.

MACHINE COMPANY, OF ELMIBA HEIGHTS, NEW YORK, A CORPORATION OF NEW YORK.

ENGINE-STARTING APPARATUS. j

Application filed September s,- 1913, Serial N... 788,416. RenewedJanuar'y 10, 1925.

T0 all uihom it may concern:

Be it known that I, JosEPH BIJUR, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Engine Starting Apparatus, of whichthe following is a full, clear, and exact description, such as will enable others skilled in'the art to which it appertains'to make and use the same.

v This invention relatesto means for meshing gears, and with regard to certain-features' thereof, more specifically to 'engine starting apparatus. One of the objects of this invention is to provide practical and efficient means for insuring the proper meshing of gears. starting apparatus for internal combustion engines which shall be simple, durable and inexpensive in construction and reliable in action. Other objects are to provide in apparatus of this type means whereby the wear is equalized and the chances of injury to the parts reduced to a minimum. Other objects will be in part obvious and in part pointed out'hereinafter.

The invention accordingly consists in the features of construction, combinations of elements and arrangement of parts which will be exemplified in the construction hereinafter set forth, and the scope of the application of which will be indicated in the following claims.

In the accompanying drawing,'in which is shown one of various possible embodiments of this invention, Figure 1 is a. diagrammatic elevation showing the parts in inoperative condition;

Fig. 2 is a sectional end View on a largerv scale taken substantially on the line aa of Fig. 1;

Fig. 3 is a vertical sectiontaken along the line bb of Fig. 2; Fig. 4 is a similar view showing the same parts at a slightly different stage of their operation; I

Fig.5 is a diagrammatic end view of a gear tooth with a part acting thereon; and Fig. 6 is a similar view of like parts at another stageiint heir action.

Another object is to provide- Similar reference characters refer to simthere is shown a series motor 1, suitably con nected with a source of current 2, the connection being controlled by the switch or cut-out 3. The shaft 4. of this motor is extended and provided with a heavy thread upon which is positioned a pinion 5. The

latter member either fits these threads or is provided witha projection entering the same whereby relative rotary movement of these parts will cause a longitudinal motion of the pinion. -Pinion or gear-5 has affixed thereto a depending weight 6 and preferably one or more air-vanes 7.

It will thus be seenthat'as the motor 1 is v started the weight "6 and air-vanes 7, or either of them, tend to retard the rotation of pinion 5 and it is driven toward the free end of the shaft 4, resting against a suitable stop-nut 8.

Mounted adjacent pinion 5 is the fly-wheel 9, preferably of an internal combustion en-' glue, andprovided upon its outer surface with gear teeth 10 of such pitch and axial disposition as to mesh with the teeth of gear 5 .upon the latter moving. longitudinally along shaft 4. The teeth of gear 5 as well as the teeth 10 not only have the ordinary convergence of their surfaces in outward radial directions, but the surfaces converge longitudinally at their ends, as indicated in Figs. 1, 5 and 6; Moreover, the teeth are rounded, as indicated at 11 in Fig. 3.

Secured to the outer end of gear 5, as by means of the screws12, is a resilient annular-member 13 of outwardly concave con-' formation provided with a plurality of spring teeth 14 substantially registering with the teeth of gear 5. Each of these teeth has an end portion sharplybent to ward the ends of teeth 10, as indicated at 15, and provided with an inclined edge or surface 16, as best shown in Fig.5 of the drawing. One of the functions of the latter device is as follows If, upon the gear 5. moving toward meshing position, .its teeth are in substantial registry with teeth 10,

then the inclined part 16 of the uppermost.

arm or arms 14 will engage the endwardly tapering edges of teeth 10 and will tend to rotate gear 5 to such position as to bring the teeth of the gears out of alignment one with the other. It is to be understood that due to the resiliency of the member 13 the above pressure is yieldingly applied, thus tending to prevent injury to the parts, and, if the rotary tendency is insu'llieient, the spring arm or arms will be so compressed as to ride beneath the teeth 10 and press upwardly with considerable force against their points, this action being indicated in fulllines in Fig. 5, whereas the end engagement is shown in Fig. 6. The above engage ment of the teeth 10 by this spring member, either at their ends or upwardly at their points with greater force, will insure the swinging of the teeth of gear 5 into proper alignment and the proper meshing of the gears. It is to be particularly noted, moreover, that the inclination of the edge portion 16 is of such direction that its tendency to swing gear 5 is aided rather than impeded by the friction due to the rotary motion of the shaft 4:. It will be seen from a con sideration of Fig. 1 of the drawing that the motion of this shaft, in order to throw pinion 5 into meshing position, would be left handed as viewed from the motor end. This is indicated by the arrow in Fig. 2, and the inclined spring teeth shown in dotted lines in this figure will tend to swing the gear in the same direction.

The operation of this apparatus is substantially as follows :-Assuming the parts in the inoperative condition shown in Fig. 1, the switch 3 is closed whereupon the motor immediately starts. The pinion 5 has a tendency to hold its position against angular rotation by reason of the depending weight 6, but even if it should spin with the shaft due to the use of a light weight or unclean thread, the air-vanes 7 will so retard its rotation as to cause it to advance teeth 10, as above described, and insures proper meshing of the gears. As the pinion 5 comes to the end of its outward travel it assumes a state of rotation equal to the rate of drive of shaft 4 and correspondingly drives the fly-wheel 9 through a suitable speed reducing ratio. The engine connected with fiy-wheel 9 is thus turned over and its charge is compressed to start its regular action. As the latter takes place the speed ratio of the flywheel gear to gear 5 is such that the latter is driven upon shaft 4 at a greater rate of speed than that of the motor armature, and hence the pinion is forced bymeans of its threaded connection laterally out of mesh with teeth 10. It will be understood that the toothed face of fly-wheel 9 is preferably sufliciently wide to receive not only the teeth of gear 5, but the spring arms 14 in meshing relation. The starting operation is now complete, and it is to be noted that if the cut-out is inadvertently held closed when the engine has started or is closed while the engine is running, the pinion 5 will advance only until the spring teeth 14: engage the rapidly traveling teeth 10, and their inclination is such that they tend to yield and also tend to force the pinion 5 away from intermeshing position. Moreover, by this yielding engagement of the spring arms with the teeth 10. the linear velocity of which is extremely high, the pinion 5 is quickly bumped into a rotation equal to the armature shaft, preventing further advance, and then to an angular speed greater than the armature shaft, which will cause the pinion to recede.

It will'thus be seen that there is provided apparatus in which the several objects .of this invention are achieved and in which many features are presented which are of material advantage in practical use.

As many changes could be made in the above construction and many apparently widely dili'ercnt embodiments of this invention could be made without departing from the scope thereof, it is intended that all matter contained in the above description or shown in the accompanying drawing shall be interpreted as illustrative and not in a limiting sense.

Having described my invention, what I claim as new and desire to secure by Letters Patent is:

1. In apparatus of the class described, in combination, a pair of gears, means adapted to move the toothed portions of said gears longitudinally toward meshing position, and a resilient member mounted upon one of said gears and provided with an inclined portion adapted to engage the teeth of the other gear and steer the gears into meshing relation.

2. In apparatus of the class described, in combination, a pair of gears, means adapted to move the toothed portion of one of said gears longitudinally toward meshing position with the other of said gears. and a resilient member mounted upon said longitudinally movable gear and provided with an inclined portion adapted to engage the teeth of the other gear and steer the gears into meshing relation.

3. Tn apparatus of the class described, in combination, a pair of gears, means adapted with respect to said shaft, a second gear positioned to mesh with said first gear as the latter travels along said shaft, and an.

, annular spring member secured to said first gear and of outwardly concave conformation terminating in a plurality of teeth registering with the teeth of said first gear and each .of which is-provided with asharply bent end having an inclined edge adapted I to engage the teeth of said second gear.

5. I i-"apparatus of the class described, in combination, a source of power, a shaft driven from said source of-power, a gear threaded'upon said shaft, a second gear positioned to receive said first gear in mesh I as it follows the threads of said shaft, and

resilient means preceding said first gear as it approaches meshing position adapted to expose an inclined surface to the teeth of the rotation of said said second gear and accelerate the angular speed of said first gear by its contact with said teeth.

6. In apparatusof the class described, in a gear, a source of shaft and positioned to mesh with said first gear as it moves along said shaft, and means adapted by resistance to the air to retard second gear with respect to'said shaft.

7. In apparatus of the class described, in combination, a source of power, a gear, a threaded shaft driven from some source of ower a second ear threadedu on said shaft and positioned to mesh with said first gear as it moves along said shaft, and an air-vane operatively related to saidgea'rand adapted by the resistance of thegtir to tend to retard the rotation of said second gear with respect to said shaft.

8. In' apparatus of the class described, in combination, a pair of gears one of which is adapted to be moved axially into mesh with the other, and means operated as an incident to the alinement of'the teeth of the two gears to partially rotate one of the gears to cause meshing register. with respect to the teeth of such gears before they reach meshing position.

9. In apparatus of the class described,in' combination, a pair of gears one of which is adapted to be moved axially into,mesh

is stationary'with respect to axial movement andthe other of which is movable axially into mesh with such stationary gear,

and means adapted to partially rotate such movable gear to cause meshing register with respect to the teeth of the two gears before they reach meshing position. I 11. In apparatus of the class described, in combination, a pair of gears one of which is stationary with respect to axial movement and the other of which is movable axially into mesh with such stationary gear, and means carried by such movable gear and adapted to partially rotate it to cause meshing register with respect to the teeth of the two position.

12. In apparatus of the class described, in combination, a pair of gears, means adapted to move one of the gears longitudinally towards meshing position withthe other of said gears, and means carriedby gears before they reach meshing,

said longitudinally movable gear andexadapted to move one of the gears longitu- 'dinally towards meshing position with the other of said gears, and a shell carried by said longitudinally movable gear and projecting beyond the face thereof, the outer edge of such shell being toothed to engage and cooperate with the teeth of the other gear to cause partial rotation of the longitudinally movable gear when the teeth of. the two gears are in alinement.

14. In apparatus of the class described, in combination, a pair of gears adapted to mesh with each other, one of the gears being axially movable for meshing with the other gear, and means separate and independent of the teeth of the axially movable gear and adapted to cooperate with the teeth of the other gear to cause meshing register between the teeth of the two gears.

15. In apparatus of the class described, in combination, a driving shaft,.a pair of gears adapted to mesh with each other, one of which gears is stationary with respect to axial movement and the other of which as an incident to the alinement of the teeth of the two gears to partially rotate such axially movable gear to cause meshing register with respect to the teeth of such gears before they reach meshing position.

16. In apparatus of the class described, in combination, a screw threaded rotatable driving shaft, a pair of gears adapted to mesh with each other, one of which gears.

is stationary with respect to axial movement and the other of which is threaded on said shaft for axial movement longitudinally thereon and for rotary movement thereof, and means operated as an incident to the, alinement of the teeth of the two gears to cause meshing register with respect to the teeth of such gears before they reach meshing position.

In testimony whereof I afiix my signature, in the presence of two witnesses.

JOSEPH BIJUR. Vitnesses:

R. S. BLAIR, C. J. KULBERG.