US1117378A - Combined generating and starting apparatus for gas-engines. - Google Patents

Description

J. A. HEANY.

COMBINED GENERATING AND STARTING APPARATUS FOR GAS ENGINES.

WITNESSES APPLICATION FILED JULY 28, 1910.

Patented Nov. 17, 1914 3 SHEETS-SHEET l.

HVVE/VTOR John A/[en Heuny.

' ATTORNEY J. A. HEANY. COMBINED GENERATING AND STARTING APPARATUS FOR GAS ENGINES.

APPLICATION FILED JULY 28, 1910.

UIIIIIIIIIIIIII/I/IIA lNl/E/VTUR John Allen He WITNESSES.

any.

2 ATTORNEY J. A. HEANY.

COMBINED GENERATING AND STARTING APPARATUS FOR GAS ENGINES.

APPLICATION FILED JULY 28, 1910.

1,117,378, Patented Nov. 17, 1914.

B SHEETSSHEET 3.

WIT/M8858.- IIVI/E/VTUR V [01:12 Allen Heany.

? BY T M%%W JOHN ALLEN HEANY, OF FLINT, MICHIGAN, ASSIGNOR, BY

MESNE ASSIGNMENTS, T

' A. E. L. LECKIE, OF WASHINGTON, DISTRICT OF CUIQUMBIA.

COMBINED GENERATING AND STARTING- APPARATUS FOR. GAS-ENGINES.

-Specification of Letters Patent. P t t 7 1914 Application filed July as, 1910. Serial No. 574,215.

To all whom it may concern Be it known that I, JOHN ALLEN HEANY,

' a citizen of the United States, and a resident of Flint, in the county of Genesee and State of Michigan, have invented certain new and useful Improvements in Combined Generating and Starting Apparatus for Gas-Engines, of which the following is a full, clear, and exact description, whereby any one skilled in the art may make and use the same.

J The invention relates to ignitionand lighting systems to be used in connection with prime-movers such as internal combustion engines and more particularly to a simple and compact arrangement of parts which will provide for ignition and other load circuits and in addition thereto may be utilized for giving an initial movement for starting the main prime-mover. More specifically, it relates to a device similar to that set forth in my former Patent No. 979,003, dated Dec. 20, 1910, although it has additional features of advantage in that' through a series of clutches and driving devices a maximum torque may be secured for starting'the isolated unit and through the I combined clutches, this starting movement may be utilized in conjunction with the movement of the unit to give a very much increased driving eflect upon the shaft of the engine to be started. A series of effects v may be secured, in the driving and driven actions of the dynamo-electric machine and the unit connected therewith, through the combination. of clutch devices and driving devices hereinafter described.

The objects of the invention are to provide a complete unit, which may be operated entirely independently of the main engine or other device, to'which the ignition and load circuits are an appurtenanceand which will serveas a powerful driver for starting the main prime mover.

A further object is to utilize unit-parts (that is, the isolated prime-mover and dynamo electric machine) of very small design which will occupy practically no more space than the ordinary magneto commonly used in connection with internal combustion engines and yet will be effective for lighting purposes, ignition and load circuits and for starting the comparatively large main prime mover or engine.

A still further object is to combine the iso- 'and may still be used as the driving connections between one or both of said parts and the 'main shaft of the engine to be started.

Referring to the drawings: Figure 1 is a horizontal sectional view through the casmg containing the driving and clutch parts and dynamo electric machine, the prime mover being shown in plan. Fig. 2 is a view in side elevation looking from the upper side of Fig. 1. Fig. 3 is a detail view of the planetary gear arrangement illustrated in Fig. 1. Fig. 4 is a perspective view of the operating shafts for the clutches. Fig. 5 is a diagrammatic view illustrating the various parts of the mechanism and one form of electrical connections.

'In carrying out the present invention which 1s somewhat analogous to the invention of the co-pending application hereinbefore referred to, provision has been made for utilizing the dynamo electric machine more space than the ordinary magneto. With "such an arrangement, a very small dynamoelectric machine may be used which will have, through the driving mechanism, a sufficient driving effect to initially start the prime-mover and said prime-mover may therefore be made of a convenient size to act 100 either alone or in conjunction with the dynamo electric machine for starting the main prime-mover or engine, in as much as the drive takes place through gears which give a maximum efiect.

It is also possible to 105,

actuate the dynamo electric machine from the prime-mover of the unit or from the main prime-mover.

From the above it is apparent that various combinations of drive may be secured 'in a no single unit and as hereinafter described .any 4 of the desired effects may be secured through a single controlling apparatus.

Referring to'the drawings the numeral 1,

denotes the armature of the dynamo electric machine having a commutator 24, suitable brushes 20, and fields 21, mounted within a V substantially tubular casing 23, which provides proper bearings for a shaft 11.

The armature and appurtenant moving parts are mounted on a sleeve 25, which-sur rcunds the main shaft 11, that ,is connected with and is an extension of the crank shaft.

of the prime-mover 12, the cylinder of which is. indicated at 26.- Secured to the sleeve 25,

V at one end is a male clutch-part 2, which may be engaged an'd disengaged through a lever'18, with the female clutch-part 3, that is provided with an extended sleeve 3*. The opposite end of the sleeve 25, has keyed to it a female clutch-part 13, which may be engaged and disengaged by a male clutch-part 14, through a suitable lever 19. The male clutch-part 14, is keyed to slide upon the shaft 11, while the male clutch-part 2, is

similarly arranged upon the sleeve 25.

At the extreme endof the shaft 11, and axially movable thereon is a male'clutchpart 10, controlled by a suitable leverl7,

for engagement and disengagementwith the female clutch-part 9. This latter member is integrally formed or properly connected with an internal. gear 8, which' has on its exterior a band-brake 15, controlled by a suitable lever 15*. Axially arranged with reference to the gear 8, is a similarly formed gear 7 ,which is loosely mounted upon the sleeve 3*. Within both of the gears 7, and 8, there is arranged a spider 5, which bears a pinion 6, that meshes with the teeth of both the internal gears. .This spider is keyed to the sleeve 3 ,;througha key 4.. The

gear 7, has properly formed on its exterior side gear-teeth 7, with which meshes a gear l6, which is properly arranged through intermediates to-drive'the main engine 16*.

' junction with the pinion 6.

' The internal gears 7, and 8,

number of teeth. As designed'herein, there is a difi'erence of one tooth in favor of gear 7 so that there will be a planetaryreduction action in the operation of said gears in conthere is shown. 1n Fig. 2,

have a different it is understood that the gear 7, in this instance, is held against movement, being connected with the shaft of the main primemover. To start the main prime-mover after starting the unit prime-mover 12, and

utilizing the force of the rotating armature when the clutch- parts 13, 14, are engaged, the clutch-parts 2, and 3, are left in engagement, the band-brake 15, is engaged with the gear 8', and the clutch-parts 9, and 10, are opened. Assuming the unit prime mover 12 to be in operation in order to start the main prime mover using only the unit prime mover 12, the clutches 13, 14, 2 and 3 are engaged and the drive will be transmitted through 3, 4, 5, and 6, to 7 and 8. The brake 15 is now applied and will prevent 8 from revolving. VVhereupon the gear 7 will receive motion and transmit same to the engine shaft through the gear 16 and appur tenant parts. To operate the dynamo electric machine from the unit prime-mover 12,

the clutch- parts 13, 14, are closed, whilethe clutch- parts 2, and 3, and 9, and 10, with the band-brake 15, are released. This gives a direct drive between the'prime-mover 12, and dynamo electric machine for furnishing ignition, lighting and storage current. If, for any reason, the unit prime-mover 12, is not available for running the dynamo electric machine, it is possible to drive the armaturedirectly from the main engine after it has been started. This is efiected by closing the clutch- parts 13, 14, 2, 3, 9, and 10, and opening the band-brake. M

From the above, it is apparent that almost any desired combination of driving efiects may be secured and the same reduction gears may be employed in the various combinations. I

'. "As illustrating a means for controlling the various clutches, a rotary and axially movable rod 30, provided with a the position of series of keys so-spaced that any of the several levers 31, '32, 33, 34, may be en gaged and turned to rock the respective shafts 35, 36, bell-crank-lever 37, and shaft 38, these parts being respectively connected with the lever- arms 19, 18, band-brake 15, and lever-arm 17 Obviously, any desired arrangement might be utilized for operating the several levers to secure the proper clutch connections herein described as being of simple form. By shifting the shaft 30, axially, it may be positioned to pick up and engage the several levers for giving any desired combination. By then partially rotating the shaft, the desired clutching and releasing actions will be effected.

' In the diagrammatic view illustrated in Fig. 5, the. unit is illustrated in conjunction with a storage battery A, a switch device B, which controls the circuit of the dynamo electric machine with reference to the storage battery and the load or lamp circuit C, and ignition circuit D.

Any desired form of ignition may, of course, be used and as illustrated herein, there is a simple form of jump-spark.

In practice, it is preferable touse a dynamo electric machine having a shunt-field winding in conjunction with a series field winding, thus providing a field excitation of opposed character to that of the shunt winding and one which is always less than the latter.

With such a machine, as the armature speed increases and the electro-motive force increases, the armature and series winding will vary, thus increasing the field excitation through the series coil which is opposed to the shunt fieldwindings and consequent excitation. The resultant field will be reduced since the electro-motive force of the generator is substantially proportional to the product of the armature speed and field strength any increase in speed tending to increase the electro-motive force will produce a decreased field strength, thus maintaining a substantially constant electro-motive force- The machine will operate as a a differentially wound generator and as a compound wound motor. Thus a maximum starting torque may be secured when running as a motor andia substantially constant electro-motive force will be secured even though the armature be driven from and control by which it is possible to utilize comparatively small parts with maximum driving effects with reference to each other.

What I claim as my invention and desire to secure by Letters Patent is: I

In combination, a main engine, a smaller auxiliary engine, an electric plant including a motor dynamo and a storage battery and suitable circuits, means whereby the auxiliary engine may drive the motor dynamo direct for generation of current, means whereby the motor dynamo may driie the auxiliary engine indirectly, and means whereby the auxiliary engine after it is started by the motor dynamo may drive the main engine, for the purposes set forth.

JOHN ALLEN HEANY.

lVitnesses PAULINE ROBERTS,

M. Bone.

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