US943726A - Regulator for internal-combustion engines. - Google Patents

Description

M. J. WOHL & H. HERTZBERG. REGULATOR FOR INTERNAL COMBUSTION ENGINES.

APPLICATION FILED MAR. 4, 1908.

Patented Dec. 21, 1909.

Ill

TiniTnn STATES PATENT Trio.

MAURICE J. WOI-IL AND HARRY HERTZBERG, OF NEW YORK, N. Y.. ASSIGNOIRS TO ABBOT A. LOW, 01* HORSESHOE, NEW YORK.

REGULATOR FOR INTERNAL-COMBUSTION ENGINES.

To all whom it may concern:

Be it known thatwe, MAURICE J VVoHL and HARRY HERTZBE G, citizens of the United States, and residents, respectively, of the city of New York, borough of Manhattan, county and State of New York, and of the city of New York, borough of Brooklyn, county of Kings, and State of New York, have invented certain new and useful Improvements in Regulators for Internal-Gombustion Engines, of which :the following is a specification;

The object of this invention is to provide, I

l motor 10 in one d1rect1on;-whereas, when means for maint'aining'the speed of a gasengine constant, through the expansion and contraction of ane ctrical conductor, the

current through winch is varied by varia-- tions in the speed of the engine.

A further objectis, in connection with;

such an arrangement, to provide means for;

varying the speed of the engine from *onej constant speed to another,

Broadly, the invention consists in the combination, with a gas engine,.of aJcircuit in-- eluding a conductor adapted to expand by reason of the heat generated by a current passing therethrough, connection betweensaid conductor and the'inlet' valveof-"the' engine, whereby theexpansion and contrao tion of said conductor varies'the'degree of opening of the valve, and means whereby the speed of the engine varies the current in said circuit.

In the accompanying drawings is fur-i -ni'shed an illustration of one way in which the invention may be carried into effect;

In these drawings, Figure 1 is a semi;

diagrammatic view of'the whole arrangement, and Fig. 2 is a-detail in section.

Referring to these drawings, the numeral.

1 indicates an engine of the internal oom-.

bustion type, and 2 its inlet valve. This valve is opened and closed in a customary manner, through the rocker'arm 3, actuated by the'cam-operated rod 4.

5 is the pivot. 'for the rocker arm 3; and is itself pivoted on thefeccentric stub. journals 6, which are conveniently received in journal lugs 7 A worm gear segment 8 may be fixed rto one of these stub journalsi-and the gear may be actuated by a worm 9, driven by a motor-10. I

11 indicates a dynamo, which mayg-ibe belted or otherwiseconnected directly the engine. This dynamo drives the:-mot0r--=19';*-'

specification of Letters Patent. t t Deg 21 19 9;

Application filed March 4, 1908.

Serial No. 419,107.

12 being the conductors leading thereto. Means is provided for reversing the motor; this means being preferably in the nature of a reversing switch 13, for reversing the direction of the current in the armature of the motor. The switch is pivoted at 1 1, and may be partially of insulating-material, as at 19', where are mounted the contact members 15. A spring 16 may be provided, for slightly more than overcoming the force of gravity, As will be readily seen, when the contact members 15 rest on the contacts 17, the current passes through thearmature of the contact members 15 rest on thelcontacts 18, the direction of current in this armature is reversed. The, consequence, of course, .is that the gear 8 is turned in one direction or the other; and this, in turn, raises or lowers 'the pivot 5, so that the degree of opening ,offthe valve 2 is varied. Normally the contact members 15 rest neither on the contact 17 nor 18: when this is the case, the pivot 5 is not 'afiected.

The switch 13 is operated by a conductor 20, "included in a shunt from the-main dy- -namo circuit.- This conductor orwire has sufiicient resistance to be heated by the current' passing through it; and may be in two sections, 21 and 22, which are secured to the switch 13at opposite sides'of its pivot, so that contraction of the wires turns the switch against thetension of the-spring16. When the'wires expand,- the switch is turned in the opposite direction by saidspring.

It is important to provide means whereby the expansion andcaantraction ofthe'cons ductor 20 caused by the temperature ofthe air shall not affect the switch. This may be effected by securing the remote ends of conductor sections 21 and 22 to spring sup-V ports :43, and connecting these supports by a compensating wire 24, which is equally ,afiected as to expansion and contraction by. the temperature of the air as is the conductor 20. It be seen, that a fall in temperature of the surrounding air, causing equal contraction-iii conductor 20. and'wiie 24, results in the xvii-e24 drawing the supports 23 slightly towardeachother. As't amount of inward'movementjnf these su ports is exactly theaamount of contraction of thefcondnctor 20,- as'well asof the wire 24, itialliows that. the T'conduetor Sections-21 and ififi' xert no pull on thesWi'tch, Conversely,

creased or diminished according .tlOIl of rotation of the motor, a reversing 2. In combination expansion both of conductorQO and wire 24, permits the spring supports 23 to separate slightly, taking up the slack in the conductor sections 21 and 22, without permitting the spring 16 to turn the switch.

It will be understood, of course, that the arrangement is such that the expansion of conductor 20, due to a greater output of current from the dynamo, due in turn to increased speed in the engine, results,:t'hrough the instrumentalities described, in reducing the degree of opening of 'the .inlet valve, with consequent reduction of engine speed. Reduced speed in the engine results, conversely, in a greater opening of the inlet valve, so'that the engine speed is brought back to the desired constant.

In order to vary the speed of the engine at will, we have shown a variable resistance R in the shunt with the conductor 20 It will be understood that the construc-v tions and arrangements which we have shown are merely illustrative, and that thecmbodiment of the underlying invention, as stated at the outset, may be widely varied.

What we claim as new is:

1. In combination with a gas engine, means for regulating the speed thereof, comprising a circuit including a conductor adapted to expand by reason of the heat generated by a current-passing therethrough, connection between said conductor and the inletvalve of the engine whereby the expansion and contraction of said conductor varies the degree of opening of the valve, means whereby the speed of the engine varies the current in said circuit, and means for varying the current in said circuit at will. i

with a gas engine. means for regulating the speed thereof, comprising a dynamo driven by the engine, a motor adapted to be supplied with current fromsaid dynamo, connection between. said motor and the inlet valve of the engine whereby the degree of opening thereof is into the direcswitch for the motor, and a conductor in shunt from the dynamo circuit adapted to expand by reason of the heat generated by current passing therethrough, said conductor being connected to the reversing switch to operate the same through its expansion and contraction.

3. In combination with'a gas engine hav ing its inlet valve operated by a rocker-arm, means for regulating the speed of the engine, comprising an 'eccentrically journaled pivot for said rocker-arm, a motor connected with said pivot to turn the latter, a reversing witch tor-the motor, a circuit including a conductor adapted to expand by reasonot speed of the engine.

- means for regulating thesp said gear,

principles .of tlie prising heat generated by current passing therethrough, said conductor being connected with the reversing. switch to operate the same, and means'whereby the current in this conductor circuit is varied according to the 4. In combination with a gas engine having its inlet valve operated by a rocker-arm,

eed of the engine, comprising an eccentrlcall'y journaled pivot for said rocker-arm, a wormv gear vconnected to said-pivot, a worm meshing: with a motdr for driving the worm, a reversing 'switch for the motor, a circuit including a conductor adapted to expand by reason of heat generated by a current passing therethrough, said conductor being ;connected with the reversing switch to operate the same, and means whereby the current in this conductor circuit is varied according to the speed of-the engine. 7

5.,In combination with a I gas engine, means for re nplat-ing the speed thereof, comprising a' iiibtor, connected with the inletvalve of the engine to vary the degree of opening thereof, a reversing switch for said motor, a circuit .including a conductor adapted to expand by reason of the heat generated by current passing therethrough, connection between said circuit and the engine whereby variations in speed of the latter varies the current in the circuit, spring supports to which the ends of said conductor are secured, the conductor being connected intermediately to the reversing switch to operate the latter through expansion and contraction, and a compensat ng wireconnecting said spring supports, being adapted to be affected equally with the conductor by atmospheric temperature.

6. In combination with "a as engine, means for regulating the a motor, connection between sa d motor and the inlet valve of the engine whereby the degree of opening of the latter is increased or diminished by the operation of the motor'fa reversing switch 'for the mpj tor, a. circ t includinga conductor adapted to cxpandyby reason, of theiheatgenerated by current passing therethrough, sa d conductor being connected with the reversing switch to operate the same, meanswhereby the current in thisconductor circuit is varied according to the speed ftheengme, and a variable resistance in circuit with said conductor.

Signed at Brooklyn, New York city, in the-county of Kings and State of New York this 29th day of Feb. 1908.

. MAURICE J. WOHL.

HARRY HERTZBERG.

Witnesses: 1

LEWIS W. HASKINS, 'JoHN FLATHMANN.

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