US1254699A - Engine. - Google Patents

Description

UNITED sTATEs PATENT OFFICE.

EDWARD A. JOHNSTON, 0F CHICAGO, ILLINOIS, ASSIGNOR T0 INTERNATIONAL HARVESTER CORPORATION, A CORPORATION OF NEW JERSEY.

ENGINE.

. Specification of Letters Patent.

.Patented Jan. 29, 1918.

To alt whom it may concern: A

Be it known that I, EDWARD A. Jonrvs'ron, a citizen of thc United States, resldm at Chicago, in the county of Coolr'and tate of Illinois, have invented certain new and useful Improvements in Engines, of which the following is a full, clear, and exact specification.

This invention relates to engines, and more particularly to auxiliary engines for starting larger ones.

The main object of the invention is to con trol automatically the starting power developed by and transmitted from the startingkengine to the larger engine to be started.

-nother object is to change the automatic control to manual control, and vice versa, at Wili. A

These objects are accomplished by providing a starting engine with means for controlling the supply of actuating fluid there to, means for automatically controlin the action of said first means, and means w erebythe automatic control can be changed to manuall control7 and vice' versa. The invenof drawings in whichiFigurel 1sv a-side elevation of a. starting engine embod ing my invention and showingl the'iy W eel of a larger engine to be started thereby.;

Fig. 2 is a detail sectional view taken along the line 2-2' of Fig. 1; and

Fig. 3 is a fragmentary view of thevuel mixture intake pipe leading to the inlet l vul-ve of the engine and showing the general arrangement and control parts of the mixture 'throttling valve.

The various novel features of my invention will be apparent from the following description and drawings, and will be par-4 ticula rly s et forth' in the appended claims.

It is a well-known fact that it is a difficult matter 'to` manually' start gas engines of large capacity, it 'being necessary that engines of certain capamty above a certain minimum be started 'by-means of a small auxiliary' starting unit. To illustrate my inventioml'have show-n' the iiy wheel 10 of a relatively large eng-ine to be started, which flywheel 'is engaged under starting conditions by'v rotating -frictional element 11 of the auxirl ry'stiirtmg engine 12. As Shown,

.this auxiliary starting engine takes the form of anriternal cru rthrustionl engine having e tionis' illustrated on the accompanying sheetby a smaller gear 18 mounted upon and secured to the crank shaft 19 of the starting engine. The gear 17, with its sleeve 16, ro-

tates upon a stationary shaft 20, from which it is separated by suitable Babbitt metal 21, said Shaft being retained in supporting portions of the engine housing. Mounted upon one portion of the sleeve 16 is a spider frame 22, 1n which is secured the rotating frio tional element 11 and which has projections 23 which interlock with projections 24 of the sleeve 16 by means ot which a rotating movement is transmitted from the gear 17 to the rotating frictional element 11.

The auxiliary starting engine 12 as a whole is pivotally mounted at 25 upon a suitable base 26 which', if desired, may be the base of the main engine to be started. The auxiliary engine 12 may be actuated in a. mannen suchethat therrotatingfrictional element 11 thereof may approach and recede from the iy whecli of the engine to be started by means of a hand operatedlever 27 pivotally mounted at 28 on .an ear 29 on the base 26, said lever having a pivotal connection with.an adjustable link 30, one end of which is connected at 31 to a suitable ear formed on the case of the auxiliary ene gine 12. As shown in Fig, `1, the frictional rotating element 11 is out of engagement.'

'rotated in a reverse manner about its piv- 'otal point 25, causing the disengagement of the rotating. element; 11 and flywheel 1 0.

Located within'V the' fuel-conducting pi e 14 which leads to' thercylinderl of tile loo valve 35 mounted uponv a pin 36, to one end of'which is secured an operating handle 37 Vhaving an earBS, to which is secured a link- 39, one end of which is connected to one end of a relatively stiff spring 40, the other end of which spring 4041s connected to an adjustable stud 411 mounted in the base 26. Normally the mixture throttling valve 35 is pressed 1n one of its extreme positions by a properly arranged spring 42, one end .of which engages a projection i3 of the handle 37 which projection engages an adjustable stop la which limits the closing move ment 'of the mixture thrcttling valve when it is in one of its normal extreme positions, j

When the auxiliary engine is in operation the liquid fuel is drawn from a'ny suitable source 45, by the suction of the engine, through aA fuel port 46, which is controlled by `a puppet valve 47, which puppet valve also controls the air supply through conduit 48. The mixture, liquid fuel and air, passes up through the pipe i4 and the quantity thereof is controlled by the mixture throttling valve 35; that is to say, as the mixture thrcttling valve 35 is opened more and more, a greater quantity of fuel is permitted to pass thev same and into the engine, the explosion of which greater quantity increases the power developed by the auxiliary starting engine. It is of importance that a relatively great power be developed by the auxiliary starting engine when the rotating frictional element l1 engages the Hy wheel 10 of the engine to be started. i To accomplish this result the connection including the rod 39, spring 40, and stud 41 is provided whereby, when the rotatable friction element 1l is pressed toward the liy wheel 10, by raising the lever 27, the mixture throttling valve 35 is automatically opened a greater amount, thereby permitting a greater quantity of fuel to pass into the engine for developing the increased amount of wer which is developed in and transmitted rom the auxiliary starting engine to the fly wheel ofthe engine to be started. The uantity of fuel mixture pass-.-

ing the mixture throttling valve 35 may also 4be controlled 'manually by actuating the handle 37 regardless ofthe automatic actuation of the mixture throttling valve to vary the quantity of mixture supply to the engine. Let it be assumed that the rotating` frictional element `.l1 is in engagement :with the ily wheel 10 and the mixture throttling valve is opened a certain amount to permit a certain quantity of mixture tobe supplied to the starting engine. 4With these conditions existing, if a reater quantity of fuel mixture is desired, t e same'is made possible by rotating the mixture throttling valve 35 in the same direction an added 4amount by properly moving the handle 37. In like manner the quantity of mixture passing the mixture throttlmg valve 35 may be def nauwe land it is my intention to cover all such modii direction. lt is seen, therefore, that as the auxiliary starting engine-is moved toward the. engine to be started the developed power of the auxiliary engine is automatically in creased, and as said auxiliary engine is moved from the large engine to be started the developed power is decreased; also that the automatic control can be changed into manual control, and the manual control into automatic control at will.

It isl evident that there may be various modifications of the invention other than that here particularly shown and described,

ications which do not depart from .the spirit' and scope of my invention as set forth in the following claims.

What I claim as new is:

l. 'In combination, an engine to be started, a pivotally mounted auxiliary starting en- Eine movable toward and from the engme to e started, and means by which the power of the starting en ine is automatically increased as it is swung edil-y about its pivot toward the engine to be started.

2. In combination', an engine to be started, a pivotally mounted'auxiliary starting engine movable toward and from the engine to be started, and means by which the power of the starting engine is automatically de creased as it is swung bodily about its pivot from the engine to be started. y

'3. An internal combustion engine' used for starting purposes and adapted to be moved, said engine having a valve to control the passage of a combustible fuel, and automatic means for varying the opening of said valve to permit a varied quantity of combustible fuel to pass as'the engine is moved bodily.

4'. An internal combustion engine used for starting purposes and adapted to be moved, said engine having a cylinder, a Asource of combustible fuel supply, a valve for controlling the supply of combustible fuelfrom said source to the cylinder, and means whereby said valve is opened automatically as the engine is moved bodily in one direc; tion and moved toward closed position when 115 'the engine is movedbodily in another di` rection. l

5'. In combination, an engine to be started, a controlled auxiliary starting engine, l the developed power of which isfautomati- 120 cally varied as the distance between said engines is varied, and means for changing the control from automatic to manual.

6. In combination, a base, an engine pivotally mounted thereon, andmeans by which 125 the power of the engine is automatically l Qtally moimted thereon and lumng n mix no ture throttling valve, means for swinging said engine about its pivotal point, an

means for automatically opening and closing said valve as said engine is moved about its pivotal point,

8. In combination, a tese, an engine piv- 'otally mounted thereon and having a mixture throttiing valve, a yieidable connection between said throttiing valve and said base,

and means for swinging said engine about 10 its pivotal point whereupon sald throttlmg valve is opened at the same time.

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