US1188501A - Controlling mechanism for internal-combustion engines. - Google Patents

Description

- R. s, SMITH. CONTROLLING MECHANISM FOR INTERNAL COMBUSTION ENGINES.

Patented. June 27', 191

APPLICATION FILED MAY 27, I915- li I w? mm IIIIIII I 40, tinned operation of the e "PAT NT OFFICE;

REUBEN STANLEY SMITH, or MILWAUKEE, wrscousmfassmnon TO A. o. sm'rn I COMPANY, on MILWAUKEE, WISCONSIN, A CORPORATION or 'wrsconsm.

CONTROLLING MECHANISM FOR INTERNAL- COMBUSTION ENGINES.

Continuation of application Specification of Letters Patent Patented J une 2'7, 1916.

Serial No. 857,692, filed August 20, 1914'. This application filed May 27, 1915.

Serial No. 30,768.

To all whom it may concern Be it known that'I, REUBEN STANLEY SMITH, a citizen of the United States, re siding at Milwaukee, in the county of Mil- 5 waukee and State of Wisconsin, have in vented a certain new and useful Improvement in Controlling Mechanism for Internal-Combustion Engines, (Case 8,) of which the following is a full, clea'iyconcise, and

exact description, reference being had to the accompanying drawings, forming a part of this specification.

' My invention relates to controlling mechanism for internal combustion engines, and

has for its object the provision. of means whereby simple and efi'ective controlling means may be employed in connection with the engine so as to'easily control the operation thereof.

This is a continuation of my co-pending' application, Serial No. 857,692, filed August 20, 1914, one of the mOdifiCatlODS incorporating an improvement thereon.

Generally, the device of my invention consists in a lever attached to the exhaust valve of an internal combustion engine. Secured to this lever is a controlling means, preferably in the form of a wire or flexible member which extends to a position where the opcra tor may easily manipulate the same. Also secured to this wire is the throttle of the carbureter so that by operating the wire the throttle of the carbureter may be opened or closed as desired. The throttle and the exhaust valve are so connected that operation of the controlling wire in one direction causes the throttle valve of the carburetor to completely or almost completely close, before the exhaust valve is operated, a conwire inthe same direction lifting the exhaust valve. from its seat thereby preventing compression within the combustion chamber of the internal com- .bustion engine. When the controlling wire is moved in the opposite direction he exhaust valve will be first seated and then'the throttle valve opened to provide a free p assage. way from the carlmreter to the intake manifold of the engine. By means ofthe device of my invention l am enabled to control both the. throttle valve oi the carburetor and the exhaust valve byvirtue of one controlling means.

supply reservoir to the engine.

My invention will be more clearly under" stood by referring to the accompanying I drawings in which,

Figure 1 is aview partly in elevation and partly in section of a portion of an internal combustion engine, provided with the controlling means of my invention; and Fig. 2 1s a view similar to Fig. 1 of a'slightly modified form of'controlling means.

. In- Fig, 1, 3' illustrates the cylinder of the internal combustion engine provided with an phaustport 4 and an exhaust valve 5 seated in the walls of the exhaust port. The exhaust-valve 5 is provided with a down- .Wardly extending rod 6 terminating in a collar 7 rigidly fixed to the rod. Fitting, against a downwa ly extending boss 7 of the engine cylinder 3 is a forked spacer 8 provided with prongs 9 between which and the collar 7 is interposed a spring 10. This spring 10- serves to normally hold the exhaust valve 5 in its down, or closed, posi- '75 tion. Movably mounted in the crank case of the engine, illustrated'at 11, is a plunger 12 arranged' when operated to engage the lower end of the rod 6 to lift the rod, and, therefore, the exhaust valve 5, from its seat to providea passage way from the combustion chamber of the engine to the exhaust manifold. The plunger 12, as is well known in the art, is connected with the crank shaft. of the engine and is timed so as to cause the exhaust valve 5 to open at the desired time. Bolted, or otherwise secured, to the top of the cylinder 3 is a casing or manifold 13. Themanifold is provided,.\\'ith the usual passage way 14 extending to the supply chamber of a carburetor. The casing 13 is also provided with a tubular cham- 'ber 15 cxtending at right .a -igles'to the chamber 1-1. Arranged to operate withinthis chamber 15 is a throttle'valve 16 in 96 the form of a. cup having its base rigidly fixed to the controlling wire, 17. This wire 17 extends upwardly from the throttle valve through a cap 18 screw.threaded in the carbureter, asillustrated. Ifde'sired a flexible,100 guard 1!) may be used surroumling the wire 17 from the carburcter to the operator. The throttle valve 16 in the. drawing is illustrated in its open position so that a free passage of the fuel is permitted from the To normally retain the throttle valve in its open position, I provide n spring interposed between the'cover 18 and the throttle valve.

Git

The controlling wire 17' extends downwardly through an arm 21 carriedb'y' a bifurcated lever 22. The lever 22 is pivoted at 23 to some portion of the internal con bustion engine casing, illustrated at :24. The

lever, as illustrated, extends outwardly and has its bifurcated end embracing the rod 6 of the exhaust valve 5, its. upper face an gaging with the lower face of the collar 7. The controlling wire l'l extends downwardly a certain distance below the lower face of the lever 22 and carries an enlarged por-' tion 25.

From the description thus far given it will readily be seen that the throttle valve 16 may be opera-ted without: in any way interfering'with the exhaust valve mechanism. If it is desired to raise the exhaust valve 5 from its seat so as'to relieve the engine of compression, as," for instance, when it is desired to start the engine, the controlling wire 17 is pulled upwardly by the operator thus moving the throttle valve 16- to its closed position. \Vhen the throttle valve has reached-its closed position, or nearly so,

the enlarged portion 25, carried by the lower end .of the controllin wire, cn 'a 'es h n h the lowerface of the bifurcated lever 22.

As the-upward movement oi'thc controlling wire is then continued the portion will cause the lever to be moved to the position indicated in dotted -lines, tl'icrefore moving the exhaust valve 5 upwardly and off its seat against the tension of the spring 10. The crank shaft of the engine may now be revolved comparatively easily until a certain speed is obtained when the wire 17 is released or moved downwardly "to cause the exhaust valve to again assume its seated position. The throttle valve 16'1nay then be operated in the usual way to control the operation of the cngrii'ic.

1n the slightlymodified form illustrated in Fig. the exhaust valve is illustrated at 5, its cmiperatii'ig'rod at (3, the plunger mechanism zit-l2, and the cranlv' casing at turn connected to the/throttle valve 31 in the intake manifold 32. The manifold is bolted, or otherwise secured, to the engine casing provided with a port register- The outer end 0f ing With the intake port 3.3 of the engine.

The throttle valve 31 is arranged to reciprocate in a circular chamber 34- of the inanifold, a passage way being employed between the fuel chamber of the carbureterand the chamber 34. This passage way is not illustrated in the drawings for. the reason that it has been broken away in order to more clearly reveal the devices associated with the throttle valve. The throttle valve 31,'as

illustrated, is rigidly secured to the -rod- 30 which extends upwardly and carries at its upper end an enlarged portion 35 between.

which and a cup 36 is disposed a spring 37. This spring 3'2 serves to normally hold the rod 30, and thus the throttle valve 31, in its up, or open, position. The throttle valve 31., lllnistrated in the drawings,'1s shown in its closed position, the controlling wirel'l hav ing been pulled a certain distance to cause the throttle valve to assume this position. now, a continued pull is placed on the controlling wire 17 the bifurcated lever 22 will be rotated in a clockwise direction thereby causing its inner, or bifurcated, end to engage with the nut 28 carried by the plunger mechanism 12. As this bifurcated end engages the nut and raises it the plunger mechanism will engage the rod 6 of the exhaust valve 5, and-thus raise/it or remove" it from its seat thus providing a passage way between the combustionchamber and the exhaust manifold of the engine;

Having thus described my invention what I claim as new and desire to secure by Letters Patent of the United'states is:

1. A device of tlurclass described, con'r prising an internal combustion engine, a

throttle for controlling the supply of corn bustible fluid to the engine, an exhaust valve I for said engine, means for normally retaining the throttle in open position, a wire ex tending from the throttle arranged. when operated to close the throttle, and means interposed between the throttle and'cxhaust valves whereby the latter is opened when the throttle valve is moved to closed position.

2. A device of the class described, comprising an internal 'con'ibustion engine, a throttle forcontrollingthe supply of coinbustible fluid to the engine, an exhaust valve for said engine, means for normally retaining the throttle in open position, a wire e2;-

tending from the throttle arranged. when operated to. close the throttle, and means interposed between the throttle and exhaust valves whereby the latteris opened when the throttle valve is moved to closed position,

said last-mentioned means having lost-inotion connection with the exhaust? valve.

3. A device of the class described, co1nprising an internal combustion engine, a throttle valve forv CODtI'OlllIlg the supply of combustible fluid to the engine, an exhaust valve for said engine, manually-controlled devices for operating the throttle valve, and means arranged to open the exhaust valve when the throttle valve is moved to closed position.

4. A device of the class described, comprising an internal combustion engine, a piston valve controlling the supply of combustible material to the engine cylinder, a spring normally tending to hold the-piston valve in open position, an exhaust valve for said cylinder, engine-operated devices for cyclicly operating said exhaust valve, means for manually-operating the piston valve, and means connecting the piston valve and exhaust valve whereby the latter is moved to open position when the piston valve is moved to closed position.

5. Adevice'of the class described, coinprising an internal combustion engine, a

throttle controlling the supply of combustible fluid to the engine cylinder, an exhaust valve for said cylinder, means for manually operating the throttle valve, and a lost-motion connection between the throttle valve and.

R. STANLEY SMITH.

Witnesses:

LEVERETT C. WHEELER, IRMA D. BREMER.

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