US966367A - Valve mechanism for internal-combustion engines. - Google Patents

Description

H. STEINGASSNER. VALVEMEGHANISM FOR INTERNAL COMBUSTION ENGINES.

APPLICATION FILED NOV. 17, 1908. RENEWED NOV. 11, 1909.

Patented Aug. 2, 1910.

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H. STEINGASSNER. VALVE MECHANISM FOR INTERNAL COMBUSTION ENGINES. APPLICATION FILED NOV. 17v 1908. RENEWED NOV. 11. 1909.

966,367. y Patented A1 1g.2,1910. I

Hil -w lf J4 70 )w' I j I 1/ .f 7261 3 Q} J I g H I II l 6V I ,I 63 [I M H. STEIN GASSNER. M VALVE MECHANISM FOR INTERNAL COMBUSTION ENGINES. APPLICATION FILED NOV. 17, 1908. RENEWED NOV, 11, 1909.

Patented Aug. 2, 1910.

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cams and coiiperating parts.

U ran fern nnnmann'srnmeassnnn, or New roan, 1v. a, ASSIGNOR, BY manor AND mnsnn ASSIGNMENTS, ro'arraannurrna, or new roan, N. Y.

VALVE MECHANISM FOR INTERNAL-COMBUSTION ENGINES.

g I -pecification of Letters E'atent. Application filed November 17, -1908, Serial No. 463,079.', Renewed. November 11, 1909. Serial No. 527,576.

Patented Aug. 2, 1910.

To all 'who'r'n it may qmcem:

Be it known that I, HERMANN STEIN- GASSNER, a citizen of'the United States, re-

siding in the city of New York, borough of Brooklyn, county of Kings, and State of New York, have invented certain new and useful Improvements in Valve Mechanism for Internal-Combustion Engines, of which the following is a clear, full, and exact description. 1

This invention relates to a valve mechanism for internal combustion motors, the object being to provide a valve mechanism that is simple but positive in action.

' A further object of this invention is to provide a valve mechanism, comprising an inlet and an exhaust valve, the-action of which is controlled by a single element, which in turn is operated by the crankor power-shaftof the motor, whereby a multiplicity of parts are obviated; suitable means being provided to regulate the action of said valves relative to the movement of the motor piston.

I will now proceed to describe my invention, the novel features of which I will finally claim, reference being had to the acoompanying drawings, forming part hereof, wherein- Figure 1 illustrates a vertical central sec-' tion of a motor equipped with myimproved valve mechanism, certain parts being shown in elevation; Fig.f2 is a fragmentary detail therefor; Fig. 5 is a sideelevation, partly. in section, showing another form of valve operatingmechanism; and Fig. 6 is a detail fragmentary end view of the operating Referring to the drawings, 1 indicates the cylinder of a motor, to which a crank-casing 2 is secured. Within the cylinder 1 a piston 3 is adapted to operate, in the usual manner, the said piston being connected to 'a crank 4 by a connecting-rod 5. The bore 6 of the cylinder 1, at the upper end thereof, communicates with a firing-chamber 7 within which the points 8 of a spark-plug 9. are positioned as shown. An exhaust passage 10 communicates with the ciiamber 7,'as does also an inlet duct 11. It will beof course understood that the passage 11 will be cone nected with a suitable mixing device for the air and combustible element, such a device not being shown.

At the point 12, where thechamber 7 and exhaust passage 10 meet, I place an exhaustvalve 13, which is provided with. a hollowstem 14, through which the stem 15 of an inlet valve 16is adapted to freely pass. It will be seen that the exhaust-valve 13 is open or hollow, as at 17, the said opening at the 19' (one only being shown), the said studs being engaged'by the-jaw 20 in the end of the bell-crank 'lever 21. The lever 21 is pivotally secured to a removable cap 22, as

at 23, and is provided with a downwardly extendlg arm 24. Between the seat 18 andportion 19 of the motor casing, 1 place a spring 25, the function of which is to re-seat the valve 13 after it has been opened to per- Y Y mit the burned gases to' escape.

The lower end of the stem 15 of the inlet valve 16 is provided with a spring-seat 26 having a convex surface 27, the said sprin seat being kept in contact with the bel crank lever 28 by a spring 29. The lever 28 is pivotally secured to the cap 22, as at 29',

and carries an'upwardly extending arm 30, which is normally adapted to impinge the arm 24 of the lever 21. The arm ,31 of the lever 28 is provided with aguid-e-way 32 (see Fig. 2), within which a block 33 is adapted to slide, the said block being provided with a roller 34, which is kept in contact with the periphery of the cam 35 by a spring 36. The cam 35 is carried by an auxiliary shaft 37 having mounted thereupon a gear 38, the said gear being operated by a pinion 39 mounted on the crankshaft 40. Thepurpose of slidably mounting the roller"34 is to adapt the said roller to be moved longitudinally of the lever-arm 31; so that the position of the said roller can be altered relative to the operating'faces of the cam 35, in order to regulate the opening of the valves 13 and 16 relative to the stroke of the oiston 3. The operating faces of the camreferred to are indicated by 41 and 42, the face 41 being adapted to open the valve 16, and the face 42 being adapted toallow the spring 36 to force the arm 31 downwardly, whereby the exhaust-valve 13 is opened. The mechanism operates as follows: In the position shown in Fig. -1, the piston 3 is about to rise and force the prodnote of combustion out of the cylinder 1. As

is indicated, the crank 4 is on its lower dead center and the roller 34about to lower. If the shaft 40 is revolving in the directionof the arrow 43, the cam 35 will revolve as per the arrow 44, and as the crank 4 leaves the dead center the cam 35 will be moved around and allow the roller 34 to fall, whereby the arm 30 of the lever 28 will move inwardly and force the arm 45 of the lever 2111pwardly, whereby the valve 13 will open and stay open until the crank 4 approaches the upper dead center. At about the time that the said crank reaches the upper center,

the valve 13 will have closed, and the valve 16 will have been quickly opened by the cam face 41. As the piston 3 then comes downwardly, a charge of air and fuel will be drawn in through the opening 17 in the valve 13. The valve 16 will stay Wide open while the piston 3 is going down, by reason of the fact that the portion 46 of the cam 35 is concentric with the shaft 37. When the roller 34 reaches the incline 47,the valve 16 will be suddenly closed by the spring 29.

During the next upward or compression stroke and the following downward or Working stroke, the roller 34 will travel along the concentric portion 48 of the cam 35,

whereby both of the valves 13 and 16 will.

spring 36 when the cam face 42 of the cam allows the arm 31 to move downwardly. The strength of the spring 36 will be sutficient to compress the springs and 29, as

when the lever-arm 31 moves downwardly the lever-arm 21 will move upwardly, whereby the valve 13 will be opened. As the valve 16 is carried by the valve 13, it will of course be carried upwardly with the valve 13. The movement of the valve 13 will not be .enough to cause the heel 50 It is quite obvious that the thereof to leave the-socket 51 therefore the duct 11 will never be in communication with the exhaust passage 10.

Fig. 3 illustrates a modified form of valveoperating mechanism which comprises a lever-arm 52-, which is connected'to the hollow-stem 53 of the exhaust valve 54. The

'yalve 54 is kept against its seat by a spring 55. The'valve 54 carries an inlet valve 56,

the stem 57 of which passes through the hollow stem 53 of the valve-54, the said stem being provided with a spring seatv 58 provided with a roller 59, which is kept in contact with the face of a cam 60 by a spring 61. The cam 60 carries an auxiliary adjustable cam 61, the said cam 61 being adapted to operatethe lever-arm-52 and valve 54 controlled thereby through the medium of a rod 62. In the above described modified form of valve mechanism, the time haust-valve 65 carries an inlet valve 68, the

stem '69 of which passes downwardly through the hollow stem 65 and terminates in a yoke 70, which carries a roll 71. The auxiliary shaft 72, which is operated as shown from the power shaft, carries two duplicate cams 73 and a single cam 74, which is mounted between the cams 73, as shown in Fig. 6. The cams 73 are ada ted to operate the valve 65, while the earn. 4 operates the valve 68. To return the valves 65 and 68, after each operation, .I provide springs 75 and 76, respectively.

Having now described my invention, what I claim and desire to'secure by L tt P t."

out is: Y a v v 1. A gas engine provided with a passage for gases, a valve seated in said passage havinga central opening and adapted to control the passage of gases through said passage, said gas engine being also provided with a gas-duct in-communication. with the opening in said valve, a second valve carried by the valve first named adapted to control" the flow of gas through the opening therein, a lever adaped to operate the valve first named, .a second-lever adapted to operate the first lever, an operating cam adapted to act directly upon the said second lever, and means whereby the valve, which is carried by the valve first named, can be operated by said cam.

2. A gas engine provided with a passage :Eor gases, a valve seated in said passage havmg a central opening and adapted to control the passage of gases through said passage, said gas engine being also provided with a gas duct in communication with the opening in said valve, a second valve carried by the valve first named adapted to control the flow of gas through the opening therein,

a a lever adapted to operate the valve first named, a second lever adapted to operate the first lever, an operating cam adapted to act directly upon the said second lever, means whereby the valve, which is carried by the valve first named; can be operated by said cam, and adjustable means normally in contact with said. cam carried by the said second lever, adapted to regulate the time of operation of said valves.

3. A gas engine provided with a passage for gases, a valve seated 111 sald passage having a central o )ening and adapted to control the passage 0 gases through said passage, said gas engine being also provided with a as duct in communication with the opening in said valve, a second valve carried by the valve first. named adapted to control the flow of gas through the opening therein, a lever adapted to operate the valve first named, a second lever adapted to operate the first lever, an operating cam adapted to act directly upon the said second lever, means whereby the valve, which is carried by the l valve first named, can be operated'by said cam, a slidably adjustableblock carried by said second lever, a roller carried by said block adapted to normally contact said cam,"

.lower end of said tubular stem, a roller mounted at the lower end of the stem of saidinlet valve, a cam adapted to .operate said exhaust valve, a spring adapted to keep the roller on said hollow stem in contact with said cam, a cam adapted to operate said inlet valve, and a spring adapted to keep the roller on said stem in contact with the cam last named.

Signed at New York city, N. Y.,'this 13th day of November, 1908.

HERMANN STEINGASSNER.

Witnesses:

MAX ARENs, EDWARD A. JARVIS.

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