US1304839A - Rotary valve fob internal-combustion engines - Google Patents

Description

F. 8. WHITE.

ROTARY VALVE: FOR INTERNAL COMBUSTION'ENGINES.

APPLICATION FILED APR.2.19I8. I 1,304,889. Patented May 27, 1919 2 SHEETS-SHEET l.

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F. 8. WHITE. ROTARY VALVE FOR INTERNAL COMBUSTION ENGINES.

APPLICATION FILED APR. 2. I918;

Patented May 27, 1919. 2 SHEETSSHEET 2.

UNITED STATES PATENT OFFICE.

FRANK S. WHITE F DOS CABEZOS, ARIZONA.

ROTARY vALvE roniivrnmmn-eomnus'rioiv ENGINES.

Specification of Letters Patent.

Patented May 27, 1919.v

Application filed April 2, 1918. Serial No. 226.251.

- v Rotary Valve for Internal-Combustion Engines, of which the following is a specification.

The present invention relates tointernal combustion engines, and has more particular reference to a new valve for use with the same. I

The advantages of rotary valves have been well determined in various types of engines and other machines on account of the absuccessfully applied to gas engines owing to the high pressure, sudden impact, and high temperature evolved incident to the operation of the engine.

The object of this invention is to provide a rotary valve of such construction that it may be employed advantageously in gas engines. The improved valve of this invention is of such construction that it is balanced by the internal pressure and cannot bind against its seat, and is not affected by high temperature and sudden impact of the expanding charge within the cylinder. The improved valve is also provided with means for preventing deposits of carbon thereon.

The above, and various other important objects and advantages of this invention will be in part understood, and in part set forth in the following detailed description of the present preferred embodiment, the same being'illustrated in the accompanying drawings, wherein; c

Figure -1 is a fragmentary vertical section through the upper end of a cylinder of an internal combustion engine having a rotary valve constructed according to this inven-' tion applied thereto.

Fig. 2 is a horizontal section through thesame taken substantially on the plane indicated by the line 22 of Fig. 1.

Fig. 3 is a similar view taken on the line 3-3 of Fig. 1.

Fig.4 is a detail view of the valve removed from the cylinder, showing the parts partly separated.

Referring to these drawings by numerals,

- 10 designates the head of the cylinder of aninternal combustion engine which is jack- "metrically opposite points, project a pair of lugs 13.

An annular valve seat 14 fits in the opening of the top of the cylinder and is sup-.

ported upon the flange 12, a gasket or pack- Y ing 15 being interposed between the two. The valve seat 1 1 is held against the flange by a housing or cap 16 of inverted cup shape, the free edge of the cap projecting into the cylinder opening and bearing upon the upper. edge of the valve seat 1 1 with a gasket or packing ring 17 interposed therebetween. The cap,16 is retained in position by a plurality of machine bolts 18 which pass through an outstanding flange 19 formed upon the cap near its upper end.

The inner surface of the valve seat 14 is frusto-conical, and the valve seat is pro vided, at one side, with a pair of vertical ports 20 which lead to intake and exhaust passages 21 and 22 respectively formed in the cylinder head 10. The lower end of the valve seat 14 is stepped, and the lower edge of the valve seat is notched, as at 23, for. the reception of the lugs 13 forholding the valve seat from turning in the cylinder head.

A rotary frusto-conical valve 24: is mounted in the seat 14, and like the seat, flares outward from the cylinder, the pitch being to a degree substantially to provide the lower external diameter of the valve equal to the upper internal diameter thereof. This formation is adapted to prevent binding of the valve against its seat under internal pressure. The valve 24 has two vertical ports 25 of a width. not more than the distance between the ports 20 of the valve seat. The upper end of the valve 24 has an annular outward offset 26 forming an up- The head 28 is peripherally grooved and aline with the ports 20 of the valve seats 1a.

The lower end of the liner has notches 3% receiving the lugs 13 for holding the llner from turning.

The pin 29 has a sleeve 35 thereon which is free to turn thereabout and which is pro vided on its lower ends with outstanding arms 36 provided with lugs 37 on their ends adapted to engage in notches 38 in theupper edge of the valve 24. A worm wheel 39 is threaded upon the upper end of the sleeve 35 and is locked thereto by a key 40. The

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turns of t e engine.

cap 16 has journaled through one side thereof a shaft 41 upon which is mounted a worm 42 meshing with the worm wheel 39 for turning the same. The shaft 41 may be turned in any suitable manner and, for enabling the connection of a series of cylinders, the shaft has on one end a bifurcation 43 adapted to receive a tongue 44 formed on the other end of the shaft. The pin 29 has a kerf in its upper end for the reception ofa suitable tool for adjusting the pin to tension the disk or head 28.

When the shaft 41 is-turned the gearing turns the sleeve 35 and the valve 24.

When the port 25 of the valve registers with one pairofalined ports 20 and 33 opposite the exhaust passage 22, the parts of the engine are so timed as to expel the burnt gases. The further movement of the rotary valve 24 moves the port 25 in between the intake and exhaust passages, and finally opens the passage between the next pair of ports 20 and 33 opposite the intake passage 21. One cycle opens and closes the ex- The second cycle opens and closes the intake. The third and fourth cycle, compression and firing, moves the second valve port 25 around to the exhaust passage, thus givin a half turn of the valve to two So with two ports, in the valve at directly opposite points it is only necessary for it to make one revolution to every four revolutions of the engine.

What is claimed is:

1. In'a rotary valve for gas engines, the combination of a cylinder head having an opening therethrough with a flange at the inner end of the opening, a valve seat fitted to the flange, a cap secured in the outer end of the opening against the valve seat to hold it in place, a valve bearing against said seat, a removable head fitting in the upper end of the valve and adjustable pin carried by the cap and engaging the head to maintain it in the valve and take up thrust, means supported on pin for turning the valve, a

liner in the valve, and means for holding the valve seat and the liner from turning, said valve seat and liner having ports registering with the intake and exhaust passages of the cylinder, and the valve having two ports adapted to register with the ports and the valve seat, the liner, and the valve havinu ports therein adapted to register.

' 3. n a rotary valve for gas engines, the

combination with a cylinder, a valve seat fitted in the top of a cylinder, a rotary valve on said seat, a stationary head fitting in the upper end of the valve, a support on the cylinder engaging the head to take up thrust thereon, said valve seat and valve flaring outward from the interior of the cylinder and provided with ports to register.

4.. In a rotary valve, the combination with a cylinder having intake and exhaust passages, a valve seat fitting through the wall of the cylinder, a rotary valve fitted to the seat, a cap secured through said wall of the cylinder and engaging the seat to hold the same in place, a pin adjustably' mounted in a cap and projecting into the upper end of the valve, a head sta-tionarily mounted in'the valve against the pin, a sleeve mounted to turn ona pin, interlocking means between the sleeve and the valve, a shaft journaled in the cap, gearing between the sleeve and the shaft, said shaft being adapted to be rotated for turning the sleeve and the valve,

and a liner arranged within the valve and interlocked with the cylinder.

In a rotary valve for gas engines, the combination with a cylinder having intake and exhaust passages, a valve seat secured through the wall of a cylinder, a rotary valve fitted to the seat, a cap carried by the cylinder over the valve seat, a stationary head fitting in the outer end of the valve, a pin threaded through the cap and engag ing the head to hold it in the valve, a sleeve mounted to turn upon the pin and having connection with the valve, a worm gearkeyed to the sleeve, a transverse shaft journaled in'the cap and provided with a coupling element on each end formed complemental to each other for admittin connection for operating a plurality 0 similar shafts, and a worm mounted on the shaft in the cap and meshing with said gear for body, a stationary or fixed head in the larger open end of the body, the Wall of the body having a pitch suflicient to provide an upper internal diameter equal to the lower external diameter, forming a pocket or chamber Within the valve of a formation to perfectly balance the valve upon compression of gas Within the cylinder.

7. In a rotary valve, the combination of a cylinder having an opening therethrough and a cylindrical valve seat in the opening,

of a conical valve fitted to the seat,v a stationary head fitting in the enlarged end of the valve, a housing carried by the cylinder over the valve, a pm threaded through the housing and' engaging the head to hold it against its seat and receive the thrust of compressed gases, and a liner Within the valve adapted to shield the same against

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