US1135078A - Rotary valve mechanism for gas-engines. - Google Patents

Description

J. M. TRNER. RGTARY VALVE MECHANlSMfOR GAS ENGINES. APPucATloN msn Famzs. 1912, 1,135,07, Patented. Apr. i3, 1915. asians-SHEET 1.

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ll M. TRINER. ROTARY VALVE MECHANSM FOR GS ENGINE APPLICATiON FILED FEB.26, 12H2,

Datented Apr. 13, 1915.

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iwi U I. M. TRINER. ROTARY VALVE MECHANISNLFOR GAS ENGINES.

APPLICATION FILED FEB. 25,19I2.

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m I' r to provide a large wearing surface which insures the parts against becoming loose in time. This construction also possesses the advantage that the pressure caused by the explosions Will be distributed over large valve seat area, and the warping or distortion of the lvalve members etectively eliminated. In addition to' this practically all of the valve surfaces are sufficiently removed from the influence of the heat produced by combustion or' the gases, that they may be properly lubricated. As a further precaution against destruction or damage by excessive heating I prefer to surround the valves and valve casings by Water jackets 18 in which a iow of cooling water may be maintained. These Water'jaclrets may be, if desired, formed as a part'of the Water cooling jackets surrounding the cylinder.

The valve' members 16 and 17 are provided with passages or port controlling openings 20 which are circumferentially or angularly disposed in accordance with the timed relation and sequence in which it is desired that the explosions take place and the cylinder operate,'and the'y form and dispositionof these passages may be determinedv by operating conditions and other factors entering into theconstruction of engines of this character. In Figs. 1 and 2 I have shown these passages as formed by cutting V shaped notches'or slots in the peripheries of the These passages occupy sectional circle of the valve member, and are preferably of a length correspondingl to the length of the' ports which they control: When these valve passages are made in this form, I provide suitable inlets and outlets 21 and 22 with which, during their rotation, they are adapted to register and complete communication with the ports 18 and 14: respectively. As shown in Figs. l and 2, the exhaust outlets or passages 22 are laterally disposed above the cylinder heads in close relation to the outlet or exhaust ports 14:, and

are so arranged that any suitable piping may be connected thereto for the purpose of carrying ofi' the exhaust gases and products of combustion. The gas'inlet passagesV 21 are preferably disposed below the gas inlet valve 17, and may be connected to any suitable source of gas supply'. These passages 21 are likewise arranged in close relation to the intake ports 13, so that communication therewith may be completed b'y the respective valve passages 2O during the rotation of the valve. f

In the case of the modification shown inv Figs. -3 ande it will be seen that the valve passages 20 are in' the form of elongated recy tangular slots or holes passing diametrically through the rotary valve members, and angnlazlly'arrangcd in accordance with 'the desire-'.1 timing of the engine. In connection with this form of valve passage the exhaust passages 22 and the gas inlet passages 21 are so arranged that when the valve passages 20 are in register with the outlet and inlet ports 14 and 13 the passages 22 and 21 Will be in register with the valve passages 20, as clearly shown.

I sometimes find, under certain conditions, that extremely satisfactory results may be obtained by eliminating the gas inlet passages 20 and the exhaust passages 22 in the members are made tubular, as just described,

I prefer that the portcontrolling passages or openings 20 communicate directly with the interior passages 25 and 26, and that they be sufficiently Wide tov properly permit the intake ,of gas or the outovvofl exhaust. Anyt suitable lmethod. of connecting these tubular valves to supply the exhaust pipes,

may be' employed, In Fig. 6, however. I have shown a satisfactory construction by which these results may be accomplished. It

will be seen that one end of each of the tubur lar valve members is' provided-with a V- shaped flange or rim 30,'which fits Within 1 the enlarged internally threaded ends of al supply pipe 31 and an exhaust pipe 32. Into the enlarged ends of the supply and exhaust pipes I screw threaded collars lwhich engage the flanges 30 and take the end thrust on the valve member. If desired an additional locking collar 34 may be provided in each case to insure the collars 33 against becoming loose or unscrewing. This construction, while permitting the valves to rotate, lforms sealed or gas-tight joints between the valves and the pipes connected thereto, and if desired, as a further precaution against leakage. suitable packing may be employed.

I lind that excellent results are obtained by taperingthe rotaryvalve members and their casings or-seats; such, for instance, as shown in Fig. 6. This constructionenables me to properly seat the valves in the event that they or their seats become worn. The tapering of these parts is advantageous whether the valves are constructed as shown in Figs. 1 toll inclusive, or whether they are of the tubular construction, as shown in Figs. 5 and- 6. ln order that the valve meme tion, I thread the portions of the valve members adjacent their ends, and provide thereon the threaded collarsvor nuts 35.

These collars may be locked in their adjusted positions by additional collars 36, as clearly shown in Fig. 6.

Any suitable driving mechanism may be employed for rotating the valves. The construction shown in the drawings, however, permits the use of a direct driving connecti-en 'with the main shaft et the engine, The nee o'l' gears inaVT thus be avoided by providing sprocket Wheels 37 and. 38 on the Yalve ineinbers and the niain shaft of the engine respectively, and by connecting the correspornling vsprockets by ineens of endless chains 39, preferablyY of the noiseless type, in the constructions shown in Figs. il to Lif inehisive, these driving connections or the valves may be connected at opposite ends oi' the engine, but. in the construction shown in Figs. 5 and G it is advisable to place the d-:ivinfrI connections for both valves at the saine end oi the engine in order to leave the opposite ends of the valve members iirce for connection with the exhaust and supply pipes.

it is thus seenthat have provided a simple and reliable valve mechanism capable oi proper balance, lubrication and ad justnient; which may driven directly and positively, troni the engine shaft, and Which eliminates the noise and other objections incident to puppet valves and their operating meehaiiisin.

Mv ini ,it-.ion capable oi" embodiment. in various other structures without departing from the 'spirit and scope thereof, and

to understood vthat am not liinit- )articular construction shown in Antfs. i eiaiin as .new is:

l. in an internel combustion engine, the combination of a cylinder having a port therein and a valve seat at said port; a rotary valve mounted in Said valve seat and having one end extending therefrom; a supply pipe having its discharge end en lai-ged and said enlarged end embracing the extending end of said valve; and means car-- ried by said supply pipe locking the latter and said valve against relative movement.

2, In an internal combustion engine, the combination o1' a vcylinder having a port therein and a valve seat at said port; a rotary valve mounted in said valve seat and haring one end extending therefrom; a

rotary valve mounted in said valve seat.

and having one end extending therefrom; a tl-shaped peripheral flange on the extending end of said valve; a supply pipe having its discharge end enlarged and embracing the extending end of said valve, there being a seat in the enlarged end of said pipe engaging one side of said ii-shaped flange; a collar threaded in the enlarged end of said pipe., engaging the other side of said V-shaped flange, locking said supply pipe ani valve against relative movement and sealing the joint between the supply pipe and valve; and a lock nnt threaded in the enlarged end of said pipe and locking said coilar against movement in said pipe,

in testimoni,Y whereof have signed my naine to this specilication, in the presence'o two subscribing Witnesses, on this 24th day of February, A. D. 1912.

Janes M. 'reinen Witnesses EsMn XVALTO'N, EDGAR Finnois BEAUBULN.

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