US1806016A

US1806016A - Rotary valve

Info

Publication number: US1806016A
Application number: US460000A
Authority: US
Inventors: Griffith Earl William
Original assignee: Individual
Current assignee: Individual
Priority date: 1930-06-09
Filing date: 1930-06-09
Publication date: 1931-05-19
Anticipated expiration: 1948-05-19

Description

May 19, 1931- E. w. GRIFFITH 1,806,016

ROTARY VALVE Filed June 9, 1930 2 sheetsheet 1 lll ha f.

' w 2o w52) in ff Q (fi-EMA @Si ze JNVENTOR BY f ATTORNEY.

May 19', 1931. E. w. GRIFFITH 1,805,016

ROTARY VALVE Filed June 9, 1930 2 sheets-sheet '2 fav-L W, @rif/7774 INVENTOR.

BY if, /f/

A T1' ORNE Y.

Patented May 19, 1931 vlirica EARL WILLIAM GRFET-L' 0F AL-ART, TEXAS Application filed eTune 9,

The present invention contemplates the provision of a new and improved rotary valve for internal combustion engines, and wherein a. single rotating sleeve is continuously rotated during the operation of the engine, and from the shaft thereof.

In carrying out the invention, the head of the engine is provided with spaced inner and outer tubular casings, between which rotates the valve sleeve, the latter having a plurality of openings a 1ranged in staggered relation, and adapted to register with inlet and outlet ports of the casing at predetermined intervals, to properly control the inlet and exhaust te the cylinders of the engine.

ln accordance with the present invention, the inner casing is divided by a longitudinal partition into inlet and exhaust 'passages which are coeiitensive in length with the' casing and closed yat one and opposite ends, with said passages communicating with the adjacent inlet and exhaust ports of the head, and controlled by the rotary sleeve.

An important object of the invention resides in the provision of a valve of the above mentioned character, wherein the rotatable sleeve can be easilyA and quickly inserted bet veen and removed from the spaced inner and outer casings of the head without disturbing the latter, and designed to provide unobstructed communication with the intake manifold of the engine when in position for use.

The nature and advantages of the invention will be better understood when the following detail description is read in connection with the accoinnanying erawings, 'they l invention residing in the construction, combination and arrangement of `carts as a o .L claimed.

ln the drawings forming iaart of this an- V a Lp L alication like numerals of reference indicate l similar parts in the several views and wherein:

Figure 1 is a fraoinentar side elevation c 1 D 1 1 of an engine, partly in section snowing tne valve forming the subject matter of the in-A vention.

1930. Serial No. f lGGO.

Figure 2 is a longitudinal sectional view through the valve.

Figure 3 is a sectional view on line 3,#3 of Figure 1.

Figure d is a view in elevation of 'the rotary valve sleeve.

Figure 5 is a sectional view on line of Figure 1.

Figure 6 is a sectional view showing the position of the rotary valve sleeve on the compression stroke of the engine.

Figure 7 is a similar view showing the position of the rotary sleeve on the liiing stroke.

Figure 8 is a similar view showing the positie-nef the sleeve on the exhaust stro re.

Referring to the drawings in detail 10 in dicates an explosive engine of well known construction wherein the cylinders are iiidicated at 11 and each equipped with a piston 12. rllhe head of the engine is provided with spaced inner and outer tubular casings 13 and 14e respectively, and each casing is provided with spaced parallel rows of inlet and exhaust ports for the cylinders of the engine. The inlet ports of the respective casings are aligned and indicated at 15, while the exhaust ports of the respective casings are aligned and indicated at 16. lt is of course manifest that the number of ports can be varied depending upon the number of cylinders included in the engine construction. f

As clearly illustrated. in Figure 2 the inner casing 13 is divided by a longitudinally disposed partition 17 into an inlet chamber 18 and an exhaust chamber 19, and these chambers are arranged coextensive in length with said casings. `The partition is formed with an end wall 2O which closes one end of the exhaust chamber 19, while the opposite end of the inlet chamber is in open coinmunication with the intake manifoldv 21 of the engine. While one end of the intake manifold 21 communicates with the adjacent end of the inlet chamber 18, the opposite end of the manifold communicates with a passage 22 which passes through the stationary inner and outer casings 13 and 111 respectively.

A valve sleeve 23 is located between the inner and outer casings 13 and 14C respectively, and is continuously rotated during the operation of the engine. The valve sleeve 23 is closed at one end as at 24, and projecting from this end is a short snaft 25 which carries a small gear 26. lVhile the valve sleeve may be rotated in any suitable manner, the gear 26 preferably meshes with a gear 27 carried by the engine shaft, so that the valve is continuously rotated during the operation of the engine. rllhe valve sleeve 23 is provided adjacent one end with acircumferential series of spaced openings 28 which communicate with the adjacent end of the intalre manifold 21 tnrough the passage 22 above referred to. Consequently the charge of fuel can be readily admitted to the inlet chamber 18 while the valve sleeve is rotated. rlhe shaft 25 carried by one end of the valve sleeve is journaled in a suitable cap or been g 29 which close, the adjacent ends of the spaced inner and outer casings 13 and la respectively, and this cap 29 is bolted or otherwise suitably secured as at 30 to the engine head. By reason of this constructiom it is obvious that the cap can be easily removed to permit the valve sleeve 23 to be either inserted within the space between the inner and outer casings 13 and 1alrespectively, or removed therefrom as the occasion may require without disturbing the head of the engine.

'.lhe valve sleeve is provided with a plurality of spaced openings 31 which are arranged in staggered relation throughout the length of the sleeve, and which openir are arranged to be brought into registration with the aligned inlet and exhaust ports of the spaced casings at predetermined intervals, and thereby properly control the inlet and exhaust to the cylinders of the engine.

In practice, the charge of fuel from the intake manifold 21 enters the inlet chamber 18 from the opposite ends tnereof, and as clearly illustrated in Figure 3, when the piston 12 of a cylinder is about` to start downwardly on ils intake stroke, an opening 31 of the rotary valve sleeve is in communication with the inlet openings of the inner and outer casings for the particular cylinder. Consequently the fuel passes through these openings from the inlet chamber 18 to the cylinder. As illustrated in Figure 6, as the piston starts upwardly within 'the cylinder on its compression stroke, the valve sleeve 23 vhich continuously rotates during the operation of the engine has been moved to cover both the inlet and exhaust ports of the spaced inner and outer casings, and the position of the opening 31 of the sleeve occupies the position shown in Figure 6. When the piston starts downwardly on its r tiring stroke, the inlet and exhaust ports of the opening 31 has been brought into registry with the exhaust ports 16, so that the exhaust gases are admitted to the exhaust chamber 19 of the inner casing, from where they pass through an exhaust manifold not shown. ltlhen the valve sleeve 23 is in a position to establish communication between a variicular cylinder and the exhaust chamber 19, the inlet ports for the particular cylinder are closed b y the valve sleeve as illustrated in Figure 8.

lVhile it is believed that from the foregodescription, the nature and advantages of the invention will be readily apparent, I desire lo have it understood, that I do not limit myself to what isherein shown and described and that such changes may be resorted to when desired as fall within the scope of what is claimed.

lVliat is claimed is:

A -rotary valve for explosive engines comprising spaced inner and outer stationary casings carried by the head of the enoine, a longitudinal partition dividing the inner casing into inlet and exhaust chambers extending throughout the length of the casing, an end wall carried by the partition for cloising the adjacent end of the exhaust chainber, said casings having aligned inlet and exhaust ports communicating with their respective chambers, a rotary valve sleeve insertable through an opening in one end Of the head into the space between said inner and outer casings, a removable cap carried by said end of the head and closing the adjacent ends of said casings, said valve sleeve being closed at one end and having a circumferential series of spaced openings adjacent said end, said inlet chamber communicating at both ends with the inlet manifold of the engine, and through the spaced openings of the sleeve at one end thereof, and a shaft projecting from the closed end of the sleeve and journaled in said cap, whereby said sleeve can be rotated.

In testimony whereof I affix my signature.

EARL WILLIAM GRIFFITH.