US1176857A - Rotary valve. - Google Patents

Description

P.' B. SAMPLES.

ROTARY VALVE.

APPLICATION FILED DEC- 3, 1913- 1, 176,857. Patented Mar. 28, 1916.

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ROTARY VALVE.

APPLICATION FILED DEC. 3, 1913 1,176857. Patented Mar. 28,1916

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ROTARY VALVE.

To all whom it may concern:

-Be it known that I, PERRY B.. SAMPLEs, a

citizen of the United States, residing at- I-luntington, in the county of Cabell and State of West Virginia, have invented new and useful Improvements in Rotary Valves, of which the following is a specification.

This invention relates to improvements in rotary valves, especially designed for use in connection with explosive engines, for the purpose of controlling the admission and retention of the charge and the exhausting Spirit gases at proper predetermined interva s.

, A furtherobject of the invention is to provide a rotary valve which will perform the required functions of admitting the charge, retaining the same during the explosion, and permitting of the exhaust of the spent gases, and which will perform these provide a valve of the character described,

together with a novel construction of valve casing and arrangement of ports and passages, whereby efliciency of action is insured without the necessity of making the valve of excess diameter.

The invention consists of the features of construction, combination and arrangement of parts herein fully described and claimed, reference being had to the accompanying drawings in w ich:

Figure 1 is a side elevation, with the valve casing shown in longitudinal section, of a two-cylinder engine embodying my invention. Figs. 2,3, 4 and 5 are transverse sections taken Ql1 a line through one of the engine cylinders and showing the positions of the parts at different points in the cycle of operation of the engine. Fig. 6 is a vertical transverse section through the valve in, 3 the upper cylinder head, 4 the valve casing, and 5 the rotary valve.

In the following description, I have set forth the construction as relating to a single engine cylinder, but it will be understood Specification of Letters Patent. Patentgdl M 28, 19;;

. Application filed December 3, 1913. Serial No. 804,547.

and observed that the features specified are duphcated in a two-cylinder engine of the character disclosed.

In F1gs. 2, 3, 4 and 5 I have shown, respectively, the relative positions of the piston, valve, and inlet and exhaust ports, at the beginning of the exhaust, intake, compression and power stages in the cycle of operation of the. engine.

The valve casing 4 is formed to provide an inclosed chamber 6 in which the valve 5 is mounted for rotation, and in practice the valve is driven at one-fourth the rate of speed of the engine shaft. The gearing for rotating the valve may be of any preferred construction, but in the present instance I have shown the use of a valve actuating shaft 7 connected with the engine shaft 8 by 1-4 beveled gears 9 and with the valve shaft 10 by 1-1 beveled gears 11.

' The casing 4 is provided at diametrically opposite sides with an inlet port 12 and an exhaust ort 13, which communicate respectively with pockets 12 and 13 formed in said casing, while the upper cylinder head '3 is provided withinlet and exhaust ports 14 and 15 communicating-with pockets 14 and 15' formed in the casing. The chamber 6 is provided with a pair of inlet ports 12 and 14 communicating with the respective pockets 12' and 14', and with a pair of exhaust ports 13 and 15, communicating respectively with the pockets 13 and 15.

These sets of ports are adapted to be prop erly connected during the course of rotation of the valve 5 to perform the several functions before described.

As shown, the valve 5 is mounted to rotate snugly within the chamber 6 and is suitably journaled upon the 'valve casing, and said valve is provided with a single combined admission and exhaust port 16 extending diametrically therethrough, which port is preferably of a width equivalent to onesixteenth the circumference of the valve. In

practice, the ports in-the valve casing and valve are made relatively narrower and longer than the ports in the cylinder head,

so as to provide for a free flow of the fuel positions during the compression and-power stages of action. Fig.--2'shows-therelative positions of the ports and passages at the beginning of the exhaust, Fig.3 thei-posi tions of the ports and passages at the beginning of the intake, F ig.-4 the position of the valve during the compression stroke of the piston, and Fig. 5the position ofthe valve during the power stroke of the piston,

from which it will 'be'seen that the valve in its cycle of rotation is'adapted to admit a charge of fuel to the engine, hold the same retained during the compression strokeof the piston, firing of the charge and insuring power stroke of the piston, and tofinally permit of the discharge of the spent 'gases, after which the cycle of operation a'bove described is repeated. By the described arof operation not possible with rotarv valves which require to be operated at a high speed in order to properly connect the ports during the cycle of action of the engine.

'In a rotary valve mechanism for explocylinder havin sive-engines, the combination of an engine separate -and independent supply and ex aust ports, a valve casing *forn ed'to having an mner set of ports communicating with said inlet and exhaust ports oi the cyl-- inder, and also having an outer set of ports, the'said' valve casing being provided with supply and exhaust compartments partitioned from eachother and communicating with the outer set of ports, said compartments being provided with inlet and exhaust ports, pockets upon the outer-sides'of the casing communicating with the lastnamed ports, said pockets being constructed for cooperation with suitable supply and exhaust connections, and a rotary valve arrangedinsaid circular valve chamber and having a diametrically extending port rovide a clrcular'valve chamber adapted for cooperation" with. the s'etsof ports in said valve chamber, the ports in the. casing, chamber and valve being'relatively longer and narrower than the ports in the cylinder, and 'gearinlg for rotating said valve from the engine's aft. I

In testimony whereof I aflix my signaof two-witnesses. PERRY" B. SAMPLES. "Witnesses: l

M; P. WIswnLL, J. 'O. C. LAMBERT. v

ture in presence

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