US1237989A - Oscillating sleeve-valve. - Google Patents

Description

S. 7. ALLEN.

OSCPLLATING SLEEVE VALVE.

APPLICATION men Me. 6, m5.

l'atvmmi Aug. 21, 1917 ill V smmmni 'I. ALLEN, 01? LOS ANGELES, CALIFORNIA.

OSCILLA'I'I'NG SLEEVE-VALVE.

Specification of Letters Patent.

Patented Aug. 21, 191.7.

Application filed December 6, 1916. Serlal Ho. 135,60.

To all whom it may concern:

Be it known that I, SHERMAN T. ALLEN, a citizen of the United States, residing at Los Angcles, in the county of Los Angeles and State of California, have invented new and useful Improvements in Oscillating Sleeve-Valves, of which the following is a specification.

This invention relates to an internal com bustion engine and particularly pertains to a valve construction therefor.

It is an object of this invention to provide a valve for admitting gaseous fuel into an engine cylinder and permitting the es cape of exhaust gases therefrom, w ic-h will provide a rapid acting valve movement, and thereby insure the development of maximum power from the engine.

Another object this invention is to provide a valve having oscillating valve sleeves which may be moved, without great efiort, to open and close the valve ports and which may be actuated by a simple valve operating mechanism.

Another object is to provide an oscillating valve sleeve which will be so constructed as to reduce the hei ht of the motor and provide an engine 0 compact and simple Ailither object is to provide a valve sleeve which will ermit the explosive gases within the c lin or to be by a. spark" lug dispose in the cylin or head and exten ing downwardly therefrom, thereby insuring a thorough ignition within the cylinder.

Another object of this invention is to provide a valve sleeve adapted to oscillate and which is so constructed as to be insensi- 'tive to the strain produced by the valve actuating mechanism and at the same time permit the valve sleeves to expand in a manner to cause them to oscillate without leakage of the fuel.

Another object of this invention is to provide a valve sleeve which may be readily lubricated and mounted in its operative position.

It is a further object to provide a. valve construction that may be embodied within the design of most engines without alteration of the essential features of the on 'no construction.

it is operatively connected.

Fig. 3 is a view in elevation illustrating the complementary sleeve members as d5."- associated from their mounting and particularly disclosing the bayonet joint with which the contiguous edges of each sleeve is secured.

Fig. 4 is a view illustrating a fra entary portion of the valve sleeves'and isclosing the shape and disposition of the valve ports formed therethrough. y

Fig. 5 is a view in transverse section as seen on the line 5- -5 of Fig. 3 and illustrates the relation between the two osoillating valve members and their relative movement in relation to each other.

Fig. 6 is a view in section and elevation illustrating another manner in which the actuating arms may be constructed to oscillate the valve sleeves.

Referring to the drawings more particu larly, 10 indicates an internal combustion engine rovided with a series of cylinders 11 within which pistons 12 reci rocate and act upon piston rods 13 secure to the en gine crank shaft in any preferred manner. Reference being had to Fi 2 of the drawings it will be seen that t upper end of the'cylimler is open and formed with a counter-bore 14. This counter-bore is of a diameter to receive the lower projecting end of an outer oscillating valve sleeve and an inner oscillatin valve sleeve 16. These sleeves are forms with walls of a thickness to cause the inner diameter of the inner sleeve to be in alinement with the bore of the cylinder and thereby making a con tinuation thereof. v

The sleeves 15 and 1.6 are of similar struction and are cylindrical in shape-and I formed upon the outer face bayonet similar relation to each other,-

' ends. This crank of a length to properly prevent the leakage of gaseous fue between them. The outer sleeve is provided with a transverse slot 17 through which the rocking lug 18 of the inner sleeve extends. This lug is in alinement horizontally with a similar lug 19 of the sleeve 15 and extending in an opposite direction there to. These lugs are formed with recesses 20 adapted to receive the inwardly extending rounded ends of the shifting arms 21. These arms are secured upon shafts 22 and 23 which lie parallel and are provided in pairs to lie each side of the engine. Suitable bearings 24 are secured to the engine frame and ,slidably hold these shafts so that they may be reciprocated by a crank shaft 25 connected by pitman rods 26 to the shaft shaft extends transversely of the engine and is here shown as driven by a worm gear 27 in mesh with a gear 28 secured upon the crank shaft. In this manner the shafts 22 and 23 will be positively reciprocated and will oscillate the valve sleeves 15 and 16 to produce positive synchronism between the movement of the engine piston and its valve.

As a means of permitting the sleeves to resiliently ad'ust themselves'in relation to each other, t ey are split throughout the width of their walls and formed with a. joint. This joint is constructed by cutting a longitudinally extending slot 29 through the wall of the sleeve adjacent the edge of the split. This slot communicates with an opening of similar width through which a tenon 30 is placed. This tenon is formed with a reduced neck portion adapted to register with a reduced portion of the slot and has anenlarged T-shaped end which fits within the'slot 29. It will thus be seen that any force acting upon the sleeves to produce tan ential or radial movement of the sleeves will act Without distorting the sleeves, due to their interlocked con struction.

The outer sleeve is formed with an inlet port 31 and an outlet port 32, which are adapted to be moved to register with an inlet port 33 and an outlet port 34 formed through the inner sleeve. These ports, as disclosed in Fig. 4.01 the drawings, are recztangular in shape and of a verticaLhei ht greatly in excess of their horizontal wi th, making it lpossible for them; to open and close quick y and with a short range of movement. The port 31 of the outer sleeve and the port 34 of the inner sleeve are diametrically disposed in relation to each other, while the port 32 and the port 33 bear 2. although formed upon opposite sides of the center. of the sleeves. In this manner the sleeves may be rotated in one direction to cause ports 31 and 33 to register, while rotation in the opposite direction will produce re istration of ports 82 and 34. This, as wil be understood, is accomplished by the movement of the shafts 22 and 23 and their arms 21.

The valve sleeves are suitably housed within a removable valve head 35 which. is bolted by means of cap screws 36 to the upper open end of the cylinder block. This valve head is provided with an inlet opening 37 with which the ports 31 and 33 are adapted to register, and an outlet opening 38 With which the ports 32 and 31 are adapted to register. These openings communicate with the top of the cylinder through passage-ways 39 and 40 between which a threaded opening 41 occurs to re-- ceive a spark pin 42. In this manner the gaseous fuel willlve permitted to pass into the cylinder from the cylinder head and pass out of the cylinder after explosion, through the cylinder head, thus permittin the proper scaven ing of the cylinder an intake of fuel. e central disposition of the spark plu will cause the gaseous fuel to be thoroughly ignited and properly exploded. As illustrated in the drawings, the cylinder head is formed with water passageways 43 by which the head may be thoroughly cooled.

The modification disclosed in Fig. 6 of the drawin 5 shows the lugs 18 and 19 as formed W151 a vertical 0 ening through which a pin 44 extends. his pin is on: gaged by the ends of a slidable actuating arm 45 by which the valve sleeves are as cillated. The actuating arm 45 is formed with a cglindrical stem which is reciprocally mouite within a bore 46 formed in an arm 47 secured to the shafts 22 and 28. The bore 46 forms a pocket within which a coil spring 48 is positioned and adapted to bear against the inner end of the actuating arm 45. In this manner the shafts 22 and 23 may be reciprocated and the arm 4-5 vibrated so as to oscillate the sleeves, the spring 48 at all times causing the arm 45 to move with the pin 44 as it travels en its arc of oscillation.

In operation, the c linder block, its head, and the oscillating val ve sleeves are mounted as disclosed in Fig. 2 of the drawings, with the inner rounded ends of the actuatin arms 21 in register with the recesses formed in the ends 0 lugs 18 and 19. As the shafts 22 and 23 are reciprocated by the crank shaft 25, lug 18 will be acted upon to oscillate the valve sleeve 16 in the direction of the arrow w of Fig. 5. Simultaneous with this action, the lug 19 will be acted upon to oscillate the sleeve 15 in the direction of the arrow -b-. This will bring ports 81 and 35 in register and cause ports 32 and 34 to swing from each other into a positively sealed position. Reverse movement of oscillation to swing sleeve 16 in the direction of the arrow a and the sleeve 15 in the direction of the arrow -d-- 6 will act to move ports 31 and 33 out of regis- 1 for and ports 32 and 34 into register. This movement is timed in accordance with the povement of the piston and will thereby act to alternately open an intake and exhaust 10 port, the bayonet joint construction of the Sleeves preventing objectionable strains which would distort them. and impair their nroper operation.

It will thus be seen that the valve here provided for use with internal combustion engines is simple and compact in its constrnction, may b readily oiled, and may be actuated in a positively timed manner to open and close the intake and exhaust ports of an engine without damaging wear or distortion of the parts involved.

I claim:

A1: oscillating valve forinternal combustion engines, comprising an outer split valve sleeve, an inner split valve sleeve positioned Within said-outer sleeve, said sleeves having ports formed therethrough adapted to alternately register upon oscillation of the valve sleeves in relation to each other; and a bayonet joint with which the contiguous edges of each of said sleeves is formed to allow expansion of the sleeve Without subjectin it to the torsional strains prodncul by osclllation of saidsleeves.

In testimony whereof I have signed my name to this specification.

SHERMAN T. ALLEN.

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