US1377647A - Automatic pressure-regulating valve - Google Patents

Description

w. B. s. WHALEY. AUTOMATIC PRESSURE REGULATING VALVE.

APPLICATION FILED lAN.28, I518- Patented May 10, 1921.

Fig; 5

r .71 IE? rarest WILLIAM B. SMITH WHALEY,

0F MADDEN, MASSACHUSETTS, ASSIGNOR T0 AMEEE- G15 MASSACHUSETTS.

A'U'IEOMATIG FRESS'URE-REGULATING VALVE.

Application filed January 28, 1918. Serial. its.

T 0 all whom it may concern:

Be it known that l, lVILLmM B. SMITH WHALEY, a citizen of the United States of America, and resident of Maiden, in the county of Middlesex and State of Massachusetts, have invented a certain new and useful Automatic Pressure-Regulating Valve, of which the following is a specification.

This invention relates to automatic pressure regulating valves and pertains more particularly to a valve adapted in its operation to automatically regulate, to adjustable limits of maximum pressure, any compressible body flowing alternately in either direction between two pressure creating or storage devices. Also, thereis provided means for bypassing the said compressible body about the automatic regulating features for any useful or desired purpose.

in order to illustrate my invention, 1 have shown in the accompanying drawing but a single embodiment, application and use thereof, wherein:

Figure 1 is a diagrammatic representation of a pair of two-cycle internal combustion engine cylinders, with the invention employed therebetween to regulate the precompression pressure of the fuel charge.

Fig. 2 is a central vertical transverse section through an automatic adjustable pressure regulating valve of my invention.

Fig. 3 is a horizontal section of the invention on line 3-3 on Fig. 2.

The terms employed herein are used in the generic and descriptive sense to indicate elements illustrated and are therefore not terms of limitation because of such use.

In the drawing, 10 and 11 represent cylinders of a two-cycle retarded internal combustion engine selected for convenience o illustration and for illustrating one application and use of my invention. At the lower ends of the cylinders below the skirt pistons usually employed, are the precompression chambers at 12 within which the fuel charge is first compressed or precompressed an from which the said charge is transferred through transfer ports to the combustion chamber above the pistons to be again compressed and burnt after the ignition point has been reached.

In my co-pending application, Serial No. 208.031. is disclosed a retarded combustion cycle engine of this character with a bypass Specification 01 Letters Eatent.

Patented May 113, 1.921.

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means or throttle valve and a conduit between the precompression chambers of a pair of cylinders to relieve or regulate the amount of precompression during the different stages or conditions of operation of the engine. The said valve may advantageously be replaced by this present invention as inclicated at 13 in Fig. 1.

Referring to said figure it will be seen that the bypass pipes 1i and 15 communicate with the precompression chambers of the cylinders 10 and 11 and are connected to the ends 16 and 17,- respectively, of the valve body 18. Between the said ends 16 and 17 are 'the alined ports 19 between which is the oscillatable gate valve 20 adapted to expose the said ports one to the other to permit of uninterrupted flow of the fuel charge from the precompression chamber of one cylinder to the other to prevent. reduce or induce precompression depending upon the position of said valve in exposing more or less of said ports 19 as one piston is descending to preoompress and the other cylinder is ascending to draw in a new charge of said fuel.

The gate valve 20 is oscillated and controlled by a shaft 22 secured thereto and extending through the gland 23 on the valve body 18 to a suitable point where it may be operated in any suitable or preferred manner and by means, such as for example. the controlling mechanism set forth in said copending application. The above stated method for regulation and control of precompression or the pressure of the compressible body, is suitable and convenient but does not permit of automatic regulation, especially when the gate valve 20 fully covers the ports 19 to entirely prevent bypassing from one precompression chamber to the other.

Therefore, I provide said valve body 18 with a side extension 25 having passages '26 and 27 communicating with the end 16 and overlapping an intermediate or intervening passage 28 communi ating with the end 17 of said valve body. The overlapping of said passages 26 to 28 inclusive herein is centrally of the valve body or at a point adjacent to the position of the valve gate 20 between the ports 19. Between the passages 27 and 28 and within the latter is a valve seat 30 normally engaged by a valve 31 on a stem. 32 slidable in a bearing 33 centrally of thevv valve 35 normally engaging the valve seat 36 within the passage 27 normally to close communication between the passages 26 and 27 to the passage 28 and vice versa. The body of the valve 35 is tubular and slidable within the bore 37 thereof is the head 38 integral with or secured to the valve stem 32. The said head 38 normally engages the end 39 of the valve 35 when both valves 31 and 35 engage their respective valve seats. The tubular portion 40 of said valve 35 is relatively long and is vertically slidable within the bore or bearing 42 vertically of the extension 25. Within the tubular portion 40 is a pressure regulating spring 44 the bottom of which rests on the head 38 and the top thereof is engaged by the adjusting head 45 on the screw threaded stem 46. The said threaded stem 46 engages with a similarly screw threaded gland 47 through top of the extension 25 to close the opening communicating with the bore or hearing 42. At the top of the threaded stem 46 is a handle 52 adapted to be grasped for the purpose of permitting of rotating of the stem 46 to screw it up or down to decrease or increase respectively the amount of compression on the spring 44and therefore the pressure of the same against the head 38 tending to maintain the valves 31 and 35 against their respective seats 30 and 36.

Thespring 44 being adjusted to the desired degree so that a certain pressure is required to be exerted against a valve face to cause it to leave its seat the operation of the valve is as follows:

The gate valve is assumed to be closed or in the full line position in Fig. 2 and the piston in the cylinder 10 on the right of ig. 1, is descending to precompress the charge in the precompression chamber 12. If the precompression pressure of the compressible body in the end 16 and passage 26 finally reaches a point in excess of the compression value of the spring 44, it exerts sufficient pressure against the bottom face of the valve 31v to cause the latter to disengage from the seat 30 moving the valve stem 32 compressing the spring 44. There is now direct communication of the passage 26 and the pipe 14 to the ascending piston .in the cylinder 11 and further precompression will not be had in the precompression chamber of the cylinder 10'. When the said piston reaches the downward limit of its stroke and the transfer ports are open between the precompression chamber and the combustion chamber, the said valve 31 will be acted upon by the spring 44 as the pressure is reduced by this operation and said valve will again engage itsseat.

en the piston in cylinder 11 descends and the pressure of precompression reaches the same value as before stated, the said the cap 48' screwed at 50 to the pressure in the pipe 15 and passage 28 will act against the lower face of the valve 35 forcing it against the head 38 and spring 44 lifting said valve from its seat 36 permitting of free communication between the passage 28 to the passages 26 and 27 to the pipe 14 and to the precompression chamber of the cylinder 10 as itspiston is ascending. When the piston injcylinder 11 reaches the lowest point in its stroke and the fuel charge is transferred from the precompression chamber to the combustion chamber, the spring 44 will overcome the reducing pressure and the valves will immediately reengage their respective seats and be ready for the next operation.

When the gate valve 20 exposes the ports 19 one to the other, by reason of adjustment of said valve, the fuel charge will pass freely in either direction in the pipes 14 and 15 and from and to each precompression chamber so that no pressure at this time will be suflicient to cause the valves 31 and 35 to act and therefore no result will be had from the latter until the said gate valve 20 again closes communication between said ports.

A valve embodying the principles herein disclosed is of great value for automatically regulating pressures in either direction to prevent uneven or varying pressures near the point of compression, especially combined with an adjustment that will permit of considerable regulation to meet the different or changing conditions encountered from time to time especially in the operation of internal combustion engines or other apparatus or mechanisms having other and similar non-mechanical, atmospheric or other changes of condition to contend with, offset or nullify.

It will be understood that many other applications and uses may be had with respect to this invention, and that the specific appli'cation is a convenient one merely for the purpose of the disclosure.

I have described herein one embodiment of my invention, but it is to be understood that the latter is not essentially limited to the specific construction and organization of said embodiment, since the same may be varied without departing from the proper scope of the claims.

Having thus described my invention in detail, what I claim as new is:

1. In a device of the character described, an oscillatable .valve member coiiperating with communicating ports through the body of a valve, said body being provided with an extension having a pair of spaced passages communicating with one of said ports and provided with an intermediate passage communicating with the other port, the former passages overlapping the last men tioned' passage and a pressure regulating valve controlling the pressure to and from the pair of passages and the intermediate passage.

2. In a device of the character described, a valve casing having communicating passages normally closed by a valve adapted to operate under pressure applied in either direction through said passages and bypass means adapted to divert a compressible body in either direction from said valve.

3. In a device'of the character described, a valve casing having communicating passages from opposite ends thereof normally closed by a valve adapted to operate in either direction under the pressure of a compressible body flowing from either end of said casing, and means for diverting said compressible body from said valve.

4. In a device of the character described, a valve adapted automatically to regulate the pressure of a compressible body flowing in either direction through said valve and means for diverting the said compressible body from said valve.

5. In a device of the character described, a valve having means for permitting a compressible body to flow in either direction therethrough and to divert said compressible body to regulating means to limit the pressure on either side of said valve.

6. In a device of the character described, a bypass valve having means permitting a compressible body to flow at all pressures in either direction therethrough and to divert said compressible body to means for regulating the pressure thereof at either end of said valve.

7. In a device of the character described, a bypass valve having a valve gate adapted to permit a compressible body to pass the said valve gate in either direction when open and cooperating with regulating means to limit the pressure of said compressible body on either side of said valve gate when the latter is in the closed position.

8. In a device of the character described, a valve body having provision for attachment at each end thereof to a conduit and with a gate valve therein adapted to permit of the passage of a compressible body at any pressure past said gate valve to either conduit, said body having communicating passages extending from either end thereof to said conduits and an automatically controlled valve normally closing communication fromone passage to another in either direction.

9. In a device of the character described, a valve body having provision for attachment at each end thereof to a conduit and with a gate valve therein adapted to permit of the passage of a compressible body at any pressure past said gate valve to either conduit, said body having communicating passages extending from each end thereof to said conduits, an automatically controlled valve normally closing communication from one passage to another in either direction, and a regulatable automatically controlled valve normally closing communication from one passage to another in either direction.

10. In a device of the character described, a valve body having provision for attachment at each end thereof to aconduit and with a gate valve therein adapted to permit of the passage of a compressible body at any pressure past said gate valve to either conduit, said body having communicating passages extending from each end thereof to said conduits, and a regulatable valve normally closing communication from one passage to another in either direction.

and to limit the pressure of said body on either side of said gate valve when the latter prevents communication from one end of said valve to the other and to said conduits.

Signed at Boston, in the county of Suffolk and State of Massachusetts, this seventeenth day of January, 1918.

WILLIAM B. SMITH WHALEY.

Witnesses DAVID LICHENSTEIN, TAKAING Kao.

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