US1646640A

US1646640A - Whistle control valve

Info

Publication number: US1646640A
Application number: US152208A
Authority: US
Inventors: Rogers W Daniel
Original assignee: Individual
Current assignee: Individual
Priority date: 1926-12-02
Filing date: 1926-12-02
Publication date: 1927-10-25
Anticipated expiration: 1944-10-25

Description

oct. 25,1927. 4 mmm 1,646,640 vWHISTLE CONTROL VALVE Filed De?. 2. 192* 1- lin' ifi-g1. -g 30 %Hu :en im f f Z5 75/ rk x f5. 7. 'gfv .-lll whistle fram Boiler 5 T L l 5.1M

Rage-rs Waniel,

Patented Oct. 25, 1927.

UNITED STATES ROGERS W. DANIEL, OF INDIANAPOLIS, INDIANA.

WHISTLE CONTROL VALVE.

Application led December 2, 1926. Serial No. 152,208.

My said invention relates to valves and more particularly tothe Whistle valves of locomotives 0r other vehicles using fluid res- Asure whistles. v The steam whistles vo the present time are usually connected directly to a pipe leading from the steam dome and are provided with an integral valve mounted beneath the bowl and operated by a system of rods and levers which finally become worn out or are shaken loose causing con-A siderable loss motion and also leakage of steam. Also the whistle is located in a position that should it become broken, it is necessary to draw the fire and blovv7 oil. the steam in order to replace a new one. It is therefore an object of my invention to overcome these ditiic-ulties by placing the valve in a vconvenient point` in the cab and entirely eliminating the levers and rods usually required to operate the whistle and using every particle of steam at the whistle bowl without any possibility of leakage.

Referring to the accompanying drawing forming a- -part hereof, and in whichA like numerals designate similar parts in the views of which:

Figure 1 is a vertical sectional view 4 through my improved valve,

Figure 2, a diagrammatic view 4of the connections of the valve and whistle, and

Figure 3, a diagrammatic view of a modied arrangement thereof.v

In the drawings; the numeral 10 designates the main valve body, 11 the cylinder and 12 the control valve casing. The body 10 has an inlet opening 13 which receives the vsteam from the usual steam dome 14 Athrough a pipe 15, and an exhaust opening 16 which isv connected by a pipe 17 to any suitable form of whistle 18 shown in Fig. 2. A valve seat 19 is formed in the body lOvand receives a relatively-small valve 20Vsecured on the end of a piston rod 21- which extends upward through a bearing'sleeve 22 into the cylinder 11. A large piston 23 is secured to the upper end of the rod 22 and controls the movement of the valve 20. Interposed between the lower side ofthe piston 23 and the base of the cylinder 11 is a' spring 24 which no-rmally tends to force the piston upward and open the valve as will be hereinafter more fully explained.

A small port 25 leads from the inlet opening 13 up through the body of the cylinder 11 and communicates with the cylinder at a point above the upward limit of movement of the piston 23. The steam entering through the inlet opening 13 will exert pressure beneath the valve 20, but the same pressure passes through the port 25 to the chambei-p11 above the piston 23 which has a much larger area than the valve 20, thereby compressing the spring 24 and maintaining the valve 20 closed. This valve will remain closed as long as the pressure is maintained in the chamber 11 above the iston 23.

The pressure in the cham er 11 is governed by a control valve which comprises a ball26 mounted in a tube 27 which communicates with the chamber 11', said ball being normally held against a seat 28 by means of the steam pressure and also a spring 29. The tube 27 with its ball valve is located within a chamber 30 formed by the easing 12 and a cover plate 31. A plunger 32 is slidably mounted in the cover plate 31 directly over the ball 26 and is normally held upward away from the ball by a spring 33 interposed between the top of the plate 31 and a head 34 forme-d on the plunger. The upward movement of the plunger 32 is limited by means ofv a pin 35 which strikes the under side of the plate 31.

In order to drain the chamber 3() and also cause a more rapid movement of the p1ston 23, a port 36 leads downward through the casing 12 and cylinder 11 and into a chamL -ber 37 which surrounds a venturi mounted inthe exhaust opening 16 of thevalve body` This venturi is provide-d with a central throat 38 through which the. major portion of the steam passes and a series of small openings 39 through which is siphoned the steam from the chamber 30. .In this way all of the steam is utilized in blowing the whistle as it is impossible for-any leakage of waste.

The operation is as follows: In Fig. 1 of the drawings the parts are in the' position assumed when under pressure. When it is desired to blow the whistle, pressure is exerted downward on the plunger 32' unseating the ball valve 26 which relieves the pressure in the chamber 11 allowing the spring 24 to force the piston 23 upward.

`This movement opens the valve 2O which seats itself against the under side of the bushing 22 and permits the steam to pass di rectly from the boiler to the whistle. The passage of the steamthrou h the venturi,

siphons the steam from the c amber 30 at a greater vspeed than it would ordinarily flow thereby creating'a partial vacuum 1n the my device without departing from the spirit v chamber 11 and causing a rapid movement of the piston 23 and valve 20.

In Fig. 3 of the drawings is shown a modified arrangement of the devicein which lthe control valve 26 is shown separated from the main valve cylinder 11 and connected thereto by a tube 40. The port 36 is also replaced by a tube which connects to the chamber 37. In this arrangement the control valve can be. mounted in a convenient locationv inside of the cab and the main valve parts may beplaced outside.

The device as here shown and described is operated by direct manual pressure on the head 34 of the plunger 32, but I wish to have it understood that other operating means as electric orY pneumatic means may be used instead if preferred. When the device is manually operated, the control valve would necessarily be located within reach of the operator, whereas, with electrical or pneumatic operation, the control Valve may e placed in any convenient location with the operators switch or other medium within easy reach,

It will be obvious to those skilled in the art, that various changes may be made in of my invention, and therefore I do not Wish to be limited to the exact structure described and shown, but only as indicated in thev appended claims.

Having thus fully described in said in-` desire tov vention, what I claim as new an secure by Letters Patent, is:

1. A quick acting fluid pressure control yalve comprising a main valve casing having an inlet and an exhaust port, a valve between said ports, an auxiliary casing detachably' connected to said main valve casing, a iston in said casing having a connection with said valve for controlling the same,

a passage through said main valve casing, a passage through said auxiliary valve casing, said passages forming communication between the inlet port and said casing at the remote vside of the piston, an annular chan- 'nel 1n one of said valve casings in communication with said passages to permit the passage of Huid therethrough in any relative position of rotation of the contiguous parts, a detachable closure for the outer end of said auxilia sure, a relie valve mounted in said chamber, a .manually controlled plunger for opening said relief valve, and a drainage passage age passage casing, a chamber in said clo.

and twenty-six.

forming communication between said chamber and exhaust port, substantially as set forth.

prising a main valve casing having an inlet and an exhaust port, a valve between said ports, an auxiliary casing detacliably connected to said main valve casing, a piston in said casing having a connection with said valve for controlling the same, a passage through said main valve casing, a passage through said auxiliary valve casing, said passages forming communication between the inlet port and said casing at the remote side of'the piston, a detachable closure .for the outer end of said auxiliary casing, a chamber in said closure, a relief valve mounted in said chamber, a manually controlled plunger for opening said reliefv valve, a venturi on the discharge side of the main valve, and a drainage passage forming communication between the said chamber and a region of low pressure in the venturi whereby passage of steam through the main valve and the venturi will create a reduced pressure inthe said passage and in the chamber above the piston, substantially as set forth.

3. A fluid pressure controlled valve comprising a main valve casing having an inlet and an exhaust port, a valve between said ports, an auxiliary casing detacliably connected to said main valve casing, a piston in said casing having a connection with said valve for controlling the same, a passage through said main valve casing, a passage through said auxiliary valve casing, said passages forming communication between the inlet port and said casing at the remote side of the piston, a detachable closure for the outer end of said auxiliary casing, a A

chamber in said closure, a relief valve mounted insaid chamber, means for operating said relief valve, a venturi on the discharge side of the main valve, anda drainforming communicationl between the said chamber and a region of low pressure in the venturi whereby passage of steam through the main valve and the venturi will create a reduced pressure in` the said passage and in the chamber above the piston, substantially as set forth. n

In witness whereof, I have lhereunto set myhand at Indianapolis, Indiana, this 30th day of November, A. D. nineteen hundred