US938574A

US938574A - Automatically-closing valve.

Info

Publication number: US938574A
Authority: US
Inventors: Frederick H Goldsmith
Original assignee: Individual
Current assignee: Individual
Priority date: 1908-03-06
Filing date: 1908-03-06
Publication date: 1909-11-02
Anticipated expiration: 1926-11-02

Description

F. H. GOLDSMITH.

AUTOMATICALLY CLOSING VALVE.

APPLICATION FILED MAR.6.1908. 938,574, Patented Nov. 2, 1909.

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FREDERICK H. GOLDSMITH, OF KANSAS CITY, MISSOURI.

AUTOMATICALLY-CLOSING VALVE.

Specification of Letters Patent.

Patented Nov. 2, 1909.

Application filed March 'e, 1908. Serial No. 419,515.

To all whom it may concern:

Be it known that I, FREDERICK H. GoLD- siurrrr, a citizen of the United States, residmg at Kansas City, in the county of Jackson and State of Missouri, have invented certain new and useful Improvements in Automatically Closing Valves, of which the following is arspecification.

My invention relates to improvements in automatically closin valves.

The object of my mvention is to provide means for automatically closing valves contained in conductors carrying fluid under pressure when such conductors are accidentally broken or burst.

My invention is particularly adapted for use in steam heating systems in which piping is employed to convey steam from a boiler to a radiator.

In a ry ng my i ve on n o elfe t h fluid from the vessel containing the uid, h a m, g or a liquid uc a w t is employed to c ose the valve controlling the flow of fluid through the discharge pipe connected with said vessel, whenever this dischar e pipe bursts or is otherwise broken.

In t e accompanying drawings which illustrate my invention, Figure 1 isa side elevation of the apparatus, a portion of a boiler and a portion of a radiator hem shown. Fig. 2 is a central vertical sections view of a portion of the apparatus shown in Fig. 1. F 1g. 3 is an elevation of a modified form of shut-off valve to be used in. the conductor connecting the boiler with the cylinder in lieu of the ones shown in Figs. 1 and 2. Fig. 4 is a vertical sectional view of the valve shown in Fig.3 disposed so as to connect the boiler and cylinder. Fig. 5 is a view similar to Fig. 4, with the valve shown in a position closing the passage between the boiler and cylinder.

Similar characters of reference denote similar parts.

1 denotes a boiler, 2 a radiator and a (lischar e conductor connecting the boiler and PM iator. Included in said conductor 3 art thereof, is a fitting 4 which is provi ed with a vertical hole 5 which forms a rtion of the passa e of the conductor 3-an which is intersect at right angles by a circular hole 6 which extends horizontally artially through the fitting 4, the outer end of said hole being closed by a head 7 havin a central horizontal hole in which is slide ly mounted a horizontal rod 8 having secured at one end a piston 9 and at the other end a cylindrical valve 10, which is fitted in the hole 6 and slidable horizon tally therein to and from a position closing the passagef) of conductor 3. The piston 9 1s reciprocative in a cylinder 11 having at one end a central horizontal hole in which a cylindrical, horizontal central extension 12 of. the piston 9, is reciprocatively mounted. The opposite end of the cylinder 11 has secured to it a head 13 provided-with a central horizontal hole in which is reciprocatively mounted therod 8. The two heads of the cylinder '11 and the head 7 are each provided at their outer ends with central screw threaded recesses in which are fitted the screw threaded collars 14, the inner ends of which bear upon stufling 'material 15, encircling the rod 8 and extension 12. For

the purpose of withdrawing water from the cylinder 11 the under side thereof is provided with two vertical screw threaded holes in which are secured the upper ends of two

conductors

16 and 17 which contain respectively

valves

18 and 19. Each of said valves is provided with a crank arm 20, said crank arms being connected pivotally to a horizontal rod 21. By swinging the rod 21 horizontally to and fro, the valves18 and 19 may be simultaneously opened and simultaneously closed.

' 22 denotes a conductor, one end of which is connected" to the vessel or boiler 1, the

other end being connected to the cylinder 11 at one end of the piston 9.

23 denotes a conductor, one end-of which is connected to the cylinder 11 at the opposite end of the 'piston 9, the opposite end i being connected to the discharge conductor 3 at a point adjacent to the radiator 2. It

'will be noted that the extension12 of the i piston 9 is of reater diameter thanthe rod ,7 12, therefore te end of the piston 9, from which extends the extension 12, will have smaller area subjected to fluid pressure, than the other end of the piston 9. A by pass or conductor 24 has one end connected to the discharge conductor 3 intermediate the; valve 10 andboiler 1. The other end of the con-- ductor 24' is connected to the chamber or hole 6 at the inner end of said hole or chamber. A shut-oil valve is located in the conductor 22, this valve may be of the ordina globe valve type, such as is represent in Fig. 2 by the numeral 25.

26 denotes a draw-off cock mounted in a hole 27 communicating with the lower side and right end, as viewed in Fig. 2, of the hole 6.

In operating my invention the valve 25 is closed and the

valves

18, 19 and 26 are then opened. The steam or other fluid from the boiler or vessel 1 fills the by-pass 24 and the chamber 6, at the left end of the valve 10, as shown in Fig. 2. The pressure of the fluid in-the by-pass 21 is the same as in the boiler 1 so that. when the valve 25 is closed the valve 10 will be moved to the right so as to open the. conductor 3. At the same time the rod 8 will force the piston 9 to the position shown in dotted lines in Fig. 2. The conductor 3 being opened the steam or fluid will pass to the radiator 2 and will also pass through the conductor 23 into the cylinder 11. The

valves

18, 19 and 26 may now be closed and the valve 25 opened. When the valve 25. is opened the steam will ass through the conductor 22 from the oiler 1 into the cylinder 11.- Inasmuch as the area of the end of the piston 9 which is adjacent to the conductor 22, is less than the opposite end of the piston, the piston will remain in the position indicated in dotted lines in Fig. 2 unless the pressure in the discharge pipe 3 is in any manner reduced below a pre-determined amount relative to the pressure in the boiler 1. If the conductor 3 should break or burst at any place intermediate the valve 10 and the radiator 2, the fluid in the cylinder 11 at the end connected to conductor 23 would pass from the cylinder through said conductor and when the pressure became sufiiciently low at that end of the piston 9 the pressure of the fluid in the cylinder'at the'opposite end of the piston 9 will force the piston 9, rod 8 and valve 10 to the positions shown in solid lines in Fig. 2. In this position the valve 10 will close the conductor 3, thus shutting off the steam or fluid from the broken conductor so as to permit the same to be readily re aired.

When the orm of valve shown in Figs. 3, 4 and 5 is employed in the conductor 22, it will be unnecessary to open the

valves

18 and 19 when steam is to be admitted to the radiator 2. The valveshown in Figs. 3, 4 and 5 comprises a casing 28 having a cylindrical-valve .29 rotatively mounted therein, said valve having a transverse passage 30, whichliglintersected by a passage'31 disposed at right angles thereto. When the valve 29 is positioned as shown in Fig. 4, the passage 30 is in alinement with the passage of conductor 22.

In this position the steam will ass from the boiler 1 into the cylinder 11.

hen the valve is positioned as shown in Fig. 5 the passage 31 will aline with the conductor 22, while the passage 30 will register with a peripheral hole 32 in the valve casing 28. In this position of the valve comosasm I munication between the boiler and cylinder will be cut off but air or steam may pass from. the cylinder to the atmosphere through conductor 22 and passages 31 and 30. "After a break in the conductor 3 has been repaired it is but necessary to close the valve 25. The steam through the by-pass 24 will then force the valve 10, in-the manner already described, to the open position.

Various modifications of my invention within the scope of the appended claims, may be made without departing from its spirit.

Having thus described my invention, what I claim and desire to secure by Letters Patent, is z- 1. The combination with a vessel adapted to contain fluid under pressure, of a discharge conductor connected therewith, a valve reciprocative to and from a position closing said conductor, means by which fluid from said vessel is applied at one end of said valve to force it to the open position, a cylinder, a piston reciprocative in said cylinder, a piston rod to which said valve and piston are secured, and means by which fluid is conveyed to said 0 linder from said discharge conductor ant from said vessel and simultaneously applied at both ends of said piston.

2. The combination with a vessel adapted to contain fluid under pressure, of a discharge conductor connected therewith, a reciprocative valve for closing said conductor, means by which fluid from said vessel is applied to said valve in a direction tending to 'force said valve to the open position, a cvlinder, a piston reciprocative in said cylin er and movable with said valve, opposite ends of said piston having different areas subjected to fluid pressure, a piston rod to which said valve and piston are secured, and means by which fluid is conveyed from said discharge conductor and from said vessel and discharged in said cylinder at opposite ends of said piston.

3. The combination with a vessel adapted to contain fluid under pressure, of a discharge conductor connected therewith, a valve for closing said conductor, means by which, when said valve is closed, fluid at a pressure of that contained in the vessel, is applied to the valve in a manner tending to force t-he'same to the open position, a cy1- inder, a piston reciprocating 1n the c linder, a piston rod to whlch said valve an piston are secured, conductors connected respec- 'tively to the dischar e conductor and to said vessel and connects respectively to said cylinder at opposite ends of said piston, and a shut-oil" valve in the conductor connecting the cylinder and vessel.

4. The combination with a vessel for containing fluid under pressure, of a discharge conductor connected therewith, a valve for intermediate said inlet 0 nings, a piston rod to which said valve an iston are secured,

- means for applyin to said valve a constant pressure from sai vessel tending. to force said valve to the open position, a conductor connected at one end with said cylinder at one of said inlet openin s and at the other end connected to said discharge conductor,' a conductor connected to said cylinder at the other inlet opening and connected to said vessel, a shut-off valve in the. last named conductor, two valves controlling respectively the two discharge openings of said cylmder, and means for simultaneously operating said two -valves.

In testimony whereof I have signed my name to this specification in presence of two subscribing witnesses.

FREDERICK H. GOLDSMITH. Witnesses:

E, B. Hones,

WARREN D. HOUSE.