US1487038A

US1487038A - Device for controlling valve movements in pressure apparatus

Info

Publication number: US1487038A
Application number: US349633A
Authority: US
Inventors: Ira H Spencer
Original assignee: Spencer Turbine Co
Current assignee: Spencer Turbine Co
Priority date: 1920-01-05
Filing date: 1920-01-05
Publication date: 1924-03-18
Anticipated expiration: 1941-03-18

Description

March 18 1924. w 1,487,038

' l. H. SPENCER DEVICE FOR CONTROLLING VALVE MOVEMENTS IN PRESSURE APPARATUS File'd Jan. 5. 1920 INVENTOR.

BY I TTORNEY.

Patented Friar. l8, lQZd.

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Application filed January 5, 1920. Serial No. 349,633.

Hartford, in the county of Hartford and State of Connecticut, have invented a new and Improved Device for Controlling Valve Movements in Pressure Apparatus, of which thefollowing is a specification,

My invention relates to the class of devices above named, and is of particular value when used in connection with pneumatic apparatus, and an object of my'invention, among others, is to provide a device of this class that shall be very sensitive in itsop- 'eration and therefore extremely effectual in its method of use. V I I One form of device embodying my in vention and in the construction and use of which the objects herein set out, as well as others, may be attained, is illustrated in the accompanying drawings, in which The figure is a view in longitudinal sec tion through a casing containing a valve and my improved controlling device therefor;

While my improved controllin device is not limited in its use to any specific appara'-* tus, yet as I have found it to produce ex tremely satisfactory results when used in connection with valves for supplying air topneumatic instruments, a portion of such an apparatus has been selected by me for the purpose of illustrating my invention in the drawings herein, in which drawings the nu} meral 3 indicates the shell of a blower, round in cross section, and that may be supplied with i any suitable means for creating air flow outwardly through a casing-4 that is connected to the shell in any suitable manner, as by a connection 5, said casing being preferably round in cross section and being interposed in a length of conduit for conveying the air to the pneumatic instruments in connection with which it is used and in an upward direction in the device as shown herein.

A valve comprising two flap members 6 mounted on a pivot 7 is located within the casing 4, the edges of said members being beveled and shapedto accurately fit theinner surface of the casing so that the flow of air, when the valve is closed, shall be stop ped. Valve operating arms 8 are each pivotally connected'to each of the valve mem here, said arms at their ends opposite the valves being connected by a common pivot air current as littlejas'possible.

to the piston rod- 9 of a piston '10 mounted in a housing'll 'suspended by supports 12' projecting from the inner wall of the casing 4:. v

A passage iii-communicates through a port-1e with thechamber on one side of the piston 10 and through a port 15 with thechamber on the other side of'the piston 10, the size of the port l5-being regulatedas by a regulating valve 16 at the end of a va'lve operating rod 17.- I r i In order toobstruct to a minimum degree the flow of air through the casing 4 the supports 12 will consist'of a minimum num ber, three being contemplated in the structure herein shown, and they'will be of a minimum thickness, and the inner end of the housing 11 isigraduallyreduced in'size to a point, thisinorder to-disturb oraffect the It will be noted that my improved controllingidevice is so arranged and attached to the valves and the latter areso mounted that there is practically no resistance'to their opening movement, they being susceptible to theslightest pressure tending to do this. On the-contrary however,should any sudden force bie-'app'lied to close the valve," this force will be successfully resisted and the valves can'ibe closedonly by gradual pressure applied with a predetermined force depending upon the size of the opening,

constituted by the port 15 and, therefore,

employed in the housing from one to the opposite side of the piston 10. v I

In order that there'may be a minimum amount of resistance tothe movement of the valves I so construct the parts that no pack-' ing about the piston rod at its opening through the end of the housing is required the freedom of movement of liquid that is and air may, therefore, readily pass through u said opening; To do this I suspend the housing 11 in a vertical position with the hole for the piston rod opening upwardly. In operation, upward movement of the piston will immediately tend to create a partial vacuum thereunder that willcause the liquid in the housing to pass from the upper side of the piston to its under side and there is, therefore, no tendency for the liquidto escape from within the housing, through the opening for the piston rod therein, and V the latter may therefore be made of such size as to permit it to have the greatest freedom of movement. It will, therefore, be seen that the valve will readily respond to any pressure that may be exerted against it and will open just enough to freely permit the passage oif such volume of air as, under any of the various conditions, may have been forced into the structure containing the valves, and by reason of the fact that the controller will prevent the position of the valves being quickly changed to reduce the size of the opening around the valve the forward movement of the air at a uniform rate is maintained and the current is, therefore, prevented from responding. to conditions favorable to uneven movement thereof and that might otherwise enable it to get in step with those conditions and thereby create a surging of such currents.

In accordance with the provisions of the patent statutes, I have describedthe principles of operation of my invention, together with the device which I now consider to rep resent the best embodiment thereof; but I desire to have it understood that the device shown is only illustrative, and that the inthrough said casing, a piston within said housing, a piston rod secured to said piston, a valve mounted on a pivot extending transversely to the direction of movement of said piston, means for varying the degree of equalizing movement of the pressure medium to opposite sides of the piston, and a pivotal connection between said rod and valve.

2. A. valve casing, a housing located in said casing, a piston within saidhousing, a piston rod secured to said piston, a valve mounted on a pivot extendingtransversely to the direction of movement of said piston,

and an arm pivotally connected to said valve and also pivotally connected to said rod.

3. A valve casing, a housing located in said casing, piston within said housing, a piston rod secured to said piston, a valve comprising two pivotally mounted members, and a pivotal .connection between the valves and piston.

A valve casing, a housing located in said casing, a piston within said housing, a piston rod secured to said piston, a valve comprising two members mounted on a common pivot, and a pivotal connection between said valve members and said piston.

5. A valve casing, a housing. located in said casing, a piston within said housing, a piston rod secured to sa1d piston, a valve comprislng two pivotally mounted members,

and arms both mounted on a common pivot on said rod and each extendingand being:

pivotally connected to a member of said valve.

6. A valve casing, a housing located in said casing, a piston within said housing, a piston rod secured to said piston, a valve comprising two members mounted on a common pivot located substantially in a line lengthwise of said rod, and two arms both attached to a single pivot on said rod and extending in divergent directions therefrom on opposite sides of the valve pivot, said arms being each .pivotally connected to one of said valve members.

7. A valve casing, a housing located in said casing in the path of iiow of fluid tirough said casing, a piston within said housing, piston rod extending from said piston, a valve mounted on a pivot extending transversely to the direction oi movement of said-piston, a pivotal connection between said rod and valve, means within said housing. to control the movement of the piston and means for varying the-degree of action of said controlling means.

8. A valve casing, a housing located in said casing in the path of flow or" fluid through said. casing, apiston within said housing, means for controlling iiow of liquid from one side of the piston to the opposite side thereof, a piston rod extending from the piston,a valve mounted on a pivot extending transversely to the direction of movement of said piston, a pivotal connection be tween said rod and valve,and means within said housing to control the movement of the piston.

9. A valve casing, a housing located in said casing and closed to substantial influence of pressure within the casing, a piston within said housing, a piston rod extending fromthe piston, said housing having a passage extending trom one side of the piston to the opposite side thereof, a valve mounted on a pivot extending. transversely'to the direction of movement of said piston, a pivotal connection between said rod and valve, and means within said housing to control flow of liquidthrough said passage to control i movement of the piston.

10. A valve casing, a housing located in said casing, said housing being closed to substantial influence of pressure within the casing, a piston within said housing, means for variably controlling the flow of liquid from one side of the piston to the opposite side thereof, a piston rod extending from said piston, a valve mounted on a pivot extending transversely to the direction of movement of said piston, a pivotal connection between said rod and valve, and means within said housing to control movement of the piston.

11. A valve casing, a housing located in said casing and closed'to substantial influence of pressure within the casing, a piston within said housing, a piston rod extending from the piston, said housing having a passage extending from one side of the piston to the opposite side thereof, means for varying the size of said passage, a valve mounted on a pivot extending transversely to the di: rection of movement ofsaid piston, a pivotal connection between said rod and valve, and means within said housing to control movement of the piston. I

12. A valve casing, a housing located in said casing, arms extending inwardly from the wall of said casing to support said hous ing, a piston within said housing, a piston 7 rod extending from said piston, a valve mounted on a pivot extending transversely to the direction of movement of said piston, and a pivotal connection between said rod and valve.

13. A valve casing, a housing located in said casing and having a hole in the upper piston.

end thereof, a piston within said housing,

a piston rod extending from the piston through the hole in the top of the caslng,

said hole being closed to substantial infiu' to saidcasing, a piston within said housing,

a piston rod attached to the piston, a valve,

comprising two pivotally mounted members,

and a connection between the valve and IRA H. SPENCER.