US1329099A

US1329099A - Valve

Info

Publication number: US1329099A
Application number: US259106A
Authority: US
Inventors: Ira H Spencer
Original assignee: Spencer Turbine Co
Current assignee: Spencer Turbine Co
Priority date: 1918-10-21
Filing date: 1918-10-21
Publication date: 1920-01-27
Anticipated expiration: 1937-01-27

Description

I. H. SPENCER.

VALVE. APPLICATION FILED ocT.2I, l9l8.

.Zrrvenfar Patented J an. 27, 1920.

'UNTTED STATES PATENT OFFICE.

IRA H. SPENCER, OF WEST HARTFORD, CONNECTICUT, ASSIGNOR TO THE SPENCER TURBINE COMPANY, OF I-IAR'IFOR'D, CONNECTICUT, A CORPORATION OF CON- NEGTICUT.

VALVE.

Patented Jan. 27, 1920.

Application filed October 2]., 1918. Serial No. 259,106.

To all whom it may concern:

Be it known that 1, TBA H. SPENCER, a citizen of the United States, and a resident of Vest Hartford, in the county of Hart-- ford and State of Connecticut, have invented a new and Improved Valve, of which the following is a specification,

My invention relates to the class of valves to regulate and control flow of fluids through pipes and other passages, and an object of my invention, among others, is to provide a valve of this class that shall be automatic in action to maintain a predetermined condition as to flow of fluids through the passage controlled thereby.

One form of valve embodying my invention and in the constrtution and use of which the objects herein set out, as well as others, may be attained, is illustrated in the accompanying drawings, in which' Figure 1 is a view in central longitudinal section through a valve case and valve operating members embodying my invention, said case being shown as attached to the outlet of a compressor, a fragment of which is shown.

Fig. 2 is a view in section on plane denoted by dotted line 22 of Fig. 1 of my improved valve.

Fig. 3 is a side view of the valve lever retaining rack, said lever being cut in section on plane denoted by dotted line 3-3 of Fig. 1. I v

My improved valve may be employed in connection with conduits or passages for flow of fluids of various sorts. It is shown herein as applied to the outlet passage from a turbo-compressor, in connection with which I have found it to produce extremely satisfactory results. In the construction thus employed by me a case 5. preferably round when viewed in cross section, is made use of, this case having flanges 6 as a means for securing it, as by means of bolts or other fastenings, to an outlet tube 7 of the shell 8 of a turbo-compressor. A valve or damper 9, formed to closely fit the interior of the case 5, is secured to a valve spindle 1O rotatably mounted in a neck 11 extending from one side of the case 5. A rack supporting frame 12 is secured to the neck 11, in any suitable manner. as shown herein this frame comprising a collar 13, split on one side and secured in place as by means of a clamp screw 14 that firmly binds the collar to the neck. This frame alsocomprises a rack segment 15 supported on the outer ends of arms radiating from the collar 13, the edge of this segment being provided with valve holding teeth 16 to receive the edge of a valve lever 17 having an operating handle 18 at its outer end by means of which the valve may be manually operated.

In the operation of turbo-compressors of the class now under consideration and driven by an electric motor, it is of the utmost importance that the outlet shall be closed when the motor is being started as otherwise there is much danger, unless an abnormally large fuse be employed, of blowing the fuse, owing to the excessive load caused by the free flow of air through the outlet, should it be open. My improved valve eliminates such a possibility and when used in connection with a turbo-compressor it will automatically close the valve whenever the compressor ceases its operation or, during operation, reaches a point where its efiectiveness is reduced to a minimum extent.

To produce this result I employ a receiver 19, the interior of which is in communication, by means of a tube 20, with a chamber or passage for the air operated upon by the turbo-compressor, so that the condition of such air as to density will be communicated to and exist within the chamber in the receiver 19. A diaphragm Zl extends across the chamber in the receiver, dividing it into two compartments, this diaphragm being of a flexible character to respond to and be operated by changes in the conditions of the air within the receiver 19. A retaining pin 22 is secured to the diaphragm and projectsthrough a hub 23 on the under side of the receiver. the outer end of this pin engaging within a recess 24 in the upper side of the lever 17 The hub of the receiver is secured in any suitable manner to the upper end of the valve spindle. A spiral spring 25 has one end secured to the valve lever, or other part carried by the spindle 10, the other end of said spring being secured to the end of the neck 11, or other immovable part. The spring exerts a force to turn the spindle 10 and also a force to raise the lever 17. turning it on its pivot 26 by means of which it is pivotally secured to the spindle 10. The rack embodying the teeth 16 is inclined downwardly from that end at which the lever 17 rests when the valve is in its open position to the opposite end at which said lever is located when said valve is in its closed position.

In operation let it-be assumed that the turbo-compressor is running at full speed and that the valve is open, in which position the lever 17 will be engaged with the rack teeth 16 at the left hand side of the rack as shown in Fig. 3, and at the upper end of the rack as shown in Fig. 2. Under the conditions thus existing the pressure at the upper side of the diaphragm 21 in the chamber will cause it to be forced downward and the end of the pin 22 will engage the recess in the lever 17 and hold it in engagement with the teeth 16, thus compressing the spring 25. IVhen the pressure in the chamber at the upper side of the diaphragm 21 becomes reduced to a predetermined extent, as the compressor slows down in its operation, the pin 22 will gradually rise until it releases the lever 17. Ihe spring 25 will thus be permitted to expand lengthwise and force the lever 17 out of engagement with the rack teeth 16, the lever turning on its pivot 26. The spring 25, when the lever is in position with the valve open, is also under a torsional force so that as soon as the lever is released from the higher tooth of the rack the lever will be swung to one side, rotating the valve spindle 10 and closing the valve 9, in the structure as herein shown the lever being thus moved from left to right as shown in Fig. 3. The inclined position of the rack teeth as shown in Fig. 3 prevents the valve lever from sliding in engagement with the edges of the teeth in this movement, said lever being entirely free from the geeth after it disengages from the higher toot It will be readily observed that the lever may be placed in engagement with the teeth so that the valve 9 may be held in any position desired, and the automatic closing movement above described will take place when the valve is in any of such positions.

In accordance with the provisions of the patent statutes, I have described the principles of operation of my. invention, together with the device which I now consider to represent the best embodiment thereof; but I desire to have it understood that the deviceshown is only illustrative and that the invention may be carried out by other means.

I claim:

1. A valve case, a valve located in the case to control a fluid passage therein, a valve spindle, means to exert force on said spindle to move the valve in the case, a member to hold said spindle in one position, and means connected with said member to control its operation, said means being operable by pressure of fluid, the flow of which is controlled by said valve.

2. A valve case, a valve located in the case to control a fluid passage therein, a valve spindle, means to exert force on said spindle to move the valve in the case, a member to hold said spindle in one position, a retaining member to engage said holding member, and a diaphragm connected with said retaining member and connected for operation by pressure of fluid, the flow of which is controlled by said valve.

3. A valve case, a valve located in the case to control a fluid passage therein, a valve spindle, means to exert force on said spindle to move the valve in the case, a member to hold said valve spindle in one position, means to hold said member against movement, said means being out of the path of movement of said member after it is disengaged from said means, and means for automatically releasing said member. 4. A valve case, a valve located in the case to control a fluid passage therein, a valve spindle, means to exert force on said spindle to move the valve in the case, a member to hold said spindle in one position, a rack to receive said member, the teeth of said rack being inclined downwardly away fromthe path of movement of said memher in its operation to move the valve, and means for releasing said member.

5. A valve case, a valve located in the case to control a fluid passage therein, a valve spindle, means to exert force on said spindle to move it longitudinally and to rotate it, a member to hold the spindle in one position, and means connected with said member to operate it, said means being operable by pressure of fluid, the flow of which is controlled by said valve.

6. A valve case, a valve located in the case to control a fluid passage therein, a valve spindle, means to exert force on said spindle to rotate it, a member movably', connected with the spindle to hold it in predetermined positions, said member being connected with said force exerting means for movement thereby, and means operatively connected with said member and operable by pressure of fluid, the flow of which is controlled by said valve.

7. A valve case, a valve located in the case to control a fluid passage therein. a

valve spindle, a spiral spring surrounding said spindle and having one end connected to a stationary part and the opposite end connected with said spindle, a holding member pivotally connected with the spindle, means for retaining said holding member, and releasing means connected with said member, said releasing means being operable by pressure of fluid, the flow of which is controlled by said valve.

8. A valve case, a valve located in the case to control a fluid passage therein, mechanical means to eXert force on said valve to operate it, a member to hold said valve in one position, and means connected With said member to operate it, said means being operable by pressure of fluid, the flow of which is controlled by said valve.

9. A valve case, a pressure operated valve located in the case to control a fluid ms 10 sage therein, a member to hold said valve in one position, and means connected with said member to control its operation, said means being operable by pressure of fluid, the flow of Which is controlled by said valve.

IRA H. SPENCER.