US560550A - smith - Google Patents

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US560550A
US560550A US560550DA US560550A US 560550 A US560550 A US 560550A US 560550D A US560550D A US 560550DA US 560550 A US560550 A US 560550A
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valve
cylinders
pressure
inlet
cylinder
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/02—Spring characteristics, e.g. mechanical springs and mechanical adjusting means
    • B60G17/04—Spring characteristics, e.g. mechanical springs and mechanical adjusting means fluid spring characteristics
    • B60G17/052—Pneumatic spring characteristics
    • B60G17/0523—Regulating distributors or valves for pneumatic springs
    • B60G17/0525—Height adjusting or levelling valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/04—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves
    • F16K11/044—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves with movable valve members positioned between valve seats
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/86919—Sequentially closing and opening alternately seating flow controllers

Definitions

  • Myinvention relates to valves, an d particularly to balanced piston-valves, the object in view being to provide a simple and eflicient form of valve in which the valve members are adapted to be closed by the pressure of the fluid, the pressure being communicated to the outlet-valve member in either position of the inlet-valve member.
  • Figure 1 is a section of a valve constructed in accordance with my i'nvention, both valve members being shown seated.
  • Fig. 2 is a similar view showing the inlet-valve open or unseated.
  • Fig. 3 is a horizontal section on the plane indicated by the line 3 3 of Fig. 1.
  • Fig. 4 is a detail View of the cap forming one of the equalizing-chambers detached.
  • valve-casing 1 Formed in the valve-casing 1 are the parallel bores or cylinders 2 and 3, with which communicate, respectively, the inlet and outlet ports 4c and 5.
  • the cylinder-port 6 is arranged in the wall or partition between said bores or cylinders and communicates with the latter by means of ports 7 and 8, respectively.
  • valve-seat 9 Arranged in each bore or cylinder is avalveseat 9, the seat in the inlet bore or cylinder 2 being arranged between the planes of the inlet-port 4 and communicating-port 7, and the seat in the outlet bore or cylinder being located between ⁇ the communicating-port 8 and the outlet-port 5.
  • said valve-seats are threaded in the bores or cylinders; but it is obvious that they may be secured in place in any other suitable manner to provide for their removal Serial No. 554,359. (No model.)
  • the inlet and outlet valve members 11 and 12 are carried by the stems 13 and 14, which are arranged axially in the bores orcylinders, compressible packing 15 being secured in contact with the face of each valve member by means of a compressing disk or nut 1G.
  • the bores or cylinders are preferably enlarged, as shown at 17, contiguous to each valve-seat to provide space for the operation of the valve member, and the portions of the valve members remote from their faces are reduced, as shown at 18, to operate in the reduced portions 19 of the bores or cylinders, said reduced portions being l'itted with caps 20,Which form equalizing-chambers 21.
  • These reduced portions 18 of the valve members fit in the equalizing-chambers and are provided with packing-rings 22 of compressible material, heldin place by means of disks 23 and nuts 24:.
  • the equaliZing-chambers are in communication with each other through the connecting-channel 25, which is formed in the partition or wall interposed between the bores or cylinders, the cylindrical inclosed portions of the caps 20 having openings 2,6, which communicate with said channel at its extremities.
  • the stem of the inlet-valve member 11 is provided with an axial bore' or channel 27, extending from a point below the valve member to the upper extremity, and therefore communicating at its opposite ends with the main portion of the bore or cylinder and the equalizing-chamber, and therefore the pressure of the fluid contained in the main portion of the bore or cylinder is communicated through the axial channel of the stem to the equalizing chamber above the inlet -valve member to balance the pressure upon opposite sides of the valve member, and this pressure in the equalizing-chamber of the inletvalve member is communicated through the connecting channel 25 to the equalizingchamber of the outlet-valve member, whereby pressure is exerted upon the rear side or the piston extension of the outlet-valve.
  • the pressure upon opposite sides of both inlet and outlet valve members is equalized.
  • the plun gers by reason of the constant pressure thereon, operate to close and hold the valve members seated, whereby when it is necessary to unseat a valve to supply fiuid to the cylinder or exhaust therefrom it is necessary to produce the necessary motion of the valve member by mechanical means, such as an operating-lever 30, which I have shown fulcrumed at 3l and provided with bearingpoints 32 and 33 to engage the exposed extremities of the valve-stems. It is unnecessary to connect the operating-lever with the valve-stems, for the reason that as soon as the valve members are released by the removal of positive pressure against their stems said valve members will be closed by the pressure of the Huid.
  • both valves cannot be open simultaneously, for the reason that pressure must be removed from one valve-stem before it can be applied to the other, and as soon as the pressure is removed the valve member is seated by Huid-pressure.
  • valve may be applied to use in connection with steam, hydraulic, pneumatic, and other cylinders, or mechanisms employing ⁇ fluidpressure of different classes, and that various changes in the form, proportion, and the minor details of construction may be resorted to without departing from the spirit or sacrificing any of the advantages of this invention.
  • a valve having a casing provided with inlet and outlet cylinders respectively having inlet and outlet ports and communicating with a cylinder-port, valve-seats arranged between the planes of the ports communicating with the cylinders, equalizing-ehambers permanently exposed to cylinder-pressure, and valve members arranged in the cylinders and having their rear sides exposed in the equalizing chambers, whereby the valves when released are seated by the said pressure in the equalizing-ehambers, substantially as specified.
  • a valve having inlet and outlet cylinders provided, respectively, with inlet an d outlet ports and communicating With a cylinder-port, seats arranged in the cylinders bctween the planes of the ports communicating therewith,valve members arranged in the cylinders and having piston extensions operating in equalizing-chambers which are respectively in communication with the cylinders and exposed to cylinder-pressiue, the stem of the valve member operating in the inletcylinder being bored to form a channel connecting the body portion of the cylinder with the communicating eqnalizing-chamber, and plungers carried respectively by the stems of the valve members and exposed to a constantpressure of fluid in the body portions of thc cylinders, substantially as specified.
  • a valve having inlet and outlet cylinders provided respectively with inlet and outlet ports and communicating with a cylinderport, caps removably fitted in the extremities of the cylinders to form equalizing-ehambers exposed to cylinder-pressure, valve members arranged respectively in the cylinders and having piston extensions fitted in the equalizingchambers, means for communicating pressure from the inlet-port to the equalizing-ehamber at the end of the inlet-cylinder, and plungers connected to the stems of the valve members and exposed to a constant pressure of fluid in the cylinders, substantially as specified.

Description

J. A.. SMITH. BALANGBD PISTONI VALVE.
2 Sheets-Sheet 1.
(No Model.)
,550. Patented May 19, 1896.
HIHII (No Model.) 2 Sheets--Sheet` 2.
' J. A. SMITH. B-ALANGED PISTONVALVE.
No. 560,550. I Patented May 19, 1896.
www www@ IWII AN DRKW lGRAHAM. FNUTOUTIIUWASMNGTON. DQ,
UNITED vSTATES PATENT OFFICE.
JOHN A. SMITH, OF JOHNSTOWN, PENNSYLVANIA, ASSIGNOR OF TVO-THIRDS TO JAMES HART AND ABRAHAM WILKINSON, OF SAME PLACE.
BALANCED PISTON-VALVE.
SPECIFICATION forming part ofV Letters Patent No, 560,550, dated May 19, 189e.
Application led 511116 28, 1895.
T0 all whom, t may concern:
Be it known that I, JOHN A. SMITH, a citizen of the United States, residing at Johnstown, in the county of Cambria and State of Pennsylvania, have invented a new and useful Balanced Piston-Valve, of which the following is a speciiication.
Myinvention relates to valves, an d particularly to balanced piston-valves, the object in view being to provide a simple and eflicient form of valve in which the valve members are adapted to be closed by the pressure of the fluid, the pressure being communicated to the outlet-valve member in either position of the inlet-valve member.
Further objects and advantages of this invention will appear in the following description, and the novel features thereof will be particularly pointed out in the appended claims.
In the drawings, Figure 1 is a section of a valve constructed in accordance with my i'nvention, both valve members being shown seated. Fig. 2 is a similar view showing the inlet-valve open or unseated. Fig. 3 is a horizontal section on the plane indicated by the line 3 3 of Fig. 1. Fig. 4 is a detail View of the cap forming one of the equalizing-chambers detached.
Similar numerals of reference indicate corresponding parts in all the igures of the drawings.
Formed in the valve-casing 1 are the parallel bores or cylinders 2 and 3, with which communicate, respectively, the inlet and outlet ports 4c and 5. The cylinder-port 6 is arranged in the wall or partition between said bores or cylinders and communicates with the latter by means of ports 7 and 8, respectively. v
Arranged in each bore or cylinder is avalveseat 9, the seat in the inlet bore or cylinder 2 being arranged between the planes of the inlet-port 4 and communicating-port 7, and the seat in the outlet bore or cylinder being located between` the communicating-port 8 and the outlet-port 5. In the construction illustrated said valve-seats are threaded in the bores or cylinders; but it is obvious that they may be secured in place in any other suitable manner to provide for their removal Serial No. 554,359. (No model.)
when it is necessary that they should be replaced or repaired.
The inlet and outlet valve members 11 and 12 are carried by the stems 13 and 14, which are arranged axially in the bores orcylinders, compressible packing 15 being secured in contact with the face of each valve member by means of a compressing disk or nut 1G. The bores or cylinders are preferably enlarged, as shown at 17, contiguous to each valve-seat to provide space for the operation of the valve member, and the portions of the valve members remote from their faces are reduced, as shown at 18, to operate in the reduced portions 19 of the bores or cylinders, said reduced portions being l'itted with caps 20,Which form equalizing-chambers 21. These reduced portions 18 of the valve members fit in the equalizing-chambers and are provided with packing-rings 22 of compressible material, heldin place by means of disks 23 and nuts 24:.
The equaliZing-chambers are in communication with each other through the connecting-channel 25, which is formed in the partition or wall interposed between the bores or cylinders, the cylindrical inclosed portions of the caps 20 having openings 2,6, which communicate with said channel at its extremities.
The stem of the inlet-valve member 11 is provided with an axial bore' or channel 27, extending from a point below the valve member to the upper extremity, and therefore communicating at its opposite ends with the main portion of the bore or cylinder and the equalizing-chamber, and therefore the pressure of the fluid contained in the main portion of the bore or cylinder is communicated through the axial channel of the stem to the equalizing chamber above the inlet -valve member to balance the pressure upon opposite sides of the valve member, and this pressure in the equalizing-chamber of the inletvalve member is communicated through the connecting channel 25 to the equalizingchamber of the outlet-valve member, whereby pressure is exerted upon the rear side or the piston extension of the outlet-valve. Hence when there is pressure in the body portion of the outlet-valve-member bore or cylinder, caused by pressure in the cylinder IOO with which the port 6 communicates, the pressure upon opposite sides of both inlet and outlet valve members is equalized.
Secured to the stems of the valve members and operating in the bores or cylinders upon the opposite sides of' the valve member from said equalizing-chambers are plungers 28,also provided with packing-rin gs 29, and therefore, inasmuch as these plungers are exposed at all times to the pressure in the body portions of the bores or cylinders, the pressure of the fluid will tend to close or seat the valve members if they are unseated or hold them seated :if they are in their normal positions. In other words, the plun gers, by reason of the constant pressure thereon, operate to close and hold the valve members seated, whereby when it is necessary to unseat a valve to supply fiuid to the cylinder or exhaust therefrom it is necessary to produce the necessary motion of the valve member by mechanical means, such as an operating-lever 30, which I have shown fulcrumed at 3l and provided with bearingpoints 32 and 33 to engage the exposed extremities of the valve-stems. It is unnecessary to connect the operating-lever with the valve-stems, for the reason that as soon as the valve members are released by the removal of positive pressure against their stems said valve members will be closed by the pressure of the Huid. By the construction above described both valves cannot be open simultaneously, for the reason that pressure must be removed from one valve-stem before it can be applied to the other, and as soon as the pressure is removed the valve member is seated by Huid-pressure.
It will be understood that the improved valve may be applied to use in connection with steam, hydraulic, pneumatic, and other cylinders, or mechanisms employing` fluidpressure of different classes, and that various changes in the form, proportion, and the minor details of construction may be resorted to without departing from the spirit or sacrificing any of the advantages of this invention.
Having described my invention, what I claim is* 1. A valve having a casing provided with inlet and outlet cylinders respectively having inlet and outlet ports and communicating with a cylinder-port, valve-seats arranged between the planes of the ports communicating with the cylinders, equalizing-ehambers permanently exposed to cylinder-pressure, and valve members arranged in the cylinders and having their rear sides exposed in the equalizing chambers, whereby the valves when released are seated by the said pressure in the equalizing-ehambers, substantially as specified.
2. A valve having inlet and outlet cylinders provided, respectively, with inlet an d outlet ports and communicating With a cylinder-port, seats arranged in the cylinders bctween the planes of the ports communicating therewith,valve members arranged in the cylinders and having piston extensions operating in equalizing-chambers which are respectively in communication with the cylinders and exposed to cylinder-pressiue, the stem of the valve member operating in the inletcylinder being bored to form a channel connecting the body portion of the cylinder with the communicating eqnalizing-chamber, and plungers carried respectively by the stems of the valve members and exposed to a constantpressure of fluid in the body portions of thc cylinders, substantially as specified.
3. A valve having inlet and outlet cylinders provided respectively with inlet and outlet ports and communicating with a cylinderport, caps removably fitted in the extremities of the cylinders to form equalizing-ehambers exposed to cylinder-pressure, valve members arranged respectively in the cylinders and having piston extensions fitted in the equalizingchambers, means for communicating pressure from the inlet-port to the equalizing-ehamber at the end of the inlet-cylinder, and plungers connected to the stems of the valve members and exposed to a constant pressure of fluid in the cylinders, substantially as specified.
In testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence of two witnesses.
JOI-1N A. SMITH. lVitnesses M. B. STEPHENS, FRANK E. REEsn.
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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2437723A (en) * 1944-12-04 1948-03-16 Adel Prec Products Corp Poppet valve
US2692114A (en) * 1951-03-06 1954-10-19 Air Reduction Valve
US2752862A (en) * 1951-04-19 1956-07-03 Boakes James Walter Valve operating system
US2783020A (en) * 1953-10-14 1957-02-26 Walter S Kleczek High-pressure, high capacity pneumatic valve
US2821927A (en) * 1952-07-15 1958-02-04 Belton A Copp Control mechanism for power fluid supply
US2897836A (en) * 1956-06-13 1959-08-04 Us Industries Inc Balanced valve
US6145541A (en) * 1998-01-05 2000-11-14 Tgk Co. Ltd. Four-way selector valve
US20020117128A1 (en) * 2001-02-28 2002-08-29 Yury Shkolnikov Variable volume valve for a combustion powered tool
US6655570B2 (en) 2001-05-04 2003-12-02 Illinois Tool Works Inc. Constant volume valve for a combustion powered tool

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2437723A (en) * 1944-12-04 1948-03-16 Adel Prec Products Corp Poppet valve
US2692114A (en) * 1951-03-06 1954-10-19 Air Reduction Valve
US2752862A (en) * 1951-04-19 1956-07-03 Boakes James Walter Valve operating system
US2821927A (en) * 1952-07-15 1958-02-04 Belton A Copp Control mechanism for power fluid supply
US2783020A (en) * 1953-10-14 1957-02-26 Walter S Kleczek High-pressure, high capacity pneumatic valve
US2897836A (en) * 1956-06-13 1959-08-04 Us Industries Inc Balanced valve
US6145541A (en) * 1998-01-05 2000-11-14 Tgk Co. Ltd. Four-way selector valve
US20020117128A1 (en) * 2001-02-28 2002-08-29 Yury Shkolnikov Variable volume valve for a combustion powered tool
US7051686B2 (en) 2001-02-28 2006-05-30 Illinios Tool Works Inc. Variable volume valve for a combustion powered tool
US6655570B2 (en) 2001-05-04 2003-12-02 Illinois Tool Works Inc. Constant volume valve for a combustion powered tool

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