US123174A - Improvement in valves for steam-engines - Google Patents
Improvement in valves for steam-engines Download PDFInfo
- Publication number
- US123174A US123174A US123174DA US123174A US 123174 A US123174 A US 123174A US 123174D A US123174D A US 123174DA US 123174 A US123174 A US 123174A
- Authority
- US
- United States
- Prior art keywords
- steam
- valve
- cylinder
- passages
- improvement
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000000875 corresponding Effects 0.000 description 4
- 238000009740 moulding (composite fabrication) Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 230000001105 regulatory Effects 0.000 description 2
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/0401—Valve members; Fluid interconnections therefor
- F15B13/0402—Valve members; Fluid interconnections therefor for linearly sliding valves, e.g. spool valves
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- 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
- Y10T137/86493—Multi-way valve unit
- Y10T137/86574—Supply and exhaust
- Y10T137/86582—Pilot-actuated
- Y10T137/86606—Common to plural valve motor chambers
Definitions
- PatntedJan.30 1872.
- JOSEPH W. HOPKINS OF NEW YORK, N. Y., ASSIGNOR TO HIMSELF, ALBERT G. BEARUP, AND. PATRICK OARRAHER, JR, OF SAME PLACE.
- This invention consists in the combination, within a valve or steam-chest, of an oscillating abutment and a slide-valve with attached cylinder, the abutment being arranged within the cylinder, and being provided with inlets and outlets for operation in concert with passages in the slide-valve and with the ports or passages of the engine-cylinder so that, on turning the abutment at intervals alternately in a reverse direction, steam is admitted to and exhausted from opposite ends alternately of the valve-cylinder to throw the valve.
- Said improvement is applicable to steam-pumps as well as to steam-engines.
- A represents the valve or steam-chest of an engine, and at its steam-inlet.
- B is the valveseat, having an exhaust-passage, b, and the usual ports or passages c 0 leading to opposite ends of the engine-cylinder.
- O is the slidevalve, arranged to work over and controlsaid passages.
- This valve is of a D-shaped construction, being provided with a central exhaust-cavity, d, and end steam-inlets or passages e 0.
- Attached to the back of said valve is a cylinder, D, having a steam-inlet, f, in its rear.
- a piston like abutment, E hung so as to be capable of being turned about its axis and that of the cylinder which it fits by means of a rod, g, but having no motion in direction of the length of the cylinder.
- Said abutment is provided on its one side, in proximity to the inlet fin valve and connecting with the exhaust-cavity d in the latter.
- the operation is as follows: Every time the en ginc-piston approaches the ends of its stroke in opposite directions it communicates, by means of a tappet motion or otherwise, a circular movement in a given direction about its axis to the abutment E, causing one or other passages h h to be brought into communication with the opening f, so as to pass steam to one end of the abutment E and so act upon the cylinder D as to cause the valve 0 to be thrown to the right or to the left, and thus put the ports 0 c in communication, respectively, with the steam -chest A and exhaustpassage 1).
- the openin g f passes beyond the passage h or h and shuts off steam.
- the reverse movement of the valve is effected by turning the abutment E in a reverse direction so as to bring the other one of the passages h or 71/ in communication with the opening f, and one of the exhaust-ports i or i in communication with its exhaust branch is or It, so as to free the one end of the cylinder D of steam and admit it to the opposite, the ports 'i t" operating alternately every throw of the valve.
- the arrangement is such that as, in the movement of the cylinder D, steam is out 01f from either of the passages h h by the opening f passing beyond them the corresponding exhaust-port t' or i is also cut off from communication with the passages 7t 7t, thereby producing a cushioning action of the cylinder.
- Means may be provided, if desired, for regulating the period of thus cutting off the steam and exhaust-passages h h and i i, or either.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
Description
' JOSEPH W. HOPKINS.
Improvement in Valves for Steam Engines.
PatntedJan.30 ,1872.
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UNITED STATES ATENT FFIGE,
JOSEPH W. HOPKINS, OF NEW YORK, N. Y., ASSIGNOR TO HIMSELF, ALBERT G. BEARUP, AND. PATRICK OARRAHER, JR, OF SAME PLACE.
IMPROVEMENT IN VALVES FOR STEAM-ENGINES.
Specification forming part of Letters Patent No. 123,174, dated January 30, 1872.
To all whom it may concern.-
Be it known that I, JOSEPH W. HOPKINS, of the city, county, and State of New York, have invented a new and useful Improvement in Valves for Steam-Engines; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawing form ing part of this specification, and in which- Figure 1 represents a longitudinal sectional elevation of a valve constructed in accordance with my improvement, and Fig. 2 a transverse vertical section of the same.
Similar letters of reference indicate corresponding parts in both figures.
This invention consists in the combination, within a valve or steam-chest, of an oscillating abutment and a slide-valve with attached cylinder, the abutment being arranged within the cylinder, and being provided with inlets and outlets for operation in concert with passages in the slide-valve and with the ports or passages of the engine-cylinder so that, on turning the abutment at intervals alternately in a reverse direction, steam is admitted to and exhausted from opposite ends alternately of the valve-cylinder to throw the valve. Said improvement is applicable to steam-pumps as well as to steam-engines.
Referring to the accompanying drawing, A represents the valve or steam-chest of an engine, and at its steam-inlet. B is the valveseat, having an exhaust-passage, b, and the usual ports or passages c 0 leading to opposite ends of the engine-cylinder. O is the slidevalve, arranged to work over and controlsaid passages. This valve is of a D-shaped construction, being provided with a central exhaust-cavity, d, and end steam-inlets or passages e 0. Attached to the back of said valve is a cylinder, D, having a steam-inlet, f, in its rear. Within this cylinder is a piston like abutment, E, hung so as to be capable of being turned about its axis and that of the cylinder which it fits by means of a rod, g, but having no motion in direction of the length of the cylinder. Said abutment is provided on its one side, in proximity to the inlet fin valve and connecting with the exhaust-cavity d in the latter.
The operation is as follows: Every time the en ginc-piston approaches the ends of its stroke in opposite directions it communicates, by means of a tappet motion or otherwise, a circular movement in a given direction about its axis to the abutment E, causing one or other passages h h to be brought into communication with the opening f, so as to pass steam to one end of the abutment E and so act upon the cylinder D as to cause the valve 0 to be thrown to the right or to the left, and thus put the ports 0 c in communication, respectively, with the steam -chest A and exhaustpassage 1). During such movement of the valve, and after it has been fairly started, the openin g f passes beyond the passage h or h and shuts off steam. The reverse movement of the valve is effected by turning the abutment E in a reverse direction so as to bring the other one of the passages h or 71/ in communication with the opening f, and one of the exhaust-ports i or i in communication with its exhaust branch is or It, so as to free the one end of the cylinder D of steam and admit it to the opposite, the ports 'i t" operating alternately every throw of the valve. The arrangement is such that as, in the movement of the cylinder D, steam is out 01f from either of the passages h h by the opening f passing beyond them the corresponding exhaust-port t' or i is also cut off from communication with the passages 7t 7t, thereby producing a cushioning action of the cylinder. Means may be provided, if desired, for regulating the period of thus cutting off the steam and exhaust-passages h h and i i, or either.
This constitutes a very simple, quick, and munication between said cylinder, valve-chest oflieient valve. A, and ports or passages in connection with What is here claimed, and desired to be sethe engine-cylinder, substantially as specified.
cured by Letters Patent, is JOSEPH W. HOPKINS.
The combination of the oscillating abutment E with a slide valve, 0, having an at- Witnesses:
tached cylinder, D, surrounding said abnt- FRED. HAYNES,
ment, and ports for passages establishing com- R: E. RABEAU.
Publications (1)
Publication Number | Publication Date |
---|---|
US123174A true US123174A (en) | 1872-01-30 |
Family
ID=2192610
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US123174D Expired - Lifetime US123174A (en) | Improvement in valves for steam-engines |
Country Status (1)
Country | Link |
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US (1) | US123174A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4674539A (en) * | 1986-02-20 | 1987-06-23 | Sloate Harry M | Rotary servo valve |
US4683915A (en) * | 1985-02-25 | 1987-08-04 | Sloate Harry M | Pilot controlled valves |
US4762147A (en) * | 1986-02-20 | 1988-08-09 | Sloate Harry M | Servo valve with torque feedback |
US4779648A (en) * | 1985-02-25 | 1988-10-25 | Sloate Harry M | Pilot controlled valves |
US20080149181A1 (en) * | 2006-12-22 | 2008-06-26 | Caterpillar Inc. | Rotary-actuated electro-hydraulic valve |
US20090272256A1 (en) * | 2008-04-30 | 2009-11-05 | Caterpillar Inc. | Axial piston device having rotary displacement control |
-
0
- US US123174D patent/US123174A/en not_active Expired - Lifetime
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4683915A (en) * | 1985-02-25 | 1987-08-04 | Sloate Harry M | Pilot controlled valves |
US4779648A (en) * | 1985-02-25 | 1988-10-25 | Sloate Harry M | Pilot controlled valves |
US4674539A (en) * | 1986-02-20 | 1987-06-23 | Sloate Harry M | Rotary servo valve |
US4762147A (en) * | 1986-02-20 | 1988-08-09 | Sloate Harry M | Servo valve with torque feedback |
US20080149181A1 (en) * | 2006-12-22 | 2008-06-26 | Caterpillar Inc. | Rotary-actuated electro-hydraulic valve |
US7735517B2 (en) * | 2006-12-22 | 2010-06-15 | Caterpillar Inc | Rotary-actuated electro-hydraulic valve |
US20090272256A1 (en) * | 2008-04-30 | 2009-11-05 | Caterpillar Inc. | Axial piston device having rotary displacement control |
US8074558B2 (en) | 2008-04-30 | 2011-12-13 | Caterpillar Inc. | Axial piston device having rotary displacement control |
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