US48901A - Improvement in balanced slide-valves - Google Patents
Improvement in balanced slide-valves Download PDFInfo
- Publication number
- US48901A US48901A US48901DA US48901A US 48901 A US48901 A US 48901A US 48901D A US48901D A US 48901DA US 48901 A US48901 A US 48901A
- Authority
- US
- United States
- Prior art keywords
- valve
- steam
- rollers
- pressure
- valves
- 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
- 230000001105 regulatory Effects 0.000 description 4
- NDNUANOUGZGEPO-QMMMGPOBSA-N Coniine Chemical compound CCC[C@H]1CCCCN1 NDNUANOUGZGEPO-QMMMGPOBSA-N 0.000 description 2
- 229940077451 coniine Drugs 0.000 description 2
- 229930016881 coniine Natural products 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
Images
Classifications
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- 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
- F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
- F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
- F16K11/0655—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with flat slides
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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
- Y10T137/8667—Reciprocating valve
Definitions
- This invention relates particularly to slidevalves which take steam from below; and its object is to produce on the back of the valve a certain pressure somewhat stronger than the pressure which acts on the under side of the same, so that the valve is held on its seat with sufcient power to prevent its jumping or unl seating.
- the invention consists in combining with the valve one or more rollers and a diaphragm, which is exposed to the action of the steam and caused bythe steam to bear on the rollers and to hold them down upon the hack of the valve.
- the area of said diaphragm is so regulated that the pressure of the steam acting on it overbalances the pressure of the steam acting on the under side ot the valve, and the valve is consequently held down on its seat with sufficient force to prevent it from jumping.
- they are provided with cogs at both ends, and these cogs gear in corresponding racks secured to the back of the valve, near its edges.
- A represents the steam-chest of an ordinary steam-cylinder, which takes steam through the channels a a,'and to whichpsteam is admitted through the channel b.
- B is the slide-valve, and the steam-channel b communicates with the ports a a through the cavitycin the under side of the valve.
- the pressure of the steam has a tendency to throw the valve o" from its seat, and it is therefore necessary to apply some device capable of holding the valve down without preventing it from traversing on its seat.
- the upper compartment communicates, by a suitable passage in the side of the valve-chest, with the steam-channel b, so that the upper surface of the diaphragm is exposed to the full pressure of the live steam.
- Said diaphragm is made ofsheet metal or other suitable material, and it is strengthened by the platesfg, one on top and one below.
- the lower plate, g bears on rollers D D, which rest on the back of the valve.
- These rollers are provided with cogs IL at their ends, which gear in toothed racks 1'., secured to or formed inthe back of the valve, near its edges, as clearly shown in Fig. 2 ot' the drawings.
- the effective surface ot' the diaphragtn can be made adjustable by means of the slides j, so that the same can be adjusted according to circumstances.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Multiple-Way Valves (AREA)
Description
UNITED STATES PATENT OFFICE.
A. S. CAMERON, OF NEW YORK, N. Y.
Specification forming part of Letters Patent No. 48,901, dated July 25, 1865.
To all whom it may concern Be it known that I, A. S. CAMERON, on the corner Twenty-Second street and Second avenue, in the city, county, and State of New York, have invented a new and Improved Balance Slide-Valve; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same, reference beinghad to the accompanyingdrawings, forming part of this specication, in which- Figure 1 represents a longitudinal vertical section of this invention. Fig. 2 is a transverse vertical section of the same.
Similar letters of reference indicate like parts.
This invention relates particularly to slidevalves which take steam from below; and its object is to produce on the back of the valve a certain pressure somewhat stronger than the pressure which acts on the under side of the same, so that the valve is held on its seat with sufcient power to prevent its jumping or unl seating.
The invention consists in combining with the valve one or more rollers and a diaphragm, which is exposed to the action of the steam and caused bythe steam to bear on the rollers and to hold them down upon the hack of the valve. The area of said diaphragm is so regulated that the pressure of the steam acting on it overbalances the pressure of the steam acting on the under side ot the valve, and the valve is consequently held down on its seat with sufficient force to prevent it from jumping. In order to keep the rollers parallel on the back of the valve, they are provided with cogs at both ends, and these cogs gear in corresponding racks secured to the back of the valve, near its edges.
A represents the steam-chest of an ordinary steam-cylinder, which takes steam through the channels a a,'and to whichpsteam is admitted through the channel b.
B is the slide-valve, and the steam-channel b communicates with the ports a a through the cavitycin the under side of the valve. In valves of this description the pressure of the steam has a tendency to throw the valve o" from its seat, and it is therefore necessary to apply some device capable of holding the valve down without preventing it from traversing on its seat. I have effected this object by means of a diaphragm, C, which forms a partition in the valve-chest7 dividing the same in two compartments, d e. The upper compartment communicates, by a suitable passage in the side of the valve-chest, with the steam-channel b, so that the upper surface of the diaphragm is exposed to the full pressure of the live steam. Said diaphragm is made ofsheet metal or other suitable material, and it is strengthened by the platesfg, one on top and one below. The lower plate, g, bears on rollers D D, which rest on the back of the valve. These rollers are provided with cogs IL at their ends, which gear in toothed racks 1'., secured to or formed inthe back of the valve, near its edges, as clearly shown in Fig. 2 ot' the drawings. When the steam-pipe is opened and stealn admitted to the channel b the upward pressure of the valve is counteracted by the downward pressure on the diaphragm, and the effective surface ot' this diaphragm is so regulated that the downward pressure of the same overbalances the upward pressure on the valve, and the latter is held on its seat with sufficient power to prevent leakage, and at the same time the whole is so arranged that the valve moves on its seat with the least possible loss by friction. Any
increase ordecreasein the pressure ofthe steam has no effect on the motion ofthe valve; and, it' desired, the effective surface ot' the diaphragtn can be made adjustable by means of the slides j, so that the same can be adjusted according to circumstances.
rIhe cogs at the ends ofthe rollers keep the same parallel, and the pressure exerted by the diaphragm on the rollers is transmitted to the back of the valve with the least possible loss by friction.
The .object ot' keeping the rollers parallel would be effected, however, by running connections from one to the other or by other equivalent means, and I do not wish to coniine myself to the means shown in the drawings.
I claim as new and desire to secure by Letters Patentl. The combination ofthe diaphragm O, rollers D, and valve B, constructed and operating substantially as and for the purpose set forth.
2. The arrangement of cogs or their equivalents at the ends of the rollers and corresponding toothed rackson the back of the slide-valve, substantially as and for the purposes described.
A. S. CAMERON.
Witnesses:
WM. DEAN OVERELL, M. M. LIVINGSTON.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US48901A true US48901A (en) | 1865-07-25 |
Family
ID=2118456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US48901D Expired - Lifetime US48901A (en) | Improvement in balanced slide-valves |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US48901A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3396332A1 (en) * | 2017-04-26 | 2018-10-31 | Georg Fischer Central Plastics LLC | Meter bypass adapter |
-
0
- US US48901D patent/US48901A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3396332A1 (en) * | 2017-04-26 | 2018-10-31 | Georg Fischer Central Plastics LLC | Meter bypass adapter |
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