US30184A - Slide-valve - Google Patents
Slide-valve Download PDFInfo
- Publication number
- US30184A US30184A US30184DA US30184A US 30184 A US30184 A US 30184A US 30184D A US30184D A US 30184DA US 30184 A US30184 A US 30184A
- Authority
- US
- United States
- Prior art keywords
- valve
- steam
- port
- seat
- chest
- 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
- 210000000038 chest Anatomy 0.000 description 20
- 230000001939 inductive effect Effects 0.000 description 8
- 238000010276 construction Methods 0.000 description 4
- 230000000875 corresponding Effects 0.000 description 4
- 240000001973 Ficus microcarpa Species 0.000 description 2
- 210000003284 Horns Anatomy 0.000 description 2
Images
Classifications
-
- 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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
- F16K3/16—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with special arrangements for separating the sealing faces or for pressing them together
- F16K3/18—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with special arrangements for separating the sealing faces or for pressing them together by movement of the closure members
- F16K3/184—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with special arrangements for separating the sealing faces or for pressing them together by movement of the closure members by means of cams
- F16K3/186—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with special arrangements for separating the sealing faces or for pressing them together by movement of the closure members by means of cams by means of cams of wedge from
Definitions
- My invention consists in certain means whereby the valve is relieved of all pressure toward its seat and is made to work with a very inconsiderable amount of friction.
- A is the valve seat having three ports b, c, c, arranged as for the ordinary three-port valve but so that the center port b, communicates with the induction steam pipe S, instead of with the exhaust pipe.
- the ports c, c, lead to the ends of the cylinder in the usual manner.
- D is the valve consisting of a flat plate having its face of a form similar to that of the ordinary three port valve but having an opening cl, right through it, such opening corresponding in form and arrangement with the exhaust cavity commonly provided in the face, the sides of the said opening being perpendicular to the face and back of the valve, both of which are perfectly parallel.
- E is a flat plate fitted steam tight to the back of the valve, covering it entirely, and made sufficiently longer to keep the valve covered, during the whole movement but short enough to allow the exhaust steam to pass its ends where it is furnished with horns or studs e, e, whose ends fit between the ends of the valve chest and thereby prevent its moving longitudinally with the valve.
- F, F are two set screws screwing through the cover or back of the valve chest and pressing upon the back of the plate to keep it in steam tight contact with the valve and the valve in steam tight contact with its seat A.
- the valve D is operated in t-he usual manner except that its movement relatively to the movement of the piston of the engine is precisely the reverse of that of the ordinarily constructed three-port valve; and in such operation it admits steam to the cylinder from the cavity of the port Z), through the opening (Z, and through the cylinder ports c, c, alternately.
- the steam is exhausted from the cylinder through the ports o', c, alternately under the ends of the valve and passes through the valve chest to the pipe C.
- the drawing represents the steam, whose course is indicated by arrows, as entering the cylinder by the port cf, and exhausting therefrom by the port c.
- the valve is subject to no pressure of the live steam except in such portion of this face as may overhang the port or the port c, or c, which is receiving the steam, and this small amount of pressure which is in an upward direction is met by the plate E, and the set screws F, F.
- valve and similar application of a plate at its back may be used in connection with a similar induction port in the seat when a separate valve is used in connection with each of the cylinder ports C, c, each valve in such case being arranged in a separate valve chest or both in one valve chest, the chest or chests in such case being in constant free communication with the exhaust pipe.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Description
UNITED sTATEs nPATENT oEEIcE.
JOHN RANDALL, OF ELMIRA, NEW YORK, ASSIGNOR TO I-IIMSELF, AND R. R. SMALLEY, OF TROY, NEW YORK.
SLIDE-VALVE.
Specification of Letters Patent No. 30,184, dated September 25, 1860.
To all whom it may concern:
Be it known that I, JOHN RANDALL, of Elmira, in the county of Ohemung and State of New York, have invented a new and useful Improvement in Slide-Valves for Steam- Engines; and I do hereby declare that the followino' is a full, clear, and exact descrip* tion of the same, reference being had to the accompanying drawings, forming part of this specification, in which- Figure 1 is a longitudinal section of the valve seat, valve and valve box of a steam engine illustrating my improvement. Fig. 2, is a transverse section of the same in the line of Fig. l. Fig. 3 exhibits a plan of the interior of the valve chest without the back plate which is fitted to the valve.
Similar letters of reference indicate corresponding parts in the several figures.
My invention consists in certain means whereby the valve is relieved of all pressure toward its seat and is made to work with a very inconsiderable amount of friction.
A, is the valve seat having three ports b, c, c, arranged as for the ordinary three-port valve but so that the center port b, communicates with the induction steam pipe S, instead of with the exhaust pipe. The ports c, c, lead to the ends of the cylinder in the usual manner.
B, is the valve chest covering the valve seat in the usual manner but having the exhaust pipe C, connected with it.
D, is the valve consisting of a flat plate having its face of a form similar to that of the ordinary three port valve but having an opening cl, right through it, such opening corresponding in form and arrangement with the exhaust cavity commonly provided in the face, the sides of the said opening being perpendicular to the face and back of the valve, both of which are perfectly parallel.
E, is a flat plate fitted steam tight to the back of the valve, covering it entirely, and made sufficiently longer to keep the valve covered, during the whole movement but short enough to allow the exhaust steam to pass its ends where it is furnished with horns or studs e, e, whose ends fit between the ends of the valve chest and thereby prevent its moving longitudinally with the valve.
F, F, are two set screws screwing through the cover or back of the valve chest and pressing upon the back of the plate to keep it in steam tight contact with the valve and the valve in steam tight contact with its seat A.
The valve D, is operated in t-he usual manner except that its movement relatively to the movement of the piston of the engine is precisely the reverse of that of the ordinarily constructed three-port valve; and in such operation it admits steam to the cylinder from the cavity of the port Z), through the opening (Z, and through the cylinder ports c, c, alternately. The steam is exhausted from the cylinder through the ports o', c, alternately under the ends of the valve and passes through the valve chest to the pipe C.
The drawing represents the steam, whose course is indicated by arrows, as entering the cylinder by the port cf, and exhausting therefrom by the port c. In the above operation the valve is subject to no pressure of the live steam except in such portion of this face as may overhang the port or the port c, or c, which is receiving the steam, and this small amount of pressure which is in an upward direction is met by the plate E, and the set screws F, F.
In case of the valve wearing leaky it is set tight to its seat by screwing down the set screws F, F.
A similar construction of valve and similar application of a plate at its back may be used in connection with a similar induction port in the seat when a separate valve is used in connection with each of the cylinder ports C, c, each valve in such case being arranged in a separate valve chest or both in one valve chest, the chest or chests in such case being in constant free communication with the exhaust pipe.
I do not claim separately either the induction of the steam through the central port, the construction of the valve with a central opening right through it, or the application of a plate and set screws at the back of the valve; but
that I claim as my invention and desire to secure by Letters Patent is- The employment in combination with the valve constructed with a single opening (l, right through it, of the induction cavity in the seat, the plate E, and set screws F, F, applied to the back of the valve, and a valve chest in constant communication with the eduction pipe, the whole arranged and operating substantially as herein set forth.
JOHN RANDALL.
Witnesses:
GEO. L. DAvIs, ROBERT F. HYLEN.
Publications (1)
Publication Number | Publication Date |
---|---|
US30184A true US30184A (en) | 1860-09-25 |
Family
ID=2099832
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US30184D Expired - Lifetime US30184A (en) | Slide-valve |
Country Status (1)
Country | Link |
---|---|
US (1) | US30184A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4493417A (en) * | 1982-12-23 | 1985-01-15 | Idn Inventions And Development Of Novelties Ag | Storage device for flat recording media |
US4538729A (en) * | 1983-08-29 | 1985-09-03 | Idn Inventions And Development Of Novelties Ag | Recording media storage apparatus and technique |
US4640415A (en) * | 1983-01-15 | 1987-02-03 | Idn Inventions And Development Of Novelties Ag | Container having automatic doors and for accommodating data storage media |
US5279418A (en) * | 1992-12-01 | 1994-01-18 | Wheatley Robert M | Tape cassette protective cover |
US5338108A (en) * | 1993-01-05 | 1994-08-16 | Hunt Ronald E | Disk storage device |
US5988376A (en) * | 1995-07-03 | 1999-11-23 | Autronics Plastics, Inc. | Security devices for information storage media with locking mechanisms |
-
0
- US US30184D patent/US30184A/en not_active Expired - Lifetime
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4493417A (en) * | 1982-12-23 | 1985-01-15 | Idn Inventions And Development Of Novelties Ag | Storage device for flat recording media |
USRE32753E (en) * | 1982-12-23 | 1988-09-20 | Idn Inventions And Development Of Novelties Ag | Storage device for flat recording media |
US4640415A (en) * | 1983-01-15 | 1987-02-03 | Idn Inventions And Development Of Novelties Ag | Container having automatic doors and for accommodating data storage media |
US4712678A (en) * | 1983-01-15 | 1987-12-15 | Idn Inventions And Development Of Novelties Ag | Container having automatic doors and for accommodating data storage media |
US4538729A (en) * | 1983-08-29 | 1985-09-03 | Idn Inventions And Development Of Novelties Ag | Recording media storage apparatus and technique |
US5279418A (en) * | 1992-12-01 | 1994-01-18 | Wheatley Robert M | Tape cassette protective cover |
US5338108A (en) * | 1993-01-05 | 1994-08-16 | Hunt Ronald E | Disk storage device |
US5988376A (en) * | 1995-07-03 | 1999-11-23 | Autronics Plastics, Inc. | Security devices for information storage media with locking mechanisms |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US30184A (en) | Slide-valve | |
US28552A (en) | Steam-valve | |
US30485A (en) | letellier | |
US32934A (en) | Governor-valve for steam-engines | |
US431413A (en) | Valve for steam-pumps | |
US29822A (en) | Slide-valve for steam-engines | |
US24821A (en) | Oscillating steam-engine | |
US25146A (en) | Slide-valve oe steam-engines | |
US34310A (en) | Improved valve for hydraulic engines | |
US304975A (en) | strong- | |
US36857A (en) | Improvement in balance slide-valves | |
US750400A (en) | Wilhelm schmidt | |
US25248A (en) | Valve for steam-engines | |
US30550A (en) | Valve fob steam-eitoines | |
US27168A (en) | Noah suttox | |
US31629A (en) | Steam-valve | |
US804413A (en) | Steam-turbine. | |
US1212959A (en) | Valve structure for steam-engines. | |
US148807A (en) | District of | |
US59340A (en) | Improvement in locomotive-engines | |
US671783A (en) | Steam-engine. | |
US183182A (en) | Improvement in steam-engines | |
US187014A (en) | Improvement in balanced valves for steam-engines | |
US22192A (en) | Valve of steam-engines | |
US684019A (en) | Steam-engine. |