US381152A - Valve for steam-engines - Google Patents
Valve for steam-engines Download PDFInfo
- Publication number
- US381152A US381152A US381152DA US381152A US 381152 A US381152 A US 381152A US 381152D A US381152D A US 381152DA US 381152 A US381152 A US 381152A
- Authority
- US
- United States
- Prior art keywords
- steam
- cylinder
- valve
- chest
- engines
- 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 8
- 210000001503 Joints Anatomy 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 101710040692 PARPBP Proteins 0.000 description 2
- 102100018393 PRRT2 Human genes 0.000 description 2
- 101700012359 PRRT2 Proteins 0.000 description 2
- 240000007313 Tilia cordata Species 0.000 description 2
- 241001577519 Verodes Species 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 101710042453 sctC Proteins 0.000 description 2
- 101700016944 spiA Proteins 0.000 description 2
- 125000003696 stearoyl group Chemical group O=C([*])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 238000004326 stimulated echo acquisition mode for imaging Methods 0.000 description 2
- 125000002987 valine group Chemical group [H]N([H])C([H])(C(*)=O)C([H])(C([H])([H])[H])C([H])([H])[H] 0.000 description 2
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L15/00—Valve-gear or valve arrangements, e.g. with reciprocatory slide valves, other than provided for in groups F01L17/00 - F01L29/00
- F01L15/08—Valve-gear or valve arrangements, e.g. with reciprocatory slide valves, other than provided for in groups F01L17/00 - F01L29/00 with cylindrical, sleeve, or part-annularly-shaped valves; Such main valves combined with auxiliary valves
-
- 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
Definitions
- Figure 1 is a vertical 'longitudinal sectional view of the operating parts of a steam-engine embodying my improvements
- Fig.,2 is a vertical secrcylinder C are cast integrally and are formed of the same piece of metal.
- valve-cylinder C is arranged in the side of the chest B, adjacent to the steam-cylinder A.
- the said valve-cylinder C is of less diameter than the cylindrical chest B, and is also somewhat shorter than the latter, so that a space is formed between the sides and ends of the cylinders-B G.
- heads D On the ends of thecylindrical steam-chest B are fitted heads D by means of ground joints, and on the ends ofthe steam-cylinder A are fitted heads E by means of ground joints.
- Thek centralportionof thebore F intermediate the steam-ports is'enlarged to form an exhaust-V chamber, M, and an opening, N, is made through the sides' of the cylindrical steamthe exhaust-steam passes.
- O represents the piston, whichis ofthe usual l and through a packing box formed on the said head.
- chest and valve-cylinder kC through which R represents a val verod that extends th rough j one of the heads D of the cylindrical steamare cylindrical in shape, are fitted snugly in thel fbore F by means of expansion packinga chestand enters the valve-cylinder C, asshown. ⁇
- valves S T Secured to the saidk rod are valves S T, which l of the spirally-arran gedfopenin gs Iand bridgepiecesL between the said openings the inner I 1 surface, of the cy'lindricalboreF is preserved unbroken, so that compression is at al1 times maintained on the packing-rings U WhileJthe and the said packing-rings are prevented from expanding and catchingv in' the ports4 as ther 'valves are in position in the valve-cylinder,
- the recesses K which communicate with the openings I and with .ends of the steam-cylinder A, are veryA short, vthe ports being arranged directly over- Vthe endsof the cylinder, and thereby the area of the said recesses K is reduced to a minimum, -and consequently only a' very 'small l quantity of steam remains dead inA the said re-- Steps at each stroke of the piston.
- the said recessesK are arranged-directly atw the ends of thefsteam-cylinder only la' yverysk slight space is left between the cylinderheads and the piston at the endsof the strokes of the? .ICCA
- the operationof my invention is as follows: Live steam is admitted to the cylindrical steam- ⁇ chest through a central opening, V, therein j v and is caused to bear against the outerendsof'V the valves S T with equal pressure, thereby balancing the said valves and enabling the .same to be moved lengthwise in 'the valve- -therefore passes through the port G into the rear end of the cylinder A and forces the piston forward, and the dead steam in the said cylinder in front of the piston passes through the port H into the exhaust-chamber M and through the opening N.
- valves When the piston reaches the forward limit of its stroke, the valves are moved rearward by suitable gearing or mechanism, which is not here shown, as it forms no part of my present improvement, (and may be of the form ordinarily employed in steam-engines lfor this purpose,) thereby causing the positions of the valves S and T to be the reverse of that shown in Fig. 1', so that the valve S will be on the outer side of the port G and the valve T will be on the inner side of the port H.
- suitable gearing or mechanism which is not here shown, as it forms no part of my present improvement, (and may be of the form ordinarily employed in steam-engines lfor this purpose,) thereby causing the positions of the valves S and T to be the reverse of that shown in Fig. 1', so that the valve S will be on the outer side of the port G and the valve T will be on the inner side of the port H.
- a steam-engine thus constructed will be extremely cheap and simple. It is very readily made and is easily put in running order.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Description
(Nomea-l.) l J. S. MARSHALL.,
VALVE FORSTEAM ENGINES.
No. 381,152. Patented Apr. 17, r188.8.l
V l m.
Witwe- 00420. l v SW1/Lto@ @@/fw A 05km jSfJiM'wka 'f UNITED STATES' PATENT". OFFICE.
s JOHN s. MARSHALL, or IMLAY CITY,immensen.,y
vALVEpVFoR STEAM,-ENeiNtze.Y
SPECIE-marron forming pari: gf Leners PatentfNo. 381,152. dated Aprn 17,1888. Y f f Application filed October 26, 1887. Serial No. 253,46d. (N o model.) v
To all whom t may concern: e y s y Be itvknown that l, JOHN S. MARSHALL, a citizen, of the United States, residing at Imlay City, in the county of Lapeer and State of Michigan, have. invented a new and useful Improvement in Valves for Steam-Engines, of which the following-is a specification.
Y My inventiongrelatesto an improvement in valves vfor steam-engines; and it consists in the peculiar` construction and combination of devices that will be more fully set forth hereinafter, and particularly pointed out in the claims. 1
In the accompanying drawings, Figure 1 is a vertical 'longitudinal sectional view of the operating parts of a steam-engine embodying my improvements; Fig.,2 is a vertical secrcylinder C are cast integrally and are formed of the same piece of metal.
The ends of the steam-chest B project some- A what beyond the ends of the steam-cylinder A,
and the valve-cylinder C is arranged in the side of the chest B, adjacent to the steam-cylinder A. The said valve-cylinder C is of less diameter than the cylindrical chest B, and is also somewhat shorter than the latter, so that a space is formed between the sides and ends of the cylinders-B G. On the ends of thecylindrical steam-chest B are fitted heads D by means of ground joints, and on the ends ofthe steam-cylinder A are fitted heads E by means of ground joints. v
In the center of the valve-cylinder C and extending longitudinally through the same` is al cylindrical bore, F. In opposite ends of the valvecylinder Care formed steam-ports G H, each of iwhich comprises a series of four spiA rally-arranged openings, I, which openings eX- tend entirely around the circumference ofthe bore and communicate with each otherA and with recesses K, that are made in the under side of the valvecylinder and communicate with the ends of the'ste'am-'cylinden arranging the spiral `openings I bridgefpieces L are formed between thesame, which bridgepieces are integral with the cylinder C. Thek centralportionof thebore F intermediate the steam-ports is'enlarged to form an exhaust-V chamber, M, and an opening, N, is made through the sides' of the cylindrical steamthe exhaust-steam passes.
O represents the piston, whichis ofthe usual l and through a packing box formed on the said head. a
By thus chest and valve-cylinder kC, through which R represents a val verod that extends th rough j one of the heads D of the cylindrical steamare cylindrical in shape, are fitted snugly in thel fbore F by means of expansion packinga chestand enters the valve-cylinder C, asshown.`
Secured to the saidk rod are valves S T, which l of the spirally-arran gedfopenin gs Iand bridgepiecesL between the said openings the inner I 1 surface, of the cy'lindricalboreF is preserved unbroken, so that compression is at al1 times maintained on the packing-rings U WhileJthe and the said packing-rings are prevented from expanding and catchingv in' the ports4 as ther 'valves are in position in the valve-cylinder,
understood. Furthermore, the recesses K, which communicate with the openings I and with .ends of the steam-cylinder A, are veryA short, vthe ports being arranged directly over- Vthe endsof the cylinder, and thereby the area of the said recesses K is reduced to a minimum, -and consequently only a' very 'small l quantity of steam remains dead inA the said re-- cesses at each stroke of the piston. Inasmuch as the said recessesK are arranged-directly atw the ends of thefsteam-cylinder only la' yverysk slight space is left between the cylinderheads and the piston at the endsof the strokes of the? .ICCA
latter for dead steam.
.e The operationof my invention is as follows: Live steam is admitted to the cylindrical steam-` chest through a central opening, V, therein j v and is caused to bear against the outerendsof'V the valves S T with equal pressure, thereby balancing the said valves and enabling the .same to be moved lengthwise in 'the valve- -therefore passes through the port G into the rear end of the cylinder A and forces the piston forward, and the dead steam in the said cylinder in front of the piston passes through the port H into the exhaust-chamber M and through the opening N. When the piston reaches the forward limit of its stroke, the valves are moved rearward by suitable gearing or mechanism, which is not here shown, as it forms no part of my present improvement, (and may be of the form ordinarily employed in steam-engines lfor this purpose,) thereby causing the positions of the valves S and T to be the reverse of that shown in Fig. 1', so that the valve S will be on the outer side of the port G and the valve T will be on the inner side of the port H. When thus arranged, steam will be admitted through the port H into the frontend of thesteamcylinder to force the piston rearward therein, and the steam in the rear end of the said cylinder escapes upward through the port G into the exhaust-` chamber M and out through the opening N.
A steam-engine thus constructed will be extremely cheap and simple. It is very readily made and is easily put in running order. By
casting the cylinder A, the cylindrical steamchest B, and the valve-cylinder C in one integral piece, as before described, no packing is required between the steam-c linde? and the 1. In a steam-engine, the combination ofl the steam-cylinder A, having the vertical recesses K Vadjoining its heads and extending transversely from wall to wall, the steam-chest extending fat each end beyond said cylinder and taking steam centrally on top at V, the valve-cylinder provided with the inclined spiral ports -G H, opening directly into the recesses K, and all in the same vertical plane open at its ends to take steam from the steamchest, and having the exhaust-opening at its central port, and the valves S T provided with expansion packing-rings of ordinary construction, substantially as specified.
2. In a steam engine, in combination with the steam-cylinder, the steam-chest extending at each end beyond the said cylinder, and the valve-cylinder within the steam-chest adjoining the steam-cylinder and having ports opening directly thereinto, the said steam-cylinder, steam-chest, and valve-cylinder being cast integral with each other, and the cylinder-heads and steam-chest heads fitted to their seats by ground-joints, substantially as specified.
In testimony that I claim the foregoing as my own I have hereto affixed my signaturein presence of two witnesses.
JOHN S. MARSHALL.
Witnesses:
J oHN H. SIGGERs, E. G. SIGGERs.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US381152A true US381152A (en) | 1888-04-17 |
Family
ID=2450146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US381152D Expired - Lifetime US381152A (en) | Valve for steam-engines |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US381152A (en) |
-
0
- US US381152D patent/US381152A/en not_active Expired - Lifetime
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US381152A (en) | Valve for steam-engines | |
| US696691A (en) | Valve for engines. | |
| US152541A (en) | Improvement in steam-engines | |
| US139463A (en) | Improvement in piston-valves | |
| US544476A (en) | Half to dorr b | |
| US162714A (en) | Improvement in balanced and cut-off valves | |
| US329954A (en) | Steam-engine | |
| US431413A (en) | Valve for steam-pumps | |
| US414156A (en) | Thirds to john d | |
| US454753A (en) | Steam-actuated valve | |
| US161451A (en) | Improvement in cut-offs for steam-engines | |
| US471882A (en) | Steam-actuated valve for engines | |
| US360594A (en) | Steam-engine valve | |
| US194034A (en) | Improvement in steam-engines | |
| US226218A (en) | Steam-valve | |
| US129726A (en) | Improvement in slide-valves | |
| USRE5984E (en) | Improvement in piston-valves | |
| US389768A (en) | Steam-engine | |
| US139549A (en) | Improvement in compound steam-engines | |
| US565063A (en) | And goldsbury harden | |
| US174956A (en) | Improvement in valves for steam-engines | |
| US728709A (en) | Compound steam-engine. | |
| US725911A (en) | Engine. | |
| US380110A (en) | Steam-engine | |
| US443233A (en) | Steam-engine valve |