US177362A - Improvement in steam-engines - Google Patents
Improvement in steam-engines Download PDFInfo
- Publication number
- US177362A US177362A US177362DA US177362A US 177362 A US177362 A US 177362A US 177362D A US177362D A US 177362DA US 177362 A US177362 A US 177362A
- Authority
- US
- United States
- Prior art keywords
- steam
- improvement
- engines
- valve
- seat
- 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
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- 230000003028 elevating Effects 0.000 description 2
- 230000000414 obstructive Effects 0.000 description 2
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
- F01B25/00—Regulating, controlling, or safety means
Definitions
- valve-seat A provided as usual with the two ports a c and the intermediate exhaust-port 1), two other auxiliary ports, d 01, leading from the bottom of the steam-chest into the passages a c,-also separate valves 0 e to the said auxiliary ports, each of, the said.
- valves 0 e beingarranged in yokes, staples, or guides f f, and furnished with a lifting or elevating spring, g, to throw it off its seat and up to the crowns of the yokes or staples f f, all being substantially as represented.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Description
N. P. STEVENS.
'STEAM EN'GINE. No.177,36Z. Patented May 16,1876.
mil-
N. PETERS. PHOTO-LITHDGRAPNER, WASHINGTON. D Q I UNITED STATES PATENT QFFIGE,
NATHAN P. STEVENS, HOPKINTON, NEW HAMPSHIRE.
IMPROVEMENT IN STEAM-ENGINES.
Specification forming part of Letters Patent No. 177,362, dated May 16, 1876; application filed April 5, 1876.
To all whom it may concern:
Be it known that I, NATHAN P. STE ENS, of Hopkinton, of the county of Merrimac and State ofNew Hampshire, have invented a new and useful Improvement in Steam-Engines; and do hereby declare the same to be fully described in the following specification, and represented in the accompanying drawings, of which- Figure l is a top view, and Fig. 2 a longitudinal section of a steam -engine cylinder valve-seat provided with my invention, the purpose of" such invention being to prevent what is termed vacuum obstruction of the piston, when the steam is shut oil and the piston is in motion in the cylinder.
In carrying out my said invention I combine with the valve-seat A, provided as usual with the two ports a c and the intermediate exhaust-port 1), two other auxiliary ports, d 01, leading from the bottom of the steam-chest into the passages a c,-also separate valves 0 e to the said auxiliary ports, each of, the said.
valves 0 e beingarranged in yokes, staples, or guides f f, and furnished with a lifting or elevating spring, g, to throw it off its seat and up to the crowns of the yokes or staples f f, all being substantially as represented.
- seats, thereby opening a free communication between the two portions of the cylinder-bore, that may be on opposite sides of the pistonhead. i
From the above it will be seen that, as the exhaust-port will remain at all times covered a by the slide-valve, there will, by my present improvement, be no chance of any sparks being drawn by the piston through such exhaust and into the cylinder.
I claim In combination with the valve-seat A, and
main and exhaust portsab 0 of the valvechest of a steam-engine cylinder, the auxiliary ports 01 d, and the valves 6 0 and their elevatingsprings g, arranged with the said valve-seat and its ports, substantially in manner, and to operate as and for the purpose specified.
NATHAN P. STEVENS. Witnesses:
It. H. EDDY, J. R. Snow.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US177362A true US177362A (en) | 1876-05-16 |
Family
ID=2246769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US177362D Expired - Lifetime US177362A (en) | Improvement in steam-engines |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US177362A (en) |
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0
- US US177362D patent/US177362A/en not_active Expired - Lifetime
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