US123436A - Improvement in safety-valves for steam-engines - Google Patents
Improvement in safety-valves for steam-engines Download PDFInfo
- Publication number
- US123436A US123436A US123436DA US123436A US 123436 A US123436 A US 123436A US 123436D A US123436D A US 123436DA US 123436 A US123436 A US 123436A
- Authority
- US
- United States
- Prior art keywords
- steam
- valves
- safety
- engines
- cylinder
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 206010000369 Accident Diseases 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 230000037452 priming Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
- B25D9/14—Control devices for the reciprocating piston
- B25D9/16—Valve arrangements therefor
Definitions
- My invention consists of safety-valves applied to the cylinder of a steam-engine, and loaded by the pressure of steam in a supplementary steam-cylinder, all substantially as described hereafter, so as to prevent the acci dents which occur to cylinders through undue pressure in the same.
- A represents, in section, the lower portion of the cylinder of a horizontal steam-engine; B and B, portions of the opposite heads and W, part of the piston.
- a vertical passage, a communicatin g with a horizontal passage, at the entrance of which a valve, D, has its seat, each valve being attached to a rod, E, and each rod being provided with a piston, F, adapted to a small cylinder, G, with the interior of which a steampipe, H, communicates at a point between the two pistons, the steam for the small cylinder being derived from the source whence the large cylinder is supplied.
- the diameter of the small cylinder is slightly in excess of that of each valve, so that a constant pressure shall be exerted on the said valves exceeding any ordinary safe pressure against the inside of the same.
- valves are always properly loaded, no matter what may be the pressure of steam in the boiler, which is not the case when springs or weighted levers are employed to load the valves. 7
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Description
HENRY W. ADAMS.
Improvement in Safety Valves for St eam Engines.
(10,123,436, Patented Feb.'6,1872.
In W: n to 1 MW Win WITNESSES-V NITED STATES PATENT OFFICE.
IMPROVEMENT IN SAFETY-VALVES FOR STEAM-ENGINES.
Specification forming part of Letters Patent No. 123,436, dated February 6, 1872.
Specification describing an Improvement in Steam-Loaded Safety-Valves for the Cylinders of SteamEngines, invented by HENRY W. ADAMS, of Philadelphia, Pennsylvania.
Steam-Loaded Safety-Valves for Cylinders of Steam-Engines.
My invention consists of safety-valves applied to the cylinder of a steam-engine, and loaded by the pressure of steam in a supplementary steam-cylinder, all substantially as described hereafter, so as to prevent the acci dents which occur to cylinders through undue pressure in the same.
The figure in the accompanying drawing represents a sectional view of part of the cylinder of a horizontal steam-enginewith my improved safety-valves.
Serious accidents frequently occur through the accumulation of water in the cylinders of steam-engines, this water being attributable to the priming of the boiler or to the condensation of steam in the cylinders. Occasionally the heads of cylinders are broken, owing to the water being driven against them by the piston. I obviate such accidents by the in vention which I will now proceed to describe.
A represents, in section, the lower portion of the cylinder of a horizontal steam-engine; B and B, portions of the opposite heads and W, part of the piston. Near each end of the cylinder is a vertical passage, a, communicatin g with a horizontal passage, at the entrance of which a valve, D, has its seat, each valve being attached to a rod, E, and each rod being provided with a piston, F, adapted to a small cylinder, G, with the interior of which a steampipe, H, communicates at a point between the two pistons, the steam for the small cylinder being derived from the source whence the large cylinder is supplied. The diameter of the small cylinder is slightly in excess of that of each valve, so that a constant pressure shall be exerted on the said valves exceeding any ordinary safe pressure against the inside of the same.
Whenever water accumulates to a dangerous extent at either end of the large cylinder, it will open one of the valves and be discharged, immediately after which the valve will be closed by the pressure of steam in the small cylinder. The steam-loaded valves -will also relieve the cylinder from the undue pressure caused within the same by the sudden reversing of the engines, as in locomotives.
One of the main advantages of my invention is that the valves are always properly loaded, no matter what may be the pressure of steam in the boiler, which is not the case when springs or weighted levers are employed to load the valves. 7
Although I have illustrated and described my invention as applied to the cylinder of a horizontal engine, itmay be adopted with advantage in connection with vertical or inclined cylinders.
I do not desire to restrict myself to any specific'construction of valves; but
I claim as my invention- I Safety-valves applied to the cylinder of a steam-engine, and constantly loaded by the pressure of steam in a supplementary steamcylinder, which communicates with a steamsupply pipe, and to which are fitted pistons attached to said valves, all substantially as described.
In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.
HENRY W. ADAMS.
Witnesses:
WM. A. STEEL, HARRY SMrrH.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US123436A true US123436A (en) | 1872-02-06 |
Family
ID=2192872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US123436D Expired - Lifetime US123436A (en) | Improvement in safety-valves for steam-engines |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US123436A (en) |
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0
- US US123436D patent/US123436A/en not_active Expired - Lifetime
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