US683469A - Antifriction steam piston-head. - Google Patents
Antifriction steam piston-head. Download PDFInfo
- Publication number
- US683469A US683469A US4289301A US1901042893A US683469A US 683469 A US683469 A US 683469A US 4289301 A US4289301 A US 4289301A US 1901042893 A US1901042893 A US 1901042893A US 683469 A US683469 A US 683469A
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- US
- United States
- Prior art keywords
- piston
- head
- steam
- partition
- 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
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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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J1/00—Pistons; Trunk pistons; Plungers
- F16J1/09—Pistons; Trunk pistons; Plungers with means for guiding fluids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/122—Details or component parts, e.g. valves, sealings or lubrication means
- F04B1/124—Pistons
Definitions
- My invention relates to steam piston-heads and is an improvement upon my application, Serial No. 23,472, filed July 13, 1900; and it consists in providing a hollow piston-head with a central diaphragm or partition, the diameter of which is considerably less than the end sections, thereby providing a continuous steam-chamber without diminishing the area of the piston-head.
- Another object is to provide a novel means of mounting a valve-stem in the central diaphragm or partition and enable two valves to operate thereon.
- Figure 1 is a vertical longitudinal section of a piston-head which embodies my invention.
- Fig. 2 is an end view of the piston with one of the end sections re moved.
- A represents a piston-head which is composed of the two hollow sections B and the central dividing-partition 0, all three parts of which are secured to the piston-rodD, which is passed through them and held by a nut at its end. These parts are also held together by clamping-bolts E, and these bolts are especially of advantage in large pistonheads, where the central nut is not strong enough to stand the strain.
- Each of the 1101- low sections is provided with a port F, leading from the outer side to the chamber H, and each section has a series of lugs or projections I, the ends of which engage the central partition C near its edge, and which lugs may also be provided with openings for the rod J, which acts as a valve-stem for the spring-pressed inwardly-opening valves K, mounted upon each end thereof and capable of longitudinal movement thereon.
- the valves are provided with an annular flange L, which envelops the spring, and
- the central partition is of less diameter than the inner edge of the chamfered portion of the end section and extends only to the edge of the lugs or projections, leaving space for the escape of the steam from one side of the section to the other, andthus forming one continuous chamber within the piston-head, and at the same time it provides a support for the rod which carries the valves.
- a piston composed of two hollow end sections and a dividing-partition placed between them, a rod held by the partition and carrying valves.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Description
No. 683,469. Patented Oct. I901. J. IMLER.
ANTIFRIGTIUN STEAM PISTON HEAD.
(Application filed Jan. 11, 1901.
(No Model.)
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UNTTED STATES PATENT OFFICE.
JOSEPH IMLER, OF FORT WAYNE, INDIANA.
ANTIFRICTION STEAM PISTON-HEAD.
SPECIFICATION forming part of Letters Patent No. 683,469, dated October 1, 1901.
Application fil d January 11, 1901. Serial No. 42,893. (No model.)
T0 (LZZ whom it may concern;
Be it known that I, JOSEPH IMLER, a citizen of the United States, residing at Fort lV-ayne, in the county of Allen and State'of Indiana, have invented certain new and useful Improvements in Antifriction Steam Piston- IIeads; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.
My invention relates to steam piston-heads and is an improvement upon my application, Serial No. 23,472, filed July 13, 1900; and it consists in providing a hollow piston-head with a central diaphragm or partition, the diameter of which is considerably less than the end sections, thereby providing a continuous steam-chamber without diminishing the area of the piston-head.
Another object is to provide a novel means of mounting a valve-stem in the central diaphragm or partition and enable two valves to operate thereon.
Further objects and advantages will appear in the following description, and the novel features thereof will be particularly pointed out in the appended claims.
In the drawings, Figure 1 is a vertical longitudinal section of a piston-head which embodies my invention. Fig. 2 is an end view of the piston with one of the end sections re moved.
A represents a piston-head which is composed of the two hollow sections B and the central dividing-partition 0, all three parts of which are secured to the piston-rodD, which is passed through them and held by a nut at its end. These parts are also held together by clamping-bolts E, and these bolts are especially of advantage in large pistonheads, where the central nut is not strong enough to stand the strain. Each of the 1101- low sections is provided with a port F, leading from the outer side to the chamber H, and each section has a series of lugs or projections I, the ends of which engage the central partition C near its edge, and which lugs may also be provided with openings for the rod J, which acts as a valve-stem for the spring-pressed inwardly-opening valves K, mounted upon each end thereof and capable of longitudinal movement thereon. To prevent the springs from losing their resilience and to permit an even tension on them at all times, the valves are provided with an annular flange L, which envelops the spring, and
which flange abuts against the partition 0 when the valves open. This prevents the springs from being entirely collapsed.
As shown, the central partition is of less diameter than the inner edge of the chamfered portion of the end section and extends only to the edge of the lugs or projections, leaving space for the escape of the steam from one side of the section to the other, andthus forming one continuous chamber within the piston-head, and at the same time it provides a support for the rod which carries the valves.
When the piston is at the end of its stroke and steam is being admitted to the cylinder, one of the valves is opened and steam is ad mitted into the chamber, causing the valve on the opposite, side to close, and the steam is forced against the interior face of the opposite end section and circulates around the partition and completely fills the chamber. By means of these valves the chamber is always kept supplied with steam under pressure, and thus provides steam lubrication to the piston-head, for the steam passes between the ends of the end section to the inner sides of the cylinder, and the chamber being always filled with steam forms a cushion. to prevent friction and the dragging of the pistonhead upon the bottom of the cylinder, and thus enables the piston-head to be held in equilibrium. \Vhen the piston nears the end of its stroke, a portion of the trapped steam left in the cylinder after the exhaust-valve has closed is forced through the valve-openings and into the steam-chamber, and thus relieves the piston of the heavy back pressure of the trapped steam on the exhaust side.
Having described my invention, what I claim is 1. A piston composed of two hollow end sections and a dividing-partition placed between them, a rod held by the partition and carrying valves.
2. In a piston-head, the two hollow end sections and a central partition, a rod supported by the partition, and valves slidably mounted upon the rod.
8. In a piston-head, the two hollow end sec tions, and a central partition placed between them, the end sections being provided with ports, and the partition having means for carrying valves to control said ports, substantially as described.
4. In a piston-head, the two hollow end sections, and a central partition placed between them, the end sections being provided with ports, and the partition having a rod passed transversely through it,spring-pressed valves slidably mounted upon said rod and control ling said ports, substantially as described.
5.- In a piston-head, the two hollow end sections, and a central partition placed between them, the end sections being provided with ports, and the partition provided with means for carrying spring-pressed valves to control said ports, said valves having an annular flange to envelop the springs, substantially as described.
6. In a piston-head, the two hollow end sections, and a central partition placed between them, the partition carrying a rod; valves and coil-springs mounted upon the rod, and means to prevent the springs from being entirely collapsed upon the rod, substantially as described.
7. In a piston-head, the two hollow end sections,combined with a central partition placed between the sections, the end sections being provided with lugs or projections which bear against opposite sides of the central partition near its edge or periphery and leaving an unobstructed passage for the steam to all parts of the steam-chamber, substantially as shown.
8. In a piston-head, the two hollow end sections and a central partition placed between them, the end sections being provided with lugs or projections, and the partition being of less diameter than the chamfered inner edge of the end sections and being embraced by the lugs at its edge, thereby leaving an unobstructed passage for the steam to all parts of the chamber, combined with means for admitting the steam to the chamber and maintaining it there under pressure, substantially as described.
In testimony whereof I affix my signature in presence of two witnesses.
JOSEPH IMLER.
Witnesses:
THEODORE DALTON, L. S. BLACK.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US4289301A US683469A (en) | 1901-01-11 | 1901-01-11 | Antifriction steam piston-head. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US4289301A US683469A (en) | 1901-01-11 | 1901-01-11 | Antifriction steam piston-head. |
Publications (1)
Publication Number | Publication Date |
---|---|
US683469A true US683469A (en) | 1901-10-01 |
Family
ID=2752012
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US4289301A Expired - Lifetime US683469A (en) | 1901-01-11 | 1901-01-11 | Antifriction steam piston-head. |
Country Status (1)
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US (1) | US683469A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3319534A (en) * | 1965-01-29 | 1967-05-16 | Weston Instruments Inc | Piston |
-
1901
- 1901-01-11 US US4289301A patent/US683469A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3319534A (en) * | 1965-01-29 | 1967-05-16 | Weston Instruments Inc | Piston |
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