US425169A - Valve for steam-engines - Google Patents

Valve for steam-engines Download PDF

Info

Publication number
US425169A
US425169A US425169DA US425169A US 425169 A US425169 A US 425169A US 425169D A US425169D A US 425169DA US 425169 A US425169 A US 425169A
Authority
US
United States
Prior art keywords
valve
steam
piston
cylinder
port
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
Application number
Publication date
Application granted granted Critical
Publication of US425169A publication Critical patent/US425169A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • F01L25/00—Drive, or adjustment during the operation, or distribution or expansion valves by non-mechanical means
    • F01L25/02—Drive, or adjustment during the operation, or distribution or expansion valves by non-mechanical means by fluid means
    • F01L25/04—Drive, or adjustment during the operation, or distribution or expansion valves by non-mechanical means by fluid means by working-fluid of machine or engine, e.g. free-piston machine
    • F01L25/06—Arrangements with main and auxiliary valves, at least one of them being fluid-driven
    • F01L25/063—Arrangements with main and auxiliary valves, at least one of them being fluid-driven the auxiliary valve being actuated by the working motor-piston or piston-rod

Definitions

  • FIG. 1 is a side elevation of a steam-cylinder with my improvement applied.
  • Fig. 2 represents a side and end elevation of the valve-operating piston.
  • Fig. 3 is alongitudinal section of the cylinder and valve-chest.
  • Fig. 4. is a longitudinal section of the tappet valve casing.
  • Fig. 5 is a plan View of the same.
  • Fig. 6 is a longitudinal section of the tappet-valve casing.
  • Fig. 7 is a side elevation of the tappet-valve, and
  • Fig. 8 is a transverse section taken on line a: 00 in Fig. 7.
  • the object of my invention is to construct a steam-engine with automatic-valve mechanism which will be operative without the use of an eccentric or crank.
  • My invention consists in the combination,
  • the invention also consists in the combination, with the valve and valve-operating mechanism, of a starting-lever, all as will be hereinafter more fully described.
  • the cylinder A is provided with a steamchest 13, which covers the valve-seat C, and is provided with a cylinder D, in which slides the piston E.
  • the valve-seat C is provided with an exhaust-port F and with steam-ports a a, which communicate with the ends of the cylinder A. H
  • a double main valve G having the cavities Z) Z), and in the back of the said main valve G there is a cavity c for receiving the arm (1, the said arm cl being mounted on the shaft 8, which extends through the side of the valve-chest and is provided with a startingdever II.
  • the piston E is provided with two heads f SerialNo. 313,739. (No model.)
  • the heads ff of the piston E are formed diagonal passages 17 i, through which steam is admitted to the spaces g g at the end of the steam-chest B.
  • live-steam ports j j and exhaust ports 76 7a are formed in the lower part of the cylinder D in the lower part of the cylinder D.
  • valve-casings Z In the top of the cylinder A, underneath the rear ports 1: 7c, are inserted valve-casings Z, provided with a valve-seat m, to which is fitted a tappet-valve a, which is pressed to its seat by a spiral spring 0, resting upon the valve and abutting against the under surface of the valve-chest.
  • the valve-casingl extends into the cylinder, the said casing communicating with the port a upon one end of the cylinder and with the port a at the opposite end.
  • each valve n extends into the path of the power-piston I, the said powerpiston having beveled ends (1 for engaging the valve-stems p as the piston nears the end of its stroke in either direction.
  • the piston I is moved forward, while the other parts of the engine are stationary; but when the said piston I engages the stem 12 of the valve n at the forward end of the cylinder it pushes the valve up, openin g communication between the space g and the port a through the casing Z and port 70', thereby allowing steam to escape from the said space g into the exhaust-port F through the port a and into the space g by the closing of the exhaustport L by the piston itself arrests the motion of the piston, and when thepassage iand port j coincide live steam is admitted to the space g; but, the pressure upon opposite ends of the piston E being practically equalized, the said piston does not move until the powerpiston I nears the end of its rearward stroke, when it engages the valve-stem p of the 'alve a at that end of the cylinder, when the steam is allowed to escape from the space g, and what was described in connection with the forward end of the cylinder now happens at the rear end of the cylinder.
  • the engine is started by the admission of steam to the steam-chest and shifting-valve G by means of the starting lever II.
  • My improved valve mechanism for steamengines is particularly adapted for use in connection with steam-pumps; but Ido not limit or confine myself to this use of my improvement.
  • valve-operating mechanism for steamengines the combination, with the cylinder A and the steam-chest B, provided with the valve-seat (l, and cylinder I), having ports j 7" is k, of the main valve G, fitted to the seat (1-, the piston E, having the mortise h for receiving the back of the valve G and provided with passages i i, the valve-casings Z, arranged to communicate with the exhaustports 7: 7t and with the ports we, the springpressed tappet-valves 12 contained by the casings Z, and the power-piston I, having beveled ends q, adapted to engage the stems of the valves 01, substantially as specified.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lift Valve (AREA)

Description

(No Model.) 2 Sheets-Sheet 2. W. GEHRING. VALVE FOR STEAM ENGINES.
Patented Apr. 8, 1890.
ATTORNEY WITNESSES:
UNITED STATES PATENT OFFICE.
\VILLIAM GEHRING, OF SAN DIEGO, CALIFORNIA.
VALVE FOR STEAM-ENGINES.
SPECIFICATION forming part of Letters Patent No. 425,169, dated April 8, 1890.
Application filed June 10, 1889.
To all whom it may concern:
Be it known that 1, WILLIAM GEHRING, of San Diego, in the county of San Diego and State of California, have invented a new and Improved Valve for Steam-Engines, of which the following is a specification, reference being had to the annexed. drawings, forming a part thereof, in which- Figure 1 is a side elevation of a steam-cylinder with my improvement applied. Fig. 2 represents a side and end elevation of the valve-operating piston. Fig. 3 is alongitudinal section of the cylinder and valve-chest. Fig. 4.is a longitudinal section of the tappet valve casing. Fig. 5 is a plan View of the same. Fig. 6 is a longitudinal section of the tappet-valve casing. Fig. 7 is a side elevation of the tappet-valve, and Fig. 8 is a transverse section taken on line a: 00 in Fig. 7.
Similar letters of reference indicate corresponding parts in all the views.
The object of my invention is to construct a steam-engine with automatic-valve mechanism which will be operative without the use of an eccentric or crank.
-. My invention consists in the combination,
with the steam-cylinder, of a steam-chest containing a D-valve, a piston adapted to move the D -valve, and tappet-valves arranged to be operated by the power-piston, so as to admit steam to the space at the ends of the valveoperating piston.
The invention also consists in the combination, with the valve and valve-operating mechanism, of a starting-lever, all as will be hereinafter more fully described.
The cylinder A is provided with a steamchest 13, which covers the valve-seat C, and is provided with a cylinder D, in which slides the piston E. The valve-seat C is provided with an exhaust-port F and with steam-ports a a, which communicate with the ends of the cylinder A. H
To the valve-seat C is fitted a double main valve G, having the cavities Z) Z), and in the back of the said main valve G there is a cavity c for receiving the arm (1, the said arm cl being mounted on the shaft 8, which extends through the side of the valve-chest and is provided with a startingdever II.
The piston E is provided with two heads f SerialNo. 313,739. (No model.)
f, which move in the spaces 9 g, and at the middle of its length it is provided with amortise h for receiving the rectangular back of the main valve G.
I11 the heads ff of the piston E are formed diagonal passages 17 i, through which steam is admitted to the spaces g g at the end of the steam-chest B.
In the lower part of the cylinder D are formed live-steam ports j j and exhaust ports 76 7a.
In the top of the cylinder A, underneath the rear ports 1: 7c, are inserted valve-casings Z, provided with a valve-seat m, to which is fitted a tappet-valve a, which is pressed to its seat by a spiral spring 0, resting upon the valve and abutting against the under surface of the valve-chest. The valve-casingl extends into the cylinder, the said casing communicating with the port a upon one end of the cylinder and with the port a at the opposite end. The vah'e-stem p of each valve n extends into the path of the power-piston I, the said powerpiston having beveled ends (1 for engaging the valve-stems p as the piston nears the end of its stroke in either direction.
The operation of my improved valve mechanism is as follows: Steam being admitted to the steam-chest B, it passes underneath the valve G, through the cavity 1) of the valve and port a of the cylinder into the back end of the cylinder, pushing the piston forward. At the same time the used steam is passing out through the port a and cavity 1) of the valve 0 into the exhaust-port F, the space 9 at the ends of the valve-operating piston E being filled with steam. \Vhile the piston E is in this position steam is entering the space g at the opposite end of the piston through the passage 2' and port j, thus practically balancing the pressure upon the opposite ends of the piston E. Under these conditions the piston I is moved forward, while the other parts of the engine are stationary; but when the said piston I engages the stem 12 of the valve n at the forward end of the cylinder it pushes the valve up, openin g communication between the space g and the port a through the casing Z and port 70', thereby allowing steam to escape from the said space g into the exhaust-port F through the port a and into the space g by the closing of the exhaustport L by the piston itself arrests the motion of the piston, and when thepassage iand port j coincide live steam is admitted to the space g; but, the pressure upon opposite ends of the piston E being practically equalized, the said piston does not move until the powerpiston I nears the end of its rearward stroke, when it engages the valve-stem p of the 'alve a at that end of the cylinder, when the steam is allowed to escape from the space g, and what was described in connection with the forward end of the cylinder now happens at the rear end of the cylinder.
The engine is started by the admission of steam to the steam-chest and shifting-valve G by means of the starting lever II.
My improved valve mechanism for steamengines is particularly adapted for use in connection with steam-pumps; but Ido not limit or confine myself to this use of my improvement.
Having thus described my invention, I claim as new and desire to secure by Letterslatent- 1. In a valve operating mechanism for steam-engines, the combination, with the cylinder and its piston, of the steam-ehest I provided with the valve-seat 0, having ports a a I and with the cylinder 1), having the ports jj I; k','valve-casings in the top of: the cylinder, under the ports k k and communicating with ports a a, spring-pressed valves in said casings, the valve G, provided with cavities Z2 Z2, and the piston E, having ports i t" in its heads and connected with the valve G, substantially as described.
2. In valve-operating mechanism for steamengines, the combination, with the cylinder A and the steam-chest B, provided with the valve-seat (l, and cylinder I), having ports j 7" is k, of the main valve G, fitted to the seat (1-, the piston E, having the mortise h for receiving the back of the valve G and provided with passages i i, the valve-casings Z, arranged to communicate with the exhaustports 7: 7t and with the ports we, the springpressed tappet-valves 12 contained by the casings Z, and the power-piston I, having beveled ends q, adapted to engage the stems of the valves 01, substantially as specified.
WILLIAM GEIIRING. \Vitnesses:
CHARLES LEONARD'I, M. l). FAU'LK.
US425169D Valve for steam-engines Expired - Lifetime US425169A (en)

Publications (1)

Publication Number Publication Date
US425169A true US425169A (en) 1890-04-08

Family

ID=2494083

Family Applications (1)

Application Number Title Priority Date Filing Date
US425169D Expired - Lifetime US425169A (en) Valve for steam-engines

Country Status (1)

Country Link
US (1) US425169A (en)

Similar Documents

Publication Publication Date Title
US425169A (en) Valve for steam-engines
US123174A (en) Improvement in valves for steam-engines
US382168A (en) Valve-gear
US149067A (en) Improvement in steam-engine valve-gears
US162714A (en) Improvement in balanced and cut-off valves
US471882A (en) Steam-actuated valve for engines
US133121A (en) Improvement in valve-gearings
US400919A (en) Valve for steam-engines
US284744A (en) Steam-actuated valve for pumps
US307006A (en) Steam-actuated valve for pumping-engines
US129726A (en) Improvement in slide-valves
US200855A (en) Improvement in valves for steam-engines
US328787A (en) Daniel p
US193600A (en) Improvement in valves for direct-acting pumps
US459120A (en) Steam-actuated valve
US164804A (en) Improvement in steam-engines
US603399A (en) Valve-operating device
US242440A (en) eyans
US623168A (en) Engine
US45820A (en) Improvement in valves for steam-engines
US178648A (en) Improvement in valves for steam-pumps
US216515A (en) Improvement in steam-valves
US485579A (en) Ernest c
US411631A (en) Steam-heating apparatus
US469173A (en) Steam-engine valve