US157671A - Improvement in steam cut-off valves - Google Patents

Improvement in steam cut-off valves Download PDF

Info

Publication number
US157671A
US157671A US157671DA US157671A US 157671 A US157671 A US 157671A US 157671D A US157671D A US 157671DA US 157671 A US157671 A US 157671A
Authority
US
United States
Prior art keywords
valve
steam
head
valves
improvement
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 US157671A publication Critical patent/US157671A/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
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B25/00—Regulating, controlling or safety means
    • 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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K7/00—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves
    • F16K7/12—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with flat, dished, or bowl-shaped diaphragm
    • F16K7/14—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with flat, dished, or bowl-shaped diaphragm arranged to be deformed against a flat seat
    • F16K7/16—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with flat, dished, or bowl-shaped diaphragm arranged to be deformed against a flat seat the diaphragm being mechanically actuated, e.g. by screw-spindle or cam

Definitions

  • the invention relates to a steam cut-off valve for steam-engines; and consists of a valve-chamber wherein is provided a valve having heads of different-diameters, and working upon bearings at each end, where steam ports and exits are properly provided, the base of the valve fitting over a conical stripper, through which passes a disconnected valve-stem, the upper end of which impinges upon the interior of the smaller head of the valve, its lower end being in contact with an eccentric.
  • the object of the invention is to secure a true connection, and avoid all loss of motion between the valve and eccentric of a steamengine by the employment of a valve having heads of varying diameters, operating in conjunction with a disconnected valve-rod impingin g upon an eccentric cam.
  • Figure 1 is a group of vertical longitudinal sections of a device embodying the elements of the invention.
  • Fig. 2 is a similar section of same assembled.
  • Fig. 3 is a section of same, showing exhaustconduit D.
  • a in the accompanying drawings is the port through which steam is admitted to the valve-chamber B, provided with the exhaustexits a and 12, leading to the exhaust-conduit D, and the ports (1 and 6, leading to the cylinder of the engine.
  • One end of the valve-chamber is closed properly by the head c, the other by the head I, at the center of thelatter there being provided the conical hollow stripper E, over which fits one end of the hollowvalve F, adjacent which parts thereof is formed the head I at the other end of the valve.
  • the disconnected valve-stem L impinges, on its lower end, upon an eccentric cam, L, its upper portions passing through the stripper E in a steam -tight manner, whence it extends upward, its upper extremity impinging against the bar h inside the head I of the valve F.
  • the rotation of the eccentric moves the valve toward the head c', opening the port d, the steam exhausting through the exit a. This movement continues until the head I comes in proper proximity to the head i.
  • the steam entering the cylinder as aforesaid, forces the piston-head toward the plane of the head 1, and, at the same time, drives the valve F toward the head I, the steam exhausting through the exit 1) until the descent of the head H closes the port 6, when the port dis thrown open, and the operation of raising the valve repeated.
  • the valve bears constantly upon the stem L, holding it in contact with the eccentric, which should have a driving power equal to the difference of steam-pressure acting upon the heads H and I.
  • the head H will cushion upon the stripper E.
  • the valve F is left open above, so as to permit the descent of condensed steam.

Landscapes

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

Description

UNITED STATES PATENT OFFICE.
JOHN BAILEY, OF WARSAW, ILLINOIS.
IMPROVEMENT IN STEAM CUT-OFF VALVES.
Specification forming part of Letters Patent No. 157,671, dated December 15, 1874; application filed August 15, 1874.
of which the following is a specification, reference being had to the accompanying draw- 1n gs.
The invention relates to a steam cut-off valve for steam-engines; and consists of a valve-chamber wherein is provided a valve having heads of different-diameters, and working upon bearings at each end, where steam ports and exits are properly provided, the base of the valve fitting over a conical stripper, through which passes a disconnected valve-stem, the upper end of which impinges upon the interior of the smaller head of the valve, its lower end being in contact with an eccentric.
The object of the invention is to secure a true connection, and avoid all loss of motion between the valve and eccentric of a steamengine by the employment of a valve having heads of varying diameters, operating in conjunction with a disconnected valve-rod impingin g upon an eccentric cam.
Figure 1 is a group of vertical longitudinal sections of a device embodying the elements of the invention. Fig. 2 is a similar section of same assembled. Fig. 3 is a section of same, showing exhaustconduit D.
A in the accompanying drawings is the port through which steam is admitted to the valve-chamber B, provided with the exhaustexits a and 12, leading to the exhaust-conduit D, and the ports (1 and 6, leading to the cylinder of the engine. One end of the valve-chamber is closed properly by the head c, the other by the head I, at the center of thelatter there being provided the conical hollow stripper E, over which fits one end of the hollowvalve F, adjacent which parts thereof is formed the head I at the other end of the valve. The disconnected valve-stem L impinges, on its lower end, upon an eccentric cam, L, its upper portions passing through the stripper E in a steam -tight manner, whence it extends upward, its upper extremity impinging against the bar h inside the head I of the valve F. v
The rotation of the eccentric moves the valve toward the head c', opening the port d, the steam exhausting through the exit a. This movement continues until the head I comes in proper proximity to the head i. The steam, entering the cylinder as aforesaid, forces the piston-head toward the plane of the head 1, and, at the same time, drives the valve F toward the head I, the steam exhausting through the exit 1) until the descent of the head H closes the port 6, when the port dis thrown open, and the operation of raising the valve repeated. Thus the valve bears constantly upon the stem L, holding it in contact with the eccentric, which should have a driving power equal to the difference of steam-pressure acting upon the heads H and I. The head H will cushion upon the stripper E. The valve F is left open above, so as to permit the descent of condensed steam.
What I claim as my invention, and desire
US157671D Improvement in steam cut-off valves Expired - Lifetime US157671A (en)

Publications (1)

Publication Number Publication Date
US157671A true US157671A (en) 1874-12-15

Family

ID=2227081

Family Applications (1)

Application Number Title Priority Date Filing Date
US157671D Expired - Lifetime US157671A (en) Improvement in steam cut-off valves

Country Status (1)

Country Link
US (1) US157671A (en)

Similar Documents

Publication Publication Date Title
US234649A (en) Steam-actuated valve
US683688A (en) Steam-engine.
US471882A (en) Steam-actuated valve for engines
US120033A (en) Improvement in valves for steam-engines
US102367A (en) William brown
US281665A (en) Valve for steam-engines
US459120A (en) Steam-actuated valve
US558199A (en) Valve for steam-pumps
US485267A (en) fletcher
US313445A (en) Geoegb w
US761607A (en) Steam-valve.
US286747A (en) Cut-off valve
US934360A (en) Valve-gear for turbines.
US726919A (en) Engine-valve.
US216030A (en) Improvement in oscillating valves
US247659A (en) Cut-off-valve gear
US344032A (en) Asjigstoe to the clarke
US149068A (en) Improvement in steam-engine valve-gears
US390819A (en) tayloe
US995173A (en) Rotary steam-engine.
US722970A (en) Valve for steam-engines.
US347874A (en) Steam-engine
US163090A (en) Improvement in valve-gears for steasvi-engines
US795466A (en) Steam-valve mechanism for deep-well pumps.
US567805A (en) Steam-engine