US193736A - Improvement in steam-valves for pumping-engines - Google Patents

Improvement in steam-valves for pumping-engines Download PDF

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US193736A
US193736A US193736DA US193736A US 193736 A US193736 A US 193736A US 193736D A US193736D A US 193736DA US 193736 A US193736 A US 193736A
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steam
pumping
cylinder
engines
valves
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    • 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

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  • FIG. 1 is a longitudinal section of a steamcylinder of a iumping-engine containing my improvement.
  • Fig. 2 is an end elevation.
  • My invention relates to a novel method of operating the valves in steam pumping-engines and it consists in a circumferentiallygrooved piston-rod, which acts as a valve, and in passages that lead from the ends of the valve-chest to and across the cylintlerlieads, and to the exhaust-receiver of the cylinder, the said passages being crossed between the valve-chest and cylinder-heads.
  • A is a steamcylinder, containing the piston B, which is secured to a piston rod, 0, that extends through both heads of the cylinder.
  • a cylindrical valve chest, D containingthe valve E, which is placed within and moved by the piston F.
  • the valve E is similar to an ordinary D- valve, and when moved back and forth in its chest it admits steam to and exhausts it from the cylinder A in the usual way.
  • Ports G are made in the side of the valvechest, and connected with transverse passages a in the cylinder-heads by the crossed passages b, which are shown in dotted lines.
  • the passages a lead through the opening in the cylinder-heads, through which the piston-rod and over the valve E.
  • the groove 0 in the piston-rod coincides with the passage a in the cylinder-head, and steam escapes, through the exposed port G, passage b, and passage a, to the exhaust-receiver H, when the steam that leaks by the piston F drives it, together with the valve E, to the opposite end of the valvechest, and shifts the steam in the cylinder A, so that the piston B is propelled toward the opposite end of the cylinder, and the steam is exhausted from the valvechest in the same manner as before described.

Description

J. TREGONING. STEAM-VALVES FOR PUMPING-ENGINES.
No. 193,736, Patenlted July 31,1877.
- luvmom fiyW Amnuevs.
N- PEIERS, FHOTO-UTHOGRAPHER. WASHINGTON. D O
UNITED STATES JOHN TREGONING, 0F BROOKLYN, NEW YORK.
IMPROVEMENT IN STEAM- VALVES FOR PUMPING-ENGINES.
Specification forming part of Letters Patent No. 193,736, dated July 31, 1877; application filed June 11, 1877.
. of New York, have invented a new and Improved Valve for Pumping-Engine, of which the following is a specification Figure 1 is a longitudinal section of a steamcylinder of a iumping-engine containing my improvement. Fig. 2 is an end elevation.
Similar letters of reference indicate corresponding parts.
My invention relates to a novel method of operating the valves in steam pumping-engines and it consists in a circumferentiallygrooved piston-rod, which acts as a valve, and in passages that lead from the ends of the valve-chest to and across the cylintlerlieads, and to the exhaust-receiver of the cylinder, the said passages being crossed between the valve-chest and cylinder-heads.
Referring to the drawing, A is a steamcylinder, containing the piston B, which is secured to a piston rod, 0, that extends through both heads of the cylinder. At the top of this cylinder there is a cylindrical valve chest, D, containingthe valve E, which is placed within and moved by the piston F.
The valve E is similar to an ordinary D- valve, and when moved back and forth in its chest it admits steam to and exhausts it from the cylinder A in the usual way.
Ports G are made in the side of the valvechest, and connected with transverse passages a in the cylinder-heads by the crossed passages b, which are shown in dotted lines. The passages a, lead through the opening in the cylinder-heads, through which the piston-rod and over the valve E. When the piston arrives at the end of its stroke, the groove 0 in the piston-rod coincides with the passage a in the cylinder-head, and steam escapes, through the exposed port G, passage b, and passage a, to the exhaust-receiver H, when the steam that leaks by the piston F drives it, together with the valve E, to the opposite end of the valvechest, and shifts the steam in the cylinder A, so that the piston B is propelled toward the opposite end of the cylinder, and the steam is exhausted from the valvechest in the same manner as before described.
Having thus fully described my invention, 1 claim as new and desire to secure by Letters Patent The combination of the oircumferentiallygrooved piston-rod O, and the cylinder having passages to b, with the steam-chest and the valve E, as and for the purpose set forth.
JOHN TREGONING.
Witnesses:
G. SEDGWIOK, LEX. F. ROBERTS.
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