US159388A - Improvement in valves for engines - Google Patents

Improvement in valves for engines Download PDF

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Publication number
US159388A
US159388A US159388DA US159388A US 159388 A US159388 A US 159388A US 159388D A US159388D A US 159388DA US 159388 A US159388 A US 159388A
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Prior art keywords
valves
steam
engines
improvement
cylinder
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/04—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed
    • F15B11/046—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed depending on the position of the working member
    • F15B11/048—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed depending on the position of the working member with deceleration control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B47/00—Drives or gearings; Equipment therefor
    • B24B47/02—Drives or gearings; Equipment therefor for performing a reciprocating movement of carriages or work- tables
    • B24B47/06—Drives or gearings; Equipment therefor for performing a reciprocating movement of carriages or work- tables by liquid or gas pressure only

Definitions

  • This invention consists in a certain combination, with a balanced main piston-valve, oi' duplicate balanced piston-regulatin g valves and passages, controlled by the latter for adjusting the supply of steam to the main valve in accordance with the requirements of the engine, said combination forming avery simple, practical, and etlicient means, which not only embodies a balanced action of all the valves, but also a prompt regulation of the supply of steam to both ends ofthe main valve.
  • regulating-valves are shown as arranged vertically, and the main valve horizontally; but this relative position'ot said valves may be reversed; or all the valves may be disposed horizontally or otherwise.
  • Figure 1 represents a vertical longitudinal section
  • Fig. 2 a vertical transverse section, mainly through the cylinder of one of the regulating-valves
  • Fig. 3 ahorizontal section through the cylinder of the main valve.
  • A is the main inlet for the steam to a jacket or annular space, b, surrounding the central portion of the cylinder B, in which the main valve works.
  • passages d d are in communication with the cylinders O C of the regulating-valves.
  • These cylinders which are arranged at opposite ends of the main-valve cylinder B, are in constant communication, at their inner ends, with said cylinder B beyond the throw or working stroke of the main valve, and the passages d d not onlyconnect with the cylinders C C below the regulating-valves D D, but also, by branches e e, with the outer ends of said cylinders above the regulatingvalves.
  • the main valve G G which may be reciprocated by means ot' an eccentric, or oth-A erwise, and controls the ports ff, which lead to opposite ends of the engine-cylinder, and the general exhaust-passage g is composed ot duplicate pistons or heads, each formed with a-n annular exhaust-cavity, h. Said pistons or heads, a-s thus constructed and applied, will always be balanced, and are constantly exposed, at their outer opposite ends, to the incoming steam, each piston virtually forming a separate valve to its adjacent end ot' the engine-cylinder, thus economizing waste.
  • the regulating-valves D .D y are plain pistonvalves, and, accordingly as they are simultaneously worked in or out, serve to open, shut olf, or regulate the supply of steam by the passages d l to the cylinder of the main valves.
  • the regulating-valves D D are simultaneously Worked in or out, within their respective cylinders, by inclined slotted portions k 7c ot' a. slide, H, or by any other suitable means. They may thus be operated by hand, or by the governor of the engine.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust-Gas Circulating Devices (AREA)

Description

UNTTEE STATES PATENT QEEro'Eo JAMES BULGER, JR., OF WILLIAMSBURG, BROOKLYN, NEW YORK.
IMPROVEMENT IN VALVES FOR ENGINES.
Specification forming part of Letters Patent No. 159,388, dated February 2, 1875; application filed December 30, 1874.
To all whom it may concern:
Be it known that I, JAMES BULGER., Jr., of Williamsburg, Brooklyn, in the county of Kings and State of New York, have invented a certain new and useful Improvement in Valves for Steam-Engines; and I do hereby declare that the following is a full, clear, and exact description ot' the same, reference being had to the accompanying drawings, forming part of this specilication.
This invention consists in a certain combination, with a balanced main piston-valve, oi' duplicate balanced piston-regulatin g valves and passages, controlled by the latter for adjusting the supply of steam to the main valve in accordance with the requirements of the engine, said combination forming avery simple, practical, and etlicient means, which not only embodies a balanced action of all the valves, but also a prompt regulation of the supply of steam to both ends ofthe main valve.
In the accompanying drawing, the regulating-valves are shown as arranged vertically, and the main valve horizontally; but this relative position'ot said valves may be reversed; or all the valves may be disposed horizontally or otherwise.
Figure 1 represents a vertical longitudinal section; Fig. 2, a vertical transverse section, mainly through the cylinder of one of the regulating-valves, and Fig. 3 ahorizontal section through the cylinder of the main valve.
A is the main inlet for the steam to a jacket or annular space, b, surrounding the central portion of the cylinder B, in which the main valve works. In open connection with this annular space b are passages d d, which are in communication with the cylinders O C of the regulating-valves. These cylinders, which are arranged at opposite ends of the main-valve cylinder B, are in constant communication, at their inner ends, with said cylinder B beyond the throw or working stroke of the main valve, and the passages d d not onlyconnect with the cylinders C C below the regulating-valves D D, but also, by branches e e, with the outer ends of said cylinders above the regulatingvalves. The main valve G G, which may be reciprocated by means ot' an eccentric, or oth-A erwise, and controls the ports ff, which lead to opposite ends of the engine-cylinder, and the general exhaust-passage g is composed ot duplicate pistons or heads, each formed with a-n annular exhaust-cavity, h. Said pistons or heads, a-s thus constructed and applied, will always be balanced, and are constantly exposed, at their outer opposite ends, to the incoming steam, each piston virtually forming a separate valve to its adjacent end ot' the engine-cylinder, thus economizing waste.
As only the outer end otl the pistons operate over the ports and passage j' j' and g, exhaust-steam passing into the annular cavities h has no tendency to counteract the balanced action of the valve.
The regulating-valves D .D yare plain pistonvalves, and, accordingly as they are simultaneously worked in or out, serve to open, shut olf, or regulate the supply of steam by the passages d l to the cylinder of the main valves. As steam` passes to both ends of the regnlating-valves by the passages cl d and their branches ce, said valves are perfectly balanced as regards pressure. The regulating-valves D D are simultaneously Worked in or out, within their respective cylinders, by inclined slotted portions k 7c ot' a. slide, H, or by any other suitable means. They may thus be operated by hand, or by the governor of the engine.
I claim- 'Ihe combination, with the double-piston main valve G Gr, ofthe regulating piston-valves D D and the steam-passages Z d, with their branches e e, all for operation, in relation with each other and with the parts controlled by the main valves, substantially as shown and described.
JAMES BULGER, JR'.
Witnesses HENRY T. BROWN, MICHAEL RYAN.
US159388D Improvement in valves for engines Expired - Lifetime US159388A (en)

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