GB191221945A - Improved Arrangements for Controlling the Pressure Water of Hydraulic Machines. - Google Patents

Improved Arrangements for Controlling the Pressure Water of Hydraulic Machines.

Info

Publication number
GB191221945A
GB191221945A GB191221945DA GB191221945A GB 191221945 A GB191221945 A GB 191221945A GB 191221945D A GB191221945D A GB 191221945DA GB 191221945 A GB191221945 A GB 191221945A
Authority
GB
United Kingdom
Prior art keywords
ram
pressure water
pressure
pipe
cylinder
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
Application number
Inventor
George Homeyard
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of GB191221945A publication Critical patent/GB191221945A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F15B11/028—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force
    • F15B11/036—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force by means of servomotors having a plurality of working chambers
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/30505—Non-return valves, i.e. check valves
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/505—Pressure control characterised by the type of pressure control means
    • F15B2211/50554—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure downstream of the pressure control means, e.g. pressure reducing valve
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7051—Linear output members
    • F15B2211/7055—Linear output members having more than two chambers
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/775—Combined control, e.g. control of speed and force for providing a high speed approach stroke with low force followed by a low speed working stroke with high force, e.g. for a hydraulic press

Abstract

21,945. Homeyard, G. Sept. 26. Presses, cylinder-and-pisto; producing part of stroke hydraulically.-In hydraulic presses in which the main ram is brought up to the work by an auxiliary high-pressure ram, the main ram meanwhile drawing in a supply of low-pressure water, all the high-pressure water for the main and auxiliary rams passes through the controlling- valve. The auxiliary ram is made movable and is acted upon on both sides by pressure. The Figure shows the main ram a attached to an auxiliary ram b. The low-pressure check valve m controls communication between the cylinder c and the low-pressure supply. The exhaust check valve j is housed in a casing f, to which are secured the pipe h leading to the working valve, and the pipe k leading to the auxiliary cylinder. A branch l from the pipe k leads to the spring-loaded valve o. High-pressure water fed through the pipes h, k first forces the piston b down, low-pressure water meanwhile filling the cylinder c. When the ram a comes into contact with the work, the pressure on top of the ram b rises and causes the valve o to open, admitting high-pressure water to the cylinder c. In order to raise the ram a, the pipe h is opened to exhaust and high-pressure water fed through the pipe n.
GB191221945D 1912-09-26 1912-09-26 Improved Arrangements for Controlling the Pressure Water of Hydraulic Machines. Expired GB191221945A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191221945T 1912-09-26

Publications (1)

Publication Number Publication Date
GB191221945A true GB191221945A (en) 1913-07-31

Family

ID=32369413

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191221945D Expired GB191221945A (en) 1912-09-26 1912-09-26 Improved Arrangements for Controlling the Pressure Water of Hydraulic Machines.

Country Status (1)

Country Link
GB (1) GB191221945A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0327666A1 (en) * 1988-02-02 1989-08-16 Josef Nusser Hydraulic drive

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0327666A1 (en) * 1988-02-02 1989-08-16 Josef Nusser Hydraulic drive

Similar Documents

Publication Publication Date Title
GB1230218A (en)
GB1205415A (en) Improvements in or relating to forming machines
GB191221945A (en) Improved Arrangements for Controlling the Pressure Water of Hydraulic Machines.
GB1497938A (en) Punching presses
GB667323A (en) Improvements relating to bending machines
US2404611A (en) Booster ram adjustment
GB191017854A (en) Improvements in Valves for Controlling the Pressure Water of Hydraulic Machines.
US2410581A (en) Hydraulic press
GB191020320A (en) Improvements in Matrix Drying Presses.
US1412069A (en) Automatic control for hydraulic pumps
GB190525221A (en) Improvements in or relating to Hydraulic Presses and like Hydraulic Machines.
SU1574481A1 (en) Arrangement for damping shock in blanking on press
GB191123596A (en) Improvements in Steam Forging Presses.
GB189805135A (en) Improvements in Hydraulic Presses for Forging and Analogous Purposes.
US2862266A (en) Pressure diecasting machine
GB191509289A (en) Device for Economising Pressure Liquid for Hydraulic Apparatus supplied by a Single Circuit.
GB189805279A (en) Improvements in Presses, Power Hammers, and similar Apparatus.
GB509322A (en) Improvements relating to presses for pressing or drawing sheet-metal or the like
GB190122065A (en) Improved Method and Means of Operating Hydraulic Pressure Machinery by Means of Steam.
SU719858A1 (en) Device for balancing movable assemblies in metal cutting machine tools
GB151839A (en) An arrangement of valves for controlling the admission of high and low pressure liquid to hydraulic presses
GB198112A (en) Improvements in or relating to the arrangement of valves for controlling the admission of high and low pressure liquid to hydraulic presses
GB190702268A (en) Improvements in Hydraulic Press Mechanism
GB473450A (en) Double acting press
GB189708910A (en) An Improved Method of Working Hydraulic Presses, and Apparatus for use in connection therewith.