GB916912A - Improvements in combined air and hydraulic piston-and-cylinder devices - Google Patents

Improvements in combined air and hydraulic piston-and-cylinder devices

Info

Publication number
GB916912A
GB916912A GB1275958A GB1275958A GB916912A GB 916912 A GB916912 A GB 916912A GB 1275958 A GB1275958 A GB 1275958A GB 1275958 A GB1275958 A GB 1275958A GB 916912 A GB916912 A GB 916912A
Authority
GB
United Kingdom
Prior art keywords
ram
air
piston
pressure
space
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
GB1275958A
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
Priority to GB1275958A priority Critical patent/GB916912A/en
Publication of GB916912A publication Critical patent/GB916912A/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
    • F15B11/06—Servomotor systems without provision for follow-up action; Circuits therefor involving features specific to the use of a compressible medium, e.g. air, steam
    • F15B11/072—Combined pneumatic-hydraulic systems
    • F15B11/0725—Combined pneumatic-hydraulic systems with the driving energy being derived from a pneumatic system, a subsequent hydraulic system displacing or controlling the output element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/16—Control arrangements for fluid-driven presses
    • B30B15/165—Control arrangements for fluid-driven presses for pneumatically-hydraulically driven presses
    • 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
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/21—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge
    • F15B2211/216—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge the pressure sources being pneumatic-to-hydraulic converters
    • 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
    • F15B2211/7053—Double-acting output members

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Press Drives And Press Lines (AREA)

Abstract

916,912. Hydraulic intensifiers. TRYTHALL, W. J. C. April 21, 1959 [April 22, 1958], No. 12759/58. Class 69 (2). A combined air and hydraulic apparatus for operation of a machine, such as a press, comprises a cylinder 1 having a piston 7 adapted to be operated by air to move its rod 8 into a bore 9 in a work ram 2 to displace hydraulic fluid therefrom into an annular space 10 between the ram and a pressure pot 3 and apply a pressure stroke to the ram, and a second annular space 11 for the admission of air under pressure to retract the work ram 2 and piston 7. Air is supplied to the upper surface of the piston 7 which moves downwardly and the rod 8 displaces the hydraulic fluid in the bore 9 through radial passages 12 into the space 10 between seals 16 retained in position by plates 15a, 15b secured to the pressure pot 3 and ram 2, respectively, to provide the ram to which the tool is secured with an intensified pressure. The ram is retracted by air pressure supplied to the space 11 and the liquid is displaced from the space 10 to return the piston to its uppermost position. In alternative embodiments, the annular space 10 may be formed by a flexible diaphragm assembly or a ring or tyre moulded in rubber-like material.
GB1275958A 1958-04-22 1958-04-22 Improvements in combined air and hydraulic piston-and-cylinder devices Expired GB916912A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1275958A GB916912A (en) 1958-04-22 1958-04-22 Improvements in combined air and hydraulic piston-and-cylinder devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1275958A GB916912A (en) 1958-04-22 1958-04-22 Improvements in combined air and hydraulic piston-and-cylinder devices

Publications (1)

Publication Number Publication Date
GB916912A true GB916912A (en) 1963-01-30

Family

ID=10010604

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1275958A Expired GB916912A (en) 1958-04-22 1958-04-22 Improvements in combined air and hydraulic piston-and-cylinder devices

Country Status (1)

Country Link
GB (1) GB916912A (en)

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