GB539159A - Improved mechanism for controlling the return valves of hydraulic presses - Google Patents

Improved mechanism for controlling the return valves of hydraulic presses

Info

Publication number
GB539159A
GB539159A GB373040A GB373040A GB539159A GB 539159 A GB539159 A GB 539159A GB 373040 A GB373040 A GB 373040A GB 373040 A GB373040 A GB 373040A GB 539159 A GB539159 A GB 539159A
Authority
GB
United Kingdom
Prior art keywords
pressure
valve
leading
press
hydraulic presses
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
GB373040A
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.)
TURNER TANNING MACH CO Ltd
Original Assignee
TURNER TANNING MACH CO Ltd
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 TURNER TANNING MACH CO Ltd filed Critical TURNER TANNING MACH CO Ltd
Priority to GB373040A priority Critical patent/GB539159A/en
Publication of GB539159A publication Critical patent/GB539159A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B30B15/18—Control arrangements for fluid-driven presses controlling the reciprocating motion of the ram
    • B30B15/183—Controlling the filling of the press cylinder during the approach stroke of the ram, e.g. prefill-valves

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)

Abstract

539,159. Hydraulic presses. TURNER TANNING MACHINERY CO.,Ltd., and SCHETTLER, G. A. Feb. 28, 1940, No. 3730. [Class 69 (ii)] The return valve 2 of a hydraulic press is operated automatically when a valve 11 is operated to relieve the pressure in a pipe 9 connected to the pressure line 7 leading from a pump and serving to supply pipes 8, 10, leading to the pressure cylinders of a press with two rams, or leading only to one cylinder. The pressure fluid from the pump can pass through ports 16 on a cylinder 13, and normally a plunger 14 with an enlarged head is depressed by fluid against the action of an adjustable spring 20 fitted in a cage 19 secured to a housing 1. On opening the valve 11 to relieve pressure in the pipe 7 the spring 20 raises the plunger 14 which opens the valve 2 allowing the liquid to return to the reservoir of the press.
GB373040A 1940-02-28 1940-02-28 Improved mechanism for controlling the return valves of hydraulic presses Expired GB539159A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB373040A GB539159A (en) 1940-02-28 1940-02-28 Improved mechanism for controlling the return valves of hydraulic presses

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB373040A GB539159A (en) 1940-02-28 1940-02-28 Improved mechanism for controlling the return valves of hydraulic presses

Publications (1)

Publication Number Publication Date
GB539159A true GB539159A (en) 1941-08-29

Family

ID=9763860

Family Applications (1)

Application Number Title Priority Date Filing Date
GB373040A Expired GB539159A (en) 1940-02-28 1940-02-28 Improved mechanism for controlling the return valves of hydraulic presses

Country Status (1)

Country Link
GB (1) GB539159A (en)

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