GB728235A - Improvements in punching and other machines - Google Patents

Improvements in punching and other machines

Info

Publication number
GB728235A
GB728235A GB21802/52A GB2180252A GB728235A GB 728235 A GB728235 A GB 728235A GB 21802/52 A GB21802/52 A GB 21802/52A GB 2180252 A GB2180252 A GB 2180252A GB 728235 A GB728235 A GB 728235A
Authority
GB
United Kingdom
Prior art keywords
liquid
punch
stripper
pressure
piston
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
GB21802/52A
Inventor
Paul H Taylor
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.)
WALES STRIPPIT CORP
Original Assignee
WALES STRIPPIT CORP
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 WALES STRIPPIT CORP filed Critical WALES STRIPPIT CORP
Priority to GB21802/52A priority Critical patent/GB728235A/en
Publication of GB728235A publication Critical patent/GB728235A/en
Priority to NLAANVRAGE7205094,A priority patent/NL173682C/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/24—Perforating, i.e. punching holes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
    • C08F283/06—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polyethers, polyoxymethylenes or polyacetals
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
    • G03C1/04—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with macromolecular additives; with layer-forming substances
    • G03C1/043—Polyalkylene oxides; Polyalkylene sulfides; Polyalkylene selenides; Polyalkylene tellurides

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Physics & Mathematics (AREA)
  • Materials Engineering (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Press Drives And Press Lines (AREA)

Abstract

728,235. Liquid springs. WALES-STRIPPIT CORPORATION. Aug. 29,1952, No. 21802/52. Class 108 (3). [Also in Group XXII] A punching or other machine having means for storing and releasing compressed liquid energy comprises a member reciprocable to effect a working stroke, a cylinder aocommodating a body of liquid and located wholly at one side of the said member and a piston within the cylinder connected to said member so that the liquid is compressed during the working stroke and thereafter expands to restore the member to its original position. As applied to a subpress punching machine, a punch 21 co-operating with a die 22 carries an offset piston 31 working in a cylinder 30 with a liquid reservoir 34. A stripper 29 actuated by a piston 32 is located on the punch by a ball 24 engaging grooves 25, 26 on the punch and stripper. On the downstroke of the press the punch is depressed and the stripper is lowered by the pressure of the liquid. When pressure is released from the punch the pressure of the liquid first raises the punch alone and later, through the ball 24, raises the stripper also. Specification 721,400 is referred to.
GB21802/52A 1952-08-29 1952-08-29 Improvements in punching and other machines Expired GB728235A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB21802/52A GB728235A (en) 1952-08-29 1952-08-29 Improvements in punching and other machines
NLAANVRAGE7205094,A NL173682C (en) 1952-08-29 1972-04-14 METHOD FOR PREPARING PHOTOGRAPHIC MATERIAL AND PHOTOGRAPHIC MATERIAL OBTAINED USING THIS METHOD

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB21802/52A GB728235A (en) 1952-08-29 1952-08-29 Improvements in punching and other machines
GB968671 1971-04-16

Publications (1)

Publication Number Publication Date
GB728235A true GB728235A (en) 1955-04-13

Family

ID=26243100

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21802/52A Expired GB728235A (en) 1952-08-29 1952-08-29 Improvements in punching and other machines

Country Status (2)

Country Link
GB (1) GB728235A (en)
NL (1) NL173682C (en)

Also Published As

Publication number Publication date
NL7205094A (en) 1972-10-18
NL173682B (en) 1983-09-16
NL173682C (en) 1984-02-16

Similar Documents

Publication Publication Date Title
GB1061343A (en) Improvements in or relating to presses
ES485531A1 (en) Forging press
GB1485245A (en) Punching presses
GB728235A (en) Improvements in punching and other machines
GB573132A (en) Improvements in and relating to mechanical presses
GB832026A (en) Arrangement in or relating to punches or the like machines
GB1016293A (en) Improvements in and relating to air-hydraulic rams
GB771014A (en) Hydraulically powered machine
GB1371390A (en) Hydraulic press
GB769308A (en) Improvements relating to pressure controlling or cushioning appliances
GB549115A (en) Improvements in and relating to fluid-operated presses
GB1172001A (en) Hydraulic Hand-Tools
GB1391496A (en) Punching machines for metal and other amterial
GB780103A (en) Braking device for printing presses
GB721400A (en) Improvements in punching machines
GB667301A (en) Improvements in or relating to machines for blanking and forming bottle caps
GB711196A (en) Improvements in or relating to stretching presses
GB1302404A (en)
SU98021A1 (en) Combined die for simultaneous cutting and drawing of sheet metal blanks
GB952217A (en) Reciprocable hydro-pneumatic spring
GB970080A (en) Improvements in or relating to drawing arrangements for workpiece-drawing presses
GB1099421A (en) Hydraulic stamping press
GB707617A (en) Ejecting mechanism for punch presses
GB869526A (en) Method of and device for fine stamping
GB826349A (en) Improvements relating to power operated clicking presses