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
Other languages
English (en)
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/xx
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)
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 (nl) 1952-08-29 1972-04-14 Werkwijze voor het bereiden van fotografisch materiaal, alsmede fotografisch materiaal verkregen onder toepassing van deze werkwijze.

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 (enExample)
NL (1) NL173682C (enExample)

Also Published As

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

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