EP0283676A2 - Perforateur pour lettre - Google Patents

Perforateur pour lettre Download PDF

Info

Publication number
EP0283676A2
EP0283676A2 EP88101341A EP88101341A EP0283676A2 EP 0283676 A2 EP0283676 A2 EP 0283676A2 EP 88101341 A EP88101341 A EP 88101341A EP 88101341 A EP88101341 A EP 88101341A EP 0283676 A2 EP0283676 A2 EP 0283676A2
Authority
EP
European Patent Office
Prior art keywords
punch
holding member
pressure body
head
letter
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.)
Granted
Application number
EP88101341A
Other languages
German (de)
English (en)
Other versions
EP0283676B1 (fr
EP0283676A3 (en
Inventor
Theodor Pflugfelder
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.)
Louis Leitz Firma
Original Assignee
Louis Leitz Firma
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 Louis Leitz Firma filed Critical Louis Leitz Firma
Priority to AT88101341T priority Critical patent/ATE64884T1/de
Publication of EP0283676A2 publication Critical patent/EP0283676A2/fr
Publication of EP0283676A3 publication Critical patent/EP0283676A3/de
Application granted granted Critical
Publication of EP0283676B1 publication Critical patent/EP0283676B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/32—Hand-held perforating or punching apparatus, e.g. awls
    • B26F1/36—Punching or perforating pliers

Definitions

  • the invention relates to a letter punch with a lower part, with a pressure lever articulated on bearing blocks of the lower part, and with punches which can be displaced in guides of the lower part and interact with matrices arranged in the lower part and on their head under the action of a pressure body arranged on the pressure lever against the restoring force of coil springs.
  • the invention has for its object to improve the known punchers in such a way that the occurrence of frictional forces aggravating the operation of the punchers and impairing the function are avoided.
  • the inventive solution is based on the knowledge that the force application point of the pressure body arranged on the pressure lever on the pressure stamp describes a pitch circle around the pivot point of the pressure lever in the course of a stroke and therefore exerts a transverse friction on the stamp head when the punch is moved vertically.
  • a convex curved surface against the end face of the pressure body and the punch head is arranged, which in turn can be tilted in one is arranged articulated on the pressure body and behind the punch head holding member.
  • the pressure body has a throat on its end face, into which the bridge member engages.
  • a further improvement in this respect is achieved in that the punch has a widened head relative to its shaft, and that the retaining member pushed onto the punch shaft with a bore can be pressed against the back of the punch head under the action of the helical spring.
  • the holding member is advantageously articulated on the pressure body by means of a pin which passes through an elongated hole in the holding member.
  • the elongated hole is oriented essentially transversely to the direction of displacement of the punch on the holding member.
  • the holding member has the shape of a U-shaped bow.
  • the web of the bracket engages behind the punch head, while the two legs protrude beyond the punch head.
  • the bridge member between them receiving lips, the spacing of which widens upwards to enable the tilting movement of the bridge member.
  • the lips can be punched out of the thigh material and bent out of it.
  • the punch opening formed thereby should have a smaller height than the bridge member, so that a completely closed cage is formed for the bridge member.
  • a slot through which the pin passes is expediently arranged in each leg of the U-shaped bent holding member.
  • the pin can additionally be mounted in a cheek of the pressure lever that overlaps the pressure body laterally.
  • the letter punch essentially consists of a lower part 1 made of sheet steel or cast aluminum, provided with matrices for the punch 5, not shown, on which a plate 2 made of cast aluminum is riveted or molded onto the guides for the punch 5.
  • a pressure lever 3 is mounted on the lateral bearing blocks 21 of the cast plate 2 by means of a continuous bolt 4.
  • a pressure element 31 is formed on the underside of the pressure lever 3 above each punch 5.
  • the downward-facing end face of the pressure body 31 has a groove 32, in which a bridge member 8, which has the shape of an upright, engages with its one convexly curved narrow side. With its opposite, also convexly curved narrow side, the bridge member 8 bears against the widened head 51 of the punch 5.
  • a retaining member 7 designed as a U-shaped bracket is used to hold the bridge member 8.
  • the retaining member 7 engages under the head 51 of the punch 5 with its web provided with a bore for the passage of the punch shaft 52.
  • the helical spring 6 surrounding the punch 5 is supported with its from the upper end against the web 73 of the holding member 7, while its lower end engages in an annular recess 22 of the steel plate 2 surrounding the punch 5.
  • the bridge member 8 can perform a tilting movement, the deflection of which is limited by lips 71 which are cut out of the legs 74 of the holding member 7 and bent inwards. In this way, the bridge member 8 rests with its convexly curved lower narrow surface against the end face of the head 51 of the punch 5 without changing its substantially linear contact with the punch head 51 when the punch is actuated.
  • an elongated hole 72 extending transversely to the direction of displacement of the punch 5 is recessed above the lips 71, into which a pressure element 31 and a side cheek 33 of the pressure lever are inserted 3 penetrating pin 9 engages.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
  • Paper (AREA)
  • Developing Agents For Electrophotography (AREA)
  • Mechanical Coupling Of Light Guides (AREA)
  • Undergarments, Swaddling Clothes, Handkerchiefs Or Underwear Materials (AREA)
EP88101341A 1987-03-25 1988-01-30 Perforateur pour lettre Expired - Lifetime EP0283676B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88101341T ATE64884T1 (de) 1987-03-25 1988-01-30 Brieflocher.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873709767 DE3709767A1 (de) 1987-03-25 1987-03-25 Brieflocher
DE3709767 1987-03-25

Publications (3)

Publication Number Publication Date
EP0283676A2 true EP0283676A2 (fr) 1988-09-28
EP0283676A3 EP0283676A3 (en) 1989-11-23
EP0283676B1 EP0283676B1 (fr) 1991-07-03

Family

ID=6323914

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88101341A Expired - Lifetime EP0283676B1 (fr) 1987-03-25 1988-01-30 Perforateur pour lettre

Country Status (5)

Country Link
EP (1) EP0283676B1 (fr)
JP (1) JPS63256398A (fr)
AT (1) ATE64884T1 (fr)
DE (2) DE3709767A1 (fr)
ES (1) ES2023958B3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6688199B2 (en) 2000-06-30 2004-02-10 Acco Brands, Inc. Four-bar upright punch
US7584878B2 (en) 2005-09-08 2009-09-08 Acco Brands Usa Llc Paper tool drive linkage

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5449763A (en) * 1991-10-10 1995-09-12 Henkel Corporation Preparation of alkylpolyglycosides
DE19518901A1 (de) * 1995-05-26 1996-11-28 Leitz Louis Kg Vorrichtung zum Entwerten von Chipkarten
US7942298B2 (en) 2005-09-08 2011-05-17 Acco Brands Usa Llc Paper processing tool with force reducing drive arrangement
US8122805B2 (en) 2007-12-12 2012-02-28 Acco Brands Usa Llc Paper processing tool with three-lever actuation

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3485130A (en) * 1967-05-09 1969-12-23 Arnold Neustadter Paper centering means for paper punch
AT303679B (de) * 1970-05-05 1972-12-11 Leitz Fa Louis Brieflocher

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB154255A (en) * 1920-04-20 1920-12-02 Lennox Liddell Improvements in and connected with paper punches

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3485130A (en) * 1967-05-09 1969-12-23 Arnold Neustadter Paper centering means for paper punch
AT303679B (de) * 1970-05-05 1972-12-11 Leitz Fa Louis Brieflocher

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6688199B2 (en) 2000-06-30 2004-02-10 Acco Brands, Inc. Four-bar upright punch
GB2379183B (en) * 2000-06-30 2004-10-13 Acco Brands Inc Four-bar upright punch
US7584878B2 (en) 2005-09-08 2009-09-08 Acco Brands Usa Llc Paper tool drive linkage

Also Published As

Publication number Publication date
DE3709767A1 (de) 1988-10-13
EP0283676B1 (fr) 1991-07-03
JPS63256398A (ja) 1988-10-24
EP0283676A3 (en) 1989-11-23
ATE64884T1 (de) 1991-07-15
DE3863450D1 (de) 1991-08-08
ES2023958B3 (es) 1992-02-16

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