EP0279193A2 - Perforateur pour lettre - Google Patents

Perforateur pour lettre Download PDF

Info

Publication number
EP0279193A2
EP0279193A2 EP88100745A EP88100745A EP0279193A2 EP 0279193 A2 EP0279193 A2 EP 0279193A2 EP 88100745 A EP88100745 A EP 88100745A EP 88100745 A EP88100745 A EP 88100745A EP 0279193 A2 EP0279193 A2 EP 0279193A2
Authority
EP
European Patent Office
Prior art keywords
pressure
punch
pressure plate
upper edge
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
EP88100745A
Other languages
German (de)
English (en)
Other versions
EP0279193B1 (fr
EP0279193A3 (en
Inventor
Gerhard Sixt
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 AT88100745T priority Critical patent/ATE75990T1/de
Publication of EP0279193A2 publication Critical patent/EP0279193A2/fr
Publication of EP0279193A3 publication Critical patent/EP0279193A3/de
Application granted granted Critical
Publication of EP0279193B1 publication Critical patent/EP0279193B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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 punch hole punch with a die for punching lower part and a pivotally mounted on cheek of the lower part, by means of a pressure member acting on the punch in axial guides of the lower part against the restoring force of coil springs pressure plate.
  • convexly curved pressure members are arranged either on the underside of the pressure plate designed as a one-armed lever, which abut against the flat or convexly curved end face of the punch.
  • the contact between the pressure members and the punch is therefore point or line-shaped, so that relatively high surface pressures occur.
  • the object of the invention is to improve the letter punch of the type specified at the outset in such a way that the occurrence of the frictional forces aggravating the actuation of the letter punch is avoided.
  • the invention is based on the idea that the pressure plate should not act directly, but indirectly via a pressure element which can be pivoted with respect to the pressure plate and the punch, in order to avoid the undesirable transverse friction forces when actuating the punch.
  • the pressure member is formed by a pressure rail aligned parallel to the pivot axis of the pressure plate, with its upper edge resting against the pressure plate and pivotable there, on the lower edge of which two downward-facing, engaging in cup-like depressions of the punch heads and engaging with its tip pivotally supporting pressure pins are arranged against the bottom.
  • the punch heads attached to the punch form a thickening which has an annular shoulder which serves as an abutment for the helical spring.
  • an elevation serving as an attachment to the upper edge of the pressure rail is provided on the underside of the pressure plate on at least one longitudinal side of the pressure rail.
  • a groove can also be provided in the pressure plate, into which the pressure rail engages with its upper edge.
  • the pressure rail is articulated with play in the region of its upper edge on side cheeks of the pressure plate.
  • the pressure rail can also protrude in the area of its upper edge in the recesses in the side cheeks of the pressure plate
  • the pins preferably rest with their lower edge against the lower recess edge.
  • the letter punch shown in the drawing consists essentially of a lower part 1 provided with side cheeks 2 and a pressure plate 3 hinged to the side cheeks 2 of the lower part 1.
  • the punch 4 is in its lower area in recesses 22 and in its upper, a wider head 7th having area between tabs 21 which are bent from the side cheeks 2 out.
  • a pressure rail 5 is provided which is aligned parallel to the pivot axis 32 of the pressure plate 3 and which has an upper edge in the region of one which is inwardly white Send bend 31 formed groove 33 abuts against the pressure plate 3, and on the lower edge 54 two downward, engaging in cup-like recesses 71 of the punch heads 7 and with their tip pivotally supporting pressure pegs are arranged.
  • the pressure rail 5 is provided in the region of its upper edge with pins 51 which protrude at the end and engage in recesses 35 in the side walls 36 of the pressure plate 3 with play.
  • the pins 51 are primarily used to prevent the punch 4 from losing contact with the pressure plate 3 if the punches 4 become jammed in the documents to be punched. Since, when the pressure plate 3 is actuated, the pressure rail 5 neither slides on the underside of the pressure plate 3 nor in the head 7 of the punch 4, but only executes a tilting movement, a perfect and lossless power transmission from the pressure plate 3 to the punch 4 is ensured.
  • the punch 4 are enclosed by a coil spring 6, the lower abutment is formed by a horizontal part of the lower part of the punch and the upper abutment by the annular shoulder of the head 7 of the punch 4.

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)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Paper (AREA)
  • Developing Agents For Electrophotography (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Forging (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)
EP88100745A 1987-02-14 1988-01-20 Perforateur pour lettre Expired - Lifetime EP0279193B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88100745T ATE75990T1 (de) 1987-02-14 1988-01-20 Brieflocher.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873704670 DE3704670A1 (de) 1987-02-14 1987-02-14 Brieflocher
DE3704670 1987-02-14

Publications (3)

Publication Number Publication Date
EP0279193A2 true EP0279193A2 (fr) 1988-08-24
EP0279193A3 EP0279193A3 (en) 1990-12-05
EP0279193B1 EP0279193B1 (fr) 1992-05-13

Family

ID=6320985

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88100745A Expired - Lifetime EP0279193B1 (fr) 1987-02-14 1988-01-20 Perforateur pour lettre

Country Status (5)

Country Link
EP (1) EP0279193B1 (fr)
JP (1) JPH0615160B2 (fr)
AT (1) ATE75990T1 (fr)
DE (2) DE3704670A1 (fr)
ES (1) ES2031536T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0487544B1 (fr) * 1989-08-14 1994-03-02 Louis Leitz KG Perforateur
GB2384738A (en) * 2002-01-31 2003-08-06 Acco Uk Ltd Improvements in or relating to hole punches

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115023591A (zh) * 2020-02-20 2022-09-06 日立安斯泰莫株式会社 热式流量计

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2275012A (en) * 1940-01-30 1942-03-03 Bates Mfg Co Perforator
US2433110A (en) * 1945-12-22 1947-12-23 Gardner Hyman Single hand operated card punch
GB1444366A (en) * 1973-01-24 1976-07-28 Hyde A Heginbotham W J Cutting tools for paper-punch devices and paper-punch devices incorporating such cutting tools
US4294152A (en) * 1979-05-16 1981-10-13 Land Donald E Film punch

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR517027A (fr) * 1920-06-11 1921-04-29 Lennox Liddell Perfectionnements aux appareils servant à perforer le papier

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2275012A (en) * 1940-01-30 1942-03-03 Bates Mfg Co Perforator
US2433110A (en) * 1945-12-22 1947-12-23 Gardner Hyman Single hand operated card punch
GB1444366A (en) * 1973-01-24 1976-07-28 Hyde A Heginbotham W J Cutting tools for paper-punch devices and paper-punch devices incorporating such cutting tools
US4294152A (en) * 1979-05-16 1981-10-13 Land Donald E Film punch

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0487544B1 (fr) * 1989-08-14 1994-03-02 Louis Leitz KG Perforateur
GB2384738A (en) * 2002-01-31 2003-08-06 Acco Uk Ltd Improvements in or relating to hole punches
GB2384738B (en) * 2002-01-31 2005-02-23 Acco Uk Ltd Improvements in or relating to hole punches

Also Published As

Publication number Publication date
EP0279193B1 (fr) 1992-05-13
ES2031536T3 (es) 1992-12-16
EP0279193A3 (en) 1990-12-05
JPH0615160B2 (ja) 1994-03-02
ATE75990T1 (de) 1992-05-15
DE3870905D1 (de) 1992-06-17
JPS63251198A (ja) 1988-10-18
DE3704670A1 (de) 1988-08-25

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