EP0005573A1 - Zeichenkopf für Zeichenmaschine - Google Patents

Zeichenkopf für Zeichenmaschine Download PDF

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Publication number
EP0005573A1
EP0005573A1 EP79200232A EP79200232A EP0005573A1 EP 0005573 A1 EP0005573 A1 EP 0005573A1 EP 79200232 A EP79200232 A EP 79200232A EP 79200232 A EP79200232 A EP 79200232A EP 0005573 A1 EP0005573 A1 EP 0005573A1
Authority
EP
European Patent Office
Prior art keywords
plate
teeth
plates
rapporteur
toothed
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.)
Withdrawn
Application number
EP79200232A
Other languages
English (en)
French (fr)
Inventor
Alain Maurice Bruneau
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.)
Alpia SA
Original Assignee
Alpia SA
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 Alpia SA filed Critical Alpia SA
Publication of EP0005573A1 publication Critical patent/EP0005573A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L13/00—Drawing instruments, or writing or drawing appliances or accessories not otherwise provided for
    • B43L13/02—Draughting machines or drawing devices for keeping parallelism
    • B43L13/08—Protractor heads

Definitions

  • the invention relates to drawing devices, particularly a rapporteur group for drawing board comprising, on either side of a support, two parts, connected to each other by a hub passing through said support, consisting on the one hand of a rule holder and on the other hand a handle which rotates a graduated plate opposite at least one scale.
  • Known devices have a certain number of predetermined angular positions, generally from 15 ° to 15 ° , and the snap-fastening in the chosen position is obtained by the placement of a pawl in a notch of a suitable crown.
  • the object of the present invention is to produce a precise snap-fastening, easy to engage in each predetermined angular position, without play and of long duration, the manufacture of which does not present any particular difficulties.
  • each of said parts comprises a circular toothed plate concentric with its axis of rotation, rotating in the same plane, each provided with the same number of radial teeth, and by the fact that a third circular plate, identically toothed, concentric with the other two, is provided with means making it possible to interpose its teeth between those of the other plates, so as to block the rule carrier in a determined angular position.
  • the main advantage of the reporter group according to the invention resides in the fact that the snap-fastening is achieved by the engagement of all the teeth of the intermediate plate in all the teeth of the other two plates, thus ensuring high precision protected from games due to long use.
  • the reporter group according to the invention essentially consists of a so-called fixed part comprising a rule holder A, a pad B carried by a support C 'which is provided with a toothed plate 1, and a rotating part comprising a handle D provided with a toothed plate 2 pivoting around a hub E.
  • the plates 1 and 2 are concentric with the hub E and in the same plane, parallel to the rules.
  • a third plate 3 identically toothed, concentric and parallel to the plates 1 and 2, movable between said plates perpendicular to the hub E, pushed towards the plate 1 by springs 4, meshes with the plates 1, 2 and makes them integral.
  • This plate 3 movable along the hub E, is suspended from a plate 7 by columns 8 passing through the base 9 of the control handle D and rotating with it.
  • the upward or downward movements of the plate 3 are obtained by a pressure exerted on a pusher 5 integrated in the handle D.
  • the translation of the pusher 5 acts on a lever 6 whose support point 60 is located on the base 9, below of the plate 7.
  • the arm 61 of the lever 6 pivots on a pin 51 of the pusher 5 and passes through an oblong opening 70 of the plate 7 so that its short arm 62 presses on the center 71 of plate 7 and lift it.
  • a recess 50 of the pusher 5 allows the support force to be maintained by the installation of a latch 10 in said recess.
  • the plate 3 can thus be kept clear to allow upe faster rotation of the rules.
  • the plate 3 By unlocking the pusher 5 the plate 3 will be pushed towards the fixed plate 1 and the teeth of one will mesh in the teeth of the other at the same time as in the teeth of the pivoting plate 2.
  • the snap-in position chosen predetermined will be maintained by all the teeth of the plates 1,2,3 whose contact surfaces are proportional to the number of teeth, which represents an important advantage compared to the pawl of known devices.
  • FIG. 2 represents an embodiment of the invention comprising an orientable zero.
  • the width of the teeth of the intermediate plate 3 is equal to the sum of the widths of the teeth of the two other plates 1,2.
  • the contact surface of the teeth of the intermediate plate 3 is substantially equal to the sum of the surfaces of the teeth of the other two plates 1,2.

Landscapes

  • A Measuring Device Byusing Mechanical Method (AREA)
  • Drawing Aids And Blackboards (AREA)
  • Food-Manufacturing Devices (AREA)
  • Length-Measuring Instruments Using Mechanical Means (AREA)
  • Toys (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
EP79200232A 1978-05-16 1979-05-11 Zeichenkopf für Zeichenmaschine Withdrawn EP0005573A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7815004A FR2425947A1 (fr) 1978-05-16 1978-05-16 Groupe rapporteur pour planche a dessiner
FR7815004 1978-05-16

Publications (1)

Publication Number Publication Date
EP0005573A1 true EP0005573A1 (de) 1979-11-28

Family

ID=9208491

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79200232A Withdrawn EP0005573A1 (de) 1978-05-16 1979-05-11 Zeichenkopf für Zeichenmaschine

Country Status (14)

Country Link
US (1) US4359824A (de)
EP (1) EP0005573A1 (de)
JP (1) JPS55500652A (de)
BE (1) BE62T1 (de)
CH (1) CH637575A5 (de)
DE (1) DE2953023C2 (de)
FR (1) FR2425947A1 (de)
GB (1) GB2045448B (de)
IT (1) IT1148298B (de)
NL (1) NL7915023A (de)
OA (1) OA06431A (de)
SE (1) SE8004443L (de)
SU (1) SU1074392A3 (de)
WO (1) WO1979001076A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3136872A1 (de) * 1981-09-17 1983-03-31 Möckel KG Feinmechanik, 6305 Buseck Zeichenkopf fuer eine zeichenmaschine
US5598557A (en) * 1992-09-22 1997-01-28 Caere Corporation Apparatus and method for retrieving and grouping images representing text files based on the relevance of key words extracted from a selected file to the text files

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2708791A (en) * 1947-05-03 1955-05-24 Universal Drafting Machine Cor Drafting machine
DE943396C (de) * 1953-01-25 1956-05-17 Faber Castell A W Einstellkopf fuer Zeichenmaschinen
US2900728A (en) * 1957-03-11 1959-08-25 Vard Products Inc Drafting machine indexing means

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2708791A (en) * 1947-05-03 1955-05-24 Universal Drafting Machine Cor Drafting machine
DE943396C (de) * 1953-01-25 1956-05-17 Faber Castell A W Einstellkopf fuer Zeichenmaschinen
US2900728A (en) * 1957-03-11 1959-08-25 Vard Products Inc Drafting machine indexing means

Also Published As

Publication number Publication date
JPS55500652A (de) 1980-09-18
DE2953023C2 (de) 1983-06-30
FR2425947B1 (de) 1980-10-31
BE62T1 (fr) 1980-04-25
US4359824A (en) 1982-11-23
DE2953023A1 (de) 1980-10-30
NL7915023A (nl) 1980-08-29
SE8004443L (sv) 1980-06-16
WO1979001076A1 (fr) 1979-12-13
IT8086256A0 (it) 1980-07-02
GB2045448A (en) 1980-10-29
GB2045448B (en) 1983-04-20
FR2425947A1 (fr) 1979-12-14
SU1074392A3 (ru) 1984-02-15
CH637575A5 (fr) 1983-08-15
OA06431A (fr) 1981-07-31
IT1148298B (it) 1986-11-26

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE GB IT LU NL SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

110E Request filed for conversion into a national patent application [according to art. 135 epc]
18D Application deemed to be withdrawn
RIN1 Information on inventor provided before grant (corrected)

Inventor name: BRUNEAU, ALAIN MAURICE