EP0072790A1 - Dispositif permettant le tracage de lignes paralleles equidistantes - Google Patents

Dispositif permettant le tracage de lignes paralleles equidistantes

Info

Publication number
EP0072790A1
EP0072790A1 EP19810900578 EP81900578A EP0072790A1 EP 0072790 A1 EP0072790 A1 EP 0072790A1 EP 19810900578 EP19810900578 EP 19810900578 EP 81900578 A EP81900578 A EP 81900578A EP 0072790 A1 EP0072790 A1 EP 0072790A1
Authority
EP
European Patent Office
Prior art keywords
spring clip
toothing
ruler
roller axis
gear
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Withdrawn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
EP19810900578
Other languages
German (de)
English (en)
Inventor
Veijo Hietala
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0072790A1 publication Critical patent/EP0072790A1/fr
Withdrawn legal-status Critical Current

Links

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
    • B43L7/00—Straightedges
    • B43L7/04—Straightedges with rollers

Definitions

  • the object of the invention is a device for drawing equidistant, parallel lines.
  • the said device is suited for example in mechanical drawing for hatching, outlining columns and other similar type of drawing.
  • the German Patent Publication no. 839 007 introduces a drawing device comprising a cylindrical ruler member and two gable members geared at its both ends.
  • a drawing device comprising a cylindrical ruler member and two gable members geared at its both ends.
  • the cylindrical member are formed longitudinal grooves, into which grooves are pressed the arrester springs located in the gable members.
  • the cylindrical member can be moved on the paper step by step.
  • the purpose of the present invention is, among other things to eliminate the above described drawbacks and to create a drafting device which is simple, light and handy to operate with one hand. This is achieved by -the novel features of the invention, which are mainly enlisted in the Patent Claim 1.
  • the present invention brings about remarkable advantages compared with the above described German device. It has already been pointed out that the device of the present invention is light and easy to handle. The invention inables the drafting device to be turned from a normal rolling ruler to a stepping ruler and the other way round just by a slight movement with the fingers. Thus the device of the present invention allows for noticeable time-saving in the drafting work.
  • Figure 1 is an illustration of the ruler plate and Figure 2 is an elevation view of the ruler plate along the line A-A of Figure 1.
  • the figures illustrate the ruler plate 1 comprising the drawing edge lb, provided with a millimeter scale, on, the opposite side of which edge is geared the axis 2 parallel to the drawing edge.
  • the rollers 3 which rollers have the same size and stick out somewhat from under the ruler plate. Resting on the said rollers the ruler moves on the drafting board maintaining its direction, in vertical position to the axis.
  • the ruler is guided to the desired spot by holding the handle knob with one hand, whereafter the ruler is locked in its place by pressing the drawing edge 1b against the paper, and the line is drawn with the other hand along the drawing edge.
  • the device comprises, according to the invention, a pedometer placed on the roller axis 2. It is formed for instance by the equidistant toothing 4 or other similar arrangement located on the roller axis, and against it is pressed the clutch 5b of the spring clip 5 attached to the ruler.
  • the spring clip locks the axis in its place by focusing the power of the spring in a gap between the teeth.
  • the device can be employed for drawing equidistant lines easily and rapidly. During the drawing of the lines it is even possible to return several steps backwards, to a position exactly the same as before.
  • the spaces between the lines can be enlarged by moving 2, 3 or more steps after each line.
  • the pedometer can be swithched off operation for example by releasing the spring clip form the toothing by the lever 6, or simply by turning the spring clip aside, off the toothing.
  • the device can be used as a normal rolling ruler.
  • roller axis can also be placed several pedometers for creating spaces fo different sizes between the lines.
  • the ruler can be provided with various auxiliary devices.
  • the millimeter scale 1c placed at right angles to the drawing edge, it is possible to choose other desired spaces of various sizes between the lines by visual estimation.
  • the dial scale 1d is necessary if it is required that the lines have a given bevel with respect to some other line.
  • the conventional plotting openings 1e located in the ruler plate can also be used in a more versatile manner in connection with the pedometer, for instance when drawing block diagrams, flow charts and surface symbols.
  • the handle knob If located in the middle of the ruler, on top of the axis, ensures an equally great fraction power for both of the rollers. In every respect it is preferable to manufacture the ruler of transparent material, for the ideal use of the various scales and plotting openings.
  • the spring clip can touch the toothing either from upwards or from below.
  • the release mechanism of the spring clip can be a turning arrangement, a lever or a wedge system.
  • the spring can be replaced by a lever clip provided with a separate spring, etc.
  • the substantial characteristic is, that essentially on the roller axis is located as a pedometer a mechanism, by which mechanism the rotating movement of the axis can be stopped at regular intervals with sufficient certainty in order to draw the equidistant lines.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Measurement Of Distances Traversed On The Ground (AREA)

Abstract

Dispositif permettant le tracage de lignes paralleles equidistantes comprenant une plaque de regle (1) reposant sur un axe de rouleau (2) et se deplacant en maintenant sa direction, et un engrenage (4) situe sur l'axe de rouleau (2) et servant de podometre sur lequel s'appuie l'embrayage (5b) d'une pince a ressort (5), la pince a ressort freinant le mouvement de rotation de l'axe de rouleau par echelons correspondant au creux entre les dents de l'engrenage. Afin de liberer la pince a ressort (5) de l'engrenage, le dispositif comprend un mecanisme de liberation, par exemple un levier (6) soulevant la pince a ressort (5) de l'engrenage, ou un dispositif permettant de decaler la pince a ressort (5) par rapport a l'engrenage (4).
EP19810900578 1981-02-20 1981-02-20 Dispositif permettant le tracage de lignes paralleles equidistantes Withdrawn EP0072790A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/FI1981/000012 WO1982002856A1 (fr) 1981-02-20 1981-02-20 Dispositif permettant le tracage de lignes paralleles equidistantes

Publications (1)

Publication Number Publication Date
EP0072790A1 true EP0072790A1 (fr) 1983-03-02

Family

ID=8556286

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19810900578 Withdrawn EP0072790A1 (fr) 1981-02-20 1981-02-20 Dispositif permettant le tracage de lignes paralleles equidistantes

Country Status (2)

Country Link
EP (1) EP0072790A1 (fr)
WO (1) WO1982002856A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989010848A1 (fr) * 1988-05-13 1989-11-16 Mclaughlin, James, Gregory Regle tournante
RU2479436C1 (ru) * 2011-09-01 2013-04-20 Анатолий Емельянович Слюсарь Роликовая линейка
CN109808373B (zh) * 2019-02-27 2024-04-09 长江大学 一种滚尺
CN112484674B (zh) * 2020-12-04 2022-06-21 孝感慧硕电子科技有限公司 一种检测电路板的锡膏印刷刮刀平整度的精密设备

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US684005A (en) * 1900-01-05 1901-10-08 David T Stokes Parallel-ruler.
US1064006A (en) * 1912-05-25 1913-06-10 Gustavo A Quiros Rule.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8202856A1 *

Also Published As

Publication number Publication date
WO1982002856A1 (fr) 1982-09-02

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Legal Events

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