DE905888C - Drawing rulers made of thermoplastic material - Google Patents

Drawing rulers made of thermoplastic material

Info

Publication number
DE905888C
DE905888C DEN4394A DEN0004394A DE905888C DE 905888 C DE905888 C DE 905888C DE N4394 A DEN4394 A DE N4394A DE N0004394 A DEN0004394 A DE N0004394A DE 905888 C DE905888 C DE 905888C
Authority
DE
Germany
Prior art keywords
scale
wing
profile
same
thermoplastic material
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
DEN4394A
Other languages
German (de)
Inventor
Wilhelm Stahl
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.)
Albert Nestler AG
Original Assignee
Albert Nestler AG
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 Albert Nestler AG filed Critical Albert Nestler AG
Priority to DEN4394A priority Critical patent/DE905888C/en
Application granted granted Critical
Publication of DE905888C publication Critical patent/DE905888C/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B3/00—Measuring instruments characterised by the use of mechanical techniques
    • G01B3/02—Rulers with scales or marks for direct reading
    • G01B3/04—Rulers with scales or marks for direct reading rigid
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Paper (AREA)

Description

Die Erfindung betrifft einen Zeichenmaßstab aus thermoplastischer Kunststoffmasse mit die Auflegekanten des Maßstabes au fwe i senden flügel artigen Profilteilen. The invention relates to a thermoplastic drawing rule Plastic compound with the contact edges of the scale on fwe i send wing-like Profile parts.

Es sind Zeichenmaßstäbe bekannt, die aus einer dachförmig gebogenen Kunststoffleiste bestehen, deren flügelartig abstehende Profilteile die Au legekanten des Maßstabes aufweisen. There are drawing rulers known that consist of a roof-shaped curved There are plastic strips, the wing-like protruding profile parts of which the Au laying edges of the scale.

Der Erfindung liegt die Aufgabe zugrunde, einen Zeichenmaßstab aus Kunststoff so auszubilden, daß ein Verziehen des Maßstabes bei der Herstellung, insbesondere unter den beim Erkalten der Kunststoffmasse im Zeichenmaßstab auftretenden Spannungen, ausgeschlossen ist und daß eine leichtere Handhabung des Maßstabes ermöglicht wird. The invention is based on the object of a drawing scale To form plastic in such a way that distortion of the scale during manufacture, especially among those that occur on a drawing scale when the plastic compound cools Tensions, is excluded and that allows easier handling of the scale will.

Die Lösung dieser Aufgabe wird dadurch ermöglicht, daß dem Maßstab eine Form gegeben wird, bei der sich die das Verbiegen bewirkenden inneren Spannungen weitgehend auslgleichen. Eine der artige Ausführungsform besteht darin, daß der die flügel artigen Profilteile verbindende Mittelteil des Maßstabes ein doppel-T-artiges, hantelförmiges Grundprofil aufweist, das aus einem Steg und zwei an den Enden desselben angeordnetenW'ulstprofllen von gleicher oder annähernd gleicher Form und Fläche besteht. The solution to this problem is made possible by the fact that the scale a shape is given in which the internal stresses causing the bending largely compensate. One of the like embodiment is that the the wing-like profile parts connecting the middle part of the scale a double-T-like, Has dumbbell-shaped base profile, which consists of a web and two at the ends of the same arranged bead profiles of the same or approximately the same shape and area consists.

In der Zeichnung sind zum Vergleich bekannte Maßstäbe und ein Ausführungsbeispiel eines Zeichenmaßstabes gemäß der Erfindung teilweise dargestellt. Es zeigen Fig. I und 2 Zeichenmaßstäbe mit an sich bekannten Profilformen, Fig. 3 einen Maßstab gemäß der Erfindung. Known scales and an exemplary embodiment are shown in the drawing for comparison a drawing scale according to the invention partially shown. It shows Fig. I and 2 drawing scales with profile shapes known per se, FIG. 3 a scale according to the invention.

Der Maßstab nach Fig. 1 weist ein gleichschenkliges Trapez als Profil auf, während der Maßstab nach Fig. 2 einen im wesentlichen dreieckförmig begrenzten Unterteil und eine Koplfleiste aufweist. The scale according to FIG. 1 has an isosceles trapezoid as a profile on, while the scale of FIG. 2 is a substantially triangular delimited Has lower part and a head bar.

Beide Formen lassen sich aus thermoplastischer Kunststoffmasse nicht einwandfrei herstellen.Both forms cannot be made from thermoplastic plastic mass to produce flawlessly.

Die Stoffverteilung beim Maßstab gemäß Fig. 3 ist eine wesentlich andere. Er besitzt auch ein im wesentlichen dreieckförmig begrenztes Unterteil und eine Kopfleiste 1. Das doppel-T-artige Grundprofil besteht aus Idem Steg 4 und zwei mit den Flanschen eines Doppel-T-Trägers zu vergleichenden Wulstprofilen 9 und 10, die gleiche oder annähernd gleiche Form und Flächengröße aufweisen. The distribution of substances on the scale according to FIG. 3 is essential other. It also has a substantially triangularly delimited lower part and a head bar 1. The double-T-like base profile consists of Idem web 4 and two with the flanges of a double T-beam to be compared with bulge profiles 9 and 10, have the same or approximately the same shape and area size.

Symmetrisch zum Grundprofil sind flügelartige Profilteile 2 und 3 angeordne-t, Sie weisen die Auflagekanten 5 und 6 des Maßstabes auf. Unterhalb der flügel artigen Profilteile verbleibt der mit 8 bezeichnete Hohlraum. Wing-like profile parts 2 and 3 are symmetrical to the basic profile arranged-t, they have the support edges 5 and 6 of the scale. Below the Wing-like profile parts, the cavity designated 8 remains.

Claims (1)

PATENTANSPRUCH: Zeichenmaßstab aus thermoplastischer Kunststoffmasse mit dieAuflegekanten des Maßstabes aufweisenden flügel artigen Profilteilen, dadurch gekennzeichnet, daß der die flügel artigen Profilteile verbindende Mittelteil des Maßstabes ein doppel-T-artilges, hantelförmiges Grundprofil aufweist, das aus--einem Steg und zwei an den Enden desselben angeordneten Wulstprofiien von gleicher oder annähernd gleicher Form und Fläche besteht. ~~~~~~~~ Angezogene Druckschriften : Kataloge der Fa. A. W. Faber-Castell Nr. C 18 und Nr. 4; deutsche Patentschrift Nr. 544 426. PATENT CLAIM: Drawing rule made of thermoplastic plastic compound with wing-like profile parts having the supporting edges of the scale, thereby characterized in that the wing-like profile parts connecting the middle part of the Scale has a double-T-shaped, dumbbell-shaped basic profile that consists of - one Web and two bead profiles arranged at the ends of the same or of the same or consists of approximately the same shape and area. ~~~~~~~~ Printed publications: Catalogs from A. W. Faber-Castell No. C 18 and No. 4; German patent specification No. 544 426.
DEN4394A 1951-09-08 1951-09-08 Drawing rulers made of thermoplastic material Expired DE905888C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEN4394A DE905888C (en) 1951-09-08 1951-09-08 Drawing rulers made of thermoplastic material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEN4394A DE905888C (en) 1951-09-08 1951-09-08 Drawing rulers made of thermoplastic material

Publications (1)

Publication Number Publication Date
DE905888C true DE905888C (en) 1954-03-08

Family

ID=7338304

Family Applications (1)

Application Number Title Priority Date Filing Date
DEN4394A Expired DE905888C (en) 1951-09-08 1951-09-08 Drawing rulers made of thermoplastic material

Country Status (1)

Country Link
DE (1) DE905888C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3406456A (en) * 1967-05-12 1968-10-22 Qps Inc Guide for cutting paper and the like
US5475931A (en) * 1994-08-08 1995-12-19 Wei; Ching-Lin Multifunctional drawing implement box
US6782629B2 (en) 2001-05-10 2004-08-31 The Stanley Works Straight edge to facilitate holding and measuring and to provide protection when cutting

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE544426C (en) * 1929-10-04 1932-02-18 Franz Kuhlmann Ruler, especially for drawing devices

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE544426C (en) * 1929-10-04 1932-02-18 Franz Kuhlmann Ruler, especially for drawing devices

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3406456A (en) * 1967-05-12 1968-10-22 Qps Inc Guide for cutting paper and the like
US5475931A (en) * 1994-08-08 1995-12-19 Wei; Ching-Lin Multifunctional drawing implement box
US6782629B2 (en) 2001-05-10 2004-08-31 The Stanley Works Straight edge to facilitate holding and measuring and to provide protection when cutting

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