DE423119C - Process for the production of pencil leads - Google Patents

Process for the production of pencil leads

Info

Publication number
DE423119C
DE423119C DEM84608D DEM0084608D DE423119C DE 423119 C DE423119 C DE 423119C DE M84608 D DEM84608 D DE M84608D DE M0084608 D DEM0084608 D DE M0084608D DE 423119 C DE423119 C DE 423119C
Authority
DE
Germany
Prior art keywords
production
pencil leads
leads
paper
lead
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
DEM84608D
Other languages
German (de)
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.)
RAMON SELLES
Original Assignee
RAMON SELLES
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 RAMON SELLES filed Critical RAMON SELLES
Application granted granted Critical
Publication of DE423119C publication Critical patent/DE423119C/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B43WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43KIMPLEMENTS FOR WRITING OR DRAWING
    • B43K19/00Non-propelling pencils; Styles; Crayons; Chalks
    • B43K19/04Pencils with metallic writing-core

Landscapes

  • Inks, Pencil-Leads, Or Crayons (AREA)

Description

Verfahren zur Herstellung von Bleistiftminen. Die Erfindung betrifft die Herstellung von Bleistiftminen aus einer Metallegierung. In der Literatur ist bereits eine Metallegierung für Bleistifte bekannt, die aus Zinn, Blei, Wismut und Quecksilber besteht. Diese Minen haben sich jedoch in der Praxis nicht bewährt. Sie waren zu weich, also zu wenig widerstandsfähig, und mußten genau wie die Graphitminen der gewöhnlichen Bleistifte dauernd angespitzt werden. Das Wesen vorliegender Erfindung besteht nun darin, daß außer Zinn und Blei nicht Wismut und Quecksilber, sondern Platin und Kupfer verwendet wird. Je nach dein Prozentsatz der einzelnen Bestandteile wird das Fertigerzeugnis härter oder weicher. In jedem Falle jedoch ist das Material so beschaffen, daß ein Anspitzen selbst nach jahrelangem Gebrauch nicht erforderlich ist.Process for making pencil leads. The invention relates to the manufacture of pencil leads from a metal alloy. In the literature is already known a metal alloy for pencils made from tin, lead, and bismuth There is mercury. However, these mines have not proven themselves in practice. They were too soft, that is, not resistant enough, and just like the graphite leads, they had to be of ordinary pencils are constantly sharpened. The essence of the present invention consists in the fact that besides tin and lead, not bismuth and mercury, but Platinum and copper is used. Depending on your percentage of each ingredient the finished product becomes harder or softer. In any case, however, is the material designed so that sharpening is not necessary even after years of use is.

Aus diesem Grunde wird die Metalllegierung nicht zu langen durchgehenden Minen verarbeitet, sondern der Schreibstift bildet einen aus Holz, Hartgummi, Celluloid o. dgl. bestehenden Halter, an welchem eine kurze, kräftige Spitze aus dem nach vorliegendem Verfahren hergestellten Metall sitzt, welches so hart ist, daß es selbst beim stärksten Aufdrücken während des Schreibens nicht abbricht. Infolgedessen können viele Durchschläge mittels Kohlepapier hergestellt werden.For this reason, the metal alloy does not become continuous for a long time Refills are processed, but the pen is made of wood, hard rubber, celluloid o. The like. Existing holder, on which a short, powerful tip from the after The metal produced by the present process is so hard that it is itself does not break off when pressed hardest while writing. As a result, you can many copies can be made using carbon paper.

Die Legierung kann dur cii Änderung des Mischungsverhältnisses derart zusammengesetzt werden, daß sie nur auf bestimmten Papieren Spuren hinterläßt, also beispielsweise nur auf glattem, geleimtem Papier, während sie auf ungeleimtem Papier nicht schreibt. Sie kann andererseits aber auch so zusammengesetzt werden, daß sie auf jedem beliebigen Papier Spuren hinterläßt.The alloy can by changing the mixing ratio in such a way put together so that it only leaves traces on certain papers, that is for example only on smooth, sized paper, while on unsized paper does not write. On the other hand, it can also be put together in such a way that it leaves traces on any paper.

Als Beispiel der Zusammensetzung sei angeführt: As an example of the composition:

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung von Bleistiftminen, dadurch gekennzeichnet, daß Blei, Zinn, Kupfer unter Zusatz von Platin zusammengeschmolzen werden, wobei durch Veränderung des Mischungsverhältnisses der Metalle verschiedene Härtegrade erzielt werden können. PATENT CLAIM: Process for the production of pencil leads, characterized in that lead, tin, copper are melted together with the addition of platinum, whereby different degrees of hardness can be achieved by changing the mixing ratio of the metals.
DEM84608D 1923-04-20 1924-04-11 Process for the production of pencil leads Expired DE423119C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES423119X 1923-04-20

Publications (1)

Publication Number Publication Date
DE423119C true DE423119C (en) 1925-12-19

Family

ID=8245314

Family Applications (1)

Application Number Title Priority Date Filing Date
DEM84608D Expired DE423119C (en) 1923-04-20 1924-04-11 Process for the production of pencil leads

Country Status (1)

Country Link
DE (1) DE423119C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT412627B (en) * 2001-04-18 2005-05-25 Vladimir Kralj WRITING HELP

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT412627B (en) * 2001-04-18 2005-05-25 Vladimir Kralj WRITING HELP

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