CH176245A - Holder for lead and colored leads. - Google Patents
Holder for lead and colored leads.Info
- Publication number
- CH176245A CH176245A CH176245DA CH176245A CH 176245 A CH176245 A CH 176245A CH 176245D A CH176245D A CH 176245DA CH 176245 A CH176245 A CH 176245A
- Authority
- CH
- Switzerland
- Prior art keywords
- holder
- clamping piece
- lead
- mine
- bore
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43K—IMPLEMENTS FOR WRITING OR DRAWING
- B43K21/00—Propelling pencils
- B43K21/02—Writing-core feeding mechanisms
- B43K21/22—Writing-cores gripping means, e.g. chucks
Description
Halter für Blei- und Farbminen. Vorliegende Erfindung betrifft eine weitere Ausbildung des Halters für Blei- und Farb minen gemäss dem Patentanspruch des Haupt patentes.
Die Zeichnung stellt ein Ausführungs beispiel des Erfindungsgegenstandes dar. Die Fig. <B>1</B> zeigt einen Längsschnitt durch den Halter; Die Fig. 2 und<B>3</B> zeigen einen Querschnitt und eine Draufsicht des Klemmstückes des Halters.
Die Mine a wird durch das Klemmstück c vermittelst des mittleren, gerauhten Teils bi der Klemmstückbohrung gegen das Zurück stossen gehalten und am Austritt des Klemm stückes durch den vordersten, glatten Teil<B>b</B> der Klemmstückbohrung geführt.
Das Klemm stück c ist in der zugehörigen Kegelfläche<B>f</B> des Halterstückes h derart gelagert, dass der Pressdruck auf die Mine vom Klemmsitz ans ein annähernd gleichmässig verteilter ist, um ein Brechen der Mine durch Biegungsbean- spruchung oder Kerbwirkung zu vermeiden.
Der Winkel der Erzeugenden der Kegel sitzfläche<B>g</B> des Klemmstückes c mit der Halter- axe ist grösser oder gleich wie der Winkel, den die Erzeugende der Fläche<B>f</B> des Halter- stflIckes h mit der Halteraxe bildet.
Der Durchmesser der Bohrung des Klemm stückes ist gleich oder kleiner als der Durch messer der Mine, um ein Drehen der Mine zu verhüten.
Das geschlitzte Klemmstück<B>c</B> umschliesst den Umfang der Mine in dem Teil<B>b</B> der Klemmstückbohrung mehr als in dem Teil<B>bi</B> dieser Bohrung, um eine gute Führung der Mine zu erhalten.
Holder for lead and colored leads. The present invention relates to a further embodiment of the holder for lead and color mines according to the claim of the main patent.
The drawing shows an exemplary embodiment of the subject matter of the invention. FIG. 1 shows a longitudinal section through the holder; FIGS. 2 and 3 show a cross section and a plan view of the clamping piece of the holder.
The mine a is held by the clamping piece c by means of the middle, roughened part bi of the clamping piece bore against the push back and is guided at the exit of the clamping piece through the foremost, smooth part <B> b </B> of the clamping piece bore.
The clamping piece c is mounted in the associated conical surface <B> f </B> of the holder piece h in such a way that the pressure on the lead from the press fit is almost evenly distributed in order to prevent the lead from breaking due to bending stress or notch effects avoid.
The angle of the generatrix of the conical seat surface <B> g </B> of the clamping piece c with the holder ax is greater than or equal to the angle that the generatrix of the surface <B> f </B> of the holder piece h with the holding axle forms.
The diameter of the bore of the clamping piece is equal to or smaller than the diameter of the mine in order to prevent the mine from turning.
The slotted clamping piece <B> c </B> encloses the circumference of the mine in the part <B> b </B> of the clamping piece bore more than in the part <B> bi </B> of this bore in order to ensure good guidance of the Get mine.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH176245T | 1934-03-26 | ||
CH138622T | 1939-04-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH176245A true CH176245A (en) | 1935-03-31 |
Family
ID=25713227
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH176245D CH176245A (en) | 1934-03-26 | 1934-03-26 | Holder for lead and colored leads. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH176245A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1007666B (en) * | 1953-04-04 | 1957-05-02 | Rodi & Wienerberger Ag | Pressure screw pin with feed screw |
US3001510A (en) * | 1957-04-12 | 1961-09-26 | Chelazzi Casimiro | Improvements in lead dropping pencils |
EP0383412A2 (en) * | 1986-10-30 | 1990-08-22 | KOTOBUKI & CO., LTD. | Lead chuck of mechanical pencil |
-
1934
- 1934-03-26 CH CH176245D patent/CH176245A/en unknown
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1007666B (en) * | 1953-04-04 | 1957-05-02 | Rodi & Wienerberger Ag | Pressure screw pin with feed screw |
US3001510A (en) * | 1957-04-12 | 1961-09-26 | Chelazzi Casimiro | Improvements in lead dropping pencils |
EP0383412A2 (en) * | 1986-10-30 | 1990-08-22 | KOTOBUKI & CO., LTD. | Lead chuck of mechanical pencil |
EP0383412A3 (en) * | 1986-10-30 | 1991-04-24 | KOTOBUKI & CO., LTD. | Lead chuck of mechanical pencil |
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