DE20796C - Lead and slate pencil sharpeners - Google Patents
Lead and slate pencil sharpenersInfo
- Publication number
- DE20796C DE20796C DENDAT20796D DE20796DA DE20796C DE 20796 C DE20796 C DE 20796C DE NDAT20796 D DENDAT20796 D DE NDAT20796D DE 20796D A DE20796D A DE 20796DA DE 20796 C DE20796 C DE 20796C
- Authority
- DE
- Germany
- Prior art keywords
- lead
- disk
- jaws
- pencil sharpeners
- slate pencil
- 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.)
- Active
Links
- 239000010454 slate Substances 0.000 title description 3
- 210000001847 Jaw Anatomy 0.000 claims description 7
- 230000001681 protective Effects 0.000 claims description 3
- 239000000428 dust Substances 0.000 description 1
- 230000036633 rest Effects 0.000 description 1
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
- B43L19/00—Erasers, rubbers, or erasing devices; Holders therefor
- B43L19/02—Erasing knives
Landscapes
- Control Of Cutting Processes (AREA)
- Drawing Aids And Blackboards (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
Die schneidende oder schärfende Kante ist bei dem vorliegenden Instrument die Peripherie einer Scheibe a, die in sehr geringem Mafse excentrisch zu dem Drehpunkt oder Stift b liegt. Der Stift b lagert in zwei Backen Pb1, die die Scheibe theilweise umfassen. Zwischen diesen beiden Backen und um c drehbar sitzt der aus zwei Platten d d1 gebildete Theil, der in der Ansicht, Fig. 1, von segmentförmiger Gestalt ist. Die Platten bilden an ihrer Peripherie einen Winkel, Fig. 2, in den die Peripherie der Scheibe α hineinragt; je nachdem eine lange oder kurze Spitze des Blei- oder Schieferstiftes erzeugt werden soll, stellt man die Scheibe mit dem längeren oder kürzeren Halbmesser in den Winkel ein.The cutting or sharpening edge in the present instrument is the periphery of a disk a, which lies to a very small extent eccentric to the fulcrum or pin b. The pin b rests in two jaws Pb 1 which partially enclose the disk. Between these two jaws and rotatable about c sits the part formed from two plates dd 1 , which in the view, FIG. 1, is of segment-shaped shape. The plates form an angle at their periphery, FIG. 2, into which the periphery of the disk α projects; depending on whether a long or short tip of the pencil or slate pen is to be produced, the disc with the longer or shorter radius is set at an angle.
Da die Differenzen in den Halbmessern der excentrischen Scheibe α bei der Kleinheit des Instrumentes sehr geringfügige sind, so ist die eine, und zwar die sichtbare Seite dieser Scheibe mit irgend einem Zeichen (Körnerpunkt etc.) versehen, welcher den längeren Halbmesser andeutet. Since the differences in the radii of the eccentric disk α are very slight with the small size of the instrument, one of the sides, namely the visible side of this disk, is provided with some kind of mark (center point, etc.) which indicates the longer radius.
Der drehbare Stift b ist an einer Seite mit einem Wirbel/ versehen, damit eine mit einem länglichen Mittelschlitz versehene Schutzscheibe e über den Wirbel eingesetzt und durch Drehen des Wirbels festgehalten werden kann. Die umgebogene Kante der Schutzscheibe bewahrt die Schneidkante "der Scheibe a vor Beschädigung und gestattet, dafs das Instrument trotz der Schneidkante in der Tasche getragen werden kann.The rotatable pin b is provided with a swivel / on one side so that a protective disk e provided with an elongated central slot can be inserted over the swivel and held in place by rotating the swivel. The bent edge of the protective disk protects the cutting edge ″ of the disk a from damage and allows the instrument to be carried in the pocket despite the cutting edge.
Die Backen b1 b1 sind an geeigneter Stelle so weit ausgebaucht, dafs der durch die beiden Platten d dl gebildete Winkel zwischen ihnen Aufnahme finden kann. Diese Ausbauchung der Backen hat die nämliche Segmentform des Winkels. Die Platten sind zusammen um den Punkt c drehbar und wird ihre Drehbarkeit durch kleine Vorsprünge ο ο begrenzt, die in kleine Einschnitte in eine der Backen b1 eintreten. The jaws b 1 b 1 are bulged so far at a suitable point that the angle formed by the two plates dd l can be accommodated between them. This bulging of the jaws has the same segment shape of the angle. The plates can be rotated together around point c and their rotatability is limited by small projections ο ο which enter into small incisions in one of the jaws b 1 .
Die Drehbarkeit der Platten um den Punkt c hat den Zweck, den Winkel von Blei- und Schieferstaub bequem reinigen zu können, der sich in seinem durch die Backen b1 b1 beim Spitzen verdeckten Theil in ihm ablagert. Es können ebenfalls die in den sogenannten Künstlerstiften verwendeten Bleistangen mittelst dieses Instrumentes angespitzt werden.The rotatability of the plates about point c has the purpose of being able to easily clean the corner of lead and slate dust, which is deposited in it in its part covered by the jaws b 1 b 1 when sharpening. The pencils used in the so-called artist's pencils can also be sharpened with this instrument.
Claims (1)
Publications (1)
Publication Number | Publication Date |
---|---|
DE20796C true DE20796C (en) |
Family
ID=297519
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT20796D Active DE20796C (en) | Lead and slate pencil sharpeners |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE20796C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2744952A1 (en) * | 1996-02-15 | 1997-08-22 | Huguenin Thierry | Scraper for removing opaque film e.g. layer of ink, from data |
-
0
- DE DENDAT20796D patent/DE20796C/en active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2744952A1 (en) * | 1996-02-15 | 1997-08-22 | Huguenin Thierry | Scraper for removing opaque film e.g. layer of ink, from data |
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