DE147289C - - Google Patents
Info
- Publication number
- DE147289C DE147289C DENDAT147289D DE147289DA DE147289C DE 147289 C DE147289 C DE 147289C DE NDAT147289 D DENDAT147289 D DE NDAT147289D DE 147289D A DE147289D A DE 147289DA DE 147289 C DE147289 C DE 147289C
- Authority
- DE
- Germany
- Prior art keywords
- lining
- phonograph
- hollow ribs
- corrugated cardboard
- cylinder
- 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
- 210000000614 Ribs Anatomy 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 2
- 239000004744 fabric Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B25/00—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus
- G11B25/02—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus using cylindrical record carriers
Landscapes
- Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
- Storage Of Web-Like Or Filamentary Materials (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
PATENTSCHRIFTPATENT LETTERING
M 147289 KLASSE 42g. M 147289 CLASS 42g.
CARL SCHROTZ in CÖLN-DEUTZ.CARL SCHROTZ in CÖLN-DEUTZ.
Phonographenwalze mit einem Futter aus elastischem Stoff.Phonograph cylinder with a lining made of elastic fabric.
Die bisherigen Phonographenwalzen leiden an dem Übelstande, daß sie beim Aufziehen auf den Zylinder leicht beschädigt werden und zerspringen, außerdem aber zuweilen verrutschen. Diese Übelstände zu beseitigen, ist der Zweck der Erfindung.The previous phonograph rollers suffer from the disadvantage that they are wound up on the cylinder are easily damaged and crack, but also sometimes slip. The aim of the invention is to remedy these shortcomings.
Die Walze wird in an sich bekannter Weise nicht vollständig aus Wachs hergestellt, sondern mit einem inneren Futter ausThe roller is not made entirely of wax in a manner known per se, but with an inner lining
ίο anderem Stoff versehen. Damit nun der Futterkörper möglichst federnd wirkt, ist derselbe an seiner Innenseite mit Hohlrippen ausgerüstet, wobei zweckmäßig Wellpappe zur Herstellung des Futterkörpers benutzt wird, da solche bei billigem Preise und hinreichender Elastizität die erforderlichen Hohlrippen ohne weiteres aufweist. Derartige Phonographenwalzen können beim Aufschieben nicht zerspringen, da die Hohlrippen alle Stöße federnd aufnehmen und derart abschwächen, daß eine Verletzung der empfindlichen Wachsschicht ausgeschlossen erscheint. ίο provided with other material. So that the chuck body is as resilient as possible the same equipped on its inside with hollow ribs, where appropriate corrugated cardboard for the production of the chuck body is used, since such at cheap prices and sufficient Elasticity has the required hollow ribs easily. Such phonograph rollers can when pushed do not shatter, as the hollow ribs absorb all impacts resiliently and weaken them in such a way that that damage to the sensitive wax layer appears to be impossible.
In der Zeichnung istIn the drawing is
Fig. ι ein Querschnitt und Fig. 2 ein Längsschnitt durch die Walze.Fig. Ι a cross section and Fig. 2 is a longitudinal section through the roller.
α ist die Wachsschicht und b das Futter aus Wellpappe. α is the wax layer and b the corrugated cardboard lining.
Claims (2)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE147289C true DE147289C (en) |
Family
ID=414482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT147289D Active DE147289C (en) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE147289C (en) |
-
0
- DE DENDAT147289D patent/DE147289C/de active Active
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