AT58338B - Arithmetic teaching aids with rotatable counters. - Google Patents
Arithmetic teaching aids with rotatable counters.Info
- Publication number
- AT58338B AT58338B AT58338DA AT58338B AT 58338 B AT58338 B AT 58338B AT 58338D A AT58338D A AT 58338DA AT 58338 B AT58338 B AT 58338B
- Authority
- AT
- Austria
- Prior art keywords
- arithmetic teaching
- rotatable
- means according
- counters
- teaching means
- Prior art date
Links
Landscapes
- Manipulator (AREA)
Description
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Einer, nach Art aufgezählten Geldes sich teilweise deckend, aufgemalt tragen, während sie im Innern noch neun Papierstreifen mit gleicher Zeichnung aufnehmen, so dass in ihnen je 100 Einer übersichtlich vorhanden sind.
Als Bruchrechenmaschine gebraucht, unterscheidet sich die Maschine von der vorher beschriebenen, abgesehen vom Fehlen der Hunderterprismen, nur dadurch, dass jede Prismenreihe aus einer anderen Zahl von Prismen entsprechend veränderter Länge besteht, und dass die gesamte Vorderfläche der Körper gleichmässig gefärbt ist (statt einzelner Farbzeichen).
Infolgedessen ist auch der Rahmen ringsherum gleich breit.
PATENT ANSPRÜCHE :
1. Rechenlehrmittel mit um eine Welle drehbaren Zahlenkörpern, bei der durch Achsialverschiebung eine Kupplung mehrerer Körper mit der Welle vorgenommen werden kann, dadurch gekennzeichnet, dass die Körper eine Einstellvorrichtung enthalten, durch welche durch die achsiale Bewegung einer Stange eine Drelibewegung der Körper erzielt werden kann.
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Carrying one, according to the type of enumerated money, partially covered, painted on, while inside they hold nine paper strips with the same drawing, so that in each of them 100 ones are clearly available.
Used as a fractional calculator, the machine differs from the one previously described, apart from the absence of the hundred prisms, only in that each row of prisms consists of a different number of prisms of correspondingly changed length, and that the entire front surface of the body is evenly colored (instead of individual color symbols ).
As a result, the frame is equally wide all around.
PATENT CLAIMS:
1. Arithmetic teaching means with number bodies rotatable about a shaft, in which a coupling of several bodies with the shaft can be made by axial displacement, characterized in that the bodies contain an adjusting device through which a drifting movement of the body can be achieved by the axial movement of a rod .
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Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE58338X | 1911-02-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
AT58338B true AT58338B (en) | 1913-03-26 |
Family
ID=5629532
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT58338D AT58338B (en) | 1911-02-02 | 1912-01-29 | Arithmetic teaching aids with rotatable counters. |
Country Status (1)
Country | Link |
---|---|
AT (1) | AT58338B (en) |
-
1912
- 1912-01-29 AT AT58338D patent/AT58338B/en active
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