DE280529C - - Google Patents
Info
- Publication number
- DE280529C DE280529C DENDAT280529D DE280529DA DE280529C DE 280529 C DE280529 C DE 280529C DE NDAT280529 D DENDAT280529 D DE NDAT280529D DE 280529D A DE280529D A DE 280529DA DE 280529 C DE280529 C DE 280529C
- Authority
- DE
- Germany
- Prior art keywords
- cover plate
- cutout
- colored
- slides
- handles
- 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
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B19/00—Teaching not covered by other main groups of this subclass
- G09B19/02—Counting; Calculating
Landscapes
- Business, Economics & Management (AREA)
- Engineering & Computer Science (AREA)
- Entrepreneurship & Innovation (AREA)
- Physics & Mathematics (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Toys (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
Es sind bereits Rechentafeln bekannt, in deren mit Nuten ausgestatteten Grundplatte mit Griffen ausgestattete farbige Schieber verschiebbar gelagert sind, die von einer mit Ausschnitten ausgestatteten rahmenartigen Decke so bedeckt werden, daß durch seitliches Verschieben der Schieber die Ausschnitte als farbige Flächen auf der Tafel erscheinen. Bei dieser Einrichtung ist aber für jeden Ausschnitt eine besondere Farbe erforderlich, und da die Rechentafel für verschiedene Rechenarten verwendet werden soll, so muß dieselbe auch eine größere Anzahl Felder besitzen. Die Rechentafel ist dann aber nicht mehr handlieh und das Hervorrufen der Bilder für die Kinder auch ziemlich anstrengend, umständlich und schwer übersichtlich.There are already computer tables known in their grooved base plate equipped with handles colored slider are slidably mounted by a with Cutouts equipped frame-like ceiling are covered so that by side If you move the slider, the sections appear as colored areas on the board. at however, this facility requires a special color for each section, and Since the calculation table is to be used for different types of calculations, it must be the same also have a larger number of fields. The calculation table is then no longer hand-borrowed and the creation of the images for the children is also quite exhausting, cumbersome and difficult to understand.
Von dieser bekannten Einrichtung unterscheidet sich nun der Erfindungsgegenstand dadurch, daß in den Nuten der Grundplatte der Rechentafel, und zwar unter jedem Ausschnitt der Deckplatte, je ein Paar gegeneinander anliegende, in der Mitte des Ausschnittes der Deckplatte sich berührende, mit Griffen ausgestattete Schieber so gelagert sind, daß man durch gleichzeitiges Verschieben beider Schieber nach rechts oder links in demselben Ausschnitt der Deckplatte zwei verschiedenfarbige Bilder erscheinen lassen kann. Dies ist auch ohne weiteres möglich, da die beiden Griffe der Schieber in der Mitte des Deckplattenausschnitts aneinanderliegeri.The subject of the invention now differs from this known device in that in the grooves of the base plate of the calculator, under each cutout of the cover plate, one pair each lying against one another, in the middle of the cutout the cover plate touching, equipped with handles slides are mounted so that by moving both sliders to the right or left in the same at the same time Cutout of the cover plate can make two different colored images appear. this is also easily possible because the two handles of the slider are in the middle of the cover plate cutout contiguous
In der beiliegenden Zeichnung zeigt:The attached drawing shows:
Fig. ι eine Draufsicht, teilweise ausgebrochen, Fig. Ι a plan view, partially broken away,
Fig. 2 eine Stirnansicht, teilweise ausgeschnitten. Fig. 2 is an end view, partially cut out.
Die Rechentafel besteht aus einer Grundplatte a, die mit einer Anzahl Führungsnuten b ausgestattet ist. In diesen Nuten sind die zur Bildung der Farbenbilder dienenden, verschiedenfarbigen, zwangläufig geführten Schieber c angeordnet. Sie sind mit Griffen d ausgestattet und in bekannter Weise von einer rahmenartig ausgebildeten, mit Ausschnitten e versehenen Deckplatte g überdeckt.The calculation board consists of a base plate a, which is equipped with a number of guide grooves b . In these grooves the different colored, positively guided slides c which are used to form the color images are arranged. They are equipped with handles d and covered in a known manner by a frame-like cover plate g provided with cutouts e.
Claims (1)
Publications (1)
Publication Number | Publication Date |
---|---|
DE280529C true DE280529C (en) |
Family
ID=536357
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT280529D Active DE280529C (en) |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE280529C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5488132A (en) * | 1992-06-15 | 1996-01-30 | Monsanto Company | Process for making optically active alpha-amino ketones and selected novel optically active alpha-amino ketones |
-
0
- DE DENDAT280529D patent/DE280529C/de active Active
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5488132A (en) * | 1992-06-15 | 1996-01-30 | Monsanto Company | Process for making optically active alpha-amino ketones and selected novel optically active alpha-amino ketones |
US6107512A (en) * | 1992-06-15 | 2000-08-22 | Monsanto Company | Process for making optically active α-amino ketones and selected novel optically active α-amino ketones |
US6316656B1 (en) | 1992-06-15 | 2001-11-13 | Monsanto Company | Process for making optically active alpha-amino ketones and selected novel optically active alpha-amino ketones |
US6541654B2 (en) | 1992-06-15 | 2003-04-01 | Monsanto Company | Process for making optically active α-amino ketones and selected novel optically active α-amino ketones |
US6849756B2 (en) | 1992-06-15 | 2005-02-01 | Monsanto Company | Process for making optically active α-amino ketones and selected novel optically active α-amino ketones |
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