DE529502C - School blackboard with calculator - Google Patents
School blackboard with calculatorInfo
- Publication number
- DE529502C DE529502C DEG78290D DEG0078290D DE529502C DE 529502 C DE529502 C DE 529502C DE G78290 D DEG78290 D DE G78290D DE G0078290 D DEG0078290 D DE G0078290D DE 529502 C DE529502 C DE 529502C
- Authority
- DE
- Germany
- Prior art keywords
- school
- bracket
- calculator
- blackboard
- bores
- 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.)
- Expired
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)
- Drawing Aids And Blackboards (AREA)
Description
Schultafel mit Rechenvorrichtung Die Erfindung betrifft eine Schultafel mit einer für den Unterricht im Rechnen dienenden Einrichtung.School blackboard with computing device The invention relates to a school blackboard with an institution serving for teaching arithmetic.
Es sind bereits Schreibtafeln bekannt, die mit einer Rechenvorrichtung `versehen sind, die aus abnehmbaren, verschiebbare Zählkörper tragenden Bügeln besteht.There are already known writing boards with a computing device `are provided, which consists of removable, displaceable counting body carrying brackets.
Gemäß der Erfindung sind im Rahmen der Tafel senkrecht zur Tafelebene verlaufende Bohrungen vorgesehen, in welche sich die Schenkel der Bügel einstecken lassen.According to the invention are in the frame of the board perpendicular to the plane of the board running bores are provided into which the legs of the bracket are inserted permit.
Um eine größere Haltbarkeit zu erzielen, sind in die Bohrungen Metallhülsen eingesetzt.In order to achieve greater durability, metal sleeves are in the holes used.
in der Zeichnung ist der Erfindungsgegenstand in einer Ausführungsart dargestellt. Es zeigt: Abb. i eine Schultafel mit Rechenbügeln in schaubildlicher Darstellung, Abb, z einen Querschnitt durch die Tafel an der Befestigungsstelle eines Bügels, Abb. g einen zweiteiligen Bügel in Einzeldarstellung.In the drawing, the subject of the invention is in one embodiment shown. It shows: Fig. I a school blackboard with arithmetic rulers in diagrammatic form Representation, Fig, z a cross-section through the panel at the attachment point a bracket, Fig. g a two-part bracket in an individual representation.
In dem Rahmen a einer Schultafel b sind an zwei gegenüberliegenden Seiten Bohrungen c zur Aufnahme von Bügeln d vorgesehen. Die Enden e der Bügel d sind rechtwinklig umgebogen und werden bei der Befestigung der Bügel d in die Bohrungen c eingesteckt. In die Bohrurigen c sind zur Verhütung starker Abnutzung Metallhülsen feingesetzt. Die umgebogenen Enden e der einzelnen Schienen d sind zweckmäßig verschieden lang, so daß die auf den Schienen d angebrachten Kugeln g bei Benutzung in verschiedener Höhenlage sind, wodurch Übersicht und Handhabung bedeutend erleichtert werden.In the frame a of a school blackboard b bores c are provided on two opposite sides for receiving brackets d. The ends e of the bracket d are bent at right angles and are inserted into the bores c when the bracket d is attached. Metal sleeves are finely set in the drill holes c to prevent excessive wear. The bent ends e of the individual rails d are expediently of different lengths, so that the balls g attached to the rails d are at different heights when in use, whereby overview and handling are significantly facilitated.
Um die Kugeln g. leicht auswechseln zu können, sind die Bügel d zweckmäßig zweiteilig ausgebildet, und zwar derart, daß der eine Teil mit einem auf . einen kleineren Durchmesser abgesetzten Ende h und der andere Teil mit einer zur Aufnahme des Zapfens h entsprechend ausgebildeten Bohrung, i versehen ist.To get the balls g. The brackets d are useful to be able to replace them easily formed in two parts, in such a way that one part with one on. a smaller diameter offset end h and the other part with one for receiving of the pin h correspondingly designed bore, i is provided.
Die Einrichtung läßt sich in einfacher Weise an jeder Kinderschultafel anbringen und wieder von ihr entfernen. Die Bügel d können in beliebiger Anzahl vorhanden sein.The facility can be easily attached to any children's school board attach and remove from it. The bracket d can be in any number to be available.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEG78290D DE529502C (en) | School blackboard with calculator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEG78290D DE529502C (en) | School blackboard with calculator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE529502C true DE529502C (en) | 1931-07-14 |
Family
ID=7136630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEG78290D Expired DE529502C (en) | School blackboard with calculator |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE529502C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE867458C (en) * | 1951-04-15 | 1953-02-16 | Waldemar Andreas Morenz | Traffic lights, in particular for traffic training purposes |
| DE890273C (en) * | 1951-03-14 | 1953-09-17 | Friedrich Schmitt | Writing and calculating device for children |
-
0
- DE DEG78290D patent/DE529502C/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE890273C (en) * | 1951-03-14 | 1953-09-17 | Friedrich Schmitt | Writing and calculating device for children |
| DE867458C (en) * | 1951-04-15 | 1953-02-16 | Waldemar Andreas Morenz | Traffic lights, in particular for traffic training purposes |
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