AT23059B - Device for height adjustment of blackboards. - Google Patents

Device for height adjustment of blackboards.

Info

Publication number
AT23059B
AT23059B AT23059DA AT23059B AT 23059 B AT23059 B AT 23059B AT 23059D A AT23059D A AT 23059DA AT 23059 B AT23059 B AT 23059B
Authority
AT
Austria
Prior art keywords
rollers
blackboards
height adjustment
rest
hand
Prior art date
Application number
Other languages
German (de)
Inventor
Wilhelm Neumann
Original Assignee
Wilhelm Neumann
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Wilhelm Neumann filed Critical Wilhelm Neumann
Application granted granted Critical
Publication of AT23059B publication Critical patent/AT23059B/en

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Description

  

   <Desc/Clms Page number 1> 
 



  Vorrichtung zur   Höheneinstellung   von Schultafeln. 



   Gegenstand der Erfindung ist eine Vorrichtung zur Höheneinstellung von Schultafeln mittels eines Handhebels. 



   In der Zeichnung zeigen die Fig. 1 und 3 die Schultafel in zwei Ansichten bei niedrigster Stellung, teilweise im Schnitte ; Fig. 2 stellt dieselbe in Vorderansicht bei höchsterStellungdar. 
 EMI1.1 
 befindet sich an dem oberen Ende einer im festen Punkte l angeordneten Nürnberger-   s (here A,   deren unteres Ende in o an dem kurzen Arme eines um die Achse l'drehbaren   Handhebels , welcher sich   an dem Stellbogen s mit der bekannten Federlinke t je nach Bedarf höher oder niedriger einstellen lässt, angreift. 



   Bei dieser Einrichtung entfallen alle auf Schnüren, Säulen oder Ketten hängenden, 
 EMI1.2 
   leicht, schnell und sicher zu handhaben. 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



   <Desc / Clms Page number 1>
 



  Device for height adjustment of blackboards.



   The invention relates to a device for adjusting the height of blackboards by means of a hand lever.



   In the drawing, FIGS. 1 and 3 show the school blackboard in two views in the lowest position, partly in section; Fig. 2 shows the same in front view at the highest position.
 EMI1.1
 is located at the upper end of a Nuremberg s (here A) arranged at the fixed point 1, its lower end in o on the short arm of a hand lever which can be rotated about the axis 1 and which is located on the arch s with the known spring link t depending on Needs to be adjusted higher or lower, attacks.



   This facility eliminates all hanging on strings, pillars or chains,
 EMI1.2
   easy, quick and safe to use.

** WARNING ** End of DESC field may overlap beginning of CLMS **.

Claims (1)

PATENT-ANSPRUCH : Vorrichtung zur Höheneinstellung von Schultafeln, dadurch gekennzeichnet, dass ihre vertikal verschiebbaren, unten mit Rollen versehenen Tragsäulen auf um ihre Enden dreh- baren Hebotstangen nnd diese auf den Rollen von hndoen, durch feste Rollen gestützten und darauf gleitenden llebelstangen ruhen, deren Enden im Scheitel einer vertikalen Nürnbergerschere, welche an ihrem unteren Ende dm'ch einen am Tafeln, gestelle gelagerten Handhebel vertikal verstellt werden kann, drehbar gelagert sind. **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: Device for adjusting the height of school boards, characterized in that its vertically displaceable support columns, provided with rollers at the bottom, rest on lifting rods rotatable about their ends and these rest on the rollers of hand-held rods, supported by fixed rollers and sliding on them, the ends of which are at the apex of one vertical Nuremberg scissors, which at their lower end can be adjusted vertically by a hand lever mounted on the table, are rotatably mounted. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT23059D 1905-01-22 1905-01-22 Device for height adjustment of blackboards. AT23059B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT23059T 1905-01-22

Publications (1)

Publication Number Publication Date
AT23059B true AT23059B (en) 1906-02-10

Family

ID=3531895

Family Applications (1)

Application Number Title Priority Date Filing Date
AT23059D AT23059B (en) 1905-01-22 1905-01-22 Device for height adjustment of blackboards.

Country Status (1)

Country Link
AT (1) AT23059B (en)

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