AT99121B - Slide rule. - Google Patents

Slide rule.

Info

Publication number
AT99121B
AT99121B AT99121DA AT99121B AT 99121 B AT99121 B AT 99121B AT 99121D A AT99121D A AT 99121DA AT 99121 B AT99121 B AT 99121B
Authority
AT
Austria
Prior art keywords
slide rule
scales
auxiliary
rapid
scale
Prior art date
Application number
Other languages
German (de)
Inventor
Wilhem Ing Czerney
Original Assignee
Wilhem Ing Czerney
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 Wilhem Ing Czerney filed Critical Wilhem Ing Czerney
Application granted granted Critical
Publication of AT99121B publication Critical patent/AT99121B/en

Links

Landscapes

  • Length-Measuring Instruments Using Mechanical Means (AREA)
  • Drawing Aids And Blackboards (AREA)

Description

  

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  Rechenschieber. 
 EMI1.1 
 



   Bei   scheibenförmigen   Schiebern ist noch eine dritte Anordnung von   Hilfsskalen   möglich, nämlich in der Nähe des Drehpunktes, wo die Bewegung wegen der geringen Entfernung vom Drehpunkt so gering ist, dass die Skalen auch während der Drehung leicht abgelesen werden können. Diese Art ist ebenfalls in den Fig. 1 und 2 dargestellt. Die Zungenscheibe 3a besitzt eine durchsichtige Rückwand   3b,   die zentrisch die Hilfsskala 10 trägt. Die   Sehieberscheibe   la besitzt eine   Rückwand lb,   welche in dem durch den durchsichtigen   Teil3b sichtbaren   Ringstreifen die   Hilfsskala   9 besitzt.

   Die   Hilfsskalen   9 und 10 leisten den gleichen Dienst beim Rechnen wie die graphischen Hilfsskalen. 

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   Bei Rechenschiebern, bei welchen nur eine Skala bewegt wird, ist die Hilfsskala in erster Linie auf der bewegten Zunge von Bedeutung und kann auf der festen Schieberskala auch wegbleiben. Bei Rechenschiebern mit fester Marke hat die Hilfsskala der Zunge infolge viel öfterer Einstellung letzterer ebenfalls erhöhte Bedeutung und in erster Linie für diese nötig.



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  Slide rule.
 EMI1.1
 



   In the case of disc-shaped slides, a third arrangement of auxiliary scales is also possible, namely in the vicinity of the pivot point, where the movement is so small due to the small distance from the pivot point that the scales can be easily read even during rotation. This type is also shown in FIGS. 1 and 2. The tongue disk 3a has a transparent rear wall 3b which carries the auxiliary scale 10 centrally. The sighting disc la has a rear wall lb which has the auxiliary scale 9 in the ring strip visible through the transparent part 3b.

   The auxiliary scales 9 and 10 perform the same calculation service as the graphic auxiliary scales.

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   In the case of slide rules, in which only one scale is moved, the auxiliary scale is primarily important on the moving tongue and can also be left out on the fixed slide scale. In the case of slide rules with a fixed mark, the auxiliary scale of the tongue is also of increased importance due to the much more frequent setting of the latter and is primarily necessary for this.

Claims (1)

PATENT-ANSPRUCH : Rechenschieber, dadurch gekennzeichnet, dass ausser den Hauptskalen graphische oder logarithmische Hilfsskalen oder beide so angeordnet sind, dass durch dieselben die Werte der Hauptskalen auch während deren rascher Bewegung abgeschätzt werden können, um das rasehe Einstellen von Zahlen und somit ein rasches Rechnen zu erleichtern. EMI2.1 PATENT CLAIM: Slide rule, characterized in that, in addition to the main scales, graphic or logarithmic auxiliary scales or both are arranged in such a way that the values of the main scales can also be estimated during their rapid movement in order to facilitate the rapid setting of numbers and thus rapid calculation. EMI2.1
AT99121D 1924-04-01 1924-04-01 Slide rule. AT99121B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT99121T 1924-04-01

Publications (1)

Publication Number Publication Date
AT99121B true AT99121B (en) 1925-01-26

Family

ID=3618401

Family Applications (1)

Application Number Title Priority Date Filing Date
AT99121D AT99121B (en) 1924-04-01 1924-04-01 Slide rule.

Country Status (1)

Country Link
AT (1) AT99121B (en)

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