DE903789C - Device for measuring speeds with pneumatic transmission - Google Patents

Device for measuring speeds with pneumatic transmission

Info

Publication number
DE903789C
DE903789C DEL10808A DEL0010808A DE903789C DE 903789 C DE903789 C DE 903789C DE L10808 A DEL10808 A DE L10808A DE L0010808 A DEL0010808 A DE L0010808A DE 903789 C DE903789 C DE 903789C
Authority
DE
Germany
Prior art keywords
expansion body
pneumatic transmission
measuring speeds
nozzle
air
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
Application number
DEL10808A
Other languages
German (de)
Inventor
Heinrich Lehmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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
Priority claimed from DEL8989A external-priority patent/DE886574C/en
Application filed by Individual filed Critical Individual
Priority to DEL10808A priority Critical patent/DE903789C/en
Application granted granted Critical
Publication of DE903789C publication Critical patent/DE903789C/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/26—Devices characterised by the use of fluids
    • G01P3/28—Devices characterised by the use of fluids by using pumps
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P1/00—Details of instruments
    • G01P1/07—Indicating devices, e.g. for remote indication
    • G01P1/08—Arrangements of scales, pointers, lamps or acoustic indicators, e.g. in automobile speedometers

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Fluid Pressure (AREA)
  • Measuring Arrangements Characterized By The Use Of Fluids (AREA)

Description

Durch das Patent 886 574 wird ein Drehzahlmesser mit pneumatischer Übertragung unter Schutz gestellt, bei nvelchem auf der zu überwachenden Welle eine Luftpumpe angebracht ist, welche eine zur Drehzahl proprtionale Luftmenge über eine flexible Rohrleitung zu einem mit einem Dehnungskörper ausgestatteten Anzeligegerät fördert und bei welchem die Steuerung des Druckausgleiches durch zwei Zylinder erfolgt, welche mit Schlitzen versehen sind. Zur Verminderung der Reibung und zur Vereinfachung der Fertigung wird ein weiteres Ausführungsgbeispiel gegeben und als zusätzliche Erfindung beansprucht. By the patent 886 574 a tachometer with pneumatic Transmission placed under protection, with nvelchem one on the wave to be monitored Air pump is attached, which an air volume proportional to the speed via a flexible pipeline to a display device equipped with an expansion body promotes and in which the pressure equalization is controlled by two cylinders, which are provided with slots. To reduce friction and to simplify The production is given a further exemplary embodiment and as an additional Invention claimed.

Druch die neue Ausführung wird die Reibung der Steuereinrichtung fast vollständig beseitigt. Eine Beeinflussung der Messung durch Reibung ist ausgeschlossen. Die Konstruktionsteile haben sich in ihrer Form vereinfacht und in ihrer Anzhl verringert. Gemäß der Erfindung erfolgt der Druckausgleich über eine Düse, deren Querschnitt bei der Auf- und Abwärtsbewegung des Dehnungskörpers durch eine konische Nadel gesteuert wird.With the new design, the friction of the control device is almost completely eliminated. The measurement cannot be influenced by friction. The structural parts have been simplified in shape and reduced in number. According to the invention, the pressure equalization takes place via a nozzle, the cross section of which controlled by a conical needle during the up and down movement of the expansion body will.

In der Abbildung wird die zusätzliche Erfindung dargestellt. Die von der Luftpumpe geförderte Luft fließt durch die flexible Rohrverbindung 9 nach dem Anzeigegerät und gelangt auf diese Weise in den Dehnungskörper 15. Der Dehnungskörper I5 ist oben, durch die Kappe 12 verschlossen. In der Kappe 12 befindet sich auf der oberen Fläche die Düse 13. In Düse I3 ragt die konische Nadel 14 hinein, welchemit dem Einlaßstutzen 11 fest verbunden ist. Bei einer Steigerung des Luft, druckes dehnt sich der Dehnungskörper 15 aus und vergrößert auf diese Weise den Querschnitt der Ausströmöffnung I3. Über das Gelenk I7 wird die Auf- und Abwärtsbewegung des Dehnungskörpers I5 durch das Zahnsegment I8 auf die Zeigerwelle 20 mit dem Zeiger 21 übertragen. Der Zeiger 21 spielt über der Skala 22. Die Arbeitsweise ist genau die gleiche wie bei der Ausführung nach dem Patent 886 574. The figure shows the additional invention. the Air conveyed by the air pump flows through the flexible pipe connection 9 the display device and in this way arrives at the expansion body 15. The expansion body I5 is closed at the top by the cap 12. In the cap 12 is located on the upper surface the nozzle 13. The conical needle 14 protrudes into nozzle I3, which with it the inlet port 11 is firmly connected. With an increase in air pressure the expansion body 15 expands and in this way increases the cross section of the outflow opening I3. The up and down movement of the Expansion body I5 through the toothed segment I8 on the pointer shaft 20 with the pointer 21 transferred. The pointer 21 plays over the scale 22. The mode of operation is precise the same as in the embodiment of the 886,574 patent.

Claims (1)

PATENTANSPRUCH : Einrichtung zur Messung von Drehzahlen mit pneumatischer Übertragung nach Patent 886 574, bei welchem auf der zu überwachenden Welle eine Luftpumpe angebracht ist, welche eine zur Drehzahl proportionale Luftmenge über eine flexible Rohrleitung zu einem mit einem Dehnungskörper ausgestatteten Anzeigegerät fördert, dadurch gekennzeichnet, daß der Druckausgleich über eine Düse stattfindet, deren Querschnitt bei der Auf-und Abwärtsbewegung des Dehnungskörpers durch eine konische Nadel gesteuert wird. PATENT CLAIM: Device for measuring speeds with pneumatic Transmission according to patent 886 574, in which a Air pump is attached, which is an amount of air proportional to the speed a flexible pipe to a display device equipped with an expansion body promotes, characterized in that the pressure equalization takes place via a nozzle, whose cross-section during the upward and downward movement of the expansion body through a conical needle is controlled.
DEL10808A 1951-05-12 1951-11-20 Device for measuring speeds with pneumatic transmission Expired DE903789C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEL10808A DE903789C (en) 1951-05-12 1951-11-20 Device for measuring speeds with pneumatic transmission

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEL8989A DE886574C (en) 1951-05-12 1951-05-12 Device for measuring speeds with pneumatic transmission
DEL10808A DE903789C (en) 1951-05-12 1951-11-20 Device for measuring speeds with pneumatic transmission

Publications (1)

Publication Number Publication Date
DE903789C true DE903789C (en) 1954-02-11

Family

ID=34888405

Family Applications (1)

Application Number Title Priority Date Filing Date
DEL10808A Expired DE903789C (en) 1951-05-12 1951-11-20 Device for measuring speeds with pneumatic transmission

Country Status (1)

Country Link
DE (1) DE903789C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE948122C (en) * 1953-06-16 1956-08-30 Emil Weber Driver seat arrangement

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE948122C (en) * 1953-06-16 1956-08-30 Emil Weber Driver seat arrangement

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