DE306111C - - Google Patents

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Publication number
DE306111C
DE306111C DENDAT306111D DE306111DA DE306111C DE 306111 C DE306111 C DE 306111C DE NDAT306111 D DENDAT306111 D DE NDAT306111D DE 306111D A DE306111D A DE 306111DA DE 306111 C DE306111 C DE 306111C
Authority
DE
Germany
Prior art keywords
pointer
crank
guide
rotatable
straight
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
Application number
DENDAT306111D
Other languages
German (de)
Publication of DE306111C publication Critical patent/DE306111C/de
Active legal-status Critical Current

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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R1/00Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
    • G01R1/02General constructional details
    • G01R1/08Pointers; Scales; Scale illumination
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01DMEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/02Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using mechanical means
    • G01D5/04Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using mechanical means using levers; using cams; using gearing
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R13/00Arrangements for displaying electric variables or waveforms

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)

Description

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

Die bis jetzt bekannt gewordenen Zeigergeradführungen für Meßinstrumente mit drehbarem System haben alle gewisse Nachteile. Bei der einen, die einen über Rollen straff gespannten Faden benutzt, beeinträchtigt die Fadenreibung sowie die Lagerreibung durch den straff gespannten Faden die empfindliche Einstellung. Bei den Lenkersystemen ist die Führungsrolle zwischen zwei Schienen geradegeführt und muß sich trotz sorgfältigster Ausführung mit bestem Material immer etwas ecken oder klemmen. Auch beschwert ihr Gewicht unnütz das Zeigersystem. Es ist ferner eine Geradführung bekannt, bei welcher eine von einer Kurbel bewegte Stange in einer um eine feste Achse drehbaren Hülse gleitet. Der freie Endpunkt beschreibt dabei bekanntlich eine Kreiskonchoide, deren einer Teil eine symmetrisch angenäherte gerade Linie darstellt. The so far known pointer straight guides for measuring instruments with rotatable System all have certain disadvantages. With the one who tightens you over roles used taut thread, the thread friction and bearing friction by impaired the taut thread the delicate setting. In the case of the handlebar systems, the Guide role between two rails straight and must be in spite of the most careful execution Always corner or clamp something with the best material. You also complain Weight useless the pointer system. It is also known a straight line in which a Rod moved by a crank slides in a sleeve rotatable about a fixed axis. Of the As is well known, free end point describes a circular conchoid, one part of which is a represents a symmetrically approximated straight line.

Diese Bauart läßt sich für Zeigergeradführungen von empfindlichen Instrumenten, z. B. Druck- und Geschwindigkeitsmessern, Volt-, Ampere- und Wattmetern, Vorrichtungen zum Einstellen von Gleitwiderständen verwenden, wenn es gelingt, die ziemlich erhebliche Reibung der in der Achse der Hülse geführten Stange zu beseitigen. Nach der Erfindung wird daher (vgl. die Zeichnung) die als Zeiger dienende Stange α zwischen zwei auf ortsfesten Zapfen drehbaren Rollen b, c geführt.. Das Gewicht des Zeigers kann bei dieser Bauart auf das denkbar geringste Maß beschränkt werden. Der Reibungskoeffizient kann noch weiter durch die Wahl geeigneten Stoffes an den Berührungsstellen herabgesetzt werden. Die Rollen können z. B. aus Halbedelsteinen und die Lauffläche am Zeiger aus Edelmetall bestehen oder mit einem Edelmetallüberzug versehen sein.This design can be used for pointer straight guides of sensitive instruments such. B. pressure and speed meters, volt, ampere and watt meters, devices for adjusting sliding resistance use if it is possible to eliminate the rather considerable friction of the rod guided in the axis of the sleeve. According to the invention, the rod α serving as a pointer is therefore guided between two rollers b, c rotatable on stationary pins. The coefficient of friction can be further reduced by choosing a suitable material at the contact points. The roles can e.g. B. consist of semi-precious stones and the tread on the pointer made of precious metal or be provided with a precious metal coating.

Claims (1)

Patent-An Spruch:Patent-An saying: Zeigergeradführung für Meßinstrumente mit drehbarem System, bestehend aus einem Kurbelgetriebe, dessen mit dem Kurbelzapfen verbundene Stange auf einem Teil ihrer Länge zwangläufig geführt wird und am freien Ende auf einem Teil des Kurbelweges eine symmetrisch angenäherte gerade Linie beschreibt/ dadurch gekennzeichnet, daß zur Führung der als Zeiger ausgebildeten Stange zwei auf ortsfesten Zapfen drehbare Rollen dienen, die aus Halbedelsteinen bestehen, während die Lauffläche des Zeigers aus Edelmetall besteht. Straight pointer guide for measuring instruments with a rotatable system, consisting of a Crank mechanism whose rod connected to the crank pin is positively guided over part of its length and at the free end on part of the crank path a symmetrically approximated straight line Line describes / characterized in that to guide the as a pointer trained rod serve two rollers rotatable on stationary pins, which consist of semi-precious stones, while the The running surface of the pointer is made of precious metal. Hierzu 1 Blatt Zeichnungen.-1 sheet of drawings.
DENDAT306111D Active DE306111C (en)

Publications (1)

Publication Number Publication Date
DE306111C true DE306111C (en)

Family

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Family Applications (1)

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Country Status (1)

Country Link
DE (1) DE306111C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE972574C (en) * 1949-06-24 1959-08-13 Simonsen Radio As Guide arrangement for the pen in recording devices

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE972574C (en) * 1949-06-24 1959-08-13 Simonsen Radio As Guide arrangement for the pen in recording devices

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