DE560827C - Pointer for electrical deflection measuring devices - Google Patents

Pointer for electrical deflection measuring devices

Info

Publication number
DE560827C
DE560827C DEA59682D DEA0059682D DE560827C DE 560827 C DE560827 C DE 560827C DE A59682 D DEA59682 D DE A59682D DE A0059682 D DEA0059682 D DE A0059682D DE 560827 C DE560827 C DE 560827C
Authority
DE
Germany
Prior art keywords
pointer
measuring devices
deflection measuring
electrical deflection
pointers
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
DEA59682D
Other languages
German (de)
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.)
AEG AG
Original Assignee
AEG AG
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 AEG AG filed Critical AEG AG
Priority to DEA59682D priority Critical patent/DE560827C/en
Application granted granted Critical
Publication of DE560827C publication Critical patent/DE560827C/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G23/00—Auxiliary devices for weighing apparatus
    • G01G23/18—Indicating devices, e.g. for remote indication; Recording devices; Scales, e.g. graduated
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING 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
    • G01D13/00—Component parts of indicators for measuring arrangements not specially adapted for a specific variable
    • G01D13/22—Pointers, e.g. settable pointer
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
    • G01R1/02—General constructional details
    • G01R1/08—Pointers; Scales; Scale illumination

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)

Description

Zeiger für elektrische Ausschlag-Meßgeräte Die als sogenannte Lanzen- oder Messerzeiger auszubildenden Zeiger von elektrischen Ausschlag-Meßgeräten werden bisher durch Ausstanzen aus einem dünnen Messing- oder Aluminiumblech oder durch Flachpressen eines feinen Aluminiumrohres hergestellt. Derartige Zeiger werden für Meßgeräte, bei denen mit Rücksicht auf die zu erzielende Meßgenauigkeit das Drehmoment des Zeigers sehr klein gehalten werden muß; aus außerordentlich dünnem Blech, also sehr leicht hergestellt, und sie haben dann nicht unwesentliche Nachteile, weil sie stark empfindlich gegen Stoßüberlastung sind, relativ geringe Dämpfung haben und bei Wechselstrom-Meßgeräten leicht in Resonanz kommen und Schwingungen ausführen. Um diese übelstände zu beseitigen, werden gemäß der Erfindung für derartige Meßgeräte Zeiger verwendet, die aus Isolier-Preßmaterial von geringerem spezifischem Gewicht als Aluminium, z. B. Formaldehydkondensationsharzen mit oder ohne Faserstoff (Bakelit) oder einem gummiartigen Preßmaterial, hergestellt sind. Ein derartiger Zeiger ist von genügender Elastizität, um auch größere stoßartige Belastungen vertragen zu können, wenn er am Ende der Skala gegen einen Anschlag stößt, und er hat gegenüber Aluminiumzeigern den besonderen Vorteil, daß sich bei gleichgeringem Gewicht größere Abmessungen und infolgedessen eine bessere Dämpfung ergeben. Ferner sind diese Wi:rkstoffe in sich farbig; durch sie wird also die Ablesbarkeit des Geräts verbessert, ohne daß es, wie bei Verwendung von Metall, eines Anstriches o. dgl. des Zeigers bedarf.Pointers for electrical deflection measuring devices The so-called lance or knife pointers to be trained pointers of electrical deflection measuring devices previously by punching out of a thin sheet of brass or aluminum or through Flattening of a fine aluminum tube made. Such pointers are used for Measuring devices in which the torque is determined with regard to the measuring accuracy to be achieved the pointer must be kept very small; made of extremely thin sheet metal, that is very easily manufactured, and then they have not insignificant disadvantages because they are highly sensitive to shock overload, have relatively little damping and with alternating current measuring devices easily come into resonance and cause vibrations. In order to eliminate these inconveniences, according to the invention for such measuring devices Pointer used made of insulating molded material of lower specific weight than aluminum, e.g. B. formaldehyde condensation resins with or without fiber (bakelite) or a rubber-like molding material. One such pointer is of sufficient elasticity to withstand larger shock loads can if he hits a stop at the end of the scale and he has opposite Aluminum hands have the particular advantage that they are larger with the same low weight Dimensions and, as a result, give better damping. Furthermore, these are active ingredients colored in itself; it improves the readability of the device without that, as with the use of metal, the pointer needs to be painted or the like.

Schließlich sind auch Zeiger nach der Erfindung nicht selbst elektrisch leitend, so daß also im Falle eines Systemüberschlages an den Zeigern gefährliche Spannungen nicht auftreten können.Finally, pointers according to the invention are not themselves electrical conductive, so that in the event of a system flashover at the pointers dangerous Tensions cannot occur.

Die Zeiger bestehen im allgemeinen aus einem einzigen Stück. Nach der Erfindung ist es auch möglich, nur den Arm aus Isoliermaterial zu pressen, wobei insbesondere bei Messerzeigern das Messer in bekannter Weise aus ganz dünnem Aluminiumblech bestehen und beim Pressen des Armes oder nachträglich eingesetzt werden kann.The pointers generally consist of a single piece. To the invention it is also possible to only press the arm from insulating material, wherein especially with knife pointers the knife in a known way made of very thin aluminum sheet exist and can be used when pressing the arm or afterwards.

Claims (3)

PATENTANSPRÜCHE: i. Zeiger für elektrische Ausschlag-Meßgeräte, dadurch gekennzeichnet, daß er aus leichtem Isolierpreßmaterial hergestellt ist. PATENT CLAIMS: i. Pointer for electrical deflection measuring devices, characterized in that it is made from lightweight molded insulating material. 2. Zeiger nach Anspruch i, dadurch gekennzeichnet, daß er aus einem gummiartigen Preßmaterial hergestellt ist. 2. Pointer according to claim i, characterized in that it consists of a rubber-like Press material is made. 3. Zeiger nach Anspruch i oder 2, insbesondere Messerzeiger, dadurch gekennzeichnet, daß der Arm aus dem Preßmaterial hergestellt und das z. B. in an sich bekannter Weise aus Aluminium hergestellte Messer in den Arm mit eingepreßt ist.3. Pointer according to claim i or 2, in particular knife pointer, characterized in that the arm made of the molding material and the z. B. in a known manner made of aluminum knife pressed into the arm with is.
DEA59682D 1929-11-20 1929-11-20 Pointer for electrical deflection measuring devices Expired DE560827C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEA59682D DE560827C (en) 1929-11-20 1929-11-20 Pointer for electrical deflection measuring devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA59682D DE560827C (en) 1929-11-20 1929-11-20 Pointer for electrical deflection measuring devices

Publications (1)

Publication Number Publication Date
DE560827C true DE560827C (en) 1932-10-07

Family

ID=6942017

Family Applications (1)

Application Number Title Priority Date Filing Date
DEA59682D Expired DE560827C (en) 1929-11-20 1929-11-20 Pointer for electrical deflection measuring devices

Country Status (1)

Country Link
DE (1) DE560827C (en)

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