DE228304C

DE228304C -

Info

Publication number: DE228304C
Application number: DENDAT228304D
Authority: DE

Description

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

PATENTSCHRIFTPATENT LETTERING

- JVl 228304 KLASSE 21 e. GRUPPE- JVl 228304 CLASS 21 e. GROUP

Elektrischer Maximumanzeiger. Patentiert im Deutschen Reiche vom 3. August 1909 ab. Electric maximum indicator. Patented in the German Empire on August 3, 1909.

.Vl.Vl

Für diese Anmeldung ist bei der Prüfung gemäß dem Unionsvertrage vomFor this registration, the examination according to the Union Treaty of

20. März 1883March 20, 1883

14. Dezember 1900 auf Grund der Anmeldung in Frankreich vom 3. August 1908 anerkannt.Recognized on December 14, 1900 on the basis of the registration in France on August 3, 1908.

,. .,. St — die PriolMjit,. .,. St - the PriolMjit

Die Erfindung betrifft einen elektrischen Maximumanzeiger, bei dem zur Verhinderung einer Beeinflussung durch nur augenblickliche große Belastungen die Geschwindigkeit der Bewegung eines die Fortschaltung des Zeigers bewirkenden, von der zu messenden Größe beeinflußten Mitnehmers von einem verzögernd wirkenden Gangwerk abhängig ist. Von den bisherigen Ausführungen solcher Maximumanzeiger unterscheidet sich die Erfindung dadurch, daß sie das Gangwerk nicht von einem besonderen Uhrwerk, sondern vom Laufwerk eines mit dem Maximumanzeiger vereinigten Motorzählers antreiben läßt.The invention relates to an electrical maximum indicator in which to prevent an influence on the speed of the movement by only momentary large loads one of the value to be measured which causes the pointer to advance influenced driver is dependent on a retarding movement. Of the previous versions of such maximum indicators, the invention differs in that that the movement is not from a special clockwork, but from the drive a motor counter combined with the maximum indicator can be driven.

In der Zeichnung ist die Erfindung in einem Ausführungsbeispiel dargestellt. Fig. 1 ist eine teilweise geschnittene Ansicht des aus dem Zähler und einem Amperemeter zusammengesetzten Apparates. Fig. 1 a zeigt eine Einzelheit. Fig. 2 ist eine Seitenansicht, und Fig. 3 zeigt schematisch eine Abänderung.In the drawing, the invention is shown in one embodiment. Fig. 1 is a partially sectioned view of the assembled from the meter and an ammeter Apparatus. Fig. 1 a shows a detail. FIG. 2 is a side view, and FIG. 3 shows schematically a modification.

A ist die Antriebsachse eines Motorzählers, A is the drive axis of a motor counter,

die mittels der Schnecke B und des Zwischen-which by means of the screw B and the intermediate

. getriebes C, D, E und F ein Schneckenrad G antreibt, auf dem ein Kurbelzapfen H sitzt. Dieser greift an die Kurbelstange I an, von der aus bei der Drehung des Räderwerkes ein auf der Verlängerung der Achse des Amperemeters drehbar angeordneter Zahnsektor 5 in Schwingungen versetzt wird. Dieser Zahn-' Sektor ist das Organ, welches die Ablenkungen des Meßapparates verlangsamt. Der vom beweglichen System des Amperemeters getragene Mitnehmer ist nämlich mit einer Sperrklinke K versehen, die in die Zähne des Sektors S eingreift und dadurch verhindert, daß der Mitnehmer sich gegen den Sektor S im Sinne wachsender Ablenkungen bewegen kann, während sie Bewegungen des Mitnehmers im entgegengesetzten Sinne zuläßt. Der Mitnehmer α kann nun, wenn er ausschwingt, einen mit Reibung aufgesetzten Zeiger b mitnehmen und entlang einer Skala L verschieben. Zurückgestellt kann der Zeiger b aber nur von Hand werden. Er zeigt die größten Ausschlage an, welche der Mitnehmer α erreicht hat. P und Q sind Gegengewichte. R ist ein Anschlag, der die Sperrklinke K aus den Zähnen des Sektors S aushebt, wenn dieser auf der Rückwärtsbewegung (auf der Zeichnung von links nach rechts) in der äußersten Stellung rechts anlangt.. gearbox C, D, E and F drives a worm wheel G on which a crank pin H sits. This engages the connecting rod I , from which a toothed sector 5, which is rotatably arranged on the extension of the axis of the ammeter, is caused to vibrate when the gear train rotates. This tooth sector is the organ that slows down the distractions of the measuring apparatus. The driver carried by the moving system of the ammeter is in fact provided with a pawl K which engages the teeth of the sector S and thereby prevents the driver from moving against the sector S in the sense of increasing deflections, while the driver moves in the opposite direction Senses. The driver α can now, when it swings out, take along a pointer b applied with friction and move it along a scale L. However, the pointer b can only be reset by hand. It shows the largest deflections that the driver α has reached. P and Q are counterweights. R is a stop that lifts the pawl K out of the teeth of the sector S when it arrives in the extreme right position on the backward movement (from left to right in the drawing).

Die Wirkungsweise, der Anordnung ist folgende : Es sei angenommen, daß der Zeiger b, der den Höchstverbrauch anzeigt, auf dem Teilstrich 6 der Skala L steht und der Sektor 5The mode of operation, the arrangement is as follows: It is assumed that the pointer b, which indicates the maximum consumption, is on the graduation 6 of the scale L and the sector 5

Claims

is in its extreme position as shown in the drawing. If a current passes through the line and through the ammeter, the moving part of the latter is under the influence of a couple of forces which, if free, should give it such a deflection that the driver α moves to that division of the scale L would set, which corresponds to the amperage of the current strength. However, since the pawl K is in engagement with the sector S, the moving part of the ammeter can only follow the impulse given by the aforementioned force couple to the extent that the counter or its engine moves the sector S forward. Let it be assumed that the current remains constant during an entire oscillation period of the sector S, a full back and forth oscillation: When the driver α of the ammeter arrives at that division of the scale L that the. Corresponds to the current strength flowing through the lines, it comes to a standstill there because it is in equilibrium. The sector S, meanwhile, continues its movement to the left, since the pawl a mutual movement of the sector and the driver α in this direction of movement of the. Sector. If the current was below 6 amperes, the driver α could not reach the pointer b. If the current strength was greater, then the driver α has taken the pointer b up to the scale division which corresponds to the highest amperage during the display period. The driver a then remains immobile, while the sector S continues its movement to the left. As soon as the direction of oscillation of S is reversed, however, ie the sector begins to oscillate to the right, it takes the driver a ■ with it and gradually brings it back to the zero position of the scale L. At this moment the stop R strikes against the pawl K and lifts it out, the pawl immediately falls under the action of the counterweight P into the next tooth and so on until the sector has reached its extreme right position and the pawl is back in the same The tooth gap in which it was located at the beginning of the oscillation period has collapsed. If the current, instead of remaining constant for an entire period of oscillation, had decreased in a moment at which the driver α had already exceeded the graduation of the scale corresponding to the new current intensity, the driver would immediately go back to this graduation since it can move to the right while sector 5 swings to the left. If the current strength had increased again before the sector had reached its extreme left position, the driver α would have resumed its leftward movement, always with the sector. The extreme position that he could then have reached would, however, have been shifted so much further to the right as corresponds to the number of teeth by which the pawl had previously moved to the right in the sector. Fig. 3 shows schematically a modification of the device, which is recommended for the case that the measuring apparatus is a wattmeter. The sector set in vibration by the counter is then only equipped with a single tooth. This is followed by a contact on the circumference of the sector, which is connected to that line line from which the current coil of the wattmeter is not branched. The driver is conductively connected to the voltage coil. Then the pawl K closes the circuit of the voltage coil of the wattmeter with the help of the contact on the sector, as long as the oscillation of the sector does not yet correspond to the deflection that the electrodynamic couple tries to give the driver. When the driver has reached its normal oscillation, the pawl leaves, if the sector continues its movement, the contact on the circumference, the current of the voltage coil is interrupted, and the driver returns to the zero position so as not to swing out again until the sector has returned to its initial position and the contact is closed again. Pa ϊεντ claims:

1. Electrical maximum indicator, used to prevent interference by only momentary great loads the speed of movement of a effecting the progression of the pointer, influenced by the variable to be measured Driver is dependent on a retarding movement, characterized in that that the retarding movement is driven by the drive of an ordinary motor counter.

2. Maximum indicator according to claim 1, characterized in that the drive of the counter (A) a toothed sector (S) is set in oscillating motion, with which a pawl (K) on the driver (a) comes into and out of engagement that the driver when increasing-

the rash couples with the sector, but disengages as the rash decreases.

3. Maximum indicator according to claim 1 and 2, characterized in that the pawl (K) is automatically disengaged as soon as the zero point of the scale is reached when the driver (a) inevitably in the sense of decreasing deflection moving backward oscillation of the sector (S).

4. Maximum indicator according to claim 1 to 3, wherein the driver is formed by the movable system of a working knife, characterized in that the sector (S) has only one tooth at one end and here with a contact. which comes into contact with a contact attached to the driver (a) , the circuit of the main current coil of the working knife being closed.

1 sheet of drawings,