DE185984C - - Google Patents

Description

IMPERIAL

PATENT OFFICE.

PATENT LETTERING

CLASS 83 b. GROUP

Patented in the German Empire on May 18, 1906.

Resistors are used to suppress the sparks at the contacts of electrical clocks used either parallel to the electromagnet windings or parallel to the Interrupter are held.

In both cases there is a loss of electrical energy.

According to the invention, these shortcomings are eliminated by adding two contact points for the

ίο Electromagnet and the resistor are provided, of which the one belonging to the battery circuit is opened first and is closed last when the current is closed, so that the resistor is short-circuited during the excitation of the electromagnet and does not consume any current. In the drawing, the device is shown in Fig. Ι and 2 in two positions. The bearing pin o attached to the armature α , to which the lever s is screwed, passes through the cutout D of the board ρ. On the board ρ the shift lever t is also mounted so that it can rotate about h , the movements of which are limited by the stops i ² , i ³ ; the roller ν is rotatably mounted on one end of the lever and the pawl u on the other, which is loaded by the spring y attached to the lever t. The lever ί also carries an arm ί ¹ and is held in one position or the other by the spring w (Kippspannwerk).

In this board ρ the contact pin χ is also inserted by means of the insulating sleeve x ^1. Furthermore, the auxiliary contact 40 is on the circuit board

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feder \ attached by means of the insulating ^{piece ^ 1.} The spring ^ and the contact pin χ are in constant contact with the resistor A.

The board ρ is finally connected to one pole of the battery r by means of the screw B , while the other pole is conductively connected to the electromagnets b and c and the contact pin χ by means of the line q ^2.

The process is as follows:

The winding mechanism moving with the clockwork / has rotated the armature α out of the field of the magnet b, c , and the shoe s attached to the armature α pressed the contact pawl u together with the lever t down until its role ν over the dead Point of the spring w slipped and as a result the lever t has snapped to the stop Z ² (see Fig. 2).

At this moment, the lever u lies against the contact pin χ under the action of the spring y on the pin u ^1.

However, before the pawl u touches the contact pin χ , the lever t comes into contact with the spring \ , so that when contact occurs between u and χ, the resistor A is switched on, for the purpose of reducing the occurrence of the switch-on spark.

The armature α is now attracted by the electromagnet b, c , the pin ο grasping the arm ί ¹ and sliding it along with it. This will make the shift lever ί

printed on the stop t ^s and the pawl u also lifted slidingly from the contact pin χ.

If you turn if further, the resistor A is completely switched off by releasing the contact between the lever t and the spring \.

A spark at the main contact between u and χ is almost entirely impossible, ίο which is why a hitherto unachievable delicate setting of the contact points is permissible.

Claims (1)

Patent claim: Circuit-breaker with a contact lever rotatably mounted on the lever of a tilting clamping mechanism, characterized in that a resistor (A) is switched parallel to the interruption point (u, x) by a spring (■ {) coming into contact with the contact lever (t) such that when the current is closed, the switching on of the resistor (A) rather than the closing of the main contact (x, u) is effected, that when the latter is closed, the resistor (A) is short-circuited, and that when the current is opened, the The resistor (A) is switched off later than the opening of the main contact, for the purpose of avoiding spark formation at the contacts and saving electrical energy. 1 sheet of drawings.