DE593728C - Circuit arrangement for telephone systems with dialer operation - Google Patents

Description

GERMAN EMPIRE

ISSUED ON MARCH 6, 1934

REICH PATENT OFFICE

PATENT LETTERING

CLASS 21a ³ GROUP 3120

■ S'iO22ioVIIIal2ia ⁸

Siemens & Halske Akt.-Ges. in Berlin-Siemensstadt *) Circuit arrangement for telephone systems with dialer operation

Addendum to Patent 558

Patented in the German Empire on September 15, 1929 The main patent started on March 14, 1929.

In the main patent an arrangement is placed under protection, with the voters with free Dialing to be switched to a free line for the purpose of preparatory setting, if connected lines are occupied in the contact field of the upstream voter in front of the line to a voter with free choice have been.

This is done for the purpose of being useless Running and avoiding unnecessary electricity consumption • by voters one after the other according to the increase in traffic, preparing for free Adjust lines.

The present invention is now a development of the main patent Protection of the idea by specifying here how that dealt with in the main patent Arrangement can also be used advantageously in systems in which the voters with free choice upstream Voters are grouped together and as a result of the application of the graduation A part of the voters with free choice are accessible to several or all groups of upstream voters is, while other voters with free choice only over individual groups upstream Voters can be reached.

With such a grouping of the upstream voters, this is achieved by that when taking place in a certain contact position of an upstream voter Allocation of a voter with free choice and the line provided by this by switching means only the preparatory setting of that voter with free choice is initiated, which over the next contact position to the group of the occupying upstream voter belonging voter is attainable.

An exemplary embodiment of the invention is shown in the drawing.

With I, II and III three groups of group voters are accepted; A group selector for each group is shown schematically. Only the details absolutely necessary for understanding the invention are shown, so that the ajb arms and the drive devices of the group selector could also be omitted.

As can be seen from the exemplary embodiment shown in the drawing, the intermediate selector ZJ ^ ₄ , for example, is accessible to the selectors of all groups, for example the selectors of groups I, II and III via their fourth contact position.

*) The patent seeker stated as the inventor:

Hans Dreyer in Berlin-Charlottenburg.

The intermediate selector ZJF ₃ is only accessible to the voters of several groups, for example to the voters of groups I and II, specifically via the third contact position of the voters of these groups. The intermediate selectors ZJV ₁ I and ZW ₁₂ are, for example, only accessible via one group, namely group II. Assuming that the intermediate selector ZW _{11 has} been occupied by the group selector GW ₁₁ via contact position ι, the relay P _{11 has been} energized. The contact 7 ^ ₁₁ has been closed, so that the following circuit for the rotary magnet D _{12 of} the intermediate selector ZPF _{12 has} come about: earth, contact 7 p _u , d arm. of the group. Selector GW ₁₁ , line Lc ₁₂ , contact 8 i ₁₂ ". Rotary magnet Z) ₁₂ , battery, earth. The rotary magnet has responded and the switching arms of the selector ZW ₁₂ have been switched one step further. When the rotary magnet D _{12 is} excited, contact 9 d _{n is} closed and the relay T _{12 is} energized via the winding III. This _{opens the contact 8 i 12} , de-energizes the rotary magnet D ₁₂ and, if the test switch arm of the selector ZiF _{12 has run} into a free line, it is brought to a standstill Circuit is established: Battery, winding II of relay C ₁₂ , contact 10 c ₁₂ , switching arm of intermediate selector ZW ₁₂ , winding II and winding I of relay T ₁₂ , line Lc ₁₂ , contact 1 in the contact bank of the if arm of group selector GW _U , contact 7 p _n , earth. The relay T ₁₂ remains energized in this circuit, and the relay C ₁₂ responds, causing the contact 10 C _{12 to} flip over so that the line appears blocked n D ₁₂ the contact 9 d _{12 is} opened. Now runs another group selector of the Group II to the contact 2 of its contact, bank, so it occupies the provided over the intermediate selector ₁₂ ZFF line Lc _12th At the same time, when the test relay of this group selector responds, a contact corresponding to the contact 7 p _n is closed, through which a circuit is established via the line Lc ₃ via the d-Ατηι of this selector via the line Lc 3, which runs as follows: Earth, not shown / »- Contact of the occupying group selector, rf arm of this group selector, contact 2 in the contact bank of the d arm, line Lc ₃ , contact 11 1 ₃ , rotary magnet D _{3 of} the intermediate selector ZW ₃ , battery, earth. The rotary magnet D ₃ is excited and actuates its contact 12 d ₃ , through which the winding III of the relay T _{3 is} switched on. The relay T ₃ responds and opens its contact-Ii i ₃ . As a result, the rotary magnet D ₃ . de-energized and, if the line to which the selector ZW _{3 is} now set is free, no longer responds, since the relay T ₃ then remains addressed in the test circuit that has been established. Assuming that the occupied line is line Lc ₃ , the following circuit is established: Earth, battery, winding II of relay C ₃ , contact 13 C ₃ , line Lc ₃ , test arm of intermediate selector ZW ₃ , winding II and I of the relay T ₃ , line Lc ₃ , contact 2 in the contact bank of the d arm of the occupying group voter of group II, ^ contact of this voter, earth. So it was only initiated the preparatory setting of that voter with free choice who can be reached via the next contact position of the voters belonging to the group of the occupying upstream voter.

Claims (1)

Claim: Circuit arrangement for telephone systems with voter operation, in which _: voters with free choice prepare to prepare for free outgoing lines, according to patent 558298, characterized in that when a voter with free choice and the one provided by this takes place in a certain contact position of an upstream voter, a voter is assigned Management only initiates the preparatory setting of that voter with free choice who can be reached via the next contact position of the voter belonging to the group of the occupying upstream voter. 1 sheet of drawings