Patent GB-448734-A (GB)
Title: Improvements in or relating to point operating systems, more particularly but not essentially for railway sidings
IPC: B61L17/00
Filed: 1935-04-18
Abstract: 448,734. Operating points of railway sidings &c. VEREINIGTE EISENBAHNSIGNALWERKE GES., Blockwerk, Siemensstadt, Berlin. April 18, 1935, No. 12084. Convention date, April 27, 1934. [Class 104 (i)] In a system for operating the points of railway sidings &c. a local rotary selector is allocated to each point W1, W2, &c. and a control selector is connected in series with the local selectors. The lines of the control selector A are connected in series with the contacts of local rotary selectors B, C, D as shown in Fig. 2, the local selectors having the same number of contacts 1 ... 50 as the control selector has allocating positions. Each local selector B, C, D comprises as many rows of contacts as there are tracks to be controlled, e.g. four tracks Gl1 .. Gl4. A setting magnet for the change over of a point, or a magnet of the corresponding local selector, is connected to the rows of contacts of the local selectors corresponding to the tracks Gl1 to Gl4 ; e.g. two setting magnets W1 + and W1 - are connected to four rows of contacts sch11 to sch14 of the local selector of the first point Wl. With movements of wagons which do not affect the operation of the point W2, the arm of the local selector C of the point W2 is merely moved forward one step. The local selector magnet Sch2 attracts its armature and reverses its contacts sch19 and sch20, energizing the relay H2, which is locked through the contact u20 of relay U2 and the self-closing contact h20. A contact h21 opens the circuit of Sch2, the armature of which drops and moves forward the contact arms sch21 to sch24 by one step. The relay U2 is now energized through sch20 and h20 and opens u20 to de-energize H2. The circuit of U2 is broken at h20. In the circuit of each rotary selector magnet there is a contact of the magnet of the corresponding insulated rail, e.g. in the circuit of Sch1 there is a contact s10 of the magnet S1 of the insulated rail i1. If the first four wagons are allocated respectively to tracks Gl3, Gl4, Gl1, Gl4, the operator closes the contact for the first wagon in the first position Kl in the third row of the control selector A, then a contact for the second wagon in the second position in the fourth row, then a contact for the third wagon in the third position of the first row, and finally a contact for the fourth wagon in the fourth position in the fourth row. If current is now supplied, the setting magnet W1 - is energized through K1 and sch13 and sets the point W1 to the minus position. Through contacts h21 and sch23 the rotary selector magnet Sch2 is energized, whereby H2 is energized. This breaks contact h21 and thus de-energizes Sch2, so that contact arms sch21 to sch24 are moved forward one step. Since the track Gl4 is pre-set in the second position in the control selector, Sch2 operates through sch24 and completes a further step. Track Gl1 being pre-set in the third position, the magnet W2+ is energized through sch21 and sets the point W2 in the plus position. The magnet W3 - attracts its armature through sch33 and K1 and, when necessary, moves point W3 to minus position. When the first wagon moves on to rail i1 of point W1, magnet S1 is energized and closes s10, energizing magnet Sch1. As soon as the wagon leaves i1, S1 and Sch1 are de-energized, and contact arms sch11 to sch14 are moved forward one step. The magnet W1 - is energized through the second contact of the fourth row of the control selector and contact sch14. When the wagon moves on to rail i3 of point W3, Sch2 is energized through s30, and when the wagon leaves i3, the magnet Sch3 moves its arms sch31 to sch34 one step forward. The setting magnet W3 + is thereby energized through sch34. In a modification, each local selector has only one row of contacts, and the several contact rows of the control selector are combined in a single bank, so that a single plug &c. may simultaneously establish a corresponding number of connections.