DE58725C - Electrical monitoring precautions for railway switches - Google Patents

Description

IMPERIAL

PATENT OFFICE

CLASS 20: Railway operations.

The present electrical monitoring device - should serve to avoid derailments to prevent railway vehicles in points. To this end, it will be close of the switchman concerned, a bell is attached, which sounds as soon as the switch is turned over. After turning the switch, the tongue rests firmly on the nut rail on, so the bell comes to rest. If, on the other hand, the tongue remains after being turned down the "switch off by 3 to 4 mm or even further from the rail, the bell rings continuously. For the switchman concerned, this is the sign that the tongue does not lie firmly on the nut rail, what a disadvantage it was to prevent a derailment to prevent railway vehicles; Immediately help.

In the accompanying drawing is:

Fig. Ι a top view respectively. a horizontal section,

Fig. 2 is a longitudinal section and

Fig. 3 is a cross section.

The base plate A is made of sheet iron and is attached to the threshold B by means of the two straps α and a ^1. On the base plate A and insulated from it, two electrical connection pieces b and b ^{2 are} screwed, which are conductively connected to one another by a copper wire g. Two slides D and D ^{1 are} screwed onto the two switch tongues C and C ¹ , which are in conductive connection with the same and which convey the earth line. Insulating surfaces cd are attached to slide D and cf are attached ^{to slide D 1.} Adjusting screws E and E ¹ with right and left-hand threads are used to precisely adjust the slides. Stromschlufsstück b is connected by a copper wire h to the galvanic battery G , the other pole is connected to 'earth. A bell is switched on in this circuit. The power supply devices are protected from damage and moisture by a strong protective box S.

The mode of operation is as follows: If the switch, as indicated in the accompanying drawing, is on "deviation" and the tongue C is firmly on the mother rail , the insulating part d of the slide D touches the electrical connection piece b and the insulating part f of the slide D ¹ the current circuit δ ² . As a result, line h is interrupted and the bell connected to this line does not sound. If, on the other hand, the tongue C does not lie firmly against the nut rail, the conductive part m of the slide D is in contact with b , whereby the line h is closed and the bell sounds. Only after tongue C rests firmly against the nut rail does the bell stop working. If the switch is turned over, the conductive parts m and η of the sliders D and D ^{1 are} brought into connection with the electrical connection pieces b and b ^2; This closes line h and the bell sounds. If the tongue C ¹ rests firmly against the nut rail, the insulating surfaces c of the slides D and D ^{1 come} into contact with b and & ² , whereby the line h is interrupted again and the bell comes to rest. If, on the other hand, the tongue C ¹ does not lie down

Claims (1)

firmly attached to the nut rail, the conductive part η of the slide Z) ¹ remains in contact with £> ² , the line h remains closed and the bell sounds until the tongue C ¹ is pressed firmly against the nut rail again. • Patent claim: An electrical monitoring device for railway switches to announce inaccurate switch positions, characterized by the connection of the switch tongues C and C ¹ each with a slide D respectively. Z) ¹ , which respectively with an Stromschlufsfläche m. η and two isolating surfaces cd respectively. cf at both ends of the Stromschlufsfläche m respectively. η is provided, for the purpose of mediating the Stromschlufsfedern b respectively. έ ² to temporarily close the circuit of a bell when changing the turnout and to interrupt it again in the end positions of the turnout. For this purpose ι sheet of drawings.