DE42044C - Lock for level crossings of railway cast iron - Google Patents

Description

IMPERIAL

PATENT OFFICE

CLASS 20: Railway operations.

(Rio de Janeiro, Brazil).

With the present closures, the train is initially shown by a set up at the transition Signal on and then close after a certain eviction period Crossing.

To both views of the level transition A, the closure of which occurs through two-winged doors B and B ^} , the wings of which close the track when the transition is open, z. B. 200 m on one side of the rail curved rotatable lever C and BEZW. C ¹ and in 20 to 30 m just such levers D respectively. D ¹ arranged so that they protrude slightly over the track.Each lever D is connected at the other end by a joint E to the lower arm G ^{1 of} an angle lever mounted in F, the other arm G ^{2 of which} by means of a rod H with one in front of the transition slider arranged below the track / respectively. J ^{1 is} connected; the two sliders are on the one hand by rods J respectively. J ¹ in connection with a sunk in the middle of the transition double crank Q and on the other hand by rods M respectively. M ¹ with wings B. The outer levers C and C ¹ act in the same way on angle levers G ² G ¹ . The lever arm G ² belonging to C ¹ is connected by wire cables to the lever arm G ^{2 belonging to D 1} ; on the other hand, both levers C and C ¹ are connected to the signal S by the lever arms G ² and cables ^{S 1} .

If the transition is approached by a train from the direction of the arrow in FIG. 2 and the first wheel hits the lever C, this is depressed and sets the signal to "locked" by pulling the cord, etc. S ^1. As soon as the first wheel then acts on the lever D , the slider / is pushed towards the transition, using the crank Q. to pull the slider I ¹ towards itself. As a result of this movement of the sliding pieces, the doors B , which had hitherto been kept closed on the track, are closed while opening the track on the transition, so that it is blocked. Since the lever C ^{1 was} lowered on the opposite side of the transition as a result of the displacement of the slider / ', the train simply moves away over it. As soon as the first wheel is on lever D ^! reached, which was lifted by pressing down the other levers, this is pressed down, whereby the sliding pieces move away from each other again and the doors close, opening the passage to the track. At the same time, the lever C ¹ also turns off the signal.

When used on double-tracked lines, each track is controlled by only one inner lever D or in the direction of arrival. -D ¹ operated, on the other hand, both levers C and C ¹ are arranged for each track as above. The mode of operation is as above and can easily be seen from FIG. 3.

Claims (1)

Patent entitlement: A lock to be operated by the train itself for level transitions of railways, characterized in that on both sides of the transition a closer and a more distant lever D respectively. C , of which the outer one in the direction of approach sets the blocking signal, the two inner ones, on the other hand, are related to each other and to the door by sliding pieces (IP) in such a way that when each of them is depressed, the door leaves in front of the transition and the Outer lever located in the direction of departure is pulled up so that it switches off the signal and later, when it is pressed down by the train, opens the transition again by lifting the inner lever adjacent to it (Fig. 1 to 3). For this purpose ι sheet of drawings.