DE604C - Railway train barrier. I. - Google Patents

Description

1877.

Class 20.

CARL STAHMER in GEORG-MARIENHÜTTE near OSNABRÜCK.

Railroad train barrier.

, Patented in the German Empire on August 17, 1877. Longest duration: October 24, 1891.

The requirements that are made of an appropriate railroad train barrier are the following:

1. Before closing the barrier, one should a bell will sound for a certain period of time.

2. The signaling device should be arranged in such a way that the signal from the guard is not arbitrary can be omitted.

3. When closed, the barrier should be lifted by any trapped passers-by of a tree can be opened.

4. This opening should be automatic on Indicate the status of the guard by a bell signal.

5. At night it should be easy to see from the train and from the path whether the barrier is open or is closed.

ι. The opening and closing of the barrier is done by a chain without end, in which wire is inserted, as far as only a simple pull to propagate. - This chain is wound on sqmm guards stand at a small chain drum of A 9, runs back to the drum A through the rollers ACD.

Between the rollers B and C there is a weak round iron rod ί 850 mm long, which carries a collar at both ends.

This rod goes through a rotatable sleeve attached to the tree m. If the barrier is closed and should be opened, the keeper rotates the chain drum in the direction of arrow a. - The tree is carried along by the collar c of the bundle iron bar inserted between rollers B and C.

The barrier gets into the punctured chain

with round iron tange in the - | ■ -J drawn

Position.

When the barrier is closed, the keeper will turn the other way round; however, the barrier will not begin to close until the collar d of the round iron rod rests against the rotatable sleeve m and takes it with it.

During this time, that is, from the beginning of the rotation of the winding drum to the application of the collar d to the sleeve m , the roller B moved by the chain will set a bell connected to it into action.

2. Since the pole ί always has to run through its entire length before the tree is lowers, it is also not possible that the prelude can be omitted. The relationship the crank radius to the drum radius has been chosen to be large, so that:

a) the force required to move the mechanism is small, and

b) the movement of the chain is slow and thus achieves the longest possible pre-ringing will.

3. Both barrier trees are now so coupled with one another that they are always at the same time have to go up and down. For this purpose, there is an equal arm on the axis of rotation of both trees A lever attached, which is firmly connected to the tree by a screw.

Each lever is held by a chain on both sides. These two chains go down, run over rollers EF respectively. £ ,. and F ₁ ; cross each other under the sleepers of the railway, so that the rear end of one tree is always connected to the front end of the other.

In the horizontal intersection, a strong wire is switched on, which runs in tubes.

To achieve the easiest possible gait and to avoid all tension in the crossed chain To avoid this, the levers are turned half the deflection angle against the barrier scheduled. From this it can be seen that it makes no difference whether one or the other barrier is used lifts, the corresponding one will always follow the movement. It does not matter whether the transition is at right angles or at an angle to the path.

4. In the closed state (the position shown), the collar d of the round iron bar s, which is switched on in the chain without end, is firmly attached to the sleeve m , and is the chain that goes over the upper roller B , as well as the one corresponding to this role Wire stretched to the winding drum.

If the tree is now lifted by the passer-by, the whole chain and with it the winch drum at the guard's stand is moved, the latter in the direction of the arrow a. A bell is connected to the winding drum in this way;

that it is put into action in this direction of rotation. - It should also be noted here, that a lengthening of the chain resulting from use or Wire pull without At the end, between winch drum and tree, no influence on the safe functioning of the whole Facility exercises, because after each direction of movement one wire rope hangs slack. -

5. Finally there is a rotating lantern, with different colored discs, with the rotating ax connected to the barrier by slotted levers and lifting thumbs, which follow the movements of the same must follow. In the open state z. B. always the red disk and in the closed Always state that the white disk is facing the longitudinal axis of the path.

The trees are as balanced as possible, so that when they are opened by the passer-by and When the keeper closes, little exertion is necessary, which can only be achieved by the Friction in the various tenons; Wires etc. is absorbed.

For the sake of simplicity and safety, wrought iron was used almost exclusively. With the exception of the rollers, counterweights and winding drum, all other parts are made of this material. Any Repairs to the barrier can therefore easily be carried out in any forge.

This arrangement ensures safe functioning by avoiding all substances Movements, and secured by great power transmission, easy handling and great duration. The simple construction of the train barrier also results in low manufacturing costs and a few respectively quick and easy repair.

The coupling of the two barrier trees through the, BEZW on the roles EF . E ₁ and F ₁ running cross chain can also be used with impact barriers; Likewise, the whole construction of this barrier can be carried out using old railroad tracks instead of wood.

Claims (3)

Patent claim: The train barrier explained above through which 1. a bell will sound for a certain period of time before it closes, 2. at which the signal cannot be arbitrarily omitted, 3 .. which in the closed state can be opened by trapped people by lifting a tree, which opening automatically indicates itself to the guard by a bell signal, and
4. in which it is easy to see from the train and from the path at night whether it is open or closed, in the manner and for the purpose as explained in the above description and in the accompanying one Drawing is shown. For this purpose 2 sheets of drawings.