Improvements relating to Automatic Brakes for Railway and other similar Vehicle.
Year: 1899

page_text: Date of Application, 30th Oct., 1899-Accepted, 9th De`.,
1899
[Communicated from abroad by LA SOCIÉTÉ DES FREINS AUTOMATIQUES "STOP,"
of 74, Boulevard Haussmann, Paris, France.]
Improvements relating to Automatic Brakes for Railway and other
similar Vehicle.
I, ERNEST DE PASS, of 78, Fleet Street, in the City of London, Fellow of
the Chartered Institute of Patent Agents, do hereby declare the nature of this
invention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement, reference being had
to the accompanying drawing and to the letters marked thereon, that is to say:-
The present invention has for its object an automatic arrangement for operating
rope and cord-brakes and for shoe brakes, and is more especially designed for
use on railways.
And in order that the said invention may be readily understood, I will describe
the same fully with reference to the accompanying drawing. A is a railway van
or carriage of which a, b, are the buffers. Each of these buffers is coupled by a
connecting rode or d to a lever e movable about a pivot f. To one of the ends
of the lever e is attached the end g of the rope-brake, the other end of which is
secured at h to the frame of the vehicle. This rope controls, by any suitable
means, the operating device of the brake-shoes i. At its other end, each of the
levers e bears against a strong spring k which tends always to push back its end
of the lever, that is to say, to keep the brake out of action. The brake therefore
cannot act so long as the speed of the vehicle A is equal to that of the vehicles
between which it is placed, but as soon as the carriage A tends to run quicker
than that which precedes it, or slower than that which follows it, one or other of
the buffers a, b, will be thrust inward. This movement will bring about the
compression of the spring k, the rotation of the lever e, and consequently the
putting on of the brake.
The braking of the vehicle A will necessarily effect the braking of the follow-
ing vehicles successively, so that it will be sufficient for the brakesman to brake
the tender, in order to rapidly stop the whole train.
At the moment of starting the train, all the buffers will regain their position
under the action of their springs, and of the springs k, and the brakes will he
taken off.
A similar result can be obtained by attaching the ends of all the levers corre-
sponding to the springs to a single cable extending from the head to the tail
of the train.
The braking of the train can be effected by the brakesman applying, by any
suitable means, a sufficient traction on the cable to put on all the brakes, while
on slackening the cable the springs k take off the brakes.
If desired, a suitable compensating device may be placed between any two
consecutive vehicles, so as to maintain constant the length of cable between each
insecutiva Laran

page_text: Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is ―
1. An automatic arrangement for use in the application to railway and other
similar vehicles of rope and shoe brakes, wherein one of the ends of the hope is
made fast to the frame work and the other is attached to the end of a lever capable
of turning about a pivot, said lever being actuated on the one hand by a spring
in the direction corresponding to the inoperative position of the brake, and on
the other hand in the opposite direction, for the purpose of bringing about auto-
matically the braking of all the carriages of the train directly the speed of the
carriage which precedes it is diminished, substantially as described.
2. An automatic arrangement for rope brakes according to the preceding claim,
consisting in connecting by a continuous cable all the controlling levers, so that
by pulling upon this cable the brakesman can simultaneously brake all the
vehicles of the train, substantially as described.
3. My improvements relating to automatic brakes for railway and other similar
vehicles, substantially as herein before described and for the purposes set forth.
Dated this 30th day of October 1899.
ERNEST DE PASS,
Chartered Patent Agent.