A New or Improved Friction Brake for Railway Vehicles.
Year: 1890

page_text: Date of Application, 12th Feb., 1890-Accepted, 2nd Aug., 1890
COMPLETE SPECIFICATION.
A New or Improved Friction Brake for Railway Vehicles.
I, PAUL FABIAN of Nicolai Strasse No. 9, Chemnitz in the Empire of Germany,
Civil Engineer, 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 :—
This invention relates to brake devices for railway vehicles and has for its purpose
to provide a friction brake by means of which brake blocks as employed in ordinary
screw brakes are operated in a rapid and effective manner by the live power of the
moving vehicle or train.
Referring to the accompanying drawing
Fig. 1 is a side elevation and partial section,
Fig. 2 a rear view of a railway car with the improved brake applied thereto..
Fig. 3 is a side elevation and partial section of the brake block and lever device on
an enlarged scale.
Fig. 4 illustrates in cross section the device for transmitting the live force of the
moving vehicles to the lever device, and
Fig. 5 is a detail.
The car axle a carries a block or tube b so shaped as to constitute a number of
conic rings and adapted to fit into a correspondingly shaped ring block e revoluble
about a shaft e lodged in a lever d. The block e can be placed in connection with b
by lowering the lever d, which turns loose on the shaft f, by means of the rod h
bolding the same, Figs. 1, 3 and 4. The ring block c Fig. 4, mounted on the gab-pin
of the eccentric diski is rigidly connected therewith, the whole being loosely revoluble
about shaft e.
The excentrici Fig. 3 actuates through connecting rod and lever / the shaft f
whence the movement is transmitted by the usual lever device, employed for every
brake vehicle, to the brake blocks. The cam i is so adjusted as to occupy its highest
position when the brake blocks are disengaged and consequently, when turned slightly
to the right or left, to draw back the connecting rod k and lever 1, thereby approaching
the brake blocks to the wheels. A poised lever q provided on shaft f tends to with-
draw the brake blocks from the wheels. The rod is bifurcated at its upper end and
fitted with longitudinal slots, into which the angle lever p, revolubly secured to
block o, so engages with the pivot provided at its top, as to cause the rod h, when the
angle lever p is raised by means of the pulley s lodged at its other arm to participate.
in this ascent.
บ
A linen led through the stands t, which are provided with guiding- and counter-
pulleys, over all the vehicles of the train and adapted to be operated i.e. pulled on and
released by the known hand- or steam-winding devices, passes underneath the pulley s
Fig. 5 over the pulley u lodged in block o and is then either coupled with the line of
the next car, or, if the vehicle forms the termination of a train, suspended from the
hook ♥ provided on the block o, or, with the reverse position of the vehicle, hung into
the hook fixed on the roof of the car. When the line n which is stretched from the
guard stand of the engine on the starting of the train, is suddenly slackened during
the journey, the angle lever p allows through rod h the lever d to fall down; the
friction rollers b and c come in contact or gear, Figs. 3 and 4, and press the brake
blocks energetically onto the wheels until a frictional sliding takes place.
By the own weight of lever d with friction roller c and excentric i the roller c is
pressed so firmly on the roller b, that through the peculiar shape of the friction
rollers b and c a further transmission, as is required with other friction brakes for
braking large goods trains, is superfluous.
In order to allow the brake to be also operated by hand when a single carriage or

page_text: truck is to be shunted by hand power, which necessitates the friction rollers b and c to
be placed out of contact, a hand lever u is provided for lifting the rod h, and to
maintain, said rod in its raised position, i.e. to keep the rollers band-c out of contact,
a hook y, attached to rod h, is adapted to be hung into the eye or noose z which is
loosely suspended from the vehicle. When the latter is coupled to the train and the
linen pulled from the stand of the guard, the rod, h is; so far raised by the angle
lever p as to lift the hook y out of the noose which then falls back onto the side of
the vehicle..
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is:
A friction brake for railway vehicles consisting of a cam disk i which, being rigidly
connected with a tube or block c, constituting a uniform series of conic rings, is so
movable on a shaft or bolt e, that, at the moment said ring block is geared into a
correspondingly shaped ring block b, rigidly mounted on the axle of the vehicle, the.
live force of the latter, when moving forward or backward, so acts through rod k and
lever on a brake device as is applied to ordinary screw brakes, as to cause the brake
'blocks to be instantly engaged, while, on the shaft or bolt e being raised; the brake
blocks are disengaged, substantially as set forth.
сот feniел 10 Сеп аят
7 nopt
PAUL FABIAN.
Per Huelser & Co.,
142, Fleet Street, London, Attorneys.
PAUL FABIAN.
Per Huelser & Co.,
142, Fleet Street, London, Attorneys.