Improvements in Brake Apparatus for Railway Wagons and Carriages.
Year: 1893

page_text: Date of Application, 11th Apr., 1893
Complete Specification Left, 15th Sept., 1893-Accepted, 11th Nov., 1893
PROVISIONAL SPECIFICATION.
Improvements in Brake Apparatus for Railway Wagons and
Carriages.
We, GEORGE EARL CHURCH, Civil Engineer, of Dashwood House,
London, E.C. and GEORGE WATSON ETTENGER, Mechanical Engineer, of
12 Church Street Barrow-in-Furness, England do hereby declare the nature of
this invention to be as follows:-
This invention relates to that description of brake apparatus wherein the brake
blocks are applied to two or more wheels on opposite sides of such vehicles, the
two opposite brake blocks being connected to the ends of a transverse beam
suspended from the under frame or from the bogie frames or other part of
the vehicle.
According to this invention the said transverse beam carrying the brake blocks
is constructed of a metal tube on the ends of which are fitted metal caps, the
extended outer ends of which are made of a square or other suitable section for
fitting into the correspondingly formed bosses of the metal brake blocks which are
secured thereto by a screw bolt passed through a hole in the end of the cap, before
this is fitted on the tubular beam.
to
On the upper and lower sides of the caps near their inner ends are formed oblique
lugs through holes in which are passed the ends of truss rods that serve
strengthen the tubular beam the ends of which rods are secured by nuts.
Between
the said lugs and the part of the cap on which the brake shoe fits, is left a space,
for the reception of the loop of a hauger strap from which the brake beam is
suspended, the said loop being held in position by a shoulder on the cap at one side,
and by the side of the brake block at the other side.
The beam being thus held loose in the loops of the hangers, it is free to revolve
partially therein as the brakes are applied and released thus ensuring a perfect
fit of the brake shoes against the wheels, and consequently a uniform wear
thereof.
The truss of the beam is formed by the above described two truss rods, secured
at the ends to the caps of the beam, and passing over a strut, which is by preference
made of a metal band formed into a loop round the brake beam, the two halves of
the band being secured together at a small distance apart by distance pieces and
rivets or bolts over one of which the truss rods pass, while the end bolt serves
for the attachment of the brake lever or other parts of the brake gear.
Dated this 11th day of April 1893.
ABEL & IMRAY,
Agents for the Applicants.
COMPLETE SPECIFICATION.
Improvements in Brake Apparatus for Railway Wagons and
We GEORGE
Carriages.
EARL CHURCH, Civil Engineer, of Dashwood House,
London, E.C. and GEORGE WATSON ETTENGER, Mechanical Engineer, of
12 Church Street, Barrow-in-Furness, 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 that description of brake apparatus wherein the brake
blocks are applied to two or more wheels on opposite sides of such vehicles, the two

page_text: opposite brake blocks being connected to the ends of a transverse beam suspended
from the under frame or from the bogie frames or other part of the vehicle.
According to this invention the said transverse beam carrying the brake blocks
is constructed of a metal tube on the ends of which are fitted metal caps, the
extended outer ends of which are made of a square or other suitable section for
fitting into the correspondingly formed bosses of the metal brake blocks which are
secured thereto by a screw bolt passed through a hole in the end of the cap, before
this is fitted on the tubular beam.
On the upper and lower sides of the caps near their inner ends are formed
oblique lugs through holes in which are passed the ends of truss rods that serve to
strengthen the tubular beam, the ends of which rods are secured by nuts. Between
the said lugs and the part of the cap on which the brake shoe fits, is left a space,
for the reception of the loop of a hanger strap from which the brake beam is
suspended the said loop being held in position by a shoulder on the cap at one side
and by the side of the brake block at the other side.
The beam being thus held loose in the loops of the hangers it is free to revolve
partially therein as the brakes are applied and released thus ensuring a perfect fit
of the brake shoes against the wheels, and consequently a uniform wear thereof.
The truss of the beam is formed by the above described two truss rods, secured
at the ends to the caps of the beam, and passing over a strut, which is by preference
made of a metal band formed into a loop round the brake beam, the two halves of
the band being secured together at a small distance apart by distance pieces and
rivets or bolts over one of which the truss rods pass, while the end bolt serves for
the attachment of the brake lever or other parts of the brake gear.
The said improvements are shewn on the accompanying drawings. Fig. 1 shews
a front view of the brake beam, Fig. 2 a plan; Fig. 3 a cross section at X X Fig. 1.
Fig. 4 an end view of the beam, brake shoe and hanger strap and Fig. 5. a
longitudinal section of the end of the beam and cap.
The beam g is constructed as a metal tube on the ends of which are fitted metal
caps which bear with a shoulder against the end of the beam, as shewn at Fig. 5.
The caps have two opposite oblique lugs or eyes through which pass the
ends of two truss rods ii, the middle parts of which are brought together between
the cheeks of the strut or king post j, which is formed of a metal band bent round
the middle of the brake beam, the two sides being secured together by rivets with
distance pieces, over one of which the truss rods ii are passed as shewn.
On screwing up the nuts on the truss rods it will be seen that these draw the
caps tightly against the ends of the beam g.
The strut is formed with an eye j' at the end to which is connected the brake
lever K or other gear for actuating the brakes.
The ends of the caps h are formed either of a square section as shewn or of any
other suitable section for receiving the sockets of the metal brake shoes / which fit
against a shoulder h² of the cap, these shoes are secured in position by means of a
screw bolt m, that is passed through a hole in the closed end of the cap before this
is fitted on to the beam g, the nut of the bolt being tightened up against a washer w
fitted against the outer face of the shoe.
The cap his formed with a second shoulder ³ and on the part of the cap between
this and the inner side of the shoe is fitted the eyes of hangers o by which the brake
beam is suspended from the bearing bar W.
The beam g with its caps being free to turn in the eyes of the hangers, it will be
seen that the shoe will automatically adjust itself to the surface of the wheel when
the brakes are applied. The beam g is also connected by safety chains p to the
bearing bar.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, we declare that what we
claim is:-
1. Constructing the brake beams of railway carriages or wagons of a tubular bar

page_text: on the ends of which are fitted metal caps carrying the brake shoes, and which
have lugs or eyes to which are secured truss rods passing over a central strut or
king post, the end of which serves for attachment of the brake actuating gear.
2. In a brake beam such as is referred to in the first claim securing the brake
shoes on the ends of the cap by means of bolts passed through the closed end of
the cap and through a washer on the outer side of the shoe substantially as
described.
3. The improved construction of brake gear combined and arranged as herein
described.
Dated this 15th day of September 1893.
ABEL & IMRAY,
Agents for the Applicants.