Improvements in Certain Brake Mechanism for Railway and other similar Vehicles.
Year: 1893

page_text: Date of Application, 24th Jan., 1893
Complete Specification Left, 24th Nov., 1893-Accepted, 20th Jan., 1894
PROVISIONAL SPECIFICATION.
Improvements in Certain Brake Mechanism for Railway and other
similar Vehicles.
I, LUKE ROBERTS, of Union Foundry, Cutler Heights, Tong, in the County of
York, Engineer, do hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in the brake mechanism for which Letters
Patent No. 10,151 were granted to me on the first day of July A.D. 1890. The
said improvements are particularly applicable to railway waggons and other similar
vehicles usually coupled together in numbers and the principal object of the
invention is to enable the brake to be taken off by pressure upon the buffer or
buffers.
For this purpose I disconnect the draw-bars at each end of the vehicle from each
other so that they are capable of independent motion but they are each arranged to
take off the brake when power is applied to them to move the vehicle. One or
both of the buffers at each end of the vehicle is or are also arranged in connection
with the brake mechanism or the draw-bar in such a manner that when pressure is
applied to the said buffer or buffers the motion thereof takes off the brake.
By this arrangement a train of vehicles fitted with this brake may be started
forwards or shunted backwards with every facility.
A convenient arrangement is to fit the brake to be applied by the weight of one
side only of the vehicle and to arrange it to be withdrawn by one buffer at each
end of the vehicle. In this case the lifting mechanism operated by the draw-bar
may
be mounted on a support carried by the axle boxes at one side. A lateral
projection or arm may be fixed upon the draw-bar to connect it to the brake
mechanism and for the buffer to engage and the draw-bar is so arranged that it is
capable of certain longitudinal motion without acting upon the draw-bar spring.
The buffer fitted in connection with the brake may be free to move outwards when
the draw-bar is extended.
To facilitate shunting operations or moving the waggons singly provision may be
made at one or both sides of the vehicle for the attachment of a chain horse
arranged to remove the brake in a similar manner to the draw-bar. This provision
may consist of a sliding rod or bar capable of a limited longitudinal motion fitted
at each side of the vehicle and provided with one or more eyes for the attachment
of the chain and connected in any convenient manner to the brake mechanism.
A hand lever may also be provided to take off the brake.
Dated this 23rd day of January 1893.
DRACUP & NOWELL,
Bradford, Agents.
COMPLETE SPECIFICATION.
Improvements in Certain Brake Mechanism for Railway and other
similar Vehicles.
I, LUKE ROBERTS, of Union Foundry, Cutler Heights, Tong, in the County of
York, 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 improvements in the brake mechanism for which Letters

page_text: Patent No. 10,151 were granted to me on the first day of July A.D. 1890. The
said improvements are particularly applicable to railway waggons and other similar
vehicles usually coupled together in numbers and the principal object of the
invention is to enable the brake to be taken off by pressure upon the buffer or
buffers.
For this purpose I connect the draw-bar at each end of the vehicle to each other
in such a manner that they are capable of independent motion but are each arranged
to take off the brake when power is applied to them to move the vehicle. One or
both of the buffers at each end of the vehicle is or are also arranged in connection
with the brake mechanism or the cross-bar in such a manner that when pressure is
applied to the said buffer or buffers the motion thereof takes off the brake.
By this arrangement a train of vehicles fitted with this brake may be started
forward or shunted backward with every facility.
A convenient arrangement is to fit the brake to be applied by the weight of
one side only of the vehicle and to arrange it to be withdrawn by one buffer at
each end of the vehicle. In this case the lifting mechanism operated by the
draw-bar may be mounted on a support carried by the axle boxes at one side.
Reference is to be had to the accompanying sheet of drawings forming a part of
this Specification, in which similar letters of reference indicate corresponding parts
in each of the figures.
Figure 1, represents a side elevation of a railway truck fitted with my improve-
ments in which the horns and spring at one end are omitted to show certain other
parts in full.
Figure 2, is a plan view of the same with the bottom of the truck omitted and
a portion of one of the side beams broken away to disclose the parts beneath.
A simple and efficient method of arranging the lifting mechanism to remove
the brake by the draw bar consists in connecting the axle boxes A, A at one side
of the vehicle by the bar B the ends of which are passed through slots in the axle
boxes prepared to receive them and, their outer ends turned up as shown by C, C
to form fulcra for the lifting levers D, D which latter are forked at their outer
ends to facilitate pivoting them to C, C by the bolts a, a and also to enable the
springs at that side (one spring is represented by E Figure 1) to more or less lie
in the forked end and be suspended therein by the bolts b, b. B is also fixed by
the bolts I, I to lugs upon the axle boxes. The inner ends of D, D are connected
together by the box or coupling piece F into which they freely pass and this
coupling piece is provided with a pin G freely passing through the block or swivel
piece H fixed by its trunnions c, c in the bifurcated limbs J, J of the forked arm K,
keyed or otherwise rigidly secured upon the rocking shaft L. The nuts d, d are
screwed upon the top of G to bear upon the upper face of H. The rocking
shaft L is mounted at its outer end in the bearing M formed on B and its inner
end is mounted in the hanger N fixed to the central framework of the truck.
rocking shaft in many respects resembles the ordinary hand brake shaft and is
provided with a double armed lever O the ends of which are pivoted to the brake
rods P, P connected to the brake levers Q, Q arranged in the ordinary way to
press the brake blocks R, swung by the links S against the wheel T. The draw
bars U, U instead of being rigidly connected to the straps V, V of the buffer
springs W, W have a slot d formed in them through which the pin or cotter e is
passed so as to allow the draw bar a certain amount of independent longitudinal
motion before tending to move the trucks. The draw bars are connected by the
rods X X mounted upon the studs f,f projecting from U, U to the lever Y having
an arm Z projecting above and below in a similar manner to the arms i and w
of the lever Z' hereinafter referred to. The lever Y is secured upon the rocking
shaft g mounted in bearings h, h secured to the underside of the frame-work. The
arm of the lever Z1 at the other end of the rocking shaft g is connected by the
rod to the top of the long arm k rigidly secured upon the rocking shaft L.
This
It will be obvious from the foregoing description that when power is applied to
either of the draw bars to move the vehicles the draw bar is first moved

page_text: longitudinally within the limits allowed by the slots d which has the effect of
partially turning the rocking shaft g and the motion of this shaft is communicated
to the shaft L through the medium of the arm i the rod j and the arm k thereby
withdrawing the brake shoes from the wheels and at the same time slightly raising
the side of the vehicle shown in Figure 1 by means of the forked arm K lifting
the inner ends of the levers D. And as soon as the power to move the vehicle is
removed from the draw bar the weight of the body of the vehicle through the
medium of the levers D, D and connecting parts turns the rocking shaft L to apply
the brake and at the same time restores the parts to their normal position when
the vehicle is at rest. The links or short chains m, m are introduced into X, X to
prevent one draw bar from being moved by the motion of the other and also to
allow the buffer mechanism to operate the shaft g in the manner hereinafter
described without moving the draw bars.
.
To enable an inward movement of either of the buffers n, n (at one side of the
vehicle) to operate the lever k to remove the brake the buffers n are so arranged
that their spindles p, p are capable of a certain amount of longitudinal motion
before the shoes 9, 9 engage the ends of the buffer springs W, W and these shoes
have each a projecting piece r, r on their under sides adapted when the buffer
spindles are moved longitudinally to engage the end of the rods t and v.
The
rods and have their outer ends supported in guide eyes u, u secured to the side
frame and the inner end of t is directly connected to the long arm k whilst v is
connected to the arm w of Z'. From this description it will be clearly seen that
an inward movement of one or both of the buffer spindles will remove the brake
and operate the levers D in a similar manner to an extension of either of the draw
bars and that when the inward pressure upon the buffer is removed the weight of
the body of the vehicle will in a similar manner re-apply the brake.
To enable the brake to be removed by hand the forked end of the hand lever y
is arranged to bear against the shoulders on the rod t (as shown by the broken
lines representing this lever in both figures) so that raising such lever removes
the brake and lowering such lever applies it.
It is obvious that in those railway vehicles not fitted with spring buffers, false
Luffers or pushes may be provided projecting beyond the buffer beam of the
vehicle and adapted to be operated in the same manner as the spring buffers to
remove the brake.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is:
1. The combination with a railway or other similar vehicle in which the brake
is applied by the weight of the vehicle, of mechanism whereby the inward
movement of the buffer withdraws the brake, substantially as herein shown and
described.
2. In a railway or other similar vehicle, brake mechanism applied by the
weight of the vehicle and adapted to be withdrawn by mechanism in connection
with both the draw bar and the buffers, substantially as herein shown and
described.
3. In a railway or other similar vehicle fitted with brake mechanism applied by
the weight of the vehicle, mounting said brake mechanism upon a support
carried by and connecting the axle boxes at one side of the vehicle, substan-
tially as herein shown and described and illustrated in the accompanying sheet of
drawings.
Dated this 22nd day of November 1893.
DRACUP & NOWELL,
Bradford, Agents.