Improvements in or relating to Brakes for Railway Rolling Stock.
Year: 1895

page_text: Date of Application, 11th Apr., 1895
Complete Specification Left, 13th Jan., 1896-Accepted. 15th Feb., 1896
PROVISIONAL SPECIFICATION.
Improvements in or relating to Brakes for Railway Rolling Stock.
We, THOMAS HODDER HEARD of 7 Loudoun Street, Derby in the County of
Derby, Traveller, and WILLIAM KIRKLEY BIRKINSHAW of Old Croft House,
Quarndon, Derby, in the County of Derby, Merchant, do hereby declare the
nature of this invention to be as follows:-
This invention relates to brakes suitable for railway rolling stock and especially
designed for use with ordinary goods' wagons, the object being to provide means
by which upon turning a single wheel or arm the brakes may be applied to the
four wheels with which such vehicles are usually provided, or to some of the
wheels.
In carrying out our invention we prefer to proceed as follows:-We provide
the vehicle with brakes which may be supported in any suitable frame-work hangers
or the like and between the brakes and passing transversely across the vehicle we
provide a rod or equivalent screwed at each end, preferably to opposite hands, and
having a handle, hand-wheel or equivalent at each end by which it may be turned
from outside the vehicle. The screwed portions of the rod carry nuts connected
by toggle joints, links or other suitable connections with the brake blocks so that
when the rod is turned the toggles or equivalent are so moved as to press the
blocks upon the wheels or withdraw them from the wheels.
Instead of employing a screwed rod the rod or equivalent may be provided
with inclined planes which operating upon other inclined planes may produce the
same effect of applying or withdrawing the brake blocks. The rod may be
operated by a lever, and if a lever be preferred to the previously described screw,
the lever may be arranged to rotate the screwed rod first described by means of a
suitable nut and screw thread, cam or other device.
Instead of having the rod screwed to different hands the threads may
both run
the same way and may be close together instead of one at each end of the rod ;
or one thread only at any convenient part of the rod may be used the toggles etc.
being varied as required. Where it is desired to use the present apparatus so as
to save the expense of new apparatus and also effect the application or removal of
the brakes from either side of the carriage, we prefer to remove the present long
lever which is placed upon the end of the shaft which applies the brakes and in
place of that to apply a worm wheel or worm segment and operate this by a
worm conveniently placed and having a handle or hand wheel by which it may be
rotated. Any convenient arrangement may be adopted by which the worm
segment can be operated from either side of the vehicle.
Dated this 11th day of April 1895.
BOULT & WADE,
Agents for the Applicants.

page_text: Improvements in or relating to Brakes for Railway Rolling Stock..
We, THOMAS HODDER HEARD of 7 Loudoun Street, Derby, in the County of
Derby, Traveller, and WILLIAM KIRKLEY BIRKINSHAW, of Old Croft House,
Quarndon, Derby in the County of Derby, Merchant, 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 brakes suitable for railway rolling stock and especially
designed for use with ordinary goods' wagons, the object being to provide means
by which upon turning a single wheel or arm the brakes may be applied to the
four wheels with which such vehicles are usually provided, or to some of the
wheels.
In carrying out our invention we prefer to proceed as follows;-We provide
the vehicle with brakes which may be supported in any suitable frame-work,
hangers or the like and between the brakes and passing transversely across the
vehicle we provide a rod or equivalent screwed at each end, preferably to opposite
hands, and having a handle, hand-wheel or equivalent at each end by which it may
be turned from outside the vehicle. The screwed portions of the rod carry nuts
connected by toggle joints, links or other suitable connections with the brake
blocks so that when the rod is turned the toggles or equivalent are so moved as to
press the blocks upon the wheels or withdraw them from the wheels.
In the accompanying drawings
Fig. 1 is an underside view,
Fig. 2 a side elevation and
Fig. 3 an end elevation of a railway wagon, provided with brake apparatus
constructed according to this invention.
Like letters indicate like parts throughout the drawings.
A is the body of the wagon, and A¹ the under-frame thereof, both of which
may be of any ordinary construction as may also be the wheels B and the
accessories connecting the wheels to the wagon-body. C is a shaft supported in
suitable brackets or bearings A secured to the under-frame A, and having right
and left-handed screw-threads C¹ thereon. D are nuts threaded on the screws C¹
and each of which is provided with a lug to which is pivoted one end of a link E
whose other end is pivoted to a bar F, common to both links. The two links E
cross each other but are not connected together at the point of intersection, and
one of them may be formed double to allow the other (which would be single) to
pass through it."
G are the brake blocks or shoes rigidly secured or if desired pivoted to the
levers H, which are pivoted at their upper ends to the wagon body A. The
levers H appertaining to the brake blocks of co-axial wheels B are connected
together, one set by the before-mentioned bar F, and the other set by a similar
bar F, and the two sets of levers H are connected together by links or rods I.
On each end of the shaft C is secured a crank handle (2 by means of which
the brakes may be applied or released.
"
“
On each of the nuts D we provide a finger or pointer J which extends upwards
and is adapted to point to the word "on or off" depicted as shown in Fig. 3,
on the end of the wagon, to indicate the position of the brakes and whether they
are applied or not.
By turning the crank-handles C in one direction the nuts D are moved outwards
from each other and the bar F through the links E is drawn nearer to the shaft C
and the brake blocks are consequently drawn against the wheels B ; the arrows in
Fig. 1 indicate this operation. By turning the crank handles C in the reverse
direction the brake blocks G are moved away from the wheels B. The links E

page_text: in the before-mentioned operations act as it were like half of a toggle-lever
device.
We may employ one or more springs, counterweights or equivalent for moving
the brake-blocks away from the wheels, under which arrangement we could connect
the nuts D to the brake-blocks G by means of chains or other flexible devices,.
passing where desired around suitable guide rollers.
The arrangement shown in the drawings is that which we prefer to employ on
"dumping" wagons of the class in which the floor is provided with doors adapted
to open downwards, as in this form of the brake apparatus there are no parts to.
interfere with the opening and closing of the doors; in other types of wagon we
may either employ the device before described or one in which the shaft C is
arranged between the wheels B and connected by toggle-levers with the brake-
blocks which in this example operate upon relatively-opposite sides of the wheels..
Instead of transmitting to the brake-blocks the motion obtained from the right
and left handed screwed shaft by the means before described we may employ any
other devices for that purpose.
Having now particularly described and ascertained the nature of our said inven--
tion, and in what manner the same is to be performed, we declare that what we-
claim is ;-
1. The combination with railway brake apparatus of a right and left handed.
screwed shaft for operating it.
2. In railway brake apparatus the combination of brake shoes right and left
handed screwed shaft and means for connecting the two so as to operate the
brakes.
3. In railway brake apparatus the combination with two brake shoes or blocks
and a bar F connecting them together of two intersecting links such as E two
nuts such as D and a right and left handed screwed shaft such as C C¹ substantially
as described and illustrated in the accompanying drawings.
4. In railway brake apparatus the combination with a right and left handed
screwed shaft such as C C and nuts such as D thereon of one or more fingers or
pointers such as J substantially as and for the purpose described and illustrated.
in the accompanying drawings.
Dated this 10th day of January 1896.
THOMAS H. HEARD.
W. K. BIRKINSHAW..
Boult & Wade,
Agents for the Applicants..