IMPROVEMENTS IN BRAKES FOR THE ROLLING STOCK OF RAILWAYS AND TRAMWAYS
Year: 1882

page_text: LETTERS PATENT to William Bosworth Holbech of Hill Cottage Huncote
in the County of Leicester for an Invention of "IMPROVEMENTS IN BRAKES
FOR THE ROLLING STOCK OF RAILWAYS AND TRAMWAYS"
PROVISIONAL SPECIFICATION left by the said William Bosworth Holbech
at the Office of the Commissioners of Patents on the 1st February 1882.
WILLIAM BOSWORTH HOLBECH IMPROVEMENTS IN BRAKES FOR THE ROLLING
STOCK OF RAILWAYS AND TRAMWAYS
For the locomotive engine I make use of any brake but on the carriages and
rolling stock I fix a brake with my improvements attached and whereby the
momentum of the train is made use of to apply the brakes and bring the train
to rest.
Beneath the framing of the carriage I fix a friction pulley wheel a hung by
preference in bearings b b one or both of which are free to move so as to allow the
pulley wheel a to be brought in contact (when desired) with the carriage wheel c or
with a pulley fixed on the axle, of the wheel c.
When the wheel a is in contact with the carriage in motion the chain d d is
wound round the axle 1 of the said pulley wheel a and over the guide wheel e e
thus lifting the end of the brake lever ff to which the chain is attached and thus
applying the brake blocks gggg to the wheels of the carriage and which brake
blocks can be fixed on all the wheels if necessary.
To bring the wheels a & c into contact I make use of the momentum of the
train acting through the medium of the buffers and I prefer to make use of the left
hand buffer at the forward end of the carriage.
A brake being applied to the locomotive engine and its speed retarded the
buffers h, h, of the train which are in contact are pressed in and with them the
rods n, n, to which they are attached-In the center of the framing or in any other
suitable place I fix a cross bar or lever J. J. free to move on a center pink and

page_text: placed in such a position that the buffer rods b. b. with the hinged bars n. n. in
connection with the same may come in contact with either end of the said crossbar and
cause the same to move on its centre. To one or both of the moveable bearings b. b.
I attach a rod i. i. and the other extremity of this rod I bring into contact with
the crossbar J. J. by means of the lever . . and thus the pulley a is brought into
contact with the carriage wheel c. c. whenever the movement of the crossbar will
permit of it doing so, and in this way the movement of the buffers is communicated
to the friction pulley a and the brakes applied through the chain d d as before
described, between the bearings b b and the lever l. 1. I prefer to place a spring
to prevent the buffers acting with too great force on the pulley a.
In order to apply the brake at any desired pressure on the buffers I make the
contact between the buffers b. b. And the crossbar J. J. by means of a sliding block
or dog m on the rod n. n. which can be set by a pin, screw or other suitable means
and to throw the brakes out of gear when necessary for shunting the rolling stock
or for other purposes. I place a connecting joint n. n. between the rods b. b. and
n. n. so that the dog m may be lifted out of contact with the crossbar J. J. by
means of a lever or cam O and which can be actuated by suitable cords or other
communication by the guard or engino driver.
In the guards van I attach similar apparatus to that hereinbefore described for
the carriages but in addition I fix a lever, screw or other suitable mechanism by
which the guard can by hand apply the brake quickly and powerfully-Also to the
ordinary carriages I fix a bar p. with a crank or cam 7 which lifts the brake
lever ff. by hand when necessary and if desired the same can be firmly fixed by
the ratchet q¹ q' with a suitable paul on the handle S.
For use in cuse of accidents or breakage of the carriage couplings I fix a cord
or chain rin n proper position and coupled throughout the train by a spring draw
link of sufficient strength to lift the lever and apply the brake but sufficiently
weak to break away in case of need.
And now having described the mechanism by which the brakes are applied
and the principle of the same I will proceed to stato what I claim as my
Invention
I do not claim the friction pulley or its mechanisin neither the chain d. d. or
lever ff. by which the brakes are put in gear but I claim as my Invention
1st. The hinged bars n. n. by which the brakes are thrown in and out of gear
2nd The sliding blocks or dogs m. m. by means of which the buffers are
allowed to act freely to a certain pressure and after which the brakes are applied.
3rd The crossbar J. J. through which the pressure of the buffer is communicated
and this from either end of the carriage which may happen to be forward.
4th. The lever or cam O whereby the sliding block or dog m is raised and thrown
out of or into gear by the guard or driver
5th The chain whereby the breaks are applied when an accident occurs by
which the couplings are broken or the train becomes disconnected

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said William Bosworth Holbech in the Great Seal Patent Office on
the 1st August 1882.
WILLIAM BOSWORTH HOLBECH of Hill Cottage Huncote, in the County of
Leicester IMPROVEMENTS IN BRAKES FOR THE ROLLINO STOCK OF RAILWAYS
AND TRAMWAYS
For the locomotive engine I make use of any brake, but on the carriages and
rolling stock I fix a brake with my improvements attached whereby the momentum
of the train is made use of to apply the brakes and bring the train to rest.
Beneath the framing of the carriage I fix a friction pulley wheel A hung by
preference in-bearings b, b, which are free to move so as to allow the pulley wheel A
to be brought in contact (when desired) with the carriage wheel c or with a pulley
wheel fixed on the axle of the wheel c. When the wheel A is in contact and also
in gear with the ratchet wheel t the carriage being in motion the chain d, d, is
wound round the axle b' of the said pulley wheel A and over the guide wheels e, e,
thus lifting the end of the brake lever f,, to which the chain is attached and thus
applying the brake blocks g,g.g,g, to the wheels of the carriage. To bring tho
wheels A and c into contact I make use of the momentum of the train. acting
through the medium of the buffers and I prefer to make use of the left hand
buffer h at the forward end of the carriage. The brake being applied to the loco-
motive engine and the speed retarded, the buffers h, h, of the train which are in
contact are pressed in and with them the rods n, n, to which they are attached.
In the centre of the framing or in any other suitable place I fix a cross bar or
lever j,j, free to move on a pin k, and placed in such a position that the buffer
rods h, h, with the hinged bars n, n. in connection with the same may come in
contact with either ond of the said cross bar and cause the same to move on its
centre . To one or both of the moveable bearings b, b, I attach a rod 2, 1, and the
other extremity of this rod I bring into contact with the cross bar j, j, by means
of the lever, by which means the pulley A is brought into contact with the
carriage wheel c or a pulley on the axle of the wheel o whenever the movement of
the crossbar will permit of its doing so, and thus the movement of the buffers is
communicated to the friction pulley wheel A and the brakes applied through the
chain d, d, as before described. Between the bearings b, b, and the lever i, i, I
prefer to place a spring to prevent the buffers from acting with too great force on
the pulley A. In order to apply the brake at any desired pressure on the buffers
I make the contact between the buffers h, h, and the crossbar j, j, by means of a
sliding block or dog m on the rods n, n, which can be set by a pin, screw, or other
suitable means; and to throw the brakes out of gear when necessary for shunting
the rolling stock or for other purpose, I place a connecting joint n¹ n' between the
rods h, h, and n, n, so that the dog m may be lifted out of contact with the cross-
bar by means of a lever or cam o, which can be actuated through suitable cords
or other communications by the guard or engine driver. To the guard's van I
attach similar apparatus to that herein before described as suitable for the carriages,
but, in addition I fix a lever, screw, or other suitable mechanism with which the
guard can by hand apply the brake quickly and powerfully. Also to the ordinary
carriages I fix a bar p, with a crank or cam g, by means of which the brake lever
can be lifted by hand when necessary, and if required the same can be firmly fixod
by the ratchet with a suitable pawl on the handle. For use in case of accident
or breakage of the carriage coupling I fix a cord or chain rin a proper position and
coupled throughout the train by a spring draw link of sufficient strength to lift the
lover and apply the brake but sufficiently weak to break away in case of need.
0

page_text: Having now described the mechanism by which the brakes are applied and the
principle of the same I will proceed to state what I claim as my Invention.
I do not claim the friction pulley or its mechanism nor the chain d, d, or lever f, f,
by which the brakes are put into gear, but I claim as my Invention
1st The hinged bar n by which the brakes are thrown in and out of gear.
2d The sliding block or dog m by means of which the buffers are allowed to
act freely to a certain pressure after which the brakes are applied.
3d The cross har j,j, through which the pressure of the buffer is communicated,
and this from either end of the carriage which may happen to be forward.
4th The lever or cam o whereby the sliding block or dog mis raised and thrown
out of and into gear by the guard or driver.
5th The chain r whereby the brakes are applied when an accident occurs by
which the couplings are broken or the train disconnected.
6th The ratchet wheel and the pawl u by which the friction pulley A is
brought into gear and which enables the carriages to back without applying the
brake and allows the brakes to be put entirely out of gear when required.
In witness whereof I the said William Bosworth Holbech have hereunto set
my hand and seal this Thirty first day of July in the year of our Lord One
thousand eight hundred and eighty two
TATHAR