Improvements in Certain Brake Mechanism for Railway and other similar Vehicles.
Year: 1894

page_text: Date of Application, 20th Dec., 1894
Complete Specification Left, 21st Oct., 1895-Accepted, 20th Mar., 1896
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 particularly relates to improvements in the brake mechanism for
which I have obtained Letters Patent No. 1,512, dated the 24th day of January 1893,
and its object is to simplify the construction and reduce the weight.
I dispense with the bar or support for the lifting mechanism connecting the two
axle boxes, and instead I mount a comparatively small lever on each of the axle
boxes, or on two only if it is intended to apply the brake by the weight of one side
of the vehicle only. These levers are preferably L shaped and are each mounted
with one arm approximately horizontal over the axle box and its extremity connected
to or resting upon a fulcrum or seat formed in the top of the box. The spring or
a projection thereon rests upon this arm a suitable distance from the fulcrum and
the other arm extends downwards and is connected by a rod to an arm on the
rocking shaft operating the brake shoes.
To enable the said fulcrum to be placed over the centre of the axle box and
axle the spring may be moved nearer to the centre of the vehicle.
The particular shape as well as the "order" of the levers may be modified as for
instance the fulcrum may be placed between the weight and the power.
Dated this 19th day of December 1894.
.
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 particularly relates to improvements in the brake mechanism for
which I have obtained Letters Patent No. 1,512, dated the 24th day of January 1893,
and its object is to simplify the construction and reduce the weight.
I dispense with the bar or support for the lifting mechanism connecting the two
axle boxes, and instead I mount a comparatively small lever on each of the axle
boxes, or on two only if it is intended to apply the brake by the weight of one side
of the vehicle only. These levers are preferably L shaped and are each mounted
with one arm approximately horizontal over the axle box and its extremity cou-
nected to or resting upon a fulcrum or seat formed in the top of the box. The
spring or a projection thereon rests upon this arm a suitable distance from the
TD 971

page_text: fulcrum and the other arm extends downwards and is connected by a rod to an arm
on the rocking shaft operating the brake shoes.
To enable the said fulcrum to be placed over the centre of the axle box and axle
the spring may be moved nearer to the centre of the vehicle.
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 such parts of a railway truck as are
necessary to illustrate the application of my improvements.
Figure 2, represents a plan view of the same with part of the frame broken
away.
Figure 3, represents a side sectional view on a larger scale of one of the axle
boxes and shaped lever thereon.
Figure 4, represents a plan view of the same.
The top of the axle boxes A, A. are made with side flanges A 2, A2 having
bearings A 3, A3 formed in them to receive the side pins b, b of the ☐ shaped
levers D, D. The other ends of these shaped levers are connected by the
rods L2, L 2 to the rocking shaft L3 which is connected to the draw bars and two
of the buffers in a similar manner to the shaft L described in the above cited
Specification. The shackles E2 of the springs E, E rest upon the rounded
projections D2 formed on the upper sides of the levers D.
When the shaft L is turned in the direction of the arrow Figure 1 by the
mechanism connecting it to either of the draw-bars or the buffers the brake is
taken off the wheels T, T and the body of the vehicle (represented in the
drawings by the framework T 2) is slightly raised; but as soon as the force turning
L3 is removed the weight of the body of the vehicle, through the medium of the
levers D, D and the rods L2, L 2, reverses the motion of the shaft L 3 and applies
the brake.
In the drawings the brake is only represented as applied to the wheels on one
side only but it may be applied to all the wheels.
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 :
In brake mechanism adapted to be applied by the weight of the vehicle, an
☐ shaped lever or levers supporting the body of the vehicle connected by a rod or
rods to an arm or arios on the rocking shaft to which the brake rods are coupled,
substantially as herein shown and described and for the purpose specified.
Dated this 18th day of October 1895.
DRACUP & NOWELL,
Bradford, Patent Agents.