Improvements in Brakes or Skids for Road Vehicles.
Year: 1892

page_text: Date of Application, 4th May, 1892
Complete Specification Left, 4th Feb., 1893-Accepted, 18th Mar., 1893
PROVISIONAL SPECIFICATION.
Improvements in Brakes or Skids for Road Vehicles.
I, PETER DAWSON, of 88 Great Clyde Street, Glasgow, in the County of
Lanark, North Britain, Distiller, do hereby declare the nature of this invention
to be as follows:--
This invention which relates to improvements in brakes or skids for road
vehicles, forms modifications of, as well as additions to my previous application for
Patent No. 9151, of 1st June 1891, and has for its object to provide a more
efficient means whereby the brake may be applied or taken off without stopping the
vehicle, also when off the brake is in a position as to enable it to be instantly´
applied.
In carrying out my said invention I mount, preferably inside one of the wheels a
suitably shaped iron or other track which is pivotted at its top end to a bracket
secured to underside of vehicle; the said track is also provided with a heel piece
and guiding arm, and it is attached near its lower end to the one end of a movable
tie rod having a spring attached and secured at its top end to the underside of the
vehicle. The said track is so shaped and mounted as to guide the shoe or slipper
on to the wheel (and so brake the vehicle) by means of a wheel or pulley which is
carried by a bracket secured to the top end of one or more side arms whose lower
ends are secured to the side of the shoe, which has its arm cast on its inside as
hitherto and provided with one or more holes to which the chain is attached,
preferably by means of a large link which also serves the purpose of a suspending
link when the brake is off, that is to say, the shoe is suspended in front of the
wheel by means of said link being engaged with a suitable pivotted hook, mounted
underneath the vehicle, and provided with a suitable actuating device which is led
along to the front end of the vehicle so as to enable the driver to apply the brake
when desired without leaving his place or stopping the vehicle.
In order to enable the brake being taken off when desired I provide the chain
with a large link which engages with a suitably shaped slip hook bracket attached
to underside of vehicle and provided with a weighted disengaging device and
actuating cord or rod arrangement which is led along to front end of vehicle and
provided with a ring or eye and hook arrangement, so as to enable the driver to
take off the brake without leaving his place or stopping the vehicle; the said shoe
being prevented from going too far behind the vehicle by means of an auxiliary
chain which is attached to link on end of main chain and to the slip hook bracket
or underside of vehicle as desired. The shoe is preferably made slightly curved in
shape and provided at its front end with gripping corrugations so as to enable the
wheel entering on same with ease.
If desired I may mount the track on the outside of the wheel in lieu of on the
inside in which case the other parts would be altered to suit, or if desired I may
employ a track on both sides of the wheel and provide the shoe with two grooved
wheels or pullies and arms.
The whole thus forming a brake or skid which can be applied and taken off
without the driver leaving his place or stopping the vehicle, and which after being
taken off and lifted up to its normal position by hand is at all times ready for to
be instantly applied.
Dated this 3rd day of May 1892.

page_text: COMPLETE SPECIFICATION.
Improvements in Brakes or Skids for Road Vehicles.
I, PETER DAWSON of 88 Great Clyde Street, Glasgow, in the County of
Lanark, North Britain, Distiller, 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 which relates to improvements in brakes or skids for road vehicles,
forms. modifications of, as well as additions to my previous Patent No. 9151 dated
1st June 1891, and has for its object to provide more efficient means whereby. the
brake or skid may be applied or taken off without stopping the vehicle.
Figure 1 of the accompanying drawings is a side elevation of a lorry having
my improved brake or skid attached.
Figure 2 is a part side elevation and Figures 3 and 4 part end elevations illus-
trating the various positions of same.
Referring to the said drawings, I mount, preferably inside one of the back
wheels A, a suitably shaped iron or other track B, which is pivotted or hinged at
its top end b, to a bracket C secured to the underside of the vehicle; the said
track B is provided with a heel piece b', and guiding arm 63, as shown. The said
track B is also attached at its lower end 63 to the one end of a movable tie rod D,
to the top end of which is attached the one end of a spiral or other spring D¹, the
other end of said spring D¹ being secured to the underside of the vehicle by any
suitable means. The track B is so shaped and mounted as to guide the shoe or
slipper E on to the wheel A (and so brake the vehicle, as shown in Figures 1
and 4,) by means of a wheel or pulley F, which is carried by a bracket, secured
to the top ends of one or more side arms f¹, whose lower ends are secured to the
side of the shoe E by bolts or otherwise; the said shoe E having its arm e cast on
its inner side as hitherto and provided with one or more holes e¹ to which the main
chain G is attached, preferably by means of a large link g, which also serves as a
suspending link when the brake is off, that is to say the shoe E is suspended in
front of the wheel A, (as shown in Figures 2 and 3,) by means of the said link
being engaged with a suitable pivotted hook or lever H, mounted underneath the
vehicle and provided with a suitable actuating device as shown, that is to say the
lever His attached to a cord or wire J, which after passing along underneath
the vehicle is secured by means of a hook and eye arrangement j, at the front end
of the vehicle in such a manner as to enable the driver to apply the brake when
desired without leaving his place or stopping the vehicle, by simply disengaging
the eye from the hook and so permitting the shoe E to fall down in front of the
wheel A, and then into the position shown in Figures 1 and 4.
In order to enable the brake to be taken off when desired, I provide the
chain G with a large link g' which engages with a suitably shaped slip hook K
pivotted to a bracket k mounted underneath the vehicle; the said hook K is
provided with a weighted disengaging lever k¹ and actuating cord, wire or rod k²
which is led along to the front end of the vehicle as shown, so that on the driver
giving the ring on the end of the cord a slight pull forward the hook K would
fall down and so be disengaged from the link g' of the chain G thus taking off the
shoe E, as shown in dotted lines behind the wheel A. Figure 2. The said shoe E
is prevented from going too far behind the vehicle by means of an auxiliary
chain L which is attached to the link g' of the main chain G, and to the slip hook
bracket k, as shown more particularly in dotted lines Figure 2, or it may be
secured to the underside of the vehicle. The shoe E is preferably formed of a
slightly curved shape and provided at its front or entering end with gripping corru-
gations e so as to enable the wheel A to enter on same with ease the moment the
shoe touches the ground, this being assisted by the shape of the track B and the

page_text: action of the spring D' tending to keep the shoe E against the tyre of the wheel A
for about a quarter of its circumference.
As a modification I may mount the track B on the outside of the wheel A, and
correspondingly alter the other parts, such as the shoe and arms, to suit. Or if
desired in some cases I may employ a track on both sides of the wheel and provide
the shoe with two grooved wheels or pulleys and arms. Or in lieu of the rod D
and spring D I may employ a weighted cord or wire and pulley arrangement.
The whole arrangement thus forms a brake or skid which can be applied to the
wheel and taken off without causing the driver to leave his place or stop the
vehicle, and which after being taken off and lifted up to its normal position by
hand, is at all times ready for to be instantly applied. The mode of operating
the brake is as follows:-The shoe when in normal position as shown in full lines
Figures 2 and 3, is suspended in front of the wheel A in such a manner, that on the
driver wishing to apply the brake he disengages the hook and eye j, and so allows
the shoe E to fall down into the position shown in Figures 1 and 4, and so brake
the wheel, which can be released when desired by the driver simply pulling the
cord and so allow the shoe E to trail behind the wheel A, as shown in dotted
lines Figure 2, until the driver leaves his place and lifts up the shoe E to the
dotted position Figure 2, when he then engages or places the pulley F on the
track B and so leaves it in the normal position as shown.
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 :-
1st. In brakes or skids for road vehicles, the means whereby the shoe or brake
may be applied and taken off without the driver leaving his place or stopping the
vehicle, substantially as hereinbefore described and shown in the accompanying
drawings.
2nd. The track B, substantially as and for the purposes hereinbefore described
and shown in the drawings.
3rd. The means whereby when the shoe or brake is off, it is in proper position
behind the wheel, substantially as and for the purposes hereinbefore described and
shown in the drawings.
4th. The general arrangement, construction and combination of the various parts
constituting my improvements in brakes or skids for road vehicles, substantially
as and for the purposes hereinbefore described and shown in the accompanying
drawings.
Dated this 3rd day of February 1893.
JOHNSONS,
115, St. Vincent Street, Glasgow, Applicant's Agents.