An Improved Brake for Vans and other Vehicles.
Year: 1888

page_text: Date of Application, 30th Oct., 1888
Complete Specification Left, 30th July, 1889-Accepted, 14th Sept., 1889
PROVISIONAL SPECIFICATION.
An Improved Brake for Vans and other Vehicles.
We JOHN HENRY SHAW of Angel Lane and WILLIAM MORSE of Market Place
West Ham Lane both of Stratford in the County of Essex, Engineers, do hereby
declare the nature of this invention to be as follows:
This Invention relates to an improved brake and mode of applying same to vans
and other vehicles, whereby great power is obtained.
.
We employ a radius rod preferably made in two parts as follows, one end is made
solid and jointed, and this part is firmly attached to the axle close to the wheel, the
other part is made cylindrical (having a spirial spring fitted within same) and one
end is made to fit and work upon the solid portion, the other end being bent round at
right angles and a shoulder formed upon it to engage and keep the brake block opposite
the face of the wheel, a hanging bar working on a bearing is fixed to the body of the
vehicle and employed to hold the cylindrical portion of the radius rod with the brake
block attached thereto in position. A nut and steel concave spring washer is
employed to secure and firmly hold the brake block upon the radius rod and against
the shoulder to prevent its droping and fouling the wheel, and yet at the same time
allows it (through the medium of the concave spring washer) an independent motion
so that the whole face of the block impinges against the wheel each time it is
applied.
A lever is fulcrumed on the tubular portion of the radius rod and jointed to an
adjustable screwed rod attached to a projecting piece on the solid part of the radius
rod so that when the lever is raised by means of the chain attached to same and
operated upon from the pedal the cylindrical portion of the radius rod with the
brake block attached thereto is pulled upon the solid part and thus applies the brake,
when the pedal is released the spring reacting within the tubular portion presses
against the solid part of the radius rod and thus releases the brake from the wheel.
The chain to operate the brake is connected to the lever and passes over a pulley
fitted to the hanging bar and thence to one in the centre of the vehicle and so passes
up and is fixed to the pedal, by means of the pulley attached to the hanging bar
(which also moves on its own bearing) the chain is neither practically lengthened or
shortened when the axle recedes through the springs straightening out when the
vehicle is loaded, and thus in conjunction with the radius rod made as above described
the brake block is always kept at the same distance from the wheel and thereby
secures at all times an equal and even pressure from the brake block to the wheels
whether the vehicle is loaded or light.
To still further secure a continuous pressure of the brake upon the wheel we form
the pedal to actuate same with an excentric bearing and also attach thereto a weighted
lever wedge which falls automatically when the pedal is pressed down, and thus firmly
locks the pedal by means of the excentric bearing aforesaid, the weighted lever wedge
upon being slightly raised by the foot releases the excentric and the brake is at once
taken off the wheel.
11
ليمو
1
1000

page_text: "OMPLETE SPECIFICATION.
An Improved Brake for Vans and other Vehicles.
We JOHN HENRY SHAW of Angel Lane, and WILLIAM MORSE of Marke
Place West Ham Lane both of Stratford in the County of Essex, Engineers d
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 an improved brake and mode of applying same to vans
omnibuses and other vehicles and by which system great power and control is
obtained over heavily loaded vehicles when descending inclines or when necessary for
any reason to suddenly check the same. By our arrangement and use of the radius
rod, the hanging bar and concave steel washer herein described the brake block is
always kept opposite the wheel and so impinges and engages the whole face of same
cach time it is applied, and also by means of the aforesaid radius rod the brake
remains at the same distance from the face of the wheel whether the van be
lightly or heavily loaded, as the solid end of the radius rod being fixed to the axle it
recedes with it when the springs straighten out with the load put upon the vehicle,
and the brake block being attached to the tubular portion of the radius rod and also
to the hanging bar (and which also works upon a bearing) it advances towards, or
recerles from the wheel according to the load upon the van, and thus keeps the same
distance from it, and by this means the driver can always exert the same amount of
power upon the brake from the pedal.
Another advantage of our improvements is that the brake can be locked and kept
in position upon the wheel by reason of the excentric action bearing of the pedal
and the weighted lever wedge, so by this arrangement the full power of the brake
can be continuously exerted for any length of time, and yet at the same time it can
instantly be thrown off by slightly raising the weighted lever wedge with the foot.
The accompanying drawings represent at Figure 1 a side elevation of a portion of a
van, shewing the mechanism and action of the radius rod, lever and hanging bar with
brake attached in position, the wheel shown by dotted lines.
Figure 2 plan view of radius rod, the brake and hanging bar, and also the
adjustable screwed rod attached to the lever and solid part of radius rod.
Figure 3 front view of hanging bar and pulley holding brake and radius rod in
position, also shewing lever with chain attached to same and passing over the pulley
to another pulley in centre of van and thence to the pedal. Figure side view of
excentric action pedal and weighted lever wedge for locking same when the brake is
applied.
In each figure the same letters of reference denote similar corresponding parts.
A body of van, B the wheel, C spring and axle, D the solid portion of the radius
rod jointed at D¹ and firmly fixed to the axle C, and E the cylindrical portion of
the radius rod fitting and working upon the solid part at D, this tubular part being-
ibent round at right angles as at E to hold the brake block to the face of the wheel, a
shoulder being formed upon it at E2 to keep the said block in its position. A spirial
spring is fitted into this tubular portion, which pressing against the solid radius rod
keeps the brake block off the wheel when not applied. G two armed or bent lever
jointed at the end of the short arm G2 to an adjustable screwed rod H. and pivoted or.
fulcrumed to a raised or projecting piece on the shoulder of the cylindrical radius rod 4
as at G¹; the chain I to operate the brake from the pedal is attached to the long arm
of the lever. The action is as follows upon the pedal being pressed down the chain lifts
up the long arm of the lever which by being pivoted as above described to the
tubular portion of the radius rod with brake block attached thereto, it draws or pulls
the same upon the solid part of the radius rod and thus applies the block to the face of 5
the wheel, when the pedal is released, the spring reacting between the two parts of the
radius rod, presses the tubular portion back upon the solid part and thus releases the
brake from the wheel, the adjustable screwed rod H is attached to the solid radius rod

page_text: by a projecting piece H¹ and this rod is employed to regulate the distance of the
brake block from the face of the wheel K hanging bar and pulley K' working upon
a bearing at K fixed to the body of the van, the same being employed to hold the
cylindrical radius rod and brake block in position against the face of the wheel.
L nut and L' steel concave spring washer for holding the block upon the tubular
radius rod, and by means of this concave washer an independant motion is given
to the block (although tightened up by the nut to prevent its fouling the wheel) so
that the whole face of the block impinges against the wheel each time it is applied.
M excentric action pedal with chain fastened to same for applying brake and
Nweighted lever wedge which falling automatically when the pedal is applied
locks the same by reason of the aforesaid excentric action bearing of the pedal, but
upon being raised by the foot the pedal is at once released and the brake thrown off.
We would here note, that if desired the spirial spring instead of being placed inside
the cylindrical part of the rod may be fitted outside and fixed to the shoulders of the
two parts of the radius rod.
Having now particularly described and ascertained the nature of our said Inven-
tion and in what manner the same is to be performed we claim
First. Employing for brakes of vans and other vehicles a radius rod formed in two
parts, one portion made solid and fixed to the axle and jointed, the other portion
cylindrical and made to work upon the solid part. This cylindrical portion being
also bent at one end and formed with a shoulder to receive and keep the brake block
in position against the face of the wheel, also employing and fitting a spirial spring
between the solid and hollow portions of the radius rod to release and keep the block
off the wheel when not in use, substantially as set forth.
Secondly. Employing a concave spring washer in securing the brake block to the
radius rod to prevent the block from fouling the wheel and to give same an inde-
pendant motion for the purposes above set forth and described.
Thirdly. The lever and adjustable screwed rod, the lever being fulcrumed to the
tubular portion of the radius rod- with brake fitted thereto, and jointed to the
adjustable screwed rod attached to the projecting piece on the solid part of the radius
rod, the said lever being connected and actuated from the pedal by the ordinary
chain or otherwise, substantially as set forth.
Fourthly. The use and employment of the jointed hanging bar with pulley attached,
to hold the radius rod, the brake and chain in position.
Fifthly. The employment of the excentric action pedal and weighted lever wedge
for locking the brake upon the wheel substantially as and for the purposes herein set
forth and described.
Dated th:- 2011
LTL 1000
B. F. WEATHERDON & Co.,
11 & 12, Southampton Buidings, W.C., Agents for the Applicants.