Improvements in Weighing Machines, Especially Adapted for Weighing Railway Trucks, Road Waggons, Carts, and Wheel- barrows.
Year: 1886

page_text: Date of Application, 24th Mar., 1886.
Complete Left, 24th Dec., 1886.
Complete Accepted, 25th Mar., 1887.
Improvements in Weighing Machines, Especially Adapted for
Weighing Railway Trucks, Road Waggons, Carts, and Wheel-
barrows.
ROWLAND WILLIAM BROWNHILL Mechanical Engineer, Rifle Hill 44 High Street,
Aston New Town near Birmingham County of Warwick do hereby declare the nature
of this invention to be as follows:-
:-
My invention consists of improvements herein-after explained, I arrange the whole
of the machine to stand above the ground line, so that the machine can
be laid upon
the ground, floor, or railway sleepers, without the necessity of constructing an under-
ground chamber, for the purpose of containing the girders and levers, I effect this by
the use of two end base plates, with passages cast through them, through which I work
horizontal rods to connect the two sides of the machine for weighing and releiving, I
then fix a box girder on each side of the machine, and bolted to the end base plates,
these box girders are for the purpose of containing the main weighing levers, to which
are suspended the platforms, at the end of the main weighing levers are cast vertical
levers at right angles with the main levers centres, and connected by horizontal rods,
through the end base plates, the weight of these rods are suspended by a light rod to
the main weighing levers, in the centre of one of the box girders, is cast the lever box
for supporting the index column, the platforms are suspended by links to the centres
in the main levers, fixed within the box girders, leaving it free all under between the
platforms and the ground floor, for large machines the platforms are cast in strong
frames with snugs cast on for the suspension links, and the centre of the platforms cast
to receive a lighter plate, which is also useful to remove to clean under the platforms,
for long machines I use more than one platform each suspended by four links from the
main levers, the main centres are first fitted to a block, and then fitted to the main
levers, on the Index column I fix an index finger, worked by compound levers, to
show the oscilation of the machine clearly, my method of releiving is by horizontal
shafts fixed within the box girders, upon which shafts are short levers which
connect to the suspension links, these shafts are connected by vertical levers fixed upon
the shafts at right angles with the short levers which connect to the suspension links,

page_text: The vertical levers are connected by rods running through the end base plates, and so
onnecting both sides of machine, these shafts are actuated by levers fixed upon the
Shafts and running along side of the lever box to the index column, the index lever is
made hollow for the purpose of ballancing adjusting and providing for the index finger,
the index lover is double ended, to weight the small weights on the right hand, and the
heavy weights on the left hand, when the machine is required to be self indicating,
registering, and recording, I use the improved weighing apparatus, patented by me
August 1st 1873, and numbered 2605, but I now introduce an improvement con-
sisting of a falling weight and revolving fly, to prevent the vibrations of the springs
acting upon the apparatus.
Dated this twenty third day of March 1886.
ROWLAND WILLIAM BROWNHILL.
Alfred Johnson, J.P.,
County of Warwick.
COMPLETE SPECIFICATION.
Improvements in Weighing Machines, Especially Adapted for
Weighing Railway Trucks, Road Waggons, Carts, and Wheel-
barrows.
ROWLAND WILLIAM BROWNHILL, 44 High Street, Aston New Town, near
Birmingham, Mechanical 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:-
My invention consists of improvements herein after explained. I arrange the whole
of the machine to stand above the ground line, so that the machine can be laid upon
the ground floor, or railway sleepers without the necessity of constructing an under-
ground chamber to contain the girders and levers. I effect this by the use of two end
base plates, with passages cast through them, through which I work horizontal rods to
connect the two sides of the machine for weighing and releiving. I then fix a box
girder on each side of the centre of the machine bolted to the end base plates; these
box girders are for the purpose of containing the main weighing levers, to which are
suspended the platforms, at the end of the main weighing levers, at right angles with
the main levers centres and connected by horizontal rods through the end base
plates, the weight of these rods is suspended by a light rod to the main weighing levers,
In the centre of one of the base girders is cast the lever box supporting the index
column, the platforms are suspended by links to the centres in the main levers, fixed
within the box girders leaving it free all under between the platform and the ground

page_text: The platform G is suspended freely by the links H to the main levers weight centres,.
fitted in the main lever the main levers are supported at the fulcrum centre by the
girder boxes; at the end of the main levers is cast a virtical lever D and from these
levers the two sides of the machine are connected by the horizontal rods J, the main
levers upon the side next the index column have the transfer levers cast upon them to
communicate to the index lever; the index finger is worked upon a stud fixed at the
bottom inside the index column, and is balanced to keep it upright by a weight on the
bottom end of the finger at O, the top end of the finger being shown at N, this finger
is actuated by a lever fixed to the index lever U and working close to the index finger
on a stud at the bottom fitted in the index finger. The relieving apparatus commences
with lifting the long handles Teach side of the index column, which are fixed upon
the shafts inside the girder boxes, upon these shafts in conjunction with each main
centre, are short levers, marked R, which lifts the levers Y supported at the other end
by the box girder B and so raises the suspension links H off the centres 7; the shafts Q
in the girder boxes have vertical levers which connect both sides of the machine by
the horizontal rods K. The action of the falling weight and revolving fly may be seen
by reference to Figures 6 and 7, the rod No. 1 carrying with it the platform, No. 2

page_text: elongates the springs 9 and crosshead, according to the weight applied; then the
falling weight V falls carrying with it the balance weight X and the pulleys marked 3
and 5 on the spindle 4, upon which the fly marked W is fixed and retards the falling
weight.
Having thus given a general description of my weighing machine 1 desire that the
drawings shall be taken as an illustration of my invention and to be understood that
I do not purpose limiting myself to the size, shape or dimensions of all or any of the
parts forming my machine, or the exact details described, as the same may be modified
without departing from the character and object of my invention; as for instance the
end base plates and girders may be made in one casting, and the platform may have
ribs. cast along forming one side of the girder boxes, or the platform may be cast in a
shape to cover for the girder boxes and end plates.
Having now particularly described and ascertained the nature of my said invention
and in what manner the same is to be performed, I declare that what I claim is :-
1st. The arrangement of the main weighing levers along each side of the centres of
the platform, the fulerum and weight centres of which are fixed at points higher or
near the surface of the platform. The platforms being suspended to the main levers
by any number of centres along each side required by the length of the platform, the
object being to obviate the use of a pit altogether.
2nd. The use of a falling weight and revolving fly in conjunction with the indicator
of a weighing machine, the object being to detach the indicating part from the weighing
part of the machine for a short time during the operation of weighing, to prevent
vibrations, and greatly reduce the friction.
3rd. The general combination of parts involved in the construction of my machine
for the object and purpose herein fully described or any mere modification thereof as
described.
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