An Improvement in or relating to Platform, Trolly, and like Weighing Machines.
Year: 1897

page_text: Date of Application, 1st Nov., 1897
Complete Specification Left, 27th Nov., 1897-Accepted, 12th Feb., 1898
An Improvement in or relating to Platform, Trolly, and like
Weighing Machines.
I, WILLIAM ROBERT FAIRBURN, of the Firm Fairburn Brothers, 56, High
Street, Maidstone, County of Kent, Scale and Weighing Machine Manufacturers,
do hereby declare the nature of this invention to be as follows:-
This invention has for object, so lifting platform or scale plate also its bearings
and steelyard from the bed and locking them as a whole in the raised condition
as to be free from vibration and injury when not required for weighing purposes.
With ordinary trollies from which coal and other material or produce is sold
to dwellers in towns in small quantities, it is usual for the trollies to carry scales
and weights, and as a rule, the scales are pushed under the flooring of the vehicle
and the weights hung to hooks from the back wheel axle bar. Another plan has
been to employ a steelyard and scale plate in a frame supported on rails and
capable of being pushed under the flooring intact, it is with regard to the latter
system that my invention has special reference.
It has been found that steelyard scales, of that kind by remaining on their
bearings receive swinging and swaying oscillations when not in use while the
vehicle is travelling and are constantly being injured thereby and which my
invention is intended to remedy.
For the purpose, I fit a wide cranked bar across the inside of the frame directly
under the scale plate or platform, and by a hand lever connected thereto I turn
it up or down, the hand lever being locked in either position by a spring plate
with recesses fixed on the outside of the casing.
The broad crank bar is pivotted in the casing and is located in the spaces
under the scale plate or platform support as to be free when turned down but by
rollers to come into contact when raised, the distance so raised being sufficient to
lift the knife edges or trunnions clear of the sockets and the boss or other part
by a roller against a lip projecting from the inner end of the steelyard which
also is lifted and fixed temporarily against a cross bar of the frame, so that no
motion is communicated to the operable parts of the scale during the ordinary
travelling of the vehicle.
Although I have described the invention as specially applicable to coal trollies,
it is equally available for shops, railway stations, parcels offices, and other places
in which goods or material have to be weighed.
of Na-mber 1907
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said William Robert Fairburn.

page_text: An Improvement in or relating to Platform, Trolly, and like
Weighing Machines.
I, WILLIAM ROBERT FAIRBURN, of the Firm Fairburn Brothers, 56, High
Street, Maidstone, County of Kent, Scale and Weighing Machine Manufacturers,
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 has for object, so lifting platform or scale plate also its bearings
and steelyard from the bed and locking them as a whole in the raised condition
as to be free.from vibration and injury when not required for weighing purposes.
With ordinary trollies from which coal and other material or produce is sold
to dwellers in towns in small quantities, it is usual for the trollies to carry scales
and weights and as a rule the scales are pushed under the flooring of the vehicle
and the weights hung to hooks from the back wheel axle bar.
Another plan has been to employ a steelyard and scale plate in a frame supported
on rails and capable of being pushed under the flooring intact, it is with regard to
the latter system that my invention has special reference.
It has been found that steelyard scales, of that kind by remaining on their
bearings receive swinging and swaying oscillations when not in use while the
vehicle is travelling and are constantly being injured thereby and which my
invention is intended to remedy.
For the purpose, and as I show in side elevation partly in section Figure 1
and plan Figure 2 with the scale plate removed, I fit a wide cranked bar A across
the inside of the casing or frame B directly under the scale plate or platform C,
and by a hand lever D connected thereto I turn it i.e. the bar A up or down, the
hand lever I being locked in lower position by a spring plate E with recesses
and fixed on the outside of the casing B.
The broad crank bar A is pivotted in the casing B and is located in the spaces
under the scale, plate or platform support G as to be free when turned for
rollers H, H, on said bar A to come into contact when raised, the distance so
raised being sufficient to lift the scale supporting trunnions I, I, clear of the knife
edges J, J, the centre part of the bar A by a roller K bearing against a lip L
projecting from the inner end of the steelyard M which also becomes lifted and
pressed against a stud pin N under said lip the steelyard being then forced against
a cross bar or plate P of the frame or casing, so that no motion is communicated
to the operable parts of the scale during the ordinary travelling of the vehicle by
which the weighing machine is carried.
The lifting of the steelyard lip L also clears its knife edges R, R, from their
sockets or bearings and by the roller K pressing against the stud N just before the
completion of its lift, it is pushed along until the end of the threaded rod Q bears
against the plate P whereby by the lift of the steelyard M and the bite of the
rod Q-they become.rigidly fixed.
S is the main weighing weight and T that of the basket or sack. The movable
weight W adjusts the balance.
The other parts of the trolly scale are old and well known and require no
description.
Although I have described the invention as specially applicable to coal trollies,
it is equally available for shops, railway stations, parcels offices, and other places
in which goods or material have to be weighed.
i

page_text: Having now particularly described and ascertained the nature of this
invention and in what manner the same is to be performed I declare that what
I claim is:-
1. As my improvement in or relating to platform, trolly, and like weighing
machines, the means or appliances as hereinsetforth by which the scaleplate and
its attachments also the steelyard can be separately yet conjointly lifted clear of
their supports and be rigidly held by a lever capable of being temporarily locked
and the steelyard also by the additional movement given to it by the lifting
apparatus, all as described and substantially as shown on the annexed drawings.
2. As an appliance for lifting the scale plate and its bearings and the steelyard
of a weighing machine of the kind described by a separate yet combined motion
and for locking the same, a broad cranked cross bar A operable by an outside
lever D capable of being itself locked substantially in the manner shown and
specified.
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said W. R. Fairburn.