Improvements in and relating to Weighing Machines.
Year: 1892

page_text: Date of Application, 18th Aug., 1892
Complete Specification Left, 17th June, 1893-Accepted, 22nd July. 1893
PROVISIONAL SPECIFICATION.
Improvements in and relating to Weighing Machines.
I, JAMES HINES, Engineer, of Messrs. Henry Pooley and Son, Albion Works,
69 McAlpine Street, Glasgow, Lanarkshire, Weighing Machine Makers, do
hereby declare the nature of my invention to be as follows:-
This invention has reference to and comprises improvements in and relating to
weighing machines, and especially those of the platform class used for weighing
cattle and carts.
The improvements consist first in constructing and fitting the knife edges of the
main, index, and other levers of weighing machines, so that they can be portably
and easily fitted, in a finished tempered state and unshipped or detached for
replacement or repair in a very short space of time and dispense with the fitting
manipulation and adjustment heretofore required. This is effected by forming the
knife edges with projecting flanges and holes for being portably bolted and secured
in a finished state to the face flanges of snugs or eyes cast or formed on the levers
of the machine. The end fulcrum knife edge centres of the main levers would
preferably be made fixed centres, and the knife edges would be bolted' by the
flanges to the snugs cast on the levers, a grooved bed being preferably formed in
the levers at the parts where these are bolted to each other. While the inter-
mediate load knife edge centres would be made movable, so as to be easily adjusted
towards or from the fixed centres and differentiate the length of the levers to any
nicety desired. The weighbridge platform would be carried on bars as usual
supported by lower cross-heads which are bolted to upper crossheads. These
upper crossheads are formed with recessed parts which rest on the adjustable knife
edge centres bolted to snugs formed on the levers, the bed of these on the lever
being flat at the connecting parts. Each of these knife edge load centres of the
levers is adjusted to any nicety desired by a portable tool consisting of a fork
armed grab plate which embraces the end flanges of the knife edges and is
attached by a screwed eye and screw spindle to a block which is fixed by a groove
in a tooth or projection formed on the lever. When the screw spindle is turned
the forked grab is moved to adjust the knife edges to the position desired, and
these are then tightened up by the bolts to the flanges of the snugs cast on the
lever. The tool can then be portably detached and removed.
For weighing cattle and carts the weighing platform is formed with wide angled
or conoidal recesses or sockets to receive the lower end standards of the cage.
These standards are formed of channel or U shaped iron, and their lower end
part which fits within the holes in the platform is angled or bent, so as to allow for
adjustment in the sockets. The sides of the cage are formed of a series of
parallel boards or bars of wood or metal fitting by their pointed ends into the
channel standards and braced or stayed together by vertical transverse strips
screwed to them, and having the ends of these strips fitting into sockets or recesses
in the weighing platform. The sides of the cage are secured or stayed together
transversely at top, by a chain or chains or wire ropes, the chains being fixed at
the one end and secured. at the other to the cage frame by an adjustable cam,
screw, lever; or equivalent device for attaching. and tightening up same, and
locking the cage on the platform. Cattle which would' enter at one of the ends of
the cage, would thus get weighed and pass out through the other end; but by
detaching the catch lever and liberating the chain the two ends of the cage will

page_text: fall away from the end standards, and the two sides can be removed, to permit
carts to pass on to the platform and get weighed.
Dated the 17th August 1892.
W. R. M. THOMSON & Co.,
96, Buchanan Street, Glasgow, Agents.
COMPLETE SPECIFICATION..
· Improvements in and relating to Weighing Machines.
I, JAMES HINES, Engineer, of Messrs. Henry Pooley and Son, Albion Works,
69 McAlpine Street, Glasgow, Lanarkshire, Weighing Machine Makers, do
hereby declare the nature of my invention, and in what manner the same is to
be performed to be particularly described and ascertained in and by the following
statement in writing, that is to say :-
This invention has reference to and comprises improvements in and relating to
weighing machines, and especially those of the platform class used for weighing
cattle and carts.
And in order that my said invention and the manner of performing or carrying
the same into effect or practice may be properly understood I have hereunto
appended an explanatory sheet of drawings in which the same reference letters
are used to indicate corresponding parts in all the figures where shown. Figures 1
and 2 are sectional side and end elevations respectively of the load centre end of
one of the main levers and its fittings of a weighing machine as constructed and
arranged in accordance with my improvements. Figure 3 shows a detached
elevation, end view, and plan respectively of one of the adjustable knife edge
centres. And Figures 4 and 5 represent a side elevation and plan view respectively,
showing a tool for adjusting the knife edge load centres of the levers. Figures 6, 7,
and 8 represent a side and end elevation and plan view respectively of a cattle
weighing platform as constructed and arranged in accordance with my improve-
.ments.
Referring to these drawings:-The improvements consist, first, in constructing
and fitting the knife edges of the main index, and other levers of weighing
machines, so that they can be portably and easily fitted, in a finished tempered
state and unshipped or detached for replacement or repair in a very short space of
time and dispense with the fitting, manipulation and adjustment heretofore required.
This is effected as shown in Figures 1 to 3 by forming the knife edges a a¹ with
projecting flanges a² and holes for being portably secured by screw bolts and
nuts a¹¹ in a finished state to the face flanges of snugs or eyes b cast or formed on
the fulcrum parts of the levers B, of the machine. The end fulcrum knife edge
centres a of the main levers B, are preferably made fixed centres, and the knife
edges are bolted by the flanges a² to the snugs b, cast on the levers B, a grooved
bed b', being preferably formed in the levers at the parts where these are bolted to
each other. While the intermediate load knife edge centres a¹ are made movable
by their bolts a being moved in the elongated holes in the flanges b, so as to be
easily adjusted towards or from the fixed centres a and differentiate the length of
the levers to any nicety desired. The weighbridge platform would be carried on
bars C supported in crossheads D which are secured to upper crossheads D' by
long bolts d, passed through holes d' in the levers B. These upper crossheads D'
are formed with recessed steel bearing parts d², which rest on the adjustable knife
edge centres a¹ bolted to the snugs 6 formed on the levers B, the bed 6' of these on
the lever being flat and planed at the connecting parts. Each of these knife edge
load centres a of the levers is adjusted to any nicety desired by a portable tool,
shown in Figures 4 and 5 consisting of a fork armed grab plate E with checked
parts e at its lower extreme ends which embraces the end flanges a, of the knife
edges a and is attached by a screwed eye E' and screw spindle E' to a block E',
which is fixed by a groove e¹ in a tooth or projection B', formed on the lever B.
"

page_text: When the screw spindle E' is turned the forked grab E is moved to adjust the
knife edges a¹ to the position desired, and these are then tightened up by their
bolts all to the flanges 61 of the snugs b cast on the lever B. The tool can then be
detached and removed.
For weighing cattle and carts the weighing platform A, as shown in Figures 6
to 8, is formed with wide angled or conoidal recesses or sockets at A¹ to receive the
lower ends A" of the end standards A' of the cage. These standards A' are
formed in cross section of channel or U shaped metal and preferably of a bow
shape at top, and their lower end part A" which fits within the holes A¹ in the
platform A is angled or bent, so as to allow for adjustment in the sockets A'. The
sides of the cage are formed of a series of parallel boards or bars A³ of wood or
metal fitted by their ends into the channel standards A³, and braced or stayed
together by vertical transverse metal strips A screwed to them, and having the
lower ends of these strips fitting into sockets or recesses at A' in the weighing
platform A. The sides of the cage are secured or stayed together transversely at
top by a chain or chains A' or wire ropes, the chains being fixed to the one end
frame A' and secured at the other end to the other cage frame A', by an adjustable
screw, cam, lever, or equivalent device at A for attaching and tightening up the
chain A, and locking the cage on the platform A. Cattle which would enter at
one of the ends of the cage, would thus get weighed and pass out through the
other end; but by unscrewing or detaching the catch or lever A, and liberating
the chain A', the two end frames A' of the cage will fall away, and the two sides A³
can be removed to permit carts to pass on transversely to the platform A and get
weighed.
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 :-
First. In weighing machines the forming of the knife edges of the load centres
of the main index and other levers, with projecting flanges and holes for being
adjusted and portably bolted in a finished state to face flanges on snugs or eyes cast
or formed on the levers of the machine, substantially as and in the manuer set
forth.
Second. In weighing machines the construction of a forked arm grab tool for
adjusting the knife edge load centres of the levers, substantially as described in
reference to and shown in Figures 4 and 5 of the accompanying drawings.
Third. The construction of the platforms of cattle weighing machines with
portable standards formed in cross section of channel or U shaped metal for
securing the side frames and made adjustable at their lower ends, the sides of the
cage being stayed by chains or ropes and a tightening up and securing device,
substantially as described in reference to Figures 6 to 8 of the accompanying
drawings.
Dated the 16th June 1893.
W. R. M. THOMSON & Co.,
96, Buchanan Street, Glasgow, Agents.