Improvements in Weighing Machines.
Year: 1896

page_text: PROVISIONAL SPECIFICATION.
Improvements in Weighing Machines.
I, HENRY POOLEY, Junior, of Albion Foundry, Kidsgrove, in the County of
Stafford, Engineer, do hereby declare the nature of this Invention to be as
follows:-
This invention has reference to weighing machines in which the weighing action
is automatically effected through a steelyard, arm, or lever, and a weight or weighing
device connected with said steelyard, arm, or lever, which increases, or the effective
weight of which increases, as the said steelyard or arm moves from its zero position
to others; and so that in the weighing of an article or thing, more and more of
the weight is automatically taken up by or added to the said steelyard or lever as it
rises or moves from the normal position of rest-say zero, until the weight on the
machine and this weight and the steelyard or lever are in equipoise. In this type
of machine, the kind of automatically increasing or weight taking up device most
commonly employed is an adjustably weighted vessel working in liquid contained
in an outer vessel, the level of which is retained at a certain position to effect the
correct action and adjustment of the machine.
According to this invention, in connection with the weight indicating parts of a
machine of this kind, there are two scales, one of which is part of a circle having
its centre or knife edges of the steelyard or weighing arm and being the scale of
the major order of weights, saw cwts.; whilst the other consists of a series of scales
running from the divisions of this major scale radially, for indicating the aliquot
parts of the cwts., namely, quarters and divisions of quarters. The first, i.e.,
the major order scale, is employed in connection with a pointer or the like; whilst the
other scales are employed in connection with a divided bar or scale constituting the
minor weight indicator, the indicating edge of which is adapted to intercept, or be
intercepted by, the minor scales connected with the major weight scale at different
points along their length, as the moving scale or scales move round in the weighing
action, and in such a manner, that firstly, the first division of the minor weight
scales intercepts the first division of the other scale, then the next division intercepts
the next division on the other scale, and so on throughout the whole of the minor
weight scales in connection with each of the divisions of the major weight scales.
According to one arrangement under this invention, a moving pointer and minor
weight scale are provided upon the end of a continuation of the steelyard, lever, or
arm carrying the automatic weight or weight device; that is, a continuation of this
lever or arm at its end, constitutes the major weight pointer, and a distance along it
towards the end where it is divided into a scale, constitutes the minor weight
indicator, working in conjunction with the series of minor weight scale referred to.
The fixed scales, in this case, will be a set of divisions constituting the major weight
scale, being a circumferential arrangement and forming a part of a circle struck at
the radius of the knife edges supporting the steelyard; and over which, the pointer
on the tip of the steelyard moves. Then from each of the divisions of the scale,
radially, runs a minor weight scale, in such a manner, that, when in action, the
divisions of the moving minor weight scale on the moving arm, intersect or comes

page_text: opposite the divisions of the fixed minor weight scales connected with the major
division seriatim.
The action will be, that when equipoise is established, the major weight scale
pointer will stand between, say, two of the major weight scale divisions, and
indicate the major weight, and the indicator or reading edge of the moving minor
weight scale bar, will stand somewhere over that of the minor weight scales which
are connected with the major weight indicated by the pointer, and the point at
which this moving weight scale crosses or stands over the fixed minor weight scale
will be the point to be read, and will indicate the minor weight unit of the thing
being weighed.
As a modification of the above, these scales may be disposed above the knife edges
instead of at the side of them as described, or in any other suitable position in rela-
tion thereto; or, the converse arrangement and employment of the scales described
may be adopted.
Dated this 21st day of June 1897
CHEESBROUGH & ROYSTON,
Applicant's Patent Agents, 15, Water Street, Liverpool.
I, HENRY POOLEY, Junior, of Albion Foundry, Kidsgrove, in the County of
Stafford, 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:-
This invention has reference to weighing machines in which the weighing action
is automatically effected through a steelyard, arm, or lever, and a weight or weighing
device connected with said steelyard, arm, or lever, which increases, or the effective
weight of which increases, and the said steelyard or arm moves from its zero position
to others; and so that in the weighing of an article or thing, more and more of
the weight is automatically taken up by or added to the said steelyard or lever as it
rises or moves from the normal position of rest-say zero, until the weight on the
machine and this weight and the steelyard or lever are in equipoise. In this type
of machine, the kind of automatically increasing or weight taking up device most
commonly employed is an adjustable weighted vessel working in liquid contained
in an outer vessel, the level of which is retained at a certain position to effect the
correct action and adjustment of the machine.
According to this invention, in connection with the weight indicating parts of a
machine of this kind, there are two scales, one of which is part of a circle having
for its centre the knife edges of the steelyard or weighing arm, and being the scale of
the major order of weights, saw cwts.; whilst the other consists of a series of scales
running from the divisions of this major scale radially, for indicating the aliquot
parts of the cwts., namely, quarters and divisions of quarters. The first, i.e.,
the major order scale, is employed in connection with a pointer, or the like; whilst the
other scales are employed in connection with a divided bar or scale, constituting the
minor weight indicator, the indicating edge of which is adapted to intersect, or be
intersected by, the minor scales connected with the major weight scale at different
points along their length, as the moving scale or scales move round in the weighing
action, and in such a manner, that firstly, the first division of the minor weight
scales intersects the first division of the other scale, then the next division intersects
the next division on the other scale, and so on throughout the whole of the minor
weight scales in connection with each of the divisions of the major weight scales.

page_text: According to one arrangement under this invention, a moving pointer and minor
weight scale are provided upon the end of a continuation of the steelyard, lever, or
arm carrying the automatic weight or weight device; that is, a continuation of this
lever or arm at its end, constitutes the major weight pointer, and a distance along it
towards the end where it may be divided into a scale, constitutes the minor weight
indicator, working in conjunction with the series of minor weight scale referred to.
The fixed scales, in this case, will be a set of divisions constituting the major weight
scales, being a circumferential arrangement, and forming a part of a circle struck at
the radius of the knife edges supporting the steelyard; and over which, the pointer
on the tip of the steelyard moves. Then from each of the divisions of the scale,
radially, runs a minor weight scale, in such a manner, that, when in action, the
divisions of the moving minor weight scale on the moving arm, intersect or come
opposite the divisions of the fixed minor weight scales connected with the major
division seriatim.
The action will be, that when equipoise is established, the major weight scale
pointer will stand between, say, two of the major weight scale divisions, and
indicate the major weight, and the indicator or reading edge of the moving minor
weight scale bar, will stand somewhere over that of the minor weight scales which
are connected with the major weight indicated by the pointer, and the point at
which this moving weight scale crosses or stands over the fixed minor weight scale
will be the point to be read, and will indicate the minor weight unit of the thing
being weighed.
As a modification of the above, these scales may be disposed above the knife edges
instead of at the side of them as described, or in any other suitable position in rela-
tion thereto; or, the converse arrangement and employment of the scales described
may be adopted.
In the drawing annexed hereto, which shews the invention applied to a weighing
machine of the kind referred to, the arrangement more particularly specified above,
is illustrated; that is to say, the steelyard supporting the weight is continued at
its end, and constitutes a pointer or indicator, while the weight scales are stationary
and arranged at the side of the machine, over which the pointer moves.
Referring to the drawings, a is the steelyard proper, and 6 the pointer or indicator
upon the end of it.
c is the knife edge and bearing, on which the steelyard is
supported; and d is the knife edge by which the weight of the goods being weighed
will be transmitted to it. e is the weight working in a liquid, of the character above
referred to, f being the vessel containing the liquid. e' is the knife edge and
suspension bearing of the weight e upon the steelyard a. h generally designates
the stationary weight scale plate, having upon it the scales both for the major and
minor orders of weight.
The scale i is for the major order of weights, and it is marked off or divided along
the inner edge of the scale plate A forming a part of a circle, having as its centre the
steelyard centre c. The scale is provided with numerals representing the major
scale weights, say cwts.; and the weight of the goods in the major order is indicated
by the upper edge of the pointer b, which moves over the scale. In the indicating,
unless the edge of the pointer is coincident with a division of the scale, (in which
case, of course, the exact weight of the goods will be indicated by the major order),
the true weight will be between the two figures on the scale, which the upper edge of
the pointer lies between; so far, therefore, the major weight of the goods is fixed.
For the minor weight, or aliquot parts, the scale between or beyond the major
scale is provided; and this is produced by the radial lines or divisions k, and by the
circular lines or divisions 1. The radial lines extend from the divisions of the
scale i to points on the opposite side of the scale plate h, which points are each in a
radial line with the next higher division of the major weight i, and which higher
divisions are marked on this outside major weight scale ; and they are intersected
by the circular divisions l, which are of uniform pitch, and struck from a centre,
which is the centre of the pointer used in connection with it. These points of
interception of the lines k and l, will be the weighing points, in connection with

page_text: which the upper edge of the pointer b will be used, and will represent the division or
aliquot parts between the successive major divisions of weights. For instance, in
the case shewn, the major order are cwts., and the minor divisions are in multiples
of 14 lbs., or 1 stone, and the direction of increase is in the direction of rise, which
is from the inner major order scale i, to the outer scale ; and
the terminal of each radial division line k on the scale i¹, is a major order division;
which is in a direct radial line with a corresponding division on the inner scale i,
from which the lines & spring. That is to say, when the pointer tip bis coincident
with a division of the outer major scale i, its weighing edge is also coincident with
a division of the inner scale i; and in moving upwards from one major order to the
other, it will coincide successively, and intersect the successive points of intersection
of the circular lines l, and a radial line k.
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. A weighing machine, comprising a steelyard having connected with it, a
weight of the kind herein referred to, and a weight indicating means substantially
as set forth.
2. A weighing machine comprising the steelyard a, with the moving indicator or
pointer b thercon, and a weight e, and a stationary scale; as herein set forth with
reference to and shewn in the drawings.
Dated thin 22nd dow of Marah 1000
CHEESBROUGH & ROYSTON,
Applicant's Patent Agents, 15, Water Street, Liverpool.