IMPROVEMENTS IN THE STEELYARDS OF WEIGHING MACHINES
Year: 1876

page_text: LETTERS PATENT to Henry Pooley, the younger, and James Wood, of the
Firm of Henry Pooley and Son, of Liverpool, in the County of Lancaster,
Engineers and Ironfounders, for the Invention of "IMPROVEMENTS IN THE
STEELYARDS OF WEIGHING MACHINES."
Sealed the 4th July 1876, and dated the 8th January 1876.
PROVISIONAL SPECIFICATION left by the said Henry Pooley and James
Wood at the Office of the Commissioners of Patents, on the 8th January
1876.
HENRY POOLEY, the younger, and JAMES WOOD, of the Firm of Henry Pooley
and Son, of Liverpool, in the County of Lancaster, Engineers and Ironfounders.
"IMPROVEMENTS IN THE STEELYARDS OF WEIGHING MACHINES."
Our Invention relates to a novel construction of steelyard, which may be
graduated so as to exhibit several distinct national standards, and used in such
manner that by means of one poise or sliding weight several indications of weight
can be made either simultaneously or successively, and consists in forming the steel-
yard or graduated index bar in such manner that it can be turned, or will revolve,
or we surround the steelyard with a revolving graduated index bar. The steelyard
or index bar may be formed of rectangular section having two graduated edges,
or of triangular section having three graduated edges, or of square section with
four graduated edges, or of any other many sided section, having five or more
graduated edges, or the bar may be cylindrical, having its various graduations and
divisions marked upon the circumference thereof.
The revolving steelyard or bar may be fixed by a lock, or jam nut, by a pin
or key, springs and catch, or by any other suitable means, so as to retain the
graduated edge in the desired position, vertical or otherwise, as may be wished.
The poise, or balance, or sliding weight, which in weighing is moved along the
edge of the steelyard may be suspended therefrom by a ring or other suitable
contrivance, so arranged as to take into the notches on the upper edge, or it may
be made to slide along the bar to suit convenience.
Our Invention may be modified as follows:-The steelyard may be formed as
an open frame, in which we insert the graduated index bar, as before described, in
such position as to be axially parallel with the plane of the knife edges.. The

page_text: index bar carries the sliding weight and is capable of being fixed in any required
position.
The respective edges of the revolving steelyard are notched and graduated for
different weights, and such sectional form is adopted as will provide a distinct
edge for each separate denomination of weight, for example, the triangular form
may be used for three weights, such as English, French, and Spanish, and by
turning the steelyard or index bar the scale of graduation intended to be used may
be placed uppermost and thus read with facility.
Our Invention is applicable to all compound lever or other weighing machines,
in which the ordinary graduated index bar or steelyard is used, or it may be used
as a simple Roman steelyard or other balance.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Henry Pooley and James Wood in the Great Seal Patent Office, on
the 4th July 1876.
HENRY POOLEY, the younger, and JAMES WOOD, of the Firm of Henry Pooley
and Son, of Liverpool, in the County of Lancaster, Engineers and Ironfounders.
"IMPROVEMENTS IN THE STEELYARDS OF WEIGHING MACHINES."
Our Invention relates to a novel construction of steelyard, which may be
graduated so as to exhibit several distinct national standards, and used in such
manner that by means of one poise or sliding weight several indications of weight
can be made either simultaneously or successively, and consists in forming the
steelyard or graduated index bar in such manner that it can be turned, or will
revolve, or we surround the steelyard with a revolving graduated index bar.
The steelyard or index bar may be formed of rectangular section having two
graduated edges, or of triangular section having three graduated edges, or of square
section with four graduated edges, or of any other many sided section, having five
or more graduated edges, or the bar may be cylindrical, having its various
graduations and divisions marked upon the circumference thereof.
'
The revolving steelyard or bar may be fixed by a lock or jam nut, by a pin or
key, springs and catch, or by any other suitable means, so as to retain the
graduated edge in the desired position, vertical or otherwise, as may be wished.
The poise
or balance or sliding weight, which in weighing is moved along the
edge of the steelyard may be suspended therefrom by a ring or other suitable
contrivance, so arranged as to take into the notches on the upper edge or it may
be made to slide along the bar to suit convenience.
Our Invention may be modified as follows:-The steelyard may be formed as
an open frame in which we insert the graduated index bar, as before described;
in such position as to be axially parallel with the plane of the knife edges. The
index bar carries the sliding weight and is capable of being fixed in any required
position.
The respective edges of the revolving steelyard are notched and graduated for
different weights, and such sectional form is adopted as will provide a distinct edge
for each separate denomination of weight, for example, the triangular form may be
used for three weights, such as English, French, and Spanish, and by turning the
steelyard or index bar the scale of graduation intended to be used may be placed
uppermost and thus read with facility.
Our Invention is applicable to all compound lever or other weighing machines
in which the ordinary graduated index bar or steelyard is used, or it may be used
as a simple Roman steelyard or other balance.
The nature, object, and purposes of this our Invention having been set forth as
above, we will now proceed to describe in detail how the same may be practically
carried out, and for that purpose we have hereunto attached a Sheet of Drawings,
which sufficiently illustrates our Invention to enable any person to carry the same
i

page_text: into practical effect. Like letters and figures marked on the Drawings denote
similar parts throughout the various views.
Figure 1 is a sectional side elevation of our Invention; Figure 2 is a plan of
Figure 1; Figure 3 is a section through A, B, Figure 1; Figure 4 is a section
through C, D, Figure 2; Figure 5 is an end view of Figure 1.
Figures 6, 7, and 8, illustrate modifications of our Invention; Figure 9 is a
section through A, B, Figure 8; Figure 10 is a section through E, F, Figure 8.
On reference to the Drawings it will be seen that a is a steelyard or graduated
index bar, and we so form the graduated index bar that it can be turned or
revolved, and thus exhibit several distinct standards of graduation. This we
accomplish by forming the index bar of triangular section, as shown in the
Drawing, and allowing same to revolve on the bar or rod b. The index bar a is
held in position by the spring c which actuates the collar and pin d.
By constructing the steelyard as described we obtain on the same arm the
variously graduated edges represented by the angles A, B, C, of the revolving bar.
The example shown in the Drawing being of triangular form may be used for three
weights, such as English, French, and Spanish, and by turning the steelyard or
index bar the scale of graduation A, B, or C, intended to be used may be placed
uppermost.
Our Invention may be modified by varying the section of the steelyard a. It
may be of square section, or other many sided or cylindrical section.
Our Invention may be also modified by forming the index bar a as an open
frame revolving round the bar b, as shown at Figure 6, or by placing the revolving
graduated index bar a on suitable centres within an open frame a¹, as shown at
Figure 8, and in such position as to be axially parallel with the plane of the knife
edges. The index bar a carries the sliding weight and is capable of being fixed in
any required position.
Having now described and ascertained the nature and construction of our
Invention, and shown how the same may be carried out into practical effect, we
would have it understood, that we do not confine ourselves to the precise dimensions
and details of the steelyard, as shown in the Drawings; but what we claim as our
Invention and secured to us by Letters Patent as aforesaid is, the construction
and use of a steelyard with a graduated revolving index bar such as a, such
revolving index bar being of rectangular section, triangular section, square section,
or of any other many sided or cylindrical section, and graduated so as to exhibit
several distinct national or other standards, substantially as described and shown
and for the purposes specified.
In witness whereof, we, the said Henry Pooley, the younger, and James
Wood, have hereunto set our hands and seals, this first day of July, in the
year of our Lord One thousand eight hundred and seventy-six.