IMPROVEMENTS IN STEELYARDS FOR WEIGHING MACHINES."
Year: 1881

page_text: LETTERS PATENT to Oliver Jones, of Salford, in the County of Lancaster,
for an Invention of "IMPROVEMENTS IN STEELYARDS FOR WEIGHING
MACHINES."
PROVISIONAL SPECIFICATION left by the said Oliver Jones at the Office
of the Commissioners of Patents on the 14th April 1881.
OLIVER JONES, of Salford, in the County of Lancaster.
STEELYARDS FOR WEIGHING MACHINES."
IMPROVEMENTS IN
My Invention relates to certain improvements in weighing machines, which are
intended to give indications in several distinct national standards or other
denominations of weight.
I employ an arrangement of parts forming a steelyard having its revolving bar
prolonged beyond the fulcrum knife edges in both directions, constituting it a
double arm beam, having its fulcrum almost midway between the two arms.
arm is furnished with a sliding weight.
Each
As one example, it is convenient to construct the steelyard body bow shaped,
having a fulcrum block raised midway in its length, the fulcrum block carrying
the knife edged centres, upon which the steelyard turns. The revolving index bar
passes through the fulcrum block aforesaid, and is mounted in suitable bearings
formed in the ends of the bow, which bearings may be adjustable. The revolving
index bar is provided with two sliding weights, one on each side of the fulcrum
block, namely, a suitable sliding weight on one arm to indicate the primary
weight, and another sliding weight to indicate the secondary weights or aliquot
parts of the primary weights on the other or opposite arm. The revolving index
bar may be locked in any desired position by a suitable pawl or catch or other
device. The revolving bar may be of any desired many sided section, or it may
be cylindrical. It is graduated or scaled on its sides for the sliding weight; or if

page_text: of polygon section its edges may be notched or divided for a hanging weight or
weights in substitution for the sliding weights.
In the carrying out of my Invention the prolonging of the steelyard through
the column or standard serves to assist in balancing the steelyard.
My 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. It is also applicable for various
denominations of weight, for example, with a triangular form of revolving index
bar three weights may be given, such as English, French, and Spanish in their
larger denominations on the long arm of the steelyard, and in their lesser denomi-
nations on the short or prolonged arm of the steelyard.

page_text: SPECIFICATION in pursuance, of the conditions of the Letters Patent filed by
the said Oliver Jones in the Great Seal Patent Office on the 13th October
1881.
.OLIVER JONES, of Salford, in the County of Lancaster. "IMPROVEMENTS IN
STEELYARDS FOR WEIGHING MACHINES."
My Invention relates to certain improvements in weighing machines, which are
intended. to give indications in several distinct national standards or other
denominations of weight.
I employ an arrangement of parts forming a steelyard having its revolving bar
prolonged beyond the fulcrum knife edges in both directions, constituting it a
double arm beam, having its fulcrum almost midway between the two arms. Each
arm is furnished with a sliding weight.
As one example, it is convenient to construct the steelyard body bow shaped,
having a fulcrum block raised midway in its length, the fulcrum block carrying
the knife edged centres upon which the steelyard turns. The revolving index bar
passes through the fulcrum block aforesaid, and is mounted in suitable bearings
formed in the ends of the bow, which bearings may be adjustable. The revolving
index bar is provided with two sliding weights, one on each side of the fulcrum
block, namely, a suitable sliding weight on one arm to indicate the primary
weight, and another sliding weight to indicate the secondary weights or aliquot
parts of the primary weights on the other or opposite arm. The revolving index.
bar may be locked in any desired position by a suitable pawl or catch or other
device. The revolving bar may be of any desired many sided section, or it may
be cylindrical. It is graduated or scaled on its sides for the sliding weight; or if.
of polygon section its edges may be notched or divided for a hanging weight or
weights in substitution for the sliding weights..
In the carrying out of my Invention the prolonging of the steelyard through the
column or standard serves to assist in balancing the steelyard.
My 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. It is also applicable for various
denominations of weight; for example, with a triangular form of revolving index
bar three weights may be given, such as English, French, and Spanish in their
larger denominations on the long arm of the steelyard, and in their lesser denomi-
nations on the short or prolonged arm of the steelyard.
The beforegoing being the nature, object, and purposes of my Invention, I will
now proceed to describe in detail how the same may be practically carried out;
and for that purpose I have hereunto attached two Sheets of Drawings, which
sufficiently illustrate my Invention to enable any person to carry the same into
practical effect. Like letters and Figures marked on the Drawings denote the
same or corresponding parts throughout the various views.
DESCRIPTION OF THE DRAWINGS.

page_text: Reference to Figures 1, 2, and 3 it will be seen that in this example I construct
the steelyard body A in the nature of a bow, having the fulcrum block B raised
about midway in its length. The fulcrum block B carries the knife edge centres.C,
upon which the steelyard turns. The revolving index bar E passes through the
fulcrum block B, and is mounted between the bearings F, F, formed in the ends
of the bow A, which bearings may be adjustable. The revolving index bar E is
provided with two sliding weights H, J, one on each side of the fulcrum block B,
namely, the sliding weight H to indicate the primary weights, and the sliding
weight J to indicate the secondary weights or aliquot parts of the primary weights
on the other or opposite arm. The revolving index bar E may be locked in any
desired position by any suitable pawl or catch or other device. The revolving
bar E may be of any desired many sided section, or it may be cylindrical; for
example, it is shown triangular at Figure 3. It graduated or scaled on its
sides for the sliding weights, or if of polygonal section its edges may be notched
or divided for a hanging weight or weights in substitution for the sliding
.weights H, J.
In the carrying out of my Invention the prolonging of the steelyard through
the column or standard K serves to assist in balancing the steelyard.
In the example shown at Figures 4, 5, and 6 the revolving index bar E is used
to alone form the steelyard, and I dispense with the bow A. The fulcrum block B
receives the steelyard, being the revolving index bar E in the manner shown.
It will be observed in both the examples shown in the Drawings that the index
bar E is bushed at L, where it passes through the fulcrum block B.
I am aware that prior to my Invention revolving index bars for steelyards have
been used both in single and duplicate form. I am also aware that weighing
machines have been made with a steelyard prolonged through the column, the
prolonged end of the steelyard or that portion which projects through the back
of the column or standard being used for taring goods, but my Invention differs
from those arrangements by my prolonging the revolving index bar conjointly
with the steelyard.
Having now described my Invention, and shown how the same may be put into
practical operation, what I claim as my Invention and secured to me by Letters
Patent as aforesaid is,-
First. The construction and use of a steelyard with a graduated revolving index
bar, such as E, prolonged beyond the fulcrum knife edges in both directions, as
herein described and for the purposes set forth.
Second. The employment of a revolving index bar or bars which is prolonged
beyond the fulcrum knife edges in both directions, so that the weights placed on
the different arms will indicate, as herein described and shown in the Drawings.
Third. The construction and arrangement of steelyard as herein described and
shown at Figures 1, 2, and 3 of the Drawings hereto annexed.
Fourth. The construction and arrangement of steelyard as herein described and
shown at Figures 4, 5, and 6 of the Drawings hereto annexed.
In witness whereof, I, the said Oliver Jones, have hereunto set my hand
and seal, this Eleventh day of October, in the year of our Lord One
thousand eight hundred and eighty one.