IMPROVEMENTS IN SCALES
Year: 1881

page_text: LETTERS PATENT to Herbert John Haddan, of the Firm of Herbert and
Company, Solicitors of Patents, of 67, Strand, in the City of Westminster,
Civil Engineer, for an Invention of "IMPROVEMENTS IN SCALES." A com-
munication from abroad by Louis Colassot, of Francheville, in the Republic
PROVISIONAL SPECIFICATION left by the said Herbert John Haddan at the
Office of the Commissioners of Patents on the 29th January 1881.
HERBERT JOHN HADDAN, of the Firm of Herbert and Company, Solicitors of
"IMPROVE-
Patents, of 67, Strand, in the City of Westminster, Civil Engineer.
MENTS IN SCALES." A communication from abroad by Louis Colassot, of
Francheville, in the Republic of France.
This Invention consists in providing the scale-beam with a heavy rod attached
near the centre of the beam, forming an angle of about 50 or 60° with the latter,
and hereinafter called the regulator. This regulator keeps the beam at an oblique
position. All parts without the regulator should be perfectly equilibrated, the
regulator rigid, and the centre of gravity should coincide with the axis of
suspension, so that the scale is in a state of indifferent equilibrium, the cups or
platforms remaining in any position that may be given to them.
The addition of the regulator alone causes the scale beam to move, and the cup
which has been raised by the regulator can only descend by being loaded. In
descending the cup raises the regulator and the opposite cup until the equilibrium
is established.
A pointer fixed to the scale beam follows the motion of the latter, and when the
equilibrium is established it indicates on a graduated segment the weight of the
object which has set the apparatus in motion. If the lowest position of the cup
corresponds to a weight smaller than that of the object to be weighed, it is
sufficient. to place a weight on the opposite scale and add this to that which is
indicated by the pointer.

page_text: =
SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Herbert John Haddan in the Great Seal Patent Office on the
26th July 1881.
HERBERT JOHN HADDAN, of the Firm of Herbert and Company, Solicitors of
Patents, of 67, Strand, in the City of Westminster, Civil Engineer. " IMPROVE-
MENTS IN SCALES." A communication from abroad by Louis Collassot, of
Francheville, in the Republic of France.
This Invention consists in providing the scale beam with a heavy rod attached
near the centre of the beam, forming an angle of about 50 to 60° with the latter,
and hereinafter called the regulator. This regulator keeps the beam at an oblique
position. All parts without the regulator should be perfectly equilibrated, the
regulator rigid, and the centre of gravity should coincide with the axis of
suspension, so that the scale is in a state of indifferent equilibrium, the cups or
platforms remaining in any position that may be given to them.
The addition of the regulator alone causes the scale beam to move, and the cup
which has been raised by the regulator can only descend by being loaded. In
descending the cup raises the regulator and the opposite cup until the equilibrium
is established. A pointer fixed to the scale beam follows the motion of the latter,
and when the equilibrium is established it indicates on a graduated segment the
weight of the object which has set the apparatus in motion. If the lowest position
of the cup corresponds to a weight smaller than that of the object to be weighed,
it is sufficient to place a weight on the opposite scale and add this to that which
is indicated by the pointer.
The accompanying Drawing will serve to illustrate the Invention and show how
the same may be readily performed.
In witness whereof, I, the said Herbert John Haddan, have hereunto set my
hand and seal, this Twenty sixth day of July, A:D. 1881.
TT