IMPROVEMENTS IN SCALE BEAMS
Year: 1870

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LETTERS PATENT to Benjamin Clarkson, of the City of Manchester,
in the County of Lancaster, and Samuel Charlton, of the same
Place for the Invention of "IMPROVEMENTS IN SCALE BEAMS.”
Sealed the 15th July 1870, and dated the 19th January 1870.
PROVISIONAL SPECIFICATION left by the said Benjamin Clarkson
and Samuel Charlton at the Office of the Commissioners of Patents,
with their Petition, on the 19th January 1870.
We, BENJAMIN CLARKSON, of the City of Manchester, in the County
of Lancaster, and SAMUEL CHARLTON, of the same Place, do hereby
declare the nature of the said Invention for IMPROVEMENTS IN SCALE
BEAMS," to be as follows:-
:-
This Invention relates to beam weighing machines, and consists
in the employment of improved mechanism below the scale which
carries the weight for enabling the goods scale to be firm on the
floor when the weight or load is to be placed on it and taken off,
and to be afterwards set free for enabling the weight to be deter-
mined. The beam is balanced on a support and carries the scales

page_text: in the usual manner, and when not acted upon by the mechanism is free
to oscillate as required. Below the scale which carrics the weights we
employ a plate fixed to a vertical rod having at the bottom a bowl in
contact with a tappet cam or eccentric fixed to a shaft working in
bearings fixed to the box or frame which carries the pillar or support of
the scale beam, and to the shaft is fixed a long lever in contact with a
spring. When the lever is placed in one position the plate is below
the scale and the beam is free, but when the goods have been weighed
and require to be removed and fresh goods placed on the lever is turned
to cause the tappet to raise the plate and weight scale and lower the
goods scale until it rests on the floor, and thus enables heavy articles
to be put on and taken off the scale with great ease without the labour
of removing the weights.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Benjamin Clarkson and Samuel Charlton in the
Great Seal Patent Office on the 19th July 1870....
t
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, BENJAMIN
CLARKSON, of the City of Manchester, in the County of Lancaster,
and SAMUEL CHARLTON, of the same Place, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her.
Letters Patent, bearing date the Nineteenth day of January, in the year
of our Lord One thousand eight hundred and seventy, in the thirty-third
year of Her reign, did, for Herself, Her heirs and successors, give and
grant unto us, the said Benjamin Clarkson and Samuel Charlton,
Her special license that we, the said Benjamin Clarkson and. Samuel
Charlton, our executors, administrators, and assigns, or such others
as we, the said Benjamin Clarkson and Samuel Charlton, our
executors, administrators, and assigns, should at any time agree with,
and no others, from time to time and at all times thereafter during the
term therein expressed, should and lawfully might make, use, exercise,
and vend, within the United Kingdom of Great Britain and Ireland, the
Channel Islands, and Isle of Man, an Invention for "IMPROVEMENTS IN
SCALE BEAMS," upon the condition, amongst others, that we, the said
Benjamin Clarkson and Samuel Charlton, by an instrument in writing
under our hands and seals, or under the hand and seal of one of
•

page_text: us, should particularly describe and ascertain the nature of the said
Invention, and in what manner the same was to be performed, and
cause the same to be filed in the Great Seal Patent Office within six
calendar months next and immediately after the date of the said Letters
Patent.
.
NOW KNOW YE, that we, the said Benjamin Clarkson and Samuel
Charlton, do hereby declare the nature of our said Invention, and
in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement and
accompanying Drawings, that is to say :-
This Invention relates to beam weighing machines, and consists in the
employment of improved mechanism below the scale which carries the
weight for enabling the goods scale to be firm on the floor or platform
when the weight or load is being placed on it to be set free when the
weight has to be determined, and be afterwards returned to the floor cr
platform when the weight or load has to be taken off.
The manner in which our improvements are to be performed will be
clearly understood by the following particular description thereof, reference
being had to the figures and letters on the accompanying Sheet of
Drawings in which Figs.'1 and 2 are side elevations of a scale beam to
which our improvements are applied; Fig. 3, a vertical section of part
of the same; and Fig. 4, a plan with some of the parts removed. The
beam a is balanced on any ordinary support b, and carries the scales c, d,
in the usual manner, and when our mechanism is not operated the beam
and scales are free to oscillate as required. Below the scale c which
carries the weights we employ a plate e fixed to a vertical rod f having
at or near the bottom a bowl g, Fig. 3, in contact with an eccentric cam
or tappet / fixed to the shaft i working in bearings fixed to the box or
frame which carries the pillar or support b, and to the shaft is fixed a
long lever 7 in contact with the spring m. When the lever is placed in
one position, shewn in Fig. 1, the plate e is below the scale c, and the beam
and scales are free, but when the goods have been weighed and require
to be removed the lever is turned to the position shewn in Fig. 2 to cause
the eccentric cam or tappet h to raise the plate e and weight scale c
and lower the goods scale d until it rests on the floor or platform, the
lever and parts connected with it being prevented from returning until
required by the spring m, and thus enable the weighed goods to be taken
off without requiring the labour of removing the weights from the

page_text: weight scale, and thus a great loss of time and expense is prevented and
when the goods scale is lowered for the goods to be taken off it is also
in the proper position for fresh goods to be placed on it.
Having now described the nature and particulars of our said Invention,
and the manner in which the same is to be performed, we desire it to be
understood that we claim, the improved mechanism below the scale
which carries the weight or weights for enabling the goods scale to be
firm on the floor or platform when the weight or load is being placed
on it to be set free when the weight has to be determined and be
afterwards returned to the floor or platform when the weight or load has
to be taken off, as all such improvements are herein described and
illustrated on the accompanying Sheet of Drawings.
In witness whereof, I, the said Samuel Charlton, have hereunto
set my hand and seal, this Fifteenth day of July, in the year
of our Lord One thousand eight hundred and seventy.