IMPROVEMENTS IN MACHINERY FOR WEIGHING
Year: 1849

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
CHAMBERS DAY, of Birmingham, in the County of Warwick, Iron Founder and
Weighing Machine Manufacturer, send greeting.
WHEREAS Her present most Excellent Majesty Queen Victoria, by Her
Royal Letters Patent under the Great Seal of the United Kingdom of Great
Britain and Ireland, bearing date at Westminster, the Fourteenth day of
February, One thousand eight hundred and forty-nine, in the twelfth year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said William Chambers Day, my exors, admors, and assigns, Her especial
licence, full power, sole privilege and authority, that I, the said William
Chambers Day, my exors, admors, and assigns, and such others as I, the said
William Chambers Day, my exors, adiñňors, or assigns, should at any time
agree with, and no others, from time to time and at all times during the term
of years therein expressed, should and lawfully might make, use, exercise, and
vend, within England, Wales, and the Town of Berwick-upon-Tweed, my
Invention of "IMPROVEMENTS IN MACHINERY FOR WEIGHING;" in which said
Letters Patent is contained a proviso, that I, the said William Chambers Day,
should cause a particular description of the nature of my said Invention, and
in what manner the same is to be performed, by an instrument in writing
under my hand and seal, to be inrolled in Her said Majesty's High Court

page_text: of Chancery within six calendar months next and immediately after the date
of the said in part recited Letters Patent, as in and by the same, referenco
being thereunto had, will more fully and at large appear.
NOW KNOW YE, that in compliance with the said proviso, I, the said
William Chambers Day, do hereby declare that the nature of my said Inven-
tion, and the manner in which the same is to be performed, are fully described
and ascertained in and by the following statement thereof, reference being had
to the Drawing hereunto annexed, and to the figures and letters marked
thercon, that is to say:-
My Invention consists of a combination of mechanical parts for producing
weighing machinery; and in order that my Invention may be most fully under-
stood and readily carried into effect, I will proceed to describe the Drawing
hereunto annexed, in the various Figures of which the same letters of reference
are used to indicate the saine parts.
Figure 1 shews a front elevation of the machinery; Figure 2, a side elevation
thereof; Figure 3 shews a plan, with the platform and upper parts of the
machinery removed, and Figure 4 shews part of a vertical section of the
machinery. a, a, is the platform on which the article or thing to be weighed
is placed; this platform has a back b. The platform a is carried by the lever c,
the knife edge steel bearings of which rest on the steel parts e, e; these bearings
constitute the point or fulerum, about which the lever moves; j, j, are knife
edge bearings of steel, which are carried by the lever c, and it is on these
bearings that the platform a is received, there being steel piecos & fixed on the
under side of the platform a, as shewn. The lever c when weighing is lifted by
the rod i, so that it will be seen that the lever c is supported by its fulcrum d
at one end, and by the rod i at the other, the platform a acting on this lever c
intermediate of the points d and g. And it is this arrangement of the plat-
form a with the lever c, combined with steelyard weighing apparatus, as.
hereafter explained, which constitutes the chief peculiarity of this weighing
machinery. The connecting rod i connects the lever c with the steelyard
weighing apparatus o, the fulcrum of which is carried by the links p, and
lever handle q, as shewn. The lever handle 9, when in the position shewn
in the Drawing, holds the parts in position for weighing; and when the
lever handle is removed from under the fixed hook r, the platform a
will rest on the lower part f of the framing of the machinery. The s
steelyard weighing apparatus o is adjusted, as heretofore, by a weights,
moveable on a fixed screw; the other end of the steelyard o is guided by
fixed guides t, and the steelyard apparatus has a weight or scale u, suspended

page_text: back 6 of the
therefrom, by adding weights to which the platform will weigh articles or things
of greater weight, than when the apparatus is used in the state shewn in the
Drawing, as is well understood in the machines known as Fairbank's weighing
machines, of which machines the present Invention may be said to be an
improvement by materially simplifying the arrangement of levers for supporting
the platform, which according to this Invention is done by a simple lever in
place of the compound levers of Fairbank's machine. And in order to keep
the platform a correct, I apply the instrument 1, which by the end rests on a
triangular bearing, fixed to the upper framing, as shewn at Figure 5; the
other end enters an eye n, which fixed to and carried by the
platform a, the hooked portion sliding freely in the eye n.
state that this mode of having a back b with an instrument
applied to Fairbank's machines when weighing sacks and
requiring such support. I would however state that a similar instrument to l
has before been employed to a back of the platform of a weighing machine,
but in such case the platform was supported by the end of a lever, and not
within the fulcrum, or when applied to the present machine, or Fairbank's
machine; v, v, are wheels at the back of the machine, by which the machine
may be moved in the manner of a barrow when inclined, so as to rest on the
wheels; at other time the machine rests on the lower part of the framing, and
not on the wheels.
And I would
may be also
other articles
Having thus described the nature of my said Invention, and the manner of
performing the same, I would have it understood that I do not confine myself
to the details herein shewn and described, so long as the peculiar character of
my Invention be retained, as variations may be made in respect to such details
without departing from my Invention; but what I claim is the mode herein
described of combining a platform a with a lever c, and steelyard weighing
apparatus. I also claim the employment of the part to retain the back of a
platform correct when the platform is supported within the fulcrum, as in
respect to the lever c, and in the machines called Fairbank's machines. And
I also claim the mode of applying two wheels to the back of a weighing
machine, as herein described:
In witness whereof, I, the said William Chambers Day, have hereunto
set my hand and seal, this Sixth day of August, in the year of our Lord
One thousand eight hundred and forty-nine.
WILLIAM (L.s.) CHAMBERS DAY.

page_text: AND BE IT REMEMBERED, that on the Sixth day of August, in the year
of our Lord 1849, the aforesaid William Chambers Day came before our
said Lady the Queen in Her Chancery, and acknowledged the Specification
aforesaid, and all and every thing therein contained and specified, in form
above written. And also the Specification aforesaid was stamped according
to the tenor of the Statute made for that purpose.
Enrolled the Fourteenth day of August, in the year of our Lord Ono