An Improved Calculation Table Device for the Cotton Market.
Year: 1894

page_text: Date of Application, 23rd Jan., 1894
Complet: Specification Left, 21st Feb., 1894-Accepted, 5th May, 1894
PROVISIONAL SPECIFICATION.
An Improved Calculation Table Device for the Cotton Market.
HENRY HOWARD HANMER 25 Mellors Buildings 30 Exchange Street East
Liverpool Cotton Broker do hereby declare the nature of this invention to be as
follows:-
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This invention has reference to calculating tables for the cotton market, for
giving at a glance the value thereof in different values fluctuating according to the
day's value of a given price of futures," or other fixed price. In a device.
according to this invention I employ a revolvable circle of cardboard or other"
material on which is printed or written the price of "futures or other standard in.
a circle, beginning from the lowest, to the highest prices; then about 8 other
circles of fractions are printed or written also from the highest to the lowest, but
so placed that no two fractions of the same amount are visible at the same time,
when the other front card board or other material is placed over the circular form.
On this front card are cut openings, which shew through, firstly the price of the
standard, and then about 32 to 64 other prices according to the aperture through"
which it shews the fraction over the openings. Other tables of qualities etcetera;
may be placed at discretion.
Dated the 22nd day of January 1894.
COMPLETE SPECIFICATION.
An Improved Calculation Table Device for the Cotton Market.
I, HENRY HOWARD HANMER, of 25 Mellors Buildings, 30 Exchange Street
East, Liverpool, in the County of Lancaster, Cotton Broker, do hereby declare
the nature of this invention and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement :-
This invention has reference to tables for calculating and giving at a glance the,
value of different kinds of cotton, fluctuating according to the day's value of a given,
price of "futures," or other given price.
A table device under this invention comprises a rotatable disc or plate having
printed or written upon it at one part, say the periphery, the price of "futures
(or other standard) in a circle, and constituting a scale beginning from the lowest
price to the highest prices. In addition to this scale there jare other scales
arranged in circles, and consisting of fractions. printed or written also from the
highest to the lowest prices; these scales being so arranged that no two fractions
of the same amount are visible at the same time in the complete device.
other part of the device consists of a face card or plate having an aperture or
window in it through which the standard price of the standard scale will shew, and
other windows through which the fraction scales will shew.
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On the face will be printed also in connection with these windows numerals in
thirty seconds or sixty fourths which come opposite the fractions on the disc scales,
and these represent points "on," above the price of "futures exposed at the
standard price window. The fraction opposite any of these figures will represent
the addition of the standard figure being exposed at the window, and the number
of points "on," which will be the price of spot cotton. And in addition to these
on the opposite side of the window are other scales of figures for "off" values, that
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page_text: is, by subtracting any of these numbers from the standard given, the number
opposite them in the moving fraction scale will represent the price of spot cotton
for so many points off. The terms herein employed are those used on the Liverpool
cotton market, and will be well understood to those in such business.
The drawing herein given and forming a part of this Specification, represents in
front elevation an improved calculating table device for the cotton market
according to this invention. It consists of a front sheet a of cardboard or
equivalent material and a circular or disc b behind same, and mounted on and
adapted to revolve upon a central axis c: which may be of any suitable known kind,
such as an ordinary metal eyelet mounting. In the front sheet a, a' is the window
or aperture through which the figures of the standard price scale at the periphery
of the disc b appear, and a² are four windows or apertures in a through which the
fraction scale figures used in connection with the standard scale appear, which in
any case, take the whole range of fractions between two successive numbers, or, a
complete unit; namely, they are made out or divided up into thirty second parts,
and there are eight circles of figures, and four windows which multiplied make the
thirty two. On the left and right of these windows of the front a are the scales
respectively representing the prices "on" and "off" also in thirty seconds.
These scales both on the face a and the disc bare arranged numerically in
circles, or circulated in order; and the scales used are in thirty; second parts,
i.e., thirty seconds of a penny. They however may be sixty fourths, or other
division of the unit.
The numerals as arranged on the front a and the disc b are worked out to give
the correct readings as described; however, it is to be stated that though this
arrangement is the most convenient I have devised, yet it may be modified and
arranged differently as regards the number of circles of figures on the disc. As
for instance the thirty two points and fractions might be adapted to lie directly
under one another in lieu of in multiple sets, as shewn; however, this would not
be so convenient. Also, the standard or prices referred to is the one mostly used
at present, yet other standards might be used in lieu thereof; and as regards the
points on or "off," in some cases where desired in lieu of numerals, I may use
other signs, words or figures equivalents thereof.
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Having now particularly described and ascertained the nature of this inven
tion and in what manner the same is to be performed, I declare that what I
claim is :-
The herein described calculation table device comprising a front board, sheet,
or face having apertures therein, and numeral scales marked thereon (or their
equivalents as described), and a moving device, as a rotary disc, thereon, having
a standard scale and fractional scales, arranged to operate in the manner and for
the purposes specified.
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CHEESBROUGH & ROYSTON, Fels. Chart. Inst. P.A.,
15, Water Street, Liverpool, Applicant's Patent Agents.