An Improved Calculator.
Year: 1893

page_text: Date of Application, 13th Jan., 1893
Complete Specification Left, 13th Oct., 1893-Accepted, 18th Nov., 1893
PROVISIONAL
SPECIFICATION.
An Improved Calculator.
I THOMAS WOLSTENHOLME Clerk of Haskayne near Ormskirk in the County
of Lancashire do hereby declare the nature of this invention to be as follows:-
My invention consists of a box of oblong shape, inside of which I place two
rollers in such a manner that they will easily rotate, at one end of each roller I
fix a cog-wheel; midway between the rollers I fix a rod or shaft, one end projecting
through the end of the box, and on the other end is fixed a cog or driving wheel
which is geared to the cog-wheels fixed at the end of each roller; on the end of
the rod or shaft projecting through the end of the box I fix a small handle or drum,
whereby the rod or shaft can be turned, this by means of the driving wheel turns
the two rollers in the same direction.
My scale or tabulated figures are printed on one sheet of paper or other material
of the required size, this I fix on the rollers in such a manner, that on actuating
the rollers by means of the handle or drum, the scale or tabulated figures are
rolled from one roller on to the other in either direction. Immediately over the
printed scale or tabulated figures, I place a glass top or cover on the under side of
which I fix another scale of tabulated figures, by actuating the handle or drum,
the required figures on the rollers are brought opposite to the fixed scale of figures
on the glass, giving the desired result.
Dated this 19th dor of January 1893
COMPLETE SPECIFICATION.
An Improved Calculator.
I THOMAS WOLSTENHOLME of Haskayne near Ormskirk in the County of
Lancaster Clerk 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 :-
My invention is designed so as to ascertain by the aid of certain mechanical
means and without the trouble of calculation by the user of my so called calculator
the result of various arithmetical problems such as are usually found on printed
tables, the use of my device saving the time occupied in turning over leaves of
books containing such tables as the required result can be seen at a glance in most
instances.
In order to more readily and clearly describe my said invention and the means
for carrying it into practice, I shall hereafter refer to the accompanying sheet of
drawings and to the figures and letters thereon.
Figure 1 is a full sized diagram of part of a table or scale prepared according
to and for use with my invention.
Fig. 2 is an isometrical view of a machine constructed according to my
various portions being cut away to show those beneath.
invention
Fig. 3 is a plan of such a machine looking downwards the lid being removed.
Fig. 4 is a longitudinal section on line - (Figure 3) and shewing lid removed
from off top or face and placed under bottom of box for convenience.
Fig. 5 is a transverse section on line y--y (Figure 3), the lid being shewn as
before.
The aforesaid drawings illustrate one of my machines or devices arranged so as
to give the amounts of various weights ranging from 1 quarter to 1 ton at various
D...031

page_text: prices ranging say from one shilling per ton to one hundred shillings per ton
together with the intervening pence, this table being particularly useful to the
employees of railway companies in calculating the amount of rates to be charged
for carriage of goods but tables of various natures may be previously worked out
and applied to the machine as hereafter described.
I arrange my calculator as follows:-I provide a flat box or case af suitable size
according to the nature of the calculation required and for such a purpose as above
suggested it would be say about 12 inches in length 6 inches in width and 3 inches
in depth.
Near the top of the box or case A I provide grooves a a Figures 2, 4 and 5 in
which may slide a sheet of glass or like transparent material B and a loose lid or
cover M, shewn removed from top and placed underneath box for convenience, may
be provided to protect this glass on the underside of which paste or otherwise
Eecure certain printed tables or columns of figures hereafter described and so that
they may be seen through the glass. Within the box I fix in suitable bearings two
rollers or drums C C1, Figures 2, 3, 4 and 5 and each carrying at one end, say the
rear, a cog wheel D. D. Between the rollers I mount a spindle E carrying a spur
wheel F gearing into the cog wheels D. D' in such a manner as to rotate them in
the same direction when turned by handle G at end of spindle and outside the box;
near the top of the box and near to the glass I may fix a longitudinal strip or
plate H, Figures 2, 5, to form a guide for the moveable and revolving table I
hereafter described.
Pasted or affixed to the underside of the glass is a permanent table of which
Figure 1 shews a portion; the centre part of this, K, is cut away or blank leaving
clear glass, through which may be seen the column on the moveable or revolving
table that is required to be brought thereunder in order to shew the amount
required.
I calculate any number of results of say hundred weights and quarters at say one
shilling per ton, and the results of these calculations I arrange in a vertical column
in groups of four, as shewn in Figure 1, and so as to come opposite the weights
arranged as shewn in weight column at inner edge of left hand portion of permanent
table, and this money result column is printed or otherwise delineated on and near
the left hand edge of an oblong sheet or strip of paper or other suitable material L;
alongside this first column I place another at a requisite distance (so as not to
shew when the first is displayed) calculated say at two shillings and so on until the
highest amount of rate or price to be determined is reached. One end of this
strip L is secured to the roller C and in such manner that the first column may be
plainly seen through the clear glass, but no other column, the remainder of the
strip L is then wound round the roller by rotating the spindle and when the
opposite end is reached it is drawn back, passed over the guide plate, and then
secured to or round the opposite roller C. The machine is now ready for action
and the revolving or moveable table may be wound backwards or forwards and
round either roller so as to bring the desired column under the clear portion of the
glass.
The results given as now described are those in which shillings only represent the
rate or price, when pence intervene it is only necessary to glance from the amount
given on the moveable table to the amount of in line therewith given on one of
the columns on either side of the moveable table and headed respectively 1d. 2d.
3d. 4d. 5d. 6d. 7d. 8d. 9d. 10d. 11d. and add the amount there given to the
amount given by the moveable table. Thus if it is desired to find the amount of
carriage to be charged for 13 cwts. 3 qrs. at 44s. 6d. The revolving table is
actuated until the heading 44s. and the table beneath it is shewn in centre, when
on said moveable table and in line with the figures in weight column desired
(viz. 13 cwts. 3 qrs.) will be seen the amount 30 shillings and 3 pence and in the
fixed column at right hand and under the heading 6d. will be found in the same
line as the amount 30. 3d. the figure 4 representing 4d. and this added to the 30s.
and 3d. will make 30s. 7d. the desired result.

page_text: my said
Having now particularly described and ascertained the nature of
invention and in what manner it may be performed I declare that what I
claim is
1. The method of and means for determining the results of various arithmetical
problems substantially as hereinbefore described with reference to the accom-
panying drawings.
2. In so called calculating devices the use of sundry scales of results arranged to
be wound on revolving rollers in combination with other fixed scales affixed to the
face of the device, substantially as hereinbefore described and as shewn by accom-
panying drawings.
POPPLEWELL & Co.,
Southampton Buildings, London, W.C., Agents for the Applicant.