Year: 1887

page_text: Date of Application, 11th Aug., 1887
Complete Left, 15th Oct., 1887
Complete Accepted, 15th Nov., 1887
JOHN MAXFIELD of 326 Liverpool Road, London, in the County of Middlesex
Mechanical Engineer do hereby declare the nature of this invention to be as
follows:--
My invention relates to a ready reckoning apparatus, adapted to be affixed to
Purses, Pocket-books and the like, or the same can be used separately, the main
object of which is to facilitate the correct reading without confusion, of the quantities
and amounts as hereinafter described.
In carrying my invention into practice, I provide a quadrangular shallow case of
brass, tin or any suitable metal, two small rollers are journalled in the ends of the
case running parallel, and at a convenient distance from each other, on the ends of
these rollers are secured small thumb knobs to facilitate the rotation of the said rollers
by the thumb and finger.
A strip of paper, or any other suitable material and of a convenient length whereon
is printed the given rate per pound or yard, and the amounts of monies corresponding
to the quantities impressed on the surface of the case as hereafter described, is secured
to the said rollers, and is adapted to travel from one roller to the other by the rota-
tion of either of the said rollers.
The strip of paper is of such a width as will exactly fit inside the case, so that
the ends of the case coming in contact with the edge of the strip of paper prevents
any lateral displacement.

page_text: On the front of the case are two longitudinal slots one eighth of an inch wide and
one eighth of an inch apart, these slots run the entire length of the case with the
exception of a quarter inch margin, above and below these slots are arranged the
quantities of which it is desired to find the amounts at a given rate per pound
or yard.
In the margin 1 provide a third slot, through which appears the given rate per
pound or yard when the strip of paper is made to travel by either of the rollers
being rotated.
Now it will be seen by the foregoing, that if it were required to find the amount of
9 yards at 7 d. per yard, it would be necessary to rotate one or other of the rollers
until the given rate viz. 74d. appears through the small slot, then the amounts
which appear through the other two long slots are the corresponding amounts to the
given rate, according to the quantities impressed on the surface of the case above and
below the said slots.

page_text: JOHN MAXFIELD 326 Liverpool Road, London, N. Mechanical Engineer 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 relates to a Ready Reckoning Apparatus adapted to be affixed to
Purses, Pocket books, Ladies Bags, and the like, or the same may be used separately;
the main object of which is to facilitate the correct reading without confusion, of the
quantities and amounts, as hereafter described.
In the accompanying drawing Figure 1. is a front view of the ready reckoning
apparatus.
Figure 2. is an end view of same, with the end of case removed.
The part indicated by A is a shallow case of brass or other suitable material, B, B,
are two rollers journalled in the ends of the case, on the ends of which, thumb
knobs b, b, are secured to facilitate the rotation of the said rollers with the thumb and
finger, F, F, are springs which press between the thumb knob b, and the end of case
to produce a slight tension on the rollers, on the said rollers is wound a strip of paper
or other suitable material C, figure 2, on which is printed the amounts of monies and
the given rate; D, D, are two slots about of an inch wide, above and below these
slots the quantities are impressed on, the surface of the case A, as shown, through
these slots appear the amounts printed on the travelling strips C, corresponding to the
quantities impressed on the case.
It will be seen that I preferably provide two slots D, this is done to contract the
apparatus as much as possible, which is essential when the same is to be affixed to a
purse or pocket book, for, if only one slot was provided, to obtain the same quantities
on the case the apparatus would have to be double the length.
Figure 3, is the end view of a two-sided ready reckoning apparatus with the end
of case removed, for this the strip C' is printed on both sides, and the necessary slots D
are provided; with this, higher calculations can be obtained without increasing the
size of the apparatus.
Figure 4 is a modification of my invention, the strip of paper C is formed into a
band and is stretched on the rollers B, B.
Figure 5, is a further modification, in this only one roller B, is used and the strip C
is pasted round it.

page_text: Having described the nature of my invention, and explained how the same can be
carried into practice, I claim
1-In a ready reckoning apparatus a band or strip of paper, or other suitable
material, whereon is printed the amounts of monies and given rate, and adapted to
travel on a roller or rollers, as described.
2-For a ready reckoning apparatus the case A provided with one or more slots D,
through which appear the amounts of monies and given rate.