Improvements in Reckoning Machines.
Year: 1889

page_text: Date of Application, 28th June, 1889
Complete Specification Left, 24th Mar., 1890-Accepted, 3rd May, 1890
PROVISIONAL SPECIFICATION.
Improvements in Reckoning Machines.
I, FRIEDRICH SOENNECKEN, manufacturer of Poppelsdorf at Bonn on the Rhine in
the province of the Rhine, German Empire do hereby declare the nature of this
invention to be as follows:-
My invention relates to reckoning machines and enables by means of simple
mechanism the working out of examples in the first four rules of arithmetic.
The apparatus is divided into two separate parts which are entirely independent
from each other; by means of the one part, questions in addition and subtraction
may be answered and by means of the second part questions in multiplication and
division.
In order to make my invention more clear I refer to the accompanying drawing
in which similar letters denote similar parts throughout the several views.
Fig. 1 is a front view of the machine.
Fig. 2 is a vertical section through the same.
A is the ground plate made of wood or any other suitable material to which a
circle of figures K is affixed by means of the blocks k k. Inside this circle K is a
wooden disc S¹ which revolves on the pivot i and which has figures on its circum-
ference. This disc S¹ may be turned round by means of the button B. The figures
on the circle K and disc S are arranged in the well known manner so that those of
the inner circle can be subtracted from or added to those of the outer and the result
of the subtraction or addition will be the figure indicated by the pointer which is
fixed to the disc S¹.
Besides this arrangement for subtraction and addition, the apparatus has another
mechanism for multiplication and division, the principal features of which are the two
double armed levers H H which are pivoted at i. These two levers H H¹ have their
one arm formed into a pointer which may be placed over any figure of the circle of
figures K, and which, by means of the strips connecting their other arms to
pointer Z, force the pointer Z to point to the figure indicating the result of the
multiplication of the two figures in the circle K over which the two pointers H and H¹
are placed.
The pointer Z is fixed to the pivot by means of the long slit S so that it can be
moved in any direction which the position of the two levers H and H' may demand
and is able to range over the whole network of figures N.
The working of this part of the machine is the following; to multiply: the two
pointers Hand H' are placed over the two factors to be multiplied and the pointer Z
will show the product on the network of figures N. To divide the pointer H must
be placed over the divisor, the pointer Z over the dividend and pointer H' will show
the quotient.
:
c T
1000
COMPLETE SPECIFICATION.
Improvements in Reckoning Machines.
I, FRIEDRICH SOENNECKEN of Poppelsdorf at Bonn on the Rhine in the province
5 of the Rhine, German Empire, manufacturer, 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 reckoning machines and enables by means of simple
mechanism the working out of examples in the first four rules of arithmetic,

page_text: The apparatus is divided
from each other. By means
two separate parts which are entirely independent
the one part questions in addition and subtraction
may be answered, and by means of the second part questions in multiplication and
division.
In order to make my invention more clear I refer to the accompanying drawing
filed with my Provisional Specification and in which similar letters denote similar
parts, throughout the several views.
Fig. 1 is a front view of the machine.
Fig. 2 is a vertical section through the same.
A is the ground plate made of wood or any other suitable material, to which a
circle of figures K is affixed by means of the blocks k k. Inside this circle K is a
wooden disc S which revolves on the pivot and which has figures on its circum-
ference. This disc S¹ may be turned round by means of the button B. The figures
on the circle K and disc S¹ are arranged in the well known manner, so that those
of the inner circle can be subtracted from or added to those of the outer and the
result of the subtraction or addition will be the figure indicated by the pointer which
is fixed to the disc S¹.
Besides this arrangement for subtraction and addition the apparatus has another
mechanism for multiplication and division, the principal features of which are the two
double armed levers H H¹ which are pivoted at i. These two levers HH' have their one
arm formed into a pointer which may be placed over any figure of the circle of
figures K, and which by means of the strips 66 connecting their other arms to
pointer Z, force the pointer Z to point to the figure indicating the result of the
multiplication of the two figures in the circle K over which the two pointers H
and H are placed.
The pointer Z is fixed to the pivot i by means of the long slit S so that it can be
moved in any direction which the position of the two levers H and H' may demand,
and is able to range over the whole net work of figures N.
:
The working of this part of the machine is the following; to multiply the two
pointers H and H' are placed over the two factors to be multiplied and the pointer Z
will show the product on the network of figures N. To divide: the pointer H must
be placed over the divisor, the pointer Z over the dividend and pointer H' will show
the quotient.
'
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is:
In Reckoning Machines:
1. The combination of two concentric discs K. and S, being turnable against each
other, the disc K bearing one series of figures and the disc S bearing two equal series
of figures symmetrically arranged, and a row of + and signs, for the purpose.
as described.
-
2. A net work of figures N with a disc K bearing two equal rows of figures, in
combination with two levers H H¹ each having its fulcrum at i, and connected with
the bars 6 6, and with the slotted pointer .Z, passing over the fulcrum i, for the
purpose as described
FRIEDRICH SOENNECKEN.
By Rayner & Cassell,
37, Chancery Lane, W.C., Agents for the Applicant.