Year: 1888

page_text: I PAUL ILLGEN of Katharinenstrasse Leipzig in the Kingdom of Saxony Empire
of Germany, Manufacturer do hereby declare the nature of this invention to be as
follows:-
This invention consists in an apparatus whereby additions may be performed that is
to say by means of which certain movements of parts may be made corresponding to
individual figures or numbers, the apparatus indicating after such movements the sum
total of the figures or numbers to which the movement corresponded.
The apparatus essentially comprises a device having an endless row of divisions
equal in size and one hundred in number in combination with another device having
also a hundred equal divisions arranged in an endless row, and capable of being moved
with reference to the first row.
The divisions of the stationary row are numbered in consecutive order.
Thus in carrying out the invention a circular plate is divided around its periphery
into a hundred equal divisions numbered at intervals in consecutive order.
Adjacent to this scale of divisions is a circular recess or track in which a ring is
supported so that it may be revolved about its axial centres which coincide with the
centre of the plate. The ring is radially divided into a hundred equal divisions and
these are preferably distinguishable each by a radial rib or tooth. One of said teeth
projects as a finger or indicator beyond the outer edge of the ring over the scale on
the plate. In the frame of the machine near to the zero of the scale on the plate, is a
counter of usual known construction having an arm adapted to be struck and deflected
once during each revolution of the ring by the projecting finger on said ring so as to
score "1" upon the "hundred " dial.
I will now illustrate the manner of adding with this apparatus.
The finger is placed over the first figure to be added, the tooth thus brought
opposite the zero is transferred to the number on the scale equal to the second figure
to be added, and so on cach tooth left at the zero during the previous movement
being transferred to the number to be next added.
At the conclusion of these movements the finger will indicate the sum.

page_text: The plate and ring divided each to 100 divisions it is possible to add together two
figured numbers. The plate and ring may also be divided into 1000 divisions.
The device may be modified as follows:
The counting ring is moved indirectly.
A straight scale of 1 to 100 is arranged, and next thereto an endless belt having
more than two hundred raised frets at equal distances is guided over pulleys. The
rear face of this belt carries spur teeth gearing into a spur wheel having in its web a
perforation. Below said perforation is a circular row of consecutive figures. By
moving the band in relation to the scale as before described with regard to the plate
and ring the wheel is revolved and the sum of the numbers added will be indicated
through the orifice.
Or again a modification may be made on the machine first described; a wheel or
disc takes the place of the ring the operation being exactly the same as before
set forth.

page_text: I PAUL ILLGEN of Katharinenstrasse Leipzig in the Kingdom of Saxony, Empire
of Germany, 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 :-
This invention consists in an apparatus whereby additions may be performed, that
is to say, by means of which, certain movements of parts may be made corresponding
to individual figures or numbers, the apparatus indicating after such movements the
sum total of the figures or numbers to which the movements corresponded.
Referring to tho accompanying drawings.
Fig. 1 is a plan view and Fig. 2 a central cross section of the apparatus..
Figs. 3, 4, 5 and 6 illustrate different positions of the parts hereinafter referred to.
Fig. 7 is a plan view. Fig. 8 a central cross section of a modified form of the
apparatus.
Fig. 9 is a detail view in section of a part of Fig. 7.
Fig. 10 is a plan, and Fig. 11 a central cross section of another modified
form.
Referring to Fig. 1, a circular disc A is divided around its periphery into a
hundred equal divisions numbered at intervals in consecutive order. Adjacent to this
scale of divisions is a circular recess or track in which a ring B is supported so
that it may be revolved about its axial centre which coincides with the centre of
the plate A. The plate A may be constructed as shown in Fig. 2 in which tho
removable annulus D is fastened by screws into the edge of the plate A, said
annulus forming the outer-wall-of-the-track for-the-ring. B and carrying the_
divisions.
The ring B is radially divided into a hundred equal divisions and these are
preferably distinguished each by a radial rib or tooth in the manner shown. Ono
of said teeth m'projects as a finger or indicator beyond the outer edge of tho
ring B over the scale on the disc A or part D. In the frame of the machine
near to the zero of the scale on the plate A or part D, is a counter of usual
known construction E having an arm & adapted to be struck and deflected once
during each revolution of the ring B by the projecting tooth m on said ring so as to
score upon the hundred dial.
י
I will now illustrate the manner of adding with this apparatus.
The finger mis placed over the first figure to be added, the tooth a thus brought
opposite the zero is transferred to the number on the scale equal to the second figure.
to be added and so on, each tooth left at the zero during the previous movement being
moved round to the number to be next added.
At the conclusion of these inovements the finger m will indicate the sum.
Thus for example the figures 7 + 5 + 4 + 8 are to be added. The finger m is
shifted to the figure 7 (Fig. 3). The tooth a¹ now arrived opposite zero is carried
now to the fioure 5 (Fig 4)

page_text: The tooth a opposite zero is now shifted to the figure 4, Fig. 5 and lastly the
tooth a brought opposite to zero by the last movement is now shifted opposite the
Fig. 8 (Fig. 6). The finger m will now be found to stand at 24 the sum of the figures
or numbers to be added.
With plate and ring divided each into 100 divisions it is possible to add together
two figured numbers. The disc and ring may also be divided into 1000 divisions.
In the modifications shown in Figs. 7, 8 and 11 the counting ring is moved
indirectly. A straight scale of 1 to 100 is arranged and next thereto an endless
belt G having more than two hundred raised frets or ribs at equal distances is
guided over pulleys as shown.
One of the edges of this belt carries spur teeth gearing into the spur wheel F
having on its web a circular row of consecutive figures. The wheel F is covered over
except for an orifice above the line of the figures. By moving the band G in
relation to the scale as before described with regard to the plate and ring, the wheel F
is revolved, and the sum of the numbers added will be indicated through the orifice f.
In the modification shown in Figs. 9 and 10 a wheel H takes the place of the ring B,
the operation being exactly the same as before set forth.
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 calculating machines,
1. The combination with a stationary numbered scale of a movable endless scale
having divisions equal to each other and to those of the stationary scale and a special
indicating or distinguishing finger or mark on one of the divisions of the movable
scale for the purpose set forth.
2. The combination of an annular stationary numbered scale of an annular endless
scale having divisions equal to each other and to those of the stationary scale rits or
frets on said divisions and a special distinguishing finger or equivalent on one of said
divisions substantially as and for use as set forth.
3. The combination of a stationary numbered scale, and a movable endless scale,
and a projecting finger on one of the divisions of the movable scale, with a counting
device having a lever adapted to operate it upon deflection by said projecting finger
substantially as and for the purpose set forth.
4. The construction consisting in the disc A with annular groove, the movable
ring B with frets or ribs and the containing ring D having stationary scale thereon
substantially as and for the purpose set forth.
5. The combination of toothed wheel F having a series of numbers thereon, as set
forth, a cover plate therefor, with orifice fan endless band G with spur teeth and
frets thereon and a stationary scale substantially as and for the purpose set forth.
Dated this 10th day of December 1998.
HERBERT & Co.,
18, Buckingham Street, Strand, London, W.C.,
Agents to Applicant.