An Improved Indicating Mechanism for Check Tills, Counting Devices, and the like.
Year: 1896

page_text: Date of Application, 15th Oct., 1896
Complete Specification Left, 15th July, 1897-Accepted, 15th Oct., 1897
PROVISIONAL SPECIFICATION.
An Improved Indicating Mechanism for Check Tills, Counting
Devices, and the like.
We, RICHARD HENNING and ADOLF KOLBE, both of 67 Zeil, Frankfort-on-the-
Main, in the Empire of Germany, Merchants do hereby declare the nature of this
invention to be as follows:-
This invention has for its object an arrangement whereby it is possible, by the
use of a row of keys, to ascertain a given number according to a keyboard, and
simultaneously to continuously add the separate figures which have thus become
visible, and this will be hereinafter described with reference for example to a
check till.
The base on which the apparatus is mounted contains a drawer for the money
which is daily paid in. This drawer does not extend up to the rear end of the
base or bottom frame, but leaves behind it a free space which is utilized for
various devices. A shaft is arranged transversely at the back of the drawer, on
which shaft five bell-crank levers are mounted to loosely revolve thereon, which
levers as well as other levers provided with counterweights are necessary for the
adding apparatus, as will be hereafter described.
On the upper plate of the base or bottom frame of the apparatus, four grooved
rails are arranged, on which run four racks which are each carried by two rollers.
The racks themselves engage with cogwheels which are loosely mounted on
a shaft.
The check till taken for example has four rows of keys corresponding to the
said four racks. The separate pfennige up to 9 pfennige (when German coinage
is used) are indicated by the first of these four rows, and 10, 20, 30 pfennige and
so on by the second. The third and fourth rows are also arranged in a similar
manner, but only for marks. Each row of keys has nine keys, so that in this
check till at the most M. 99.99 can be indicated at once.
In this example, weights are employed as the moving power, which weights
are mounted to revolve or swing with toothed segments which are carried by
double levers lcosely mounted on a shaft. These swinging weights are connected
with a series of links and levers as will be hereinafter explained.
On the indication of a given number, that is to say, when the corresponding
keys are pressed down, the corresponding racks are released by catch projections,
which are hinged on levers provided with counterweights and mounted to swing
on a fixed shaft.
On the release of the racks the operating weight hereinbefore referred to forces
the double levers, mounted on the same shaft and which carry toothed segments,
to make an oscillation by means of which the cogwheels engaging with said
toothed segments are caused to rotate in opposite directions to one another.
These cogwheels carry the figure wheels and the cogwheels which engage the
racks and serve for moving the racks and figure wheels simultaneously in opposite

page_text: directions of rotation until the previously released racks on their forward move-
ment catch against the pressed down keys, whereupon such numbers become
visible on the figure wheels as it was desired to show by the pressing down of the
corresponding keys. In order to return the figure wheels again to their zero
position, and also simultaneously to return the pressed down keys to their initial
position, the following arrangement is employed:
A flat iron bar is fixed on the outside of the bottom of the drawer and is pre-
vented dropping or descending by means of a roller arranged in the bottom of
the frame. On this bar is provided a tooth or projection, which, on the drawing
out of the drawer, engages a double lever pivoted on a suitable fulcrum. A link
pivotally connected to said double lever, lifts or raises, by means of levers pivoted
on a shaft, the operating weights back into their initial position, and bars or
links in combination with other levers pivoted on a shaft at the front of the
apparatus raise the depressed keys up again, and place the apparatus again ready
for use. The double lever, the links and the levers attached to the links are
arranged in the centre of the apparatus, and by means of levers and projections
(as many of which are provided as there are rows of keys) return the depressed
keys and also the figure wheels once more into position.
In order to allow of the figures shown in succession on the figure wheels being
continuously added, an arrangement is provided which consists essentially of
gearing, on the fixed spindle of which various addition discs are separately and
loosely mounted so as to be turned in succession. These addition discs, each
consist of a toothed wheel, of which the first four stand in engagement with equally
large cogwheels which are mounted on the shaft which carries the rack pinions,
so that the proportion of transfer is 1:1. With these cogwheels, the figure discs,
which are provided with figures from 0 to 9, and ratchet discs which have 10
ratchet teeth, are connected. These addition discs can only rotate in one direction,
because in the hollow addition discs which revolve loosely on the shaft, ratchet
wheels, each provided with 10 teeth, are firmly mounted on the shaft, whilst
corresponding pawls and springs acting on the same are mounted on the spokes
of the addition discs and therefore follow their movements.
The bell crank levers which, as already stated, are pivotally mounted on a fixed
shaft, carry on their free arms small slide rollers. An equal number of levers
corresponding to these bell crank levers are pivotally arranged on a shaft to the
rear, which levers are provided with counterweights on their rear ends, and in
front with an inclined or bevelled surface. An equal number of push rods are
pivotally connected with these levers at their front ends near the inclined or
bevelled surfaces, against which push rods springs mounted on the base plate
press, and through the upper ends of each of which rods a small pin is passed
transversely.
An equal number of detents corresponding to the push rods are also loosely
pivoted on a shaft.
The mode of operation of the check till is as follows:
On a payment being made, the person receiving the money presses suitable
keys, whereby the same amount as he has been paid becomes visible to the payer
on the figure wheels. The receiver then pulls out the drawer and places the
money therein, whilst as already hereinbefore described, the apparatus is again
so adjusted by means of levers and links that it may be utilised for indicating
another amount.
By the drawing out of the drawer, the small rollers mounted on the bell crank
levers travel over the inclined planes, thereby raising the other levers and also
the push rods, the movements of which are equal; the levers and push rods then
fall back again into their initial position owing to the action of the counterweights.
As soon then as one of the addition discs has made a complete revolution, a pin,
mounted at the side of the same, raises the detent and the push rod is pushed
forward by the spring so that a pin pushed through the same engages beneath a
tooth of the ratchet disc. On the next opening of the drawer, this addition disc

page_text: is further rotated to the extent of one tooth, that is to say to a further figure, as
the pin passing through the push rod on rising encounters a tooth of the ratchet
disc standing above it and turns the latter to the extent of one figure, whereupon
the pin slides down on the bevelled projection of the detent, and places itself in
front of the latter until the addition disc has again made a complete revolution.
In this manner the additions of each disc, as soon as the latter has completed
a revolution, are carried forward to the next following one, and the first one
commences its addition afresh.
The cash till, herein before described as an example, adds, for instance, up to
M. 9999.99. Of course the cash till may be arranged for indicating larger or
smaller amounts and additions, or to suit any system of coinage.
11004
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, Agents for the Applicants,
An Improved Indicating Mechanism for Check Tills, Counting
Devices, and the like.
We, RICHARD HENNING and ADOLF KOLBE, both of 67, Zeil, Frankfort-on-the-
Main, in the Empire of Germany, Merchants, 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 for its object an arrangement whereby it is possible by the
use of a row of keys to exhibit a given number and simultaneously to add together
the separate figures which have thus become visible.
In the accompanying drawings a constructional form of the apparatus is shown
by way of example as it is preferably applied for check tills in those countries
in which the decimal monetary system is in use. If the till be designed for use
in a country like Great Britain which does not employ the decimal system, the
key rows, number wheels, and adding mechanism must of course be otherwise
divided to correspond to the respective monetary system.
In these drawings:-
Figures 1 and 2 show a longitudinal section of the apparatus broken in two for
clearness, Fig. 1 showing the lower half and Fig. 2 the upper half of the view.
Figures 3 and 4 show a front view thereof also broken in two.
Figure 3 shows in section and elevation an addition disc.
Figs. 1, 1, and 1° are separate views of the carrying mechanism of the
addition discs.
Figure 5 shows a plan of the apparatus.
Figures 5, 7, and 8 show a special bolting mechanism for the addition discs.
The base upon which the apparatus is mounted contains a drawer S" for holding
the money which is paid in during the day. This drawer S" does not reach to the
end of the lower frame, but leaves at the back a free space which may be utilised
for various devices. At the back of the drawer Su there is placed a shaft w passing
through the space in a transverse direction, upon which shaft there revolve loosely
five angle levers W, and which together with the lever W¹ provided with counter-
weight G are utilised for the adding mechanism as hereinafter described.
Upon the workplate of the apparatus are arranged four grooved bars s, on which
work four racks Z, each supported by two rollers R. The said racks Z are
themselves in connection with gear wheels Z', which revolve loosely upon the
shaft w¹.

page_text: The check till mechanism illustrated in the drawings which is designed for
French money possesses four rows of keys corresponding to the abovementioned
four racks Z. By means of the first of these four rows the single centimes may be
indicated up to nine centimes, with the second row the tens, twenties, thirties and
so forth, and the third and fourth rows are arranged in the like manner for the
francs paid in. Each row consists of nine keys T, so that by means of the check
till illustrated, the highest amount which can be indicated at one time for any
single transaction or payment is ninety nine francs, ninety nine centimes as there
are only four indicating wheels R' each indicating from "0" to "9." Weights G
(Figs. 2 & 4) serve as the motive power, and form one piece with the toothed
double sectors D. The latter revolve loosely upon the fixed shaft w upon which
they are placed one by one consecutively, and cannot become displaced in the
axial direction. When the apparatus is not in use, consequently when all the
figure wheels indicate zero, then all the racks Z are stopped and they are more
over held by the latches S pivoted at S on the side of the levers H and suspended
movably upon the shaft w
In order to compel the figure wheels R' provided with figures from nought to
nine and which revolve independently of one another upon the fixed shaft o
to adjust themselves automatically according to the key touched in order to indi-
eate a desired figure, the racks Z corresponding to the same must first be released.
This is effected by the action of the keys T upon the levers H' revolving around
and moreover in such a manner that when the keys are pressed down the free
swinging ends thereof move downwards, which motion is followed by the hinder
lever arms of the latches S', whilst the front ends of the same which hold the
racks Zure raised. After the release in this manner of the racks Z, the weights G'
sink down and set the mechanism in action and they compel the toothed double
sectors D fixed singly with them each upon a sleeve to make a swinging motion,
by which the wheels zal gearing in the said toothed sectors are caused to revolve
in opposite directions the one to the other. Of these last mentioned wheels, z¹
rotates the counting wheels R', and z rotates the tooth wheels Z', which serve for
the propulsion of the racks Z, (and both simultaneously) the rotation being con-
tinued in opposite directions, until the released racks Z have come in contact in
their forward motion with the stop plates d' of the keys T and are there held
fast. The counting wheel R will then have been revolved so far as will
correspond to the depression of the corresponding keys, and upon standing still
will indicate the requisite number. In order to bring back again the number
wheel It and the rack Z into their initial position and at the same time to raise
the depressed key T, it is only necessary to pull out, the drawer S" placed
underneath. Upon the bottom of this drawer S there is fixed, upon the middle
of the ouler side, a flat iron bar a (which is prevented from falling down by means
of a roller placed in the bottom of the frame) which possesses upon its hinder
end a projection n. When the drawer S" is pulled out this projection w² engages
the double lever h, which in turn draws the bar g pivotally attached to it, which bar
is on the other side secured by means of a hinge to the lever arm'n firmly fixed
upon the movable shaft wt. As soon as the drawer S". has been pulled out
sufficiently far, the projection or catch n of the double lever h slips over the
projection and the lever falls hack again and upon the subsequent closing of
the drawer S the projection n' raises the catch and then places itself behind
the same in the manner shown in Figure 1, in order again to engage the double
lever upon the next opening of the drawer. The shaft w bears, in addition to
the lever arm n, as many levers m as number wheels are present and these levers
are pivoted to the bars . The bars are provided above with a longitudinal slot
in which the weights G are controlled by means of pins d placed at the side.
The lever arm n is forked in front in order to take up in addition to the bar
also the bar o bent at an angle, which bar reaches quite to the end of the apparatus
and is there bent downwards in the form of a hook.
ๆ
The shaft w goes crossways through the descending supports of the side pieces

page_text: of the frame at the front end of the apparatus, which shaft bears on the one hand
the forked lever arm p (the fork of which however is closed below by means of
the pin a) and on the other hand the small curved levers n³. The bar o passes
through the forked lever p and the hook thereof which is bent downwards can
engage the pin a¹ by the drawing of the bar o. The bent levers n² are so dis-
tributed upon the shaft was to lie each under one of the large levers H placed
below the keys T.
As may be seen in Figure 5 the lever h, the bars q and o and the lever pare
placed in the middle of the width of the apparatus, whereas the lever and
bars m, l, and n² are supplied to the same number as there are rows of keys. Con-
sequently if, after a given indication, the figure wheels as well as the keys and
the racks, that is to say the whole apparatus, are again to be made ready for a
fresh indication, it is requisite to open the drawer S as already stated. By means
of this, the double lever is actuated, the bar q, and by aid of the lever » also
the bar o are drawn up, whereby at the same time the lever m with its bar
and the bent levers n2 upon the shaft w are raised. The lower end of the slot of
the lever then strikes against the pins d of the fallen weight G and raises the
same in this manner into their original position again, so that the toothed double
sector D which is in one piece with the weight G makes its revolving motion
backwards in the opposite direction to that already explained. This backward
motion is necessarily followed also by the toothed wheels z z' standing in connec-
tion with the aforesaid piece D, and with the same also by the wheels Z' and the
racks Z in connection with them as also the figure wheels R fixed upon the
shaft wo, so that finally all the parts are again restored to their initial position.
Meanwhile the depressed keys T are again uplifted by the action of the bar of
which takes place simultaneously with that of the bar g, whereby the bent
levers 2 press against the levers H' whose counter weight G aids the movement
The levers H then impinge against the stop plates of the keys T and thus
raise the latter again upwards. At the same time the latches S¹ pivoted to the
levers H at S and swinging on shaft w³, drop and retain the racks %, thus holding
fast the whole mechanism.
In order that the figures indicated consecutively upon the figure wheels I may
be added together continuously a device is provided which consists essentially
of a fixed shaft w over which the various addition discs A¹ are loosely placed and
are revolved singly in their order. These addition discs A' (see Figure 3) are
hollow and are provided on one side with a closed bottom, which has 10 teeth
projecting over the diameter of the counting drum, and which bottom is formed
in this manner as a driving wheel S2. In the interior of each drum there is placed
a stop wheel S3 also provided with 10 teeth, firmly connected with the separate
drums and consequently taking part in their motion. Upon the open side of the
addition discs A' are placed upon the prolonged hub of the same tooth wheels Z
in such a manner that the same revolve loosely thereon. To one spoke of these
tooth wheels Z2 is movably attached a pawl k upon which presses continuously a
spring secured to another spoke of each wheel and which pawl rests upon the
stop wheel S. Further, there is attached at the side to the tooth wheels Z
another little pin S, which after each full revolution of the addition disc A¹
releases a hammer or catch H2 in the manner hereinafter described. By means
of this arrangement of the tooth wheel 2 and of the stop wheel S the first is
enabled to revolve in both directions, but the addition disc A' only moves with
it in the one direction.
The figures indicated by the figure wheels R are conveyed to the addition
discs A standing in connection with the tooth wheels 7 by the arrangement that
the toothed sector D, which engages in the tooth wheels 2 and revolves the figure
wheels R', at the same time revolves the wheels z Z' and Z3 which are fixed upon
a common sleeve and placed over the shaft w, the wheel 73 being in gear with the
wheel 7. After each full revolution of such an addition dise the addition thereof

page_text: must be conveyed to the next following disc. This is effected upon the opening
of the drawer S" which is shorter than the base of the apparatus.
At the back of the drawer there is attached for this purpose in the transverse
direction, a shaft w upon which there revolve as already stated five angle levers W
independently the one of the other, and the free lever arms whereof possess little
rollers. Moreover, there is attached to the frame of the apparatus another
shaft w on which revolve a corresponding number of levers W provided behind
with a counter weight G and in front with a sloping plane F (Figs. 1 and 3). The
said planes F are attached to the front end of the said levers W¹ on one side in
such manner that upon the drawer Su being pulled out the rollers ¹ will slide over
the said planes lifting them up together with the bars St. At the place at which
the sloping planes F of the levers W₁ are placed there are also connected therewith
by means of hinges the bars S, against which springs f¹ secured upon the work
plate press, whilst through the upper end of each bar S a pin S¹ is passed
cross ways.
Moreover, upon the connecting shaft we connecting the side frame pieces of the
apparatus there are further loosely and revolubly mounted catches H² which
correspond in number to the bars $4, which catches usually assume the position
indicated in dotted lines and hold fast the pins s of the bars St.
Through the drawing out of the drawer S" the rollers r¹ secured to the free
arms h¹ of unequal length of the angle levers W pass under the inclined planes F.
The levers Was also the draw bars S4 (the number whereof is equal) are thereby
consecutively raised and the pins s passed through the same strike (when they
are liberated from the catches H2,) against a tooth of the wheel S2 and thereby
turn the addition discs correspondingly. In order to release the bars $ and the
pins sa pin s² fixed at the side of each addition disc raises, after each full revolu
tion, that catch H2 which holds fast the pins s¹ of the bar S+ belonging to the next
addition disc, so that this next disc is hereby liberated and the bar S4 under the
influence of the spring f¹ is moved forwards, and consequently the pins comes to
stand under a tooth of the wheel S2. Upon the opening of the drawer S" the pin s¹
which passes through the upper end of the bar $ strikes against the tooth of the
wheel S2 which is over against it, and thereby revolves the addition disc one
figure further, whereupon the pin s¹ slips down behind the catch H2 and is held
by the same again fixed until the passing addition disc again has completed a full
revolution and releases it, (see dotted lines in drawing).
This will be understood by referring to Figures 1, 1, and 1°. Let A¹ repre-
sent the addition disc for the "tens," and 2 (indicated in dots) the pin on the
adjacent addition disc of the "units" (this disc being removed in the drawing
for clearness). In Figure 1 the bar S is shown held back from the wheel S²
by the catch H2 which engages over the pin s¹. The bar S cannot therefore
engage the wheel S2 in rising. On the adjacent addition disc (for the units)
completing one revolution (by the gearing Z3 Z2 in the manner hereinbefore
described) which represents ten units, the pin 2 which is fixed on the side of the
said adjacent units disc will have been carried up by the said dise thus raising the
catch H and releasing the bar S which latter then springs against the wheel S³
under the impulse of the spring f', as shown in Figure 1. The catch H2 then
slips off the pin s and returns to its initial position, and on the bar S4 being raised
by the pulling out of the drawer (as before described) the wheel S2 and therewith
also the "tens" disc A¹ are rotated one step (one figure) as shown in Figure 1.
On the bar S dropping down again, its pin s¹ slides along the back of a tooth of
the wheel S2 and then along a wedge-shaped projection (shown in dots) on the far
side of the catch H2 until it again lies behind the said catch in the position shown
in Figure 1 ready to repeat the operation upon another ten units being indicated
by the "units" disc in order to carry said amount to the "tens" disc as just
described. In this manner the additions of each disc after the same has made a
revolution are transferred to the following one and the first disc recommences
its addition.

page_text: The check till illustrated in the accompanying drawing will add up to au
aggregate of 9999.99 francs as there are six addition discs A¹.
The apparatus can obviously be adapted for larger or smaller indications and
additions as also for every desired monetary system.
The mode of operation of the whole apparatus is as follows:-
As soon as the person making use of the check till receives money from a
customer he presses down the keys corresponding to the amount paid in, where-
upon the amount is visibly indicated to the customer by means of the figure
wheels R¹ in the manner already described.
The tooth wheels Z₁ which move the racks Z are placed together with the
tooth wheels Z3 which move the addition discs corresponding to the key rows upon
a single common sleeve, so that simultaneously with the figure wheels R¹ also
the corresponding addition discs A¹ are revolved, only with the difference that
upon the opening of the drawer S" the first again return to zero whilst the latter
remain standing. Upon the opening of the drawer S" the person who receives the
money places the same therein, upon which the indicated figure again disappears
and the apparatus is again ready to indicate another number. By the drawing
out of the drawer S" the decimal transfer arrangement for the addition is actuated
in the manner above described so that after the drawing out, the sum of all the
amounts hitherto indicated may be read upon the addition discs in a straight line.
In place of the above described moving and stopping arrangement for the
addition discs A' the method shown in Figures 6, 7 and 8 might also be employed.
This is distinguished from that above described in that by the use thereof it is
quite impossible that an addition disc might be revolved by centrifugal force
two numbers at once, and consequently give an incorrect and unreliable addition.
The separate addition discs A A¹ and so forth are formed as before of a single
counting drum provided with figures from nought to nine, together with an
impelling wheel S2 and a tooth wheel 7 capable of revolution in both directions,
and are also placed loose and separate from one another upon the fixed shaft w
To the impelling wheel S there are attached upon its side 10 pins s³ corresponding
to the 10 teeth, which serve for the bolting or holding fast thereof, whilst the
pin s is applied to the tooth wheel Z2 (shown dotted in Figures 6 and 8), which
after each full revolution thereof raises the catch 3 of the following addition
wheel and thereby connects the impelling wheel S for the further propulsion of
the said following addition disc.
Upon the fixed shaft revolves the pawl and the catch n³ but also indepen-
dently of one another, and the first is so placed that it always rests upon one of
the pins, whilst the latter holds back the bar S (provided with projections m
and pins s¹) so far from the wheel S that the teeth of the latter cannot be touched
by the projections m³ of the bar S should the same be impelled upwards (Fig. 6).
The bar S is actuated by a spiral spring f, and is pivotally connected with the
bent lever K turning loosely about the shaft w, the front end of which lever is
formed with a projection i. The hinder part of the said lever K is provided in
this instance with a cavity in which a catch o³ provided with the part d³ revolves
upon the pivot 23. The said lever K is actuated by the pin disc h³ at certain
intervals of time, but my invention is not limited to this method of motion and
might embrace any other known arrangement for the actuation of the said lever.
All the parts set forth in the above description are multiplied as many times
as there are addition discs employed.
The mode of operation of this arrangement is as follows:-
Referring to Figure 6, the drawing shows the apparatus at the moment in
which the projection or catch n³ is to be raised by the pin s2 (shown in dotted lines
in the drawing) of the preceding addition disc A¹ (see Figure 7); the pawl 3 holds
the uppermost of the ten pins fast and prevents a backward motion of the
addition wheel. If now the addition wheel A1 bearing the pin becomes
stationary and rotates no further, or in other words if the catch n³ is not raised and
the bar S is thereby not inserted, then the same will always be raised, on the

page_text: further progress of the pin disc h³ in the direction of the arrow, by means of the
lever K, so that it is moved up before the wheel S2 and clear of the teeth thereof,
consequently the addition diso A is not moved further by such one number. But
if the addition wheel A revolves further with the pin s, the catch
is raised,
the bar S is liberated and by the influence of the spring f is thrust against the
wheel S.
If now the part of the lever K provided with projection o³ is pressed down by
the pin dise h³, or by any other mechanism, the front end thereof provided with
the projection i will rise with the bar S. The latter strikes first upon the tooth
of the wheel S and thereby rotates the addition disc A one figure further, or
what comes to the same thing, until the bar S4 stands out of contact with the tooth
actuated. At this moment the projection of the lever K is raised so high that
the same holds the lowest of the 10 pins whereby any further motion of the
addition wheel A is prevented, which micht occur if the same were propelled too
violently. This last described position is illustrated in Figure 8.
Upon the further movement of the pin disc ³ in the direction of the arrow
the bent lever K falls back again into its original position, consequently the
bar S is thereby obliged to fall hack also, but has always the tendency through
the pressure of the spring to move itself forwards, which is prevented by the
wheel S lying in front of it. The teeth of the wheel S hold the bar S' back until
the sinking catch or projection n³ has again seized the pin & of the bar St.
On the further descent of the lever K and of the bar S the projection n³
effects in its tum the complete withdrawal of the bar S from the wheel S and
brings it again completely out of gear with the wheel S2 until the passing of the
addition disc A has effected a complete revolution, and the pin 2 thereof again
lifts up the projection n³.
Having now particularly described and ascertained the nature of our said in-
vention and in what manner the same is to be performed, we declare that what we
claim is:-
In apparatus for the display of a given number and continuous addition of the
individually indicated amounts, characterised by:-
1. The arrangement of keys T which act upon levers H revolving upon the
shaft in such a manner that the latches S¹ hinged thereto rise upon the descent
of the levers H' and thereby release the rack bars Z which have hitherto been held.
fast, whereupon the said bars move forward by aid of the gearing Z' D, 2 and 2¹
so far and the figure wheels R revolve so long until the racks Z have obtained a
hold upon the depressed keys T, for the purpose through pressure upon the keys
to render visible downwards upon the figure wheels R¹ any desired number.
2. By a device for the return of the separate mechanisms into their original
position consisting essentially of the levers m n p and a fixed upon the shafts w
and w³, the bars q and o connecting the same, and also the revoluble double lever
and the projections n¹ secured to the bottom of the drawer S", by means of which
it is possible by drawing out the drawer S" to raise at the same time the levers H
revolving upon us and the depressed keys T and at the same time by aid of the
Lars the counter weights G'.
3. By an arrangement for the addition of the singly indicated figures consisting
of addition discs A' possessing the capability of revolution only in one direction
and which (by means of the tooth wheels 23 with a transmission proportion of 1:1)
are driven by the shaft to for the purpose of transmitting the figures indicated by
the figure wheels R' with the aid of corresponding gearing upon the accompanying
addition discs A¹.
4. By a transmission or decimal transfer mechanism in which after each full
revolution of an addition disc a pin s placed at the side of the tooth wheel 7
raises a catch H and thereby releases a bar S provided with a projection
which then under the influence of a spring f¹ moves forward until the pin s
thereof engages under a tooth of the wheel S, whereupon the bars S are raised

page_text: and hereby the corresponding addition discs are moved onwards by one tooth or
one number, and then again fall down into their original position, in which they
are held back by means of the catches H2 until again a release is effected by
means of the pins 2 after a full revolution of the addition disc.
5. By an arrangement for the raising of the bars S4 whereby by aid of the
levers W revolubly attached to the back of the drawer S", and of the levers W₁
provided with counter weights G under whose inclined planes F the rollers r
fixed at various distances from the back of the drawer S to the free arms
the levers W can roll, and thereby raise the levers W₁ as also the bars S* hinged
to the same upon the opening of the drawer S".
of
6. By an arrangement for preventing at the right moment any motion of the
addition discs A either forwards or backwards whilst allowing the tooth wheel Z3
its necessary revolution in both directions, in which at the side of the wheel S2
a row of pins s³, are fixed whose uppermost pin is always held by the pawl k³,
whilst the lowest pin is held by the projection i upon the rising of the lever K,
to which latter simultaneously the bar S necessary for the decimal adjustment
of the addition wheel A¹ and standing under the influence of the spring fis
pivotally connected, which bar is held so long out of contact that the wheel s² by
means of a projection n³ only is released.
Dated this 15th day of July 1807
W. P. THOMPSON & Co.,
Liverpool, London, Manchester and Birmingham,
Patent Agents for the Applicants.