Improvements in Cash Registers.
Year: 1897

page_text: This Print is in accordance with the Original Specification as it stands after
Amendment (under Section 18 of the Patents, &c. Act, 1883) as allowed
by the decision of the Comptroller General of the 13th day of December 1898.
Improvements in Cash Registers.
We, CHARLES JAMES FAUVEL and NORMAN COLLINS, both of Broad Street
House, Old Broad Street, in the City of London, Engineers, do hereby declare
the nature of this invention to be as follows:-.
This invention relates to improved apparatus for registering cash receipts and
has for its object to simplify the construction lessen the cost and improve the
efficiency of the apparatus as compared with other apparatus of the kind hereto-
fore in use.
The improvements relate, first, to key operated registering mechanisms wherein
the mechanism recording sums of any one denomination is actuated through the
medium of a drum which always makes one revolution for each sum of that
denomination registered whatever may be the amount of that sum; secondly to
means of coupling those keys appertaining to registering mechanisms recording
the receipt of sums of different denominations, which may be simultaneously.
depressed for the purpose of recording a compound sum, so that the partial de-
pression of two or more keys simultaneously will be completed in respect of all
of those keys by the continued pressure of the finger on one only of those keys
and the correct registration of the compound sum be effected notwithstanding
that the pressure on one or more of the keys is relaxed before complete depression:
thirdly to improved means whereby the return of any one or more keys after
partial and before complete depression is prevented and likewise the re-depression
of any one or more keys after depression and before fully rising to their normal
position; fourthly to the means of actuating the pence registering mechanisms
for the purpose of recording the receipt of odd halfpence independently of the
mechanism by which the same registering mechanism is operated for recording
the receipt of pence; fifthly to means whereby the simultaneous depression of
two keys appertaining to sums of the same denomination is prevented sixthly
to an improved construction of totalizing mechanism whereby sums received and
registered in amounts of a lower denomination are added and recorded in terms
of the higher denomination or denominations; and seventhly to mechanism for
furnishing for purposes of verification a printed record of each sum received.
The cash register comprises three sets or banks of key levers respectively
appropriated to registering mechanisms for recording the receipt of amounts of
the pounds (or half sovereigns) one shilling, and pence denominations. These
several key mechanisms being alike it will be sufficient to describe one of them.
All the keys of the bank or set are adapted to oscillate the same quadrant rack
which is in gear with the axis of a spring barrel so that by the depression of any
one of these keys the spring will be wound up to a given extent, the revolution

page_text: of the barrel itself being prevented until the complete depression of the key is
effected. The barrel is provided with peripheral pins respectively adapted to
engage with the several levers and spaced at equal angular distances apart around
its circumference so that when a key is depressed the barrel will be permitted
to rotate until the pin on the barrel corresponding to that key meets a stop on the
key which has been presented in the path of the pin by the depression of the key,
the stop being so hinged or otherwise mounted on the key as to remain in contact
with the pin, and thus arrest the rotation of the barrel, until the key has almost
completed its return to the normal position. The train of registering wheels is
mounted in a movable frame adapted to be brought by the depression of any
one of the keys into such position that the units wheel of the series will be thrown
into gear with the pin barrel just before the latter is released so that when the
pin barrel is permitted to partially rotate to an extent proportional to the value
represented by the key which has been depressed, the units wheel of the -regis-
tering mechanism will be rotated to a corresponding extent. When the key is
permitted to rise again to its normal position the pin barrel is released therefrom
and permitted to perform the complement of a complete revolution so that it also
returns to its normal position, this portion of its motion being idle or having no
effect on the registering mechanism.
The return of the key levers to their normal position is effected by a gravity
or spring actuated rocking frame having a locking cross bar with which the tail
end of the key lever which is depressed becomes engaged throughout its motion
in which the locking bar participates. This locking bar is common to or con-
tinuous across the three banks of keys corresponding to pounds, shillings, and
pence, so that should two or more keys (one of each bank) be depressed simul-
taneously to a partial extent the completion of the depression of any one of them
will through the agency of this locking bar cause the completion of that of the
others and thus ensure the correct registration of all the component amounts of
a compound sum. The locking bar comprises a hinged flap brought into position
to embrace the tail end of the lever or levers by being depressed by the action of
a stationary guide cam and the locking bar also serves to prevent an incomplete
stroke in either direction, for which purpose it is provided with a non-return
pawl adapted to engage with a stationary rack both on the up and down stroke
so as not to permit retrograde motion before the completion of the stroke.
To the bank of keys appertaining to sums of the pence denomination is added
a key for recording halfpennies, which gears directly by pawl and ratchet with
the axis of the units wheel of the registering mechanism so as to propel it for-
wards to the extent of half a unit of distance for each depression of the key. A
similarly acting key may be added to the bank of keys representing pounds, for
the purpose of recording the receipt of sums of ten shillings.
The means of preventing more than one key in each bank being depressed at
one time, consists of a row of steel balls contained in a trough and in the path of
the keys so that each key when depressed must pass between two adjacent balls,
there being so much total clearance between the balls as to give passage to only
one key at a time.
The totalizing mechanisms whereby sums received and registered in each bank
in amounts of a lower denomination are added and recorded in terms of the higher
denomination or denominations are similar for each bank excepting that the
units recorded in the pence bank represent pence, those in the shillings bank
shillings, and those in the pounds bank sovereigns or half sovereigns. The
same description will therefore suffice for all the mechanisms each of which com-
prises a series of peripherally inscribed numerator wheels the total sum recorded
at any time by which may be read off at an aperture formed in the casing of
the machine parallel to the axis upon which the wheels are so mounted as to be
capable of independent rotation, the units wheel being directly driven from the
spring barrel of the bank when thrown into gear therewith as already described.
Our invention relates particularly to the means whereby motion is successively

page_text: and at the proper time communicated from (say) the units to the tens wheel per-
taining to any one denomination and from the tens wheel of a lower to the units
wheel of a higher denomination, and so on so as to ensure the correct performance
of the totalizing operation. Each numerator wheel is loosely mounted upon the
common axis but prevented from accidental rotation by a jumper, and carries a
ring of teeth through which it receives motion from the next lower wheel (if
any) of the series and a pawl through which it communicates motion to the next
higher wheel (if any) of the series. This pawl, by the rotation of the wheel to
which it is attached is carried round within an internally faced stationary cam
ring whereby at predetermined points in the revolution of the wheel, the pawl
is depressed (in opposition to a releasing spring) into engagement with the ring.
of teeth on the next higher wheel of the series the angular position of the cam
surfaces being so arranged in the case of the different wheels as to cause the pro-
cess of summation to be correctly performed.
It will be obvious that any other known type of totalizing or counting and
registering mechanisms might he employed if desired.
The means whereby a printed record of each sum received is obtained, com-
prises a set of three type wheels (one for each bank or denomination) carrying
appropriate numerals (inked by suitable means) and mounted co-axially so as to
simultaneously print upon a ticket or ribbon of paper which is brought into
contact with the type wheels through the agency of the locking bar frame or of
some other part similarly set in motion by the depression of any key or keys in
the machine. The three type wheels are capable of independent rotation and are
independently geared with the spring barrels of the pounds, shillings, and pence
banks respectively so that each type wheel on the depression of any key in its
corresponding bank, will always be rotated to an angular extent equivalent to
the angular movement of the spring barrel of that bank, the contact of the ticket
or ribbon with the wheels taking place concurrently with the temporary arrest
of the rotation of the barrel or barrels by the key or keys depressed and ceasing
before the release and consequent completion of the rotation of the spring barrel
or barrels causes the type wheel or wheels to return to zero at the same time that
a fresh ticket or portion of the ribbon is brought into position for receiving the
next impression.
It will be obvious that this printing mechanism may be used to imprint a
record of each transaction not only on a separate ticket to be handed to the pur-
chaser but also by means of a carbon transfer sheet upon a ribbon adapted to
receive the successive records of all transactions during any required period.
Dated this 30th day of October 1897.
A. M. & WM. CLARK,
Chartered Patent Agents, 53, Chancery Lane, London.
Improvements in Cash Registers.
We, CHARLES JAMES FAUVEL and NORMAN COLLINS, both of Broad Street
House, Old Broad Street, in the City of London, Engineers, 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 relates to improved apparatus for registering cash receipts and
has for its object to simplify the construction, lessen the cost, and improve the
efficiency of the apparatus as compared with other apparatus of the kind hereto-
fore in use.

page_text: The improvements relate, first, to key-operated registering mechanisms wherein
the mechanism for recording sums of money of any one denomination of coin is
actuated through the medium of a set of keys and of a barrel which always
makes a single complete revolution for each such sum of money registered what-
ever may be the amount of that sum, there being as many drums and sets of
keys as there are denominations of coins to be recorded, that is to say for the
English monetary system (to which this description particularly applies) there
would be three such sets corresponding respectively to pence, shillings, and
sovereigns or half-sovereigns sterling, whilst for other monetary systems. the
construction would be modified accordingly; secondly, to means of coupling the
keys (appertaining to different sets of registering mechanisms for recording the
receipt of a sum of money made up of amounts of different denominations) which
may be simultaneously depressed for the purpose of recording such sum so that
the simultaneous partial depression of two or more keys appertaining to different
sets will be completed in respect of all of those keys by the continued pressure
of the finger on one only of those keys and the correct registration of the whole
sum will be effected. notwithstanding that the pressure on one or more of, the
keys is relaxed before complete depression; thirdly, to improved means whereby
to prevent the return of a key after partial and before complete depression, and
likewise the re-depression of a key before it has completely returned to normal
position; fourthly, to the means of actuating any one registering mechanism
(for the purpose of recording the receipt of half units, say halfpennies for
example) independently of the barrel and keys by which the same registering
mechanism is operated for recording the receipt of whole units.
Reference is to be had to the accompanying drawings forming part of this
Specification wherein Figure 1 is a plan of the machine for recording the receipt
of sums of money in terms of pence, shillings, and pounds sterling, the case being
omitted and parts of the machine being broken away. Figures 2 and 3 are oppo-
site end elevations (partly in section) of the mechanism for recording sums of
the pence denomination; Figure 3 shewing the mechanism for independently
recording halfpennies. The same letters of reference indicate the same parts in
all the figures.
66
وو
The cash register comprises three sets of key levers D S L respectively apper-
taining to registering mechanisms for recording the receipt. of sums of the
"pence,"
shillings, and "pounds," denominations. These several key
mechanisms being similar in construction, although different in respect of the
number of keys, it will be sufficient to describe one of them. I will therefore
describe the pence" set.
All the keys a of the "set" are carried by levers a¹ pivoted about a common.
axis band each key lever is adapted when depressed, to oscillate a quadrant rack c
which is actuated through the medium of a gravity or spring depressed bar d
normally resting across all the key levers and carried by arms pivoted on the
key axis with which the quadrant moves as one. The quadrant rack c is in
gear with a pinion e on the axis el of a spring barrel so that by the depression
of any one of the keys a the spring f will be wound up to the extent of one turn,
the revolution of the barrel being prevented by a detent carried by a lever h¹
pivoted at 2 and engaging with a stop pin on the barrel. The complete de-
pression of a key effects the withdrawal of this detent through the agency of a
slotted cam plate in one with the adjacent arm carrying the weight bar
and acting by its oblique portion ¹ on a stud h on lever . The keys which are
arranged in two tiers, have a constant angular movement, the levers pertaining to
the two tiers being suitably shaped so that they all act with equal effect on the
mechanism. The barrel axis e' winds up the spring f through the medium of a
pawl mounted on an arm fast on the axis, the pawl engaging with a-ratchet
tooth on wheel f³ loose on the axis to which wheel the one end of the spring is
connected, the other end being connected to the barrel g. f4 is a spring detent
engaging with a ratchet tooth f5 to prevent the unwinding of the spring on the

page_text: return of the quadrant rack c.
respectively adapted to engage with the several key levers a¹ and spaced at equal
The barrel g is provided with peripheral pins g
angular distances apart around the circumference of the barrel so that when
the detent h is withdrawn by the depression of a key, the rotation of the barrel
5 by the spring will be permitted and the barrel will be rotated until the pin g
which corresponds to that key, meets a stop in connection with the key lever
which has been presented in the path of the pin g¹ by the depression of the key,
the extent to which the barrel thus rotates being proportional to the value of the
sum represented by each particular key, and the completion of a revolution by
the barrel being deferred until the rise of the key to normal position. Each
stop g² is carried by a pair of plates 93 pivoted about the key lever axis band is
pressed upwards by a spring and depressed by the engagement of the key
fever a with a pin g5 so that the stop will have a less angular movement than
the key lever and will consequently remain in the path of the pin g¹ and thus
retain the barrel until the key lever a strikes the pin g which occurs when the
key has almost completed its return to normal position.
The numerator for indicating the total amount of the different sums repre-
sented by the successive depressions of the keys is omitted in Figure 1 in
respect of the "
pence" set but is shewn in end view at j in Figures 2 and 3 and
in plan in respect of the "pounds” set in Figure 1. Its main axis j¹ is mounted
in a frame moving as one with the detent lever h¹ about the axis 2 so as to be
brought by the depression of any one of the keys into such position that a toothed
wheel in one with the units wheel of the numerator will be thrown (through
the medium of an intermediate wheel 3) into gear with a wheel j in one with
the pin barrel g, these wheels coming into gear just before the detent his with-
drawn, so that when the pin barrel is permitted to partially rotate to an extent
proportional to the value represented by the key which has been depressed, the
units wheel of the numerator will be rotated to a corresponding extent. When
the key which has been depressed. has almost completely risen to its normal posi-
tion, the pin g' on the barrel escapes from the stop pertaining to the key lever
and the barrel is permitted to perform the deferred portion of one complete
revolution, this portion of its motion being idle or having no effect on the regis-
tering mechanisin. The barrel is arrested on completing its revolution by the
re-engagement of the detent h with the stop pin h³. The numerator may be of
any suitable construction, that known as the Harding counter being preferred.
Means of preventing more than one key of each set being depressed at one time,
may be provided such means consisting of a row of laterally movable distance
pieces of steel, preferably in the form of balls / or of rollers or discs contained in
a tubular race or casing m extending transversely across the key levers the race
or casing m being notched across to give passage to the key levers so that each
lever when depressed must pass between two adjacent balls 7, the race or casing.
being of such length that when a key thus depressed passes between two adjacent
balls the remainder of the balls will be thereby pressed tightly together in the
race so as to obstruct the depression of any other key of the set, there being
only so much total clearance between the balls as to give passage to one lever at
time. In Figure I the balls pertaining to the set of levers 1) are supposed to
ave been pushed to right and left by the key marked 6 so that when that key
vas depressed the balls being thus locked immovably in the race or casing m
Fould have prevented the concurrent depression of any other key of the set D.
t will be evident that the laterally movable distance pieces may have a sliding
nstead of a rolling motion of displacement, in which case they would be of sub-
tantially hemispherical or equivalent form with the convex side presented to the
ey levers.
The return of the key levers a¹ to normal position is effected by the pressure
ta cross bar n carried by arms n¹ pivoted on the key lever axis b, this bar being
ontinuous across the three sets of keys D S L corresponding to pence, shillings,

page_text: and pounds, so as to be raised by the depression of any one of them. To the bar n
is hinged a locking bar o also common to the keys of the three sets D S L, this
bar being adapted to engage the tail end or ends of any key lever or levers of
which the key or keys may be depressed so that should two or more keys (one of
euch set) be depressed simultaneously to a partial extent the completion of the
depression of any one key will, through the agency of this locking bar, cause the
completion of the movement of the other key or keys and thus ensure the correct
registration of a sum made up of amounts of different denominations. Tha
locking bar is a hinged flap and in the normal position of the key levers shewn
in Figure 2 it is held out of engagement with their tail ends by an arm terminat-
ing in a friction roller o abutting against a shoulder p' of a stationary guide
cam p.
The portion 2, 23, of the cam p is struck from the key lever axis
at such a radius as to cause (by contact of roller o¹ therewith) the locking bar o
to engage with the key lever of one set (or with the levers of different sets. that
may happen to be simultaneously operated) and to remain in engagement there-
with throughout their stroke, the transition from the locked to the unlocked
position, and vice-versa, being permitted by the depth of the notch 2. The
locking bar o also serves to prevent an incomplete stroke of any key lever in
either direction. For this purpose a non-return pawl 7 is pivoted on a bracket q¹.
mounted on cross bar n and is adapted to engage with a stationary rack r
(Figures 1 and 3) both on the up and down strokes so as to prevent retrograde:
motion of the bar n (and therefore of the locking bar o and of any key lever or
levers engaged therewith) before the completion of the stroke. The pawl is held
in engagement with the rack by a spring 3, the transition of the pawl from the
one to the other inclination (according to the direction of motion as indicated in
dotted lines in Figure 3) being permitted only at the ends of the rack r.
the set of keys I appertaining to sums of the " pence" denomination is added
a keys for recording halfpennies the lever s¹ of which has an arm coupled by
link to a levert pivoted to the spindle of the wheel before referred to, the
levert carrying a pawl t¹ gearing directly with a ratchet wheel fast on axis
so as to propel the units wheel of the numerator forward to the extent of one
tooth of wheel which corresponds to half a unit for each depression of the key 3
whose lever although subject to the locking bar mechanism is not subject to the
control of the balls so that it may be depressed along with any other key of the
pence set D.
"
To
In Figure 3 the halfpenny keys and the one-penny key are supposed to have
been thus depressed simultaneously for the purpose of recording the receipt of the
sum of 1d, the effect being that whilst the units wheel of the numerator is moved
forward the distance of a unit through the medium of the spring barrel during
the depression of the one-penny key a, the pawl will be moved back over the
teeth of the ratchet wheel t during the depression of the keys and when said key
is allowed to rise, the pawl and ratchet t¹, t2, will propel the units wheel forward
to the extent of an additional half unit.
Each set of key levers D S L is provided with a set of tablets bearing numerals
corresponding to the respective values of the keys to which they respectively
correspond, the tablet corresponding to any one key being raised into view as
usual, by the act of depressing that key to indicate to the customer the value of
the key which has been depressed. Referring again to the set of keys D each
tablet is carried by a vertical stem sliding in guides 2, 3, the tablets when
in the lowered position being concealed by the casing of the machine (not shown)
provided with a window at which the tablet corresponding to any key that may
be depressed, is exhibited. For this purpose the stem u¹ of each tablet rests upon.
its corresponding key lever a¹ or on a shoulder stop attached to the stem, the
correct relation of the two longitudinally of the machine being maintained by
vertical guide bars of a frame a² between which the key levers work. The tablet
or tablets raised by the depression of any one or more keys will be maintained in

page_text: the raised and visible position, until the registration of the sum received, by a
detent bar common to all the tablets of all the sets which is adapted to engage
under a shoulder u on the stem the bar v being pivoted on end gudgeons and
provided with a lever arm v¹ connected by a link with a lever pivoted to the
frame and projecting in the path of a finger pivoted to the bar n so that the
lever will be raised by the finger and disengage the detent bar from the
stem or stems of any tablet or tablets that may have been raised at the previous
operation of the machine, this action taking place early in the stroke when next
key in any one of the sets of keys is depressed. The finger being pivoted and
spring-pressed and the ends of the lever and finger being bevelled, the latter
will pass the former freely on the down stroke in readiness to act on it again at
the next depression of a key.
a
Having now particularly described and ascertained the nature of the said in-
vention and in what manner the same is to be performed we declare that what
we claim is:-
1. In a cash registering machine the combination with a set of keys appro-
priated to register the receipt of sums of a particular denomination, of a spring
actuated barrel having peripheral studs set at angular distances from the zero
point proportional to the values represented by the keys to which they respectively
correspond, mechanism whereby the winding up of the spring to a constant extent
and the release of the barrel from the zero position are effected by the depression
of any one key of the set, each key being adapted when depressed, to engage with
its corresponding stud and arrest the barrel after a partial revolution correspond-
ing in extent to the value of the key depressed substantially as and for the
purpose specified.
2. In a cash registering machine the combination with a set of keys appro-
priated to register the receipt of sums of a particular denomination, of a spring
actuated barrel having peripheral studs set at angular distances from the zero
point proportional to the values represented by the keys to which they respectively
correspond, mechanism whereby the winding up of the spring to a constant
extent and the release of the barrel from the zero position are effected by the
depression of any one key of the set, each key being adapted when depressed,
to engage with its corresponding stud and arrest the barrel after a partial revolu-
tion corresponding in extent to the value of the key depressed, mechanism
actuated by the depression of any one key of the set whereby during such partial
revolution of the barrel, registering mechanism is brought into gear with the
barrel so as to be actuated thereby to an extent corresponding to the partial
revolution thus permitted and whereby the registering mechanism is disengaged
from the barrel when by the return of the key the barrel is permitted to perform
the remainder of one complete revolution substantially as specified.
3. In a cash registering mechanism comprising a set of key levers and a spring
actuated barrel having studs angularly spaced around the barrel for engagement
by respective key levers, the combination with each key lever, of a stop so acted
on by the key lever in the one direction through a spring and in the other directly,
as to be presented in the path of the corresponding stud early in the stroke of
the key lever in the one direction and be withdrawn from engagement with said
stud late in the stroke of the key lever in the other direction so as to enable the
mechanism controlling the release of the barrel from, and its re-engagement in,
the zero position to be operated by part of the stroke of the key lever as specified.
4. In a cash registering mechanism comprising a set of key levers and a spring
actuated barrel having studs for engagement by respective keys the studs being
angularly spaced around the barrel in proportion to the respective values of the
keys, and means whereby the spring is caused to be wound and the barrel to be
released from zero position by the depression of any one key, the combination
with the stud barrel, of registering mechanism adapted to be geared with the
barrel and of means whereby the registering mechanism is so geared with, and

page_text: is actuated by, the barrel only during that part of its revolution between the zero
position and its arrest by the key which has been depressed so that the extent to
which the registering mechanism. will be actuated will correspond to the extent
of such partial revolution and to the value represented by the key which has been
depressed substantially as specified.
5. In a cash registering machine the combination with a set of key levers, of
a bar adapted to be. raised by the oscillation of any one lever of the set and of a
locking bar hinged thereto and adapted to engage the levers of the set, and of a
stationary guide cam adapted by its form to act on the locking bar and cause
the latter to enter into locking engagement only with the lever operated immedi
ately after said lever commences to move, and to remain in eugagement there-
with throughout its stroke and to release it only on its return to normal position
substantially as specified.
6. In a cash registering machine the combination with a set of key levers,
of a bar adapted to be raised by the oscillation of any one lever of the set and of a
locking bar hinged thereto and adapted to engage the levers of the set, and of a
stationary guide cam adapted by its form to act on the locking bar and cause it to
enter into locking engagement only with the lever operated, immediately after it
commences to move and to remain in engagement therewith throughout its stroke
and to release it only on its return to normal position, and of means whereby
the return of the locking bar and lever engaged thereby is prevented until the
completion of the stroke, said means consisting of a double-acting non-return
pawl and of a rack with which the pawl is adapted to make a non-return engage-
ment in either direction of travel of the locking bar substantially as specified.
7. In a cash registering machine comprising two or more sets of key levers
said sets being respectively appropriated to register the receipt of sums of a parti-
cular denomination, the combination with the two or more sets of key levers, of a
presser bar common to all and adapted to be raised by any lever of either set and
of a locking bar hinged to such presser bar and adapted to engage such of the
levers of all the sets as may be oscillated at one time and of a guide cam adapted
to act on the locking bar and to cause it to enter into locking engagement with
the levers of different sets which may be simultaneously oscillated, to the exclu-
sion of the others, and to remain in engagement therewith throughout the stroke
and to release them only on return to normal position so that the stroke of all
the keys simultaneously depressed to a partial extent will be completed by the
complete depression of any one of them substantially as specified.
8. In a cash registering machine comprising two or more sets of key levers,
said sets being respectively appropriated to register the receipt of sums of a
particular denomination, the combination with the two or more sets of key levers,
of a presser bar common to all and adapted to be raised by any lever of either
set, and of a locking bar hinged to such presser bar and adapted to engage such
of the levers of all the sets as may be oscillated at one time and of a guide cam
adapted to act on the locking bar and to cause it to enter into locking engagement
with the levers of different sets which may be simultaneously oscillated, to the
exclusion of the others, and to remain in engagement therewith throughout the
stroke and to release them only on return to normal position so that the partial
stroke of all the keys simultaneously depressed will be completed by the com-
plete depression of any one of them substantially as described, and of means
whereby the return of the locking bar and lever engaged thereby is prevented
until the completion of the stroke, said means consisting of a double-acting non-
return pawl and of a rack with which the pawl is adapted to make a non-return
engagement in either direction of travel of the locking bar as specified.
9. In a cash registering machine the combination with a set of key levers, a
spring actuated stud barrel engaged thereby, means of winding and releasing
the barrel by the depression of a key, means of bringing registering mechanism
into gear with the barrel during the depression of the key, of a supplementary
key and of pawl and ratchet mechanism operated thereby and adapted to act

page_text: directly on the units wheel of the registering mechanism independently of the said
set of keys and during the rise of the supplementary key for the purpose of moving
the wheel to the extent of a semi-unit, substantially as specified.
Dated this 2nd day of July 1898.
A. M. & WM. CLARK,
Chartered Patent Agents, 53, Chancery Lane, London.