Improvements in or connected with Dating Stamps.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improvements in or connected with Dating Stamps.
I, ARTHUR ROBERT KELLY, of 24, Cardozo Road, Holloway, in the County of
Middlesex, Engineer, do hereby declare the nature of this invention to be as
follows:-
The invention relates to that class of dating stamps in which the type repre-
senting the numbers of the days of the month, the names of the months and
the numbers of the years are formed upon discs or wheels mounted upon a shaft
or axis in a carriage or holder adapted to be depressed in order to give the re-
quired impression.
In this class of stamp it is necessary to shift one or more of the discs around
the shaft or axis each day in order to make the required change in the date and
this has hitherto been accomplished by slacking a clamping device fixing the
discs with their shaft then turning the disc or discs by hand and again clamping
them in position.
This operation is exceedingly troublesome and takes considerable time and the
object of the present invention is to obtain a simple means whereby the required
changes may be effected in an easy and expeditious manner.
In carrying the invention into effect the type wheels are mounted upon a
shaft or axis in a holder or carriage mounted in guides in a frame and adapted
to be depressed at the times desired in order to give the required impression
upon the paper whilst the inking is effected by an oscillating platen in the
customary manner.
The wheels or discs instead of being clamped upon the shaft as heretofore
are according to the present invention loose thereon and each disc or wheel has
fixed therewith upon one face thereof a ratchet wheel and in connection with
each of these ratchet wheels is employed a driver or clawker which drivers are
rigidly fixed with a holder pivotally connected with the short arm of a lever
mounted upon an axis of motion at the upper part of the holder or carriage and
the long arm of the lever is adapted to be acted upon by the hand of the operator
in order to effect the required change.
In the absence of some other controlling means the whole of the wheels or
discs would be advanced the distance of one tooth of the ratchet wheels at each
operation of the change lever but in order to advance them in the required order
the following arrangement of parts is adopted.
The usual four wheels are employed, namely one each for the units, tens,
months, and years, but instead of forming the tens wheel with a single group
of numerals ranging from one to three as heretofore three of such groups are
employed arranged in equi-distant positions around the wheels with blanks between
them whilst the tens wheel is placed outside the units wheel.
In each of the ratchet wheels in addition to the ratchet teeth is a deep notch
but the notches are of differential depths that is to say the notch of the units
wheel is the deepest, that of the tens wheel is shallower, that of the months wheel

page_text: is shallower, and that of the years wheel is still shallower, whilst the tens wheel,
is provided with one notch adjacent to each group of three figures and the teeth
of the drivers are of differential depths corresponding to the notches or the notches
might be of one uniform depth and the teeth of the drivers of differential depth.
By this arrangement of parts in the revolution of the units wheel each time
the units wheel comes round to "9" the tooth of its driver will drop into its
notch and permit the driver of the tens wheel to engage its ratchet wheel and
advance it the distance of, one tooth and bring the figure "1" into position
alongside the "0" of the units wheel whilst after the number of days in the
montli has been thus recorded the teeth of the units and tens drivers will drop into
their respective notches and permit the months wheel to be advanced the dis-
tance of one tooth of its ratchet. wheel thus' changing the month and when the
months wheel has described a complete revolution and the year has run out the
drivers of the units.tens and months wheels will drop into their respective notches
and permit the years wheel to be advanced the distance of one tooth of the
ratchet wheel thus changing the number of the year. $ -3.
The tens wheel is fed forward the distance of one tooth of its ratchet wheel at
each revolution of the units wheel and after one group of numerals on the tens
wheel is finished with on the completion of the month the next group is brought
into position by working the change lever until the first numeral of that group
appears.
Instead of forming the tens wheel with three groups of numerals it may be
provided for example with two such groups but the former is the preferred
arrangement.
By the means hereinbefore described the required changes may be effected
by the simple depression of the hand lever each lay without the necessity-for-
the laborious-operation-of-unclamping, setting, and again fixing the wheels
herein before referred to.
WHITE & WOODINGTON,
Rooms 221-225, Birkbeck Bank Chambers,
Southampton Buildings, London, Agents.
improvements in or connected with Dating Stamps.
I, ARTHUR ROBERT KELLY, of 24, Cardozo Read, Holloway, in the County of
Middlesex, 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:-
The invention relates to that class of dating stamps in which the type repre-
senting the numbers of the days of the month, the names of the months and
the numbers of the years are formed upon discs or wheels mounted upon a shaft
or axis in a carriage or holder adapted to be depressed in order to give the re-
quired impression.
In this class of stamp is is necessary to shift one or more of the discs around
the shaft or axis each day in order to make the required change in the date and
this has hitherto been accomplished by slacking a clamping device fixing the
discs with their shaft then turning the disc or discs by hand and again clamping
them in position.
This operation is exceedingly troublesome and takes considerable time and the

page_text: object of the present invention is to obtain a simple means whereby the required
changes may be effected in an easy and expeditious manner.
In carrying the invention into effect the type wheels are mounted upon a
shaft or axis in a holder or carriage mounted in guides in a frame and adapted
to be depressed at the times desired in order to give the required impression
upon the paper whilst the inking is effected by an oscillating table in the
customary manner.
The wheels or discs instead of being clamped upon the shaft as heretofore
are according to the present invention loose thereon and each disc or wheel has
fixed therewith upon one face thereof a ratchet wheel and in connection with
each of these ratchet wheels is employed a driver or clawker which drivers are
rigidly fixed with a holder pivotally connected with the short arm of a lever
mounted upon an axis of motion at the upper part of the holder or carriage and
the long arm of the lever is adapted to be acted upon by the hand of the operator
in order to effect the required change.
In the absence of some other controlling means the whole of the wheels or
discs would be advanced the distance of one tooth of the ratchet wheels at each
operation of fthe change lever but in order to advance them in the required order
the following arrangement of parts is adopted.
The usual four wheels are employed namely one each for the units, tens,
months and years, but instead of forming the tens wheel with a single group
of numerals ranging from one to three as heretofore three of such groups are
employed arranged in equi-distant positions around the wheels with blanks between
them whilst the tens wheel is placed outside the units wheel.
In each of the first three ratchet wheels in addition to the ratchet teeth is a deep
notch but the notches are of differential depths that is to say the notch of the units
wheel is the deepest that of the tens wheel is shallower and that of the months
wheel is still shallower whilst the tens wheel is provided with one notch adjacent
to each group of three figures and the teeth of the drivers are of differential depths
corresponding to the notches or the notches might be of one uniform depth
and the teeth of the drivers of differential depth.
By this arrangement of parts in the revolution of the units wheel cach time
the units wheel comes round to "9" the tooth of its driver will drop into its
notch and permit the driver of the tens wheel to engage its ratchet wheel and
advance it the distance of one tooth and bring the figure "1" into position
alongside the "0" of the units wheel whilst after the number of days in the
month has been thus recorded the teeth of the units and tens drivers will drop into
their respective notches and permit. the months wheel to be advanced the dis-
tance of one tooth of its ratchet wheel thus changing the month and when the
months wheel has described a complete revolution and the year has run out the
drivers of the units tens and months wheels will drop into their respective notches
and permit the years wheel to be advanced by its driver the distance of one tooth
of the ratchet wheel thus changing the number of the year.
The tens wheel is fed forward the distance of one tooth of its ratchet wheel at
each revolution of the units wheel and after one group of numerals on the tens
wheel is finished with on the completion of the month the next group is brought
into position by working the change lever until the first numeral of that group
appears.
Instead of forming the tens wheel with three groups of numerals it may be
provided for example with two such groups but the former is the preferred
arrangement.
And in order that the said invention may be more clearly understood and readily
carried into effect I will proceed aided by the accompanying drawings more fully
to describe the same.
DESCRIPTION OF THE DRAWINGS.
Figure 1 is a front elevation of an instrument constructed according to the
présent invention and showing the narts in thain -.

page_text: Figure 2 is a side elevation thereof.
Figure 3 is a similar view partly in section and showing the carriage or holder
and type wheels in their depressed position.
Figure 4 is a sectional view of parts taken from the opposite side and illus-
trating more particularly the driving or changing mechanism.
Figure 5 is a front view of the holder and drivers separately.
Figures 6 are side views of the drivers separately.
Figure 7 is a front view of the group of type wheels separately showing their
arrangement.
Figures & are side views of the type wheels separately and Figure 9 is a
development of the tens wheel.
In the several figures in which like parts are indicated by similar lett..s of
reference Figures 4 and 7 are drawn to and increased scale with respect to
Figures 1, 2, 3 and 5 and Figures 6 to 9 are drawn to a further increased scale.
a represents the frame of the instrument, a¹ represents a tubular guide or stem
fixed with the frame a.
b represents the holder or carriage for the type wheels with the crown of which
holder is fixed the lower end of a spindle & which passes through the bore of the
tubular stem a¹ and at its upper end is fixed with an operating knob or handle 62
by means of which the holder b may be depressed at the times desired to give the
required impression of the type.
In order to raise the holder again to its normal position a spring 63 is employed
which is coiled around the spindle within the upper part of the tubular stem a¹
and at its lower end rests upon and takes an abutment against a boss or projec-
tion within the stem aand-at--its upper-end-presses against the knob or
handle b
The type wheels c d e f are loosely mounted upon a shaft or axis b* fixed with
the carriage or holder 6 and which at its ends projects beyond said holder where
it-works-in-guide-slots--formed-in-the-sides_of_the_frame_a_so as to guide the
holder or carriage in its movements washers 64* being employed to hold the
carriage central in the frame a. The inking of the type is effected in the cus-
tomary manner by means of a pad carried by an inking table which is at g'
pivotally connected with offsets from the frame a and is by a link pivotally
connected with the holder or carriage b so that in the descent of the latter-
the inking table g will be thrown out of the way to leave a clear passage for the
type as shown at Figure 3 whilst on the restoration of the carriage to its normal
position by the spring 63 the pad of the inking table g will be thrown into contact
with the type thereby inking the same.
The type wheels or discs c d e f, which are provided with the usual
facets c d e f bearing the type instead of being clamped upon the shaft
as heretofore are according to the present invention and as hereinbefore stated
loose thereon and each type wheel or disc has fixed therewith upon one face thereof
a ratchet wheel ²²²f having one tooth or its equivalent for each character
or row of characters of the type wheel and in connection with each of these ratchet
wheels is employed a clawker or driver c* d* c*
These drivers or clawkers are rigidly fixed with a holder h pivotally mounted
at in the forked end of the short arm 4 of the thumb or change lever ³ and
held to its work by a spring h², and the change lever h³ is mounted upon an axis
of motion at h carried by an offset or bracket at the upper part of the
carriage b and the long arm of the lever h³ is furnished with a thumb piece h³*
by means of which it may be acted upon by the hand of the operator in order to
effect the required change whilst a compression spring 8 at its lower end taking
an abutment against the top of the carriage.b and at its upper end acting against
an offset from the change lever h³ serves to restore the parts to their normal
positions upon the release of said lever.
In order to prevent the running back of the type wheels and also to prevent
the overdriving of said wheels a pawl is employed in connection with each of the

page_text: ratchet wheels c d e f and said pawls are mounted upon a shaft or axis ¹ at its
ends mounted in the carriage b and said pawls are held to their work by means of
springs fixed with said carriage.
The usual four type wheels are employed namely one c for the units, one d
for the tens, one e for the months and one f for the years but instead of forming
the tens wheel d with a single group of numerals ranging from one to three
as heretofore three of such groups are employed arranged in equidistant positions
around the wheel with blanks between them as shown more particularly at
Figure 9 and further more the tens wheel d is placed outside the units wheel c
when mounted in position in the carriage 6 as will be seen upon reference to
Figuos 1 and 7:
In the absence of some other controlling means than those herein before
described the whole of the type wheels or discs c d e f would be advanced the
distance of one tooth of their ratchet wheels c, d, e, f, but in order to advance
them in the required order the following arrangement of parts is adopted.
In each of the ratchet wheels c, d, e, in addition to the ratchet teeth is a deep
notch but said notches are of differential depths, that is to say the notch c³
of the ratchet wheel of the units wheel c is the deepest that 3 of the tens
ratchet wheel is shallower and that of the months ratchet wheel is
still shallower whilst the tens ratchet wheel d³ is provided with one notch d³
adjacent to each group of three figures and the teeth of the drivers c* d*e* f*
are of differential depths corresponding with the notches.
As a modification of this device the notches
might be of one uniform
depth and the teeth of the drivers e* d* e* of differential depth.
The notches are so arranged that each time the units wheel c comes round
to a position to print "9" the tooth of its driver e* will drop into its notch and
permit the driver of the tens wheel d to engage the teeth of its ratchet wheel d²
and at the next operation which brings the "0" of the units wheel into position
advance said wheel the distance of one tooth and thus bring the figure "1" of
the tens wheel & into position alongside the "0" of the units wheel e after which
the driver c by reason of its rounded end acting in conjunction with the inclined
back of the notch will ride out of said notch and occupy its normal position.
These progressive intermittent changes continue to be made until the number
of days in the month has been recorded at which time the notches and of
the units and tens wheels are in alignment when the teeth of both the units and
tens drivers c✶ and will drop into their respective notches c and d thus per-
mitting the driver e* of the months wheel e to come into engagement with the
teeth of its rachet wheel e2 when the months wheel e will be advanced the distance
of one tooth of its ratchet wheel thereby changing the month to that next in
order after which the drivers c* d* will retire to their normal positions.
When the months type wheelf has described a complete revolution and the
year has run out the notches ³ ³ ³ of the ratchet wheels 2 d2e2 will be in align-
ment when the drivers *d* e* of the units tens and months wheels c, d, e, will
drop into their respective notches c³, d³, e³, thereby permitting the driver f* of the
years wheelf to engage the teeth of its ratchet wheel when at the next opera-
tion said wheel will be advanced by its driver the distance of one tooth of its ratchet
wheel thus changing the number of the year after which the respective
drivers
fwill be restored to their normal positions as herein before
c*
described.
d*
The tens wheel d is fed forward the distance of one tooth of its ratchet wheel d³
at each revolution of the units wheel c and after one group of numerals of the tens
wheel is finished with on the completion of the month the next group is brought
into position by working the change lever h³ until the first numeral of that
group appears.
It will be understood that variations in the number of days of the month will
be compensated for by working the units and tens wheel c and d round to the
required positions by means of the change lever h³.

page_text: Instead of forming the tens wheel d with three groups of numerals it may
be provided for example with two such groups but the former is the preferred
arrangement.
:
By the means herein before described the required changes may be effected by
the simple depression each day of the hand or change lever without the neces-
sity for the laborious operations of unclamping, setting and again fixing the type
wheels as heretofore.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed I declare that what
I claim is:
1/ A dating stamp comprising a frame, a vertically moveable carriage within
the frame; means for depressing and raising the carriage; a series of type wheels
loosely mounted on an axis within said carriage said type wheels consisting of a
units wheel, a tens wheel, a inonths wheel and a years wheel, means for auto-
matically inking the type, a ratchet wheel fixed with each type wheel, a clawker
or driver engaging each ratchet wheel said drivers being mounted in one cominon
holder and formed with heads claws or teeth of differential size; corresponding
deep notches of dicerential size in the ratchet wheels, a spring for holding the
drivers in engagement with the ratchet wheels, a hand lever pivotally connected
with the holder for actuating the drivers and means for preventing the over
driving and turning back of the type wheels all arranged and operating substan-
tially as herein shown and described and for the purpose stated.
27 A dating stamp comprising a frame, a vertically moveable carriage within
the frame, means for depressing and raising the carriage; a series of type wheels
loosely mounted on an axis within the carriage said wheels consisting of a units
-wheel-bearing the numerals "0" to "9" around its periphery. A tens wheel
placed outside the units wheel and bearing around its periphery several groups of
numerals each consisting of "1" to "3" a months wheel located at the side of the
units wheel and bearing around but transversely of its periphery the contracted
names of the months, a years wheel located at the side of the months wheel and
similarly bearing the numbers of the years, means for automatically inking-the
type, means for automatically advancing the type wheels in the required manner
and means for preventing the overdriving or turning back of the type wheels
all arranged and operating in manner substantially as herein shown and described
and for the purpose stated.
Dotal
1
n
WHITE & WOODINGTON,
Birkbeck Bank Chambers, Southampton Buildings, London, Agents.