Year: 1887

page_text: Date of Application, 10th Sept., 1887
Specification Accepted, 1st Nov., 1887
I GEORG REIMANN Manufacturer of Schmidstrasse 32 Berlin in the Kingdom of
Prussia and German Empire do hereby declare the nature of this Invention and in
what manner the same is to be performed to be particularly described and ascer-
tained in and by the following statement that is to say :—
The object of the Invention hereinafter described is a Calendar movement or date
indicator mechanism whereby Clocks or timepieces of all descriptions are enabled to
indicate automatically the days of the week and month as hereinafter explained.
This movement or mechanism is applicable to or may be combined with wall Clocks
or with clocks on pedestals with Clocks driven by weights or clocks driven by springs.
The essential feature of the invention consists in providing a hand or pointer or
hands or pointers which is or are caused to travel with a continuous or intermittent
motion over two straight or curved scales provided with divisions corresponding to
the days of the month and of the week in proper order and which may be arranged
facing one another.
And in order that the said Invention may be fully understood I shall now proceed
more particularly to describe the same and for that purpose shall refer to the several
figures on the annexed sheets of drawings the same letters of reference indicating
corresponding parts in all the figures.
Figures I and II of the accompanying drawings represent respectively a front
elevation and transverse section of an eight day clock provided with an automatic
calendar or date indicator according to this Invention.
The going works of this clock are driven by a weight p to which there is connected
a double acting hand or pointer i so that in a given time the said hand or pointer
descends a given distance with the weight p. This downward motion is measured
upon two graduated scales arranged one on the right and one on the left of the hand i.
To make the division or graduations on these scales in the case of an eight day clock
for example the distance traversed by the weight in 24 x 7 hours is marked off and
this distance is then divided into 7 equal parts so that in every 24 hours the hand
traverses exactly one seventh of the total distance. One of the scales marks the days
of the week and the other the days of the month from the 1st to the 31st. This
latter scale is so arranged that only so many of the days of the month as correspond
with the days in one week are visible at a time. In order to bring the proper succession

page_text: of numbers representing the days of the month opposite to the corresponding days
of the week the scale representing the days of the month is made moveable. With
this object the ends of the scale are arranged to be alternately rolled or wound upon
and unrolled or unwound from one of two rollers r. To obtain an accurate adjustment
of the hand i when winding up the clock the uppermost division (t) in the scale for
the days of the week is subdivided to indicate 12 x 2 hours as indicated at t figure I.
The moveability of the scale for the days of the month enables it to be suitably
adjusted for the transition from one month to another. In this arrangement the hand
or pointer moves with a continuous not an intermittent motion.
i
Figures III and IV represent in front elevation and transverse section respectively
a clock driven by a spring and provided with an automatic calendar movement
according to this Invention. The spring barrel A of this clock is provided with a
ratchet wheel B as shewn more clearly in figure V and pawl C is maintained in
contact with its teeth by a spring E. This pawl is attached to a grooved pulley D
which is thus caused to rotate with the spring barrel when the latter rotates in the
direction for driving the clock train but at the same time can be turned upon the said
barrel by lifting the pawl C. A cord F is passed round this pulley being attached at
one extremity to the clock case and making several turns upon the pulley D. The
other extremity of the cord is connected to a small weight G a bight of the cord
being passed under a pulley H loaded with a weight J and carrying the hand or
pointer K. This hand travels over scales arranged as hereinbefore described with
reference to figures I and II. The weight G balances the pulley H with its weight J
and hand K so that they offer no appreciable resistance to the movement. The
automatic movement of the hand K over the days of the week and month results from
the rotation of the spring barrel which lets down the bight of cord supporting the
pulley H and thereby lowers the hand K. The accurate adjustment of the hand K
relatively to the scale is obtained by slightly raising or lowering the weight G so as
to move the hand K upwards or downwards.
Figures VI and VII represent in front elevation and transverse section respectively
the Invention as applied to a clock requiring to be wound up once a month only.
In this case the scale representing the days of the week is made the same length
or to comprise the same number of divisions as there are days in a month and
one of the scales (say the scale representing the days of the month for example)
is made adjustable and of such a length as to enable it to be properly adjusted
relatively to the other scale (days of the week).
The Calendar movement may be so arranged that in the case of clocks driven
by weights the cord of the weight passes over pulleys which either cause the hands
to travel with a rotary motion over stationary circular or curved scales or as indicated
in figures VIII and IX cause circular or curved scales to pass hefore stationary
openings or indicators.
The scales and hands are adjustable and the scales are
provided with indications of the days of the week and of the month which are
successively made visible being presented before suitable openings in the case.
A similar arrangement may be obtained with straight scales such scales being
connected to the clock weight and caused to move within the case in such a manner
as to shew the days of the week and month successively and in their proper order
through suitable openings in the front of the Case as indicated in figures X and XI
or the scales themselves may be stationary and be arranged behind a screen provided
with openings and caused to move downwards with the Clock weight so as to
uncover the days of the week and month on the said scales in their proper order.
This arrangement is illustrated in figures XII and XIII.
The hand or pointer may be caused to move intermittently over the scales by
the employment of suitable intermediate mechanism shifting it at intervals of
24 hours. An arrangement of this description is illustrated in figures XIV to XIX
for clocks driven by springs and in figures XX to XXIII for clocks driven by
weights.
According to the first of these two arrangements figures XIV to XIX two
scales b and c wound upon rollers b¹ and c¹ are arranged underneath the clock dial,

page_text: &
In a long slot or opening d in the case between the two scales works a loaded hand
or pointer carried by a weight E attached to a chain F wound upon a drum or barrel g
connected to a stop wheel h (figure XVI XVIII and XIX) provided with notches h
engaging with a tooth i on one end of a lever ² pivoted at . This lever is provided
at the other end with an incline k figure XVI or with a jointed arm k¹ figures XVIII
and XIX which is situated at the side of the hour wheel land is pressed upwards by
spring m. The wheel is provided with a pin or projection n which at certain
intervals comes in contact with and depresses the incline k figure XVI (or arm kl
figures XVIII and XIX) the lever thereby disengaging the tooth i on the other end
of this lever from the notch h¹ and releasing the wheel which owing to the weight E
attached to the hand describes a portion of a revolution with the drum g until the tooth i
engages with the next notch h¹ and stops the wheel. According to this arrangement
the hand is moved once in every 12 hours but by introducing a suitable second wheel
the hand may be caused to move every 24 hours only if desired.
To obtain an intermittent motion of the hand with a clock driven by a weight the
arrangements illustrated in figures XX to XXIII are employed. Figure XX is a
front elevation figure XXI a side view partly in section of the general arrangement
and figures XXII and XXIII represent respectively a front view and a plan partly in
section shewing details of the same. Underneath the clock dial A' an opening is
formed in the clock case B¹ which can be closed by a glass disc or plate. Behind this
glass the days of the week and month are arranged upon scales on loose bands D¹ as
hereinbefore described between which slides an index or pointer H¹ carried by an
arm H attached to a sleeve or eye J¹ which is free to slide upon a rod K¹ connected
to the going weight of the clock. To the upper side of the eye J¹ there is attached
a blade spring L whose extremities bear against projections or teeth M on two
vertical bars N'. The upper end of the rod K¹ is connected to a plate 01 whereby it
is suspended from a pulley working on the driving cord Q. The teeth M³ are so
arranged that the index H' is stopped half way between any two dividing lines or
graduations on the scales (figure XX) and remains in this position until the clock weight
connected to the rod K' has descended so far, leaving the pointer suspended by the
spring L (whose extremities rest on the teeth M¹) that the weight of the sleeve or
eye
JY
causes the spring L' to bend to such an extent that its ends slip off the said
teeth whereupon the pointer H¹ suddenly drops to the next lower division on the scale
where it remains suspended partly on the weight and partly on the two next teeth M¹
until it is time for it to advance to the next division the pointer being thus alternately
suspended by the spring L' and allowed to drop as hereinbefore described until it
reaches the bottom of the scales.
To obtain an accurate adjustment on winding up the clock one of the divisions in
the scale is divided into 12 x 2 hours by means of which the pointer can be suitably
adjusted.
Suitable devices for indicating the names of the months and the year can be
arranged in the lower part of the case. The modifications hereinbefore described for
giving a continuous motion to the indicator or index with reference to figures VI
to XII may be combined with mechanism for imparting an intermittent motion to the
index or pointer and the arrangements described in combination with 8 day clocks may
be combined with clocks requiring winding once a month only and vice versa.
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 :-
First. An automatic Calendar movement for clocks consisting of two hands or
pointers having a continuous or an intermittent motion imparted to them by the
works of the clock and travelling over two graduated scales arranged on opposite
sides of such hands or pointers and upon which the days of the week and the days
of the month or date are marked in proper order all substantially as hereinbefore
described and illustrated in the accompanying drawings.
Second. In clocks driven by weights the arrangement of the hand or pointer i
on the weight p in combination with the scales for the days of the week and month

page_text: the scale shewing the days of the month being adjustable relatively to the scale
shewing the days of the week and the hand index or pointer of the Calendar
having a continuous motion imparted to it substantially as hereinbefore described
with reference to figures I and II of the accompanying drawings.
Third. In clocks driven by springs the combination of the pulley D connected
with the spring barrel A by the ratchet wheel B and pawl C with the cord F
weight G and the hand K carried by the pulley H whereby a continuous motion is
imparted to the hand or pointer in combination with the day of the week scale
and the day of the month scale the latter being adjustable relatively to the former
all substantially as hereinbefore described with reference to figures III to V and
VI, VII of the accompanying drawings.
Fourth. In clocks driven by springs and for obtaining an intermittent motion
of the Calendar mechanism the arrangement of the weight E carrying the pointer
suspended from the drum or barrel 9 connected with the notched stop wheel h in com-
bination with the locking lever provided with an incline k or jointed arm k¹ and in
combination with the pin n on the wheel which describes one complete revolution
once in every 12 or every 24 hours substantially as herein before described and illustrated
in figures XIV to XIX of the accompanying drawings.
Fifth. In clocks driven by weights and for obtaining an intermittent motion of the
hand or pointer of the calendar mechanism the arrangement of the index H' carried
by the arm H2 provided with the sleeve or eye J¹ which slides on the rod K' connected
to the clock weight and is attached to a blade spring L' whose extremities rest upon
teeth M on vertical bars N' in such a manner that when the clock weight has descended
a certain distance the spring bends under the weight of the urm H2 and its
extremities escape from the teeth M so as to allow the pointer H¹ to drop from one
division of the scale to the division next below it substantially as hereinbefore
described with reference to figures XX to XXIII of the accompanying drawings.
Sixth. As modifications of the arrangements referred to in the preceding claim-
ing clauses the arrangements wherein the scales themselves receive motion from
the works of the clock and move relatively to a stationary index or to an orifice or
opening through which the required indications can be seen or wherein a screen
provided with such openings or orifices is caused by the clock work to move before
a stationary scale substantially as herein before described and illustrated in the
accompanying drawings.
D: 10th day Cantambar 1007