Improvements in Repeating Clocks and Watches
Year: 1895

page_text: Date of Application 6th May, 1895-Accepted, 10th Aug, 1805
COMPLETE SPECIFICATION
Improvements in Repeating Clocks and Watches
I, GEORGE FREDERICK REDFFRY, of the Firm of G F Redfern & Co, The
General Patent Office, No 4, South Street, Finsbury, in the County of London,
Patent Agents, do hereby declare the nature of this invention (a communication
to me by La Sociéte Le Coultre & Cie, of Sentier (Vaud) in the Republic of
Switzerland, Manufacturers,) 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 object improvements in repeating mechanism for carriage
or portable clocks and watches in which the repeating mechanism is caused to
operate by pushing in the pendant or stem
The mechanism comprises a large pivotted rack gearing at one part with a pinion
of the fusee of the repetition mechanism and bearing at another part against
projection, such as a pin, on a sliding piece adapted to be operated by pushing a
suitable projecting member, such as a special knob in the case of a portable clock
or the movable stem in the case of a watch
The rack is advantageously provided with a circular notch in which is located
the projection of the sliding piece for the purpose of diminishing the friction
between these parts Further, the sliding piece is advantageously formed of a
T-shape the vertical arm of which receives the pressure from the part which
projects from the clock or watch
In cases where the mechanism is applied to a key less watch set by the pendant
the outer end of the winding rod has a square which enters a socket screwed to the
knob and located in the stem not integral with the case, the said socket being
provided at its inner end with a flange adapted on the one hand to hold it to the
watch and to maintain the pendant between it and the knob and on the other hand
to act on the herein before described sliding piece so that by pushing the knob and
the pendant towards the interior of the watch the spring connected to the fusee of
the repetition can be wound up The fusee of the repetition is also provided with
a pimon engaging with rack which by means of the hour snail determines the
number of strokes to be given by the hour hammer
In order to enable the invention to be fully understood I will describe the same
by reference to the accompanying drawing, in which
Figure 1 is a part sectional elevation showing the improved repeating mechanism
applied to a keyless watch
F
igure 2 is an elevation of the winding knob
Figures 3 ard 4 are respectively a plan and an elevation of the socket, and,
Figures and 6 are ie pectively a front and a side elevation of the sliding piece
adapted to be operated by the said socket
Figure 7 is a longitudinal section of the pendant
Figure 8 is a section on the line X X, Figure 7, and
Figure 9 is a section on the line 4 4, Figure
A is the knob formed with an internal sciew thread a, into which is screwed
the solid screw threaded end b of a socket B located in the pendant of the witch
The pendant engages in a socket c soldered to the watch cise and is connected
to the ring D it is held in position by the knob A. and by the flange
socket B which bears against the inner suifice of the watch case and holds the
said socket in position
The reces e in the socket B is square in cross section and
ot the

page_text: receives the end of the winding rod E so that by turning the knob A which carries
the knob F and
with it the socket B the watch can be wound up or the hands set
the lever-spring I may be utilized for setting the hands by bringing the sliding set
hands crown wheel finto engagement with the pinion g
3
L is a rack pivotted in the case at o the teeth of which gear with a pinion M
fixed on the fusee p of the repetition mechanism This rack L is provided with
a notch in which is located the pin of T-shaped piece H (shewn in Figures ɔ
and 6) the vertical arm d' of which bears against the flange d of the socket B
the other two aims of the piece H are thicker than the vertical arın d¹ and are
located in a slot e in the casing
Upon the axis p is fixed a second pinion S gearing with a rack V which carries
an armadapted to come into contact with the hour snail N to determine the
number of hours to be struck when, in consequence of the movement of the rack L
in the direction of the arrow x, the rach V is caused to move in the direction of
the arrow y, pivotting at
O is the star wheel of the hour snail combined with a spring jumper T operated
by a projection on the quarter snail in the usual manner
Kis the hour piece fixed to the fusee p and comprising a ratchet toothed sector
which upon its rotation in the direction of the arrow v causes the click o¹ of the
hammer to strike the hours R is the quarter piece pivotted at s held by a
spring m and having an arm t for determining by means of the quarter snail the
rumber of strokes to be given
P
This piece R is adapted to be carried along by a finger r of the fusee at the
moment it should sound the quarters and it is provided as in the ordinary manner
with ratchet teeth u u', adapted to operate the chicks o³, o³ of the quarter
hammers
The pawls o¹, 02, 03 are combined with keys spings and other usual accessories
in order that they may only be actuated by the parts K and R when these paits
arc operated by the spring, previously wound up for the repeating operation,
connected to the axis p A washer placed upon this axis, and not shewn in the
drawing, covers the pinion M
The operation of the herein before described repeating mechanism is
follows
IS
If the knob A, the pendant C and the socket B are pushed inwards, as indicated
by the atow in Figure 1, the flange d of the plug B pushes the sliding piece H
towards the inter or of the watch and this piece H having its pin n bearing in the
notch of the rack L will carry forward this latter and cause it to turn on its
pivot at o in the direction of the arrow r, thereby turning the pinions M and Sas
well is the axis p in the direction of the arrow v consequently to wind up the sping
connected to the axis p, turn the sector V in the direction of the arrow y and cause
its aim to determine upon the snail N the hours to be struck, the movement of
the fusee having also for object to move the hour piece and allow the spring m,
in consequence of the finger r partaking of this movement of p, to cause the
quaiter piece to turn arounds in the direction indicated by the arrow sin
order to cause its arm t to determine upon the quarter snail the quarters to be
struck
P
As soon as pressure is removed from the knob A and the pendant C the sprin
connected to the axis p will cause the latter to tuin together with the pinions M
and S in the opposite direction to the arrow v, the effect of which is to also turn
the rack V and the rack L respectively in opposite directions to those indicated
by the allows a and y this movement of the sector L having also for object to
bing back the piece H and the parts B, C, A to the initial positions by moving
them in a direction opposite to that of the arrow z
In this movement of the
fusce R
in the opposite direction to the allow the teeth K pass in front of the
click on the direction to cause the hours to be sounded by the hammer combined
with this chick and as soon as the hours shall have been stuck the finger r will

page_text: carry along the quarter piece R in the opposite direction to the arrow, so
that its teeth will actuate the pawls o o³ combined with the two hammers for
striking the quarters
From this arrangement it will be seen that it is the spring connected to the
fuse which also brings back the piece H and the pendant to their initial positions
but it is evident that if necessary a special spring could be employed for this
purpose acting upon the piece D or on the pendant
In some cases the rack V may be dispensed with and the mechanism arranged
in such a manner that the sector L may determine on the hour snail the number of
hours to be struck
It will be understood that when the mechanism is to be applied to a carriage of
portable cloch, a special knob is employed for operating the sector L The
external shape of the pendant C can be round, oval, etc when the shape is round
the pendant can receive a movement of rotation
,
As spring-lid watches provided with the mechanism herein before described
cannot be opened by the pendant, a special pusher 9 is provided which allows of
pressure being applied to the secret pring
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 Repenting mechanism for carriage or portable clocks and keyless watches in
which a repeating mechanism is caused to operate by pushing in the stem, the sad
mechanism comprising a laige pivotted rack gearing with the pinion of the fusee
of the repetition mechanism and bearing at another part against a projection of
sliding piece capable of being actuated by pushing a suitable knob or the like
projecting outside the clock or watch for the purpose of winding up the fusee sprin
of the repetition mechanism by the pushing in of the said knob or the like
substantially as herein before described
2 In repeating mechanism of the kind described in Claim 1 the large pivotted
rack L which gears with the pinion M fixed to the fusee and is provided with
circular notch' in which is located a projection, such for example as a pin fiom
the sliding piece for the purpose of reducing the friction between this latter and
the sector, substantially as herein before described
3 In repeating mechanism of the kind described in Claim 1 a sliding piece
consisting of a piece H of T-shape the vertical member of which receives the
pressure of the push-knob or piece which projects outside the watch or clock,
substantially as hei ein before described
4 In repeating mechanism of the kind described in Claim 1, the rack V provided
with an arm intended to determine upon the hour snail the hours to be sounded,
the said rack gearing with the pinion S fixed upon the pin on M, substantially as
hercin before described
In a repeating mechanism for watches in which the operation of the repeating
mechanism is effected by the pendant, an arrangement which allows of operating
the repeating mechanism by a pressure upon the pendant and at the same time
allows of winding up the watch and of setting it to the hour by the pendant, the
said arrangement consisting essentially of socket B of cylindrical shape on its
exterior screwed to the knob A and provided with a pendant C, not integral with
the case of the watch, the said socket B being also provided at its inner extremity
with a flanged which holds it against the watch and having an axial recess e,
square in cross section, to receive the square end of the winding rod so that by
turning the knob the socket B turns the winding rod for winding the watch and
Betting it to the hour, whilst on exerting a pressure upon the knob and the pendant
they are caused to move towards the centre of the watch and act upon the parts to
wind up the motor spring of the repetition mechanism, substantially as hereinbefore
described

page_text: 6 The improved repeating mechanism for carriage or portable clocks and
keyless watches herembefore described and represented in the accompanying
drawing
Deted the 6th day of May 1895
G F REDFERN & Co,
4, South Street Finsbury, London, Agents for the Applicant