An Improved Motive Device for Watches.
Year: 1894

page_text: Date of Application, 17th May, 1894
Complete Specification Left, 14th Feb., 1895-Accepted, 11th May, 1895
An Improved Motive Device for Watches.
We, CHARLES MORLET and PROSPER NORDMANN, both of 42 Rue Neuve
du Temple Geneva, in the Republic of Switzerland, Watch Manufacturers, do
hereby declare the nature of this invention to be as follows:
1
The improved motive device which forms the object of the invention is intended.
to enable a motive-spring of ordinary dimensions to be combined with a watch-
work of reduced height, that is to say, with a so-called extra flat watch. The
improved arrangement of motive device may however be applied to other
combinations of watches.
To the barrel is fixed a socket intended to keep the balance of the barrel upon
the barrel-arbor which does not pass through a barrel-cover, as is the case in the
usual barrels, our barrel not being provided with a cover.
The said socket may be riveted to the barrel or it may be made in one piece
with the latter. The barrel-arbor is provided with a collar and pivots the one of
which is located in the plate and the other in the bridge.
The winding-up ratchet is provided with a socket which may be formed in one
piece with it or be screwed, riveted, or fixed to it in any other suitable way. The
Bocket bears the hook to which is fixed the inner end of the motive spring. The
said ratchet turns upon the pivot of the arbor when the watch is being wound
up, and its socket acts as a core the motive-spring rolling itself round the said
socket.
The outer end of the spring is fixed to the barrel, the socket of which is adjusted
to a slightly conical part of the barrel. The edge of the socket of the ratchet does
not reach the bottom of the barrel, so that the latter is not in contact with the
said socket. The socket of the barrel is secured between the bottom of the socket
of the ratchet and the collar of the arbor with a little space left to allow the barrel
to have sufficient play.
We, CHARLES MORLET and PROSPER NORDMANN, both of 42 Rue Neuve
du Temple Geneva, in the Kingdom of Switzerland, Watch Manufacturers, 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 improved motive device which forms the subject of the present invention is
intended to enable a motive-spring of ordinary dimensions to be combined with a
watch-work of reduced thickness, that is to say with a so-called extra-flat watch.
The improved arrangement of motive-device may however be applied to other
combinations of watches.

page_text: Figures is a cross section drawn to an exaggerated scale, of a motive device
constructed according to the present invention.
Figure 2 is a plan of the same.
Figure 3 is a cross section of the barrel alone.
Figure 4 is a plan and
Figure 5 a cross-section of the winding-up wheel.
The same letters of reference refer to the same parts in all the figures.
To the barrel A is fixed a socket A¹ intended to keep the balance of the barrel
upon the barrel arbor B which does not pass through a barrel-cover, as is the
case in the usual barrels, our barrel not being provided with a cover.
The said socket A' may be riveted to the barrel A or it may be made in one
piece with the latter. The barrel-arbor B is provided with a collar B₁ and
pivots 6 and 6 the one of which is located in the plate P and the other in the
bridge Pi
The winding-up wheel C is provided with a socket C' which may be formed in
one piece with it or be screwed, riveted, or fixed to it in any other suitable way.
The socket C¹ is provided with a hook e to which is fixed the inner end of the motive
spring D the said wheel C turns upon the pivot b¹ of the arbor B when the watch
is being wound up, and its socket acts as à core the motive-spring D rolling itself
round the said socket.
The outer end of the spring D is fixed to the barrel A, the socket A' of which
is adjusted to a slightly conical part of the barrel-arbor B.
The edge of the socket C of the wheel C does not reach the bottom of the
barrel A, so that the latter is not in contact with the said socket. The socket A'
of the barrel is secured between the bottom of the socket C¹ of the wheel C and
the collar B of the arbor B with a small space left to allow the barrel to have
sufficient play.
Instead of having the socket C fixed to the ratchet C those two pieces may be
provided each with a tapered hole and screwed upon a tapered portion of the
pivot b¹.
In this case the barrel-arbor B¹ rotates with the socket C and wheel C and the
barrel A rotates upon the said arbor B when acted upon by the mainspring D.
The watch may be wound by means of a suitable gear wheel or a combination of
gear wheela engaging the teeth of the wheel C.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
1st. A motive device for watches, characterized by a barrel A having a socket A¹
forming one with the said barrel, secured or adapted to rotate upon an arbor B
and projecting into the space in the core, the barrel-arbor being provided with
pivots b¹ and 6 substantially as described.
2nd. A motive-device for watches, characterized by a hollow core C¹ surrounding
the socket A and carrying a suitable projection c so as to hold the motive spring Ď
substantially as described.
3rd. A motive-device for watches characterized by a winding-up wheel C secured
to the hollow core C¹ or screwed with the latter upon a tapered portion of the pivot b
substantially as described.
Dated this 14th day of February 1890.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicants.