Improvements in Keyless Watches and other Time Pieces for the Prevention of Over Winding.
Year: 1889

page_text: Date of Application, 7th Mar.; 1889
Specification Accepted, 13th Apr., 1889
COMPLETE SPECIFICATION.
Improvements in Keyless Watches and other Time Pieces for the
Prevention of Over Winding.
We, ANTON KULICSKA and NICOLAUS VON GÉBAY both of Buda Pesth in the
Empire of Austro-Hungary 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 :-
:-
This invention relates to timepieces, principally to keyless watches and its object is
to prevent over winding and consequent breaking of the main spring or winding
contrivance; and it consists in a device in connection with the spring and winding
contrivance whereby when the spring is sufficiently wound the device is operated to
disengage the winder.
Reference being made to the annexed drawing-Fig. 1 is a plan view of part of the
works of a stem winding watch showing the invented device and a sufficient part of
the works to illustrate its connection therewith and mode of operation-Fig. 2 is a
sectional view of part of the device.
In carrying the invention into practice; to the inside of the wall of the spring
barrel N is fixed a length of spring F of greater strength than the main spring itself
The latter is fastened to the arbor P at one end and hooked or otherwise fastened at
the other end to the free end of the spring F-The spring F is likewise connected to a
sliding plate A or bar guided on the lid of the spring barrel N, so that the movement
of the said plate may be controlled and effected by the spring F--The plate a is
guided on the lid of the barrel by the screw pin S which is screwed into the barrel
and passes through the slot S₁ in the plate as shown-The plate a extends to a
sufficient distance, preferably to encircle the arbor P, the latter passing through an
opening S² in the plate-Near to this opening the plate is provided with a segment or
segments of an inclined or conically faced ring U₁ as shown to bear against a corre-
sponding face U on a annulus E loosely surrounding the arbor P; this conical face U
being the inner wall of an annular slot V on the lower face or end of the ring E-This
contrivance causes the ring E to be lifted by the movement of the sliding plate A
towards the arbor P, i.e. when the tension of the wound main spring is sufficient to

page_text: draw inwards towards the arbor P the end of the spring F-Upon the outer or upper
face of the ring E is a conical face E' on which in a similar manner the bevelled end
of the rod D bears so that the lifting of the ring E is transformed into an outward or
radial movement of the bar D, the latter being guided by the bridge G and the
pins B B on said bridge-By the contrivance heretofore described the radial movement
of the plate S which may be from any direction to the arbor P according to the
position of the spring barrel, is transformed into an opposite and corresponding
movement in a constant direction. This movement is then transferred to the clutch on
the winding arbor by suitable levers, such as the lever C pivoted at to and controlling
the usual band setting lever K, in such a manner as to set the arbor 0 out of
engagement with the winding gear without, of course, moving the clutch sufficiently
to bring the arbor O into engagement with the hand setting gear.
The spring which presses the arm K upward, or any other special spring suitable
placed, will tend to throw back the parts so as to press the rod D towards the arbor P
and consequently when the disturbing pressure of the spring F ceases the ring E will
he pressed down by the rod D and the plate A, ring E, rod D and other parts will
resume eventually their previous position, and the watch can be again wound.
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 ;-
1.) In time pieces an automatic contrivance for prevention of overwinding, in which
the tension of the main spring due to winding is caused to operate the disengagement
of a clutch by which the winding gear is operated by the equivalent of the key.
2.) In time pieces, an automatic contrivance for prevention of over winding in
which the tension of the main spring due to winding is caused to operate a sliding
plate A, to move thereby a ring E, and a bar D substantially as described for the
purpose set forth.
3.) In time pieces the combination with the main spring, of a length of stronger
spring F, a sliding plate A connected to said spring F, an annulus E, on the arbor P
having annular conical faces U. E and bar D, constructed to operate substantially as
and for the purpose set forth.
4.) In stem winding watches the combination with the stem winder arbor 0, cluich
body and lever K of known construction and purpose; of the lever Cand arm D
caused, by the tension of the main spring upon winding, to deffect said lever K
substantially in the manner and for the purpose described.
T
11113
LALLA MIEN RO UVRICONA
HERBERT & Co.,
18, Buckingham Street. Strand, London, W.C.,
Agents to Applicant.