An Improvement to Prevent the Overwinding of Keyless Watches and to Maintain the Power During Winding.
Year: 1887

page_text: Date of Application, 1st Oct., 1887
Complete Specification Left, 2nd July, 1888
Complete Specification Accepted, 1st Oct., 1888
PROVISIONAL SPECIFICATION.
An Improvement to Prevent the Overwinding of Keyless Watches
and to Maintain the Power During Winding.
WILLIAM FALK of No 55 Cable Street in the parish of St. George in the East in
the County of Middlesex Watchmaker do hereby declare the nature of this invention
to be as follows:-
An improved Keyless Watch and relates to the prevention of overwinding and also
the impossibility of injury to the works during the act of winding and the invention
can be applied either to a Fusee or a going barrel movement and to more definitely
illustrate the objects of this invention that it renders unnecessary the use of the
maintaining power of works and also stop works as at present conspicuous.
The improvement is effected by an appliance so acting that when the winding is
completed, the winding parts are immediately disconnected from the pendant and do
not resume their position for about one hour after.
A short description of my new invention is this
I have a sliding piece which slides on the rail, under which (sliding piece) is fitted
the winding wheel of the watch. This sliding piece or bar during winding slides up
towards the button and makes contact with a wheel which is fixed on the winding
square. It is during this contact that the watch winds. When the watch is fully
wound, this sliding piece will slide down into its original position and of course lose its
contact with this wheel on the square so that after this the winding power of the
button will be nil.
Dated this First day of October 1887

page_text: and to Maintain the Power During Winding.
1 WILLIAM FALK of 55 Cable Street in the parish of St. Georges in the East in
the county of Middlesex Watch Maker 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, is to prevent the overwinding of keyless watches, and to maintain
the power, during winding. To carry this object out, and that it may be fully
understood, I append two sheets of drawings, I use a sliding bar (A) fitted to the
watch plate sliding upon a rail (S) Fig. 1, having a spring (N), which acts as a
maintainer. The sliding bar is raised by the force of winding, connecting the gear of
wheels (C) and (K), Fig. 1, and bringing the spring (N) against the teeth of the fusee
wheel (1) Fig. 3, which will then maintain during winding. When the watch is fully
wound, the lover (P) Fig. 2 is pressed down by the pin (R), Fig. 4; fixed in the
wheel () which is turned by the pinion (T) fitted on the fusee arbour. The small
lever (G) being upon the same arbour as the lever (P) Fig. 2 and 1. The lever (G)
will come against the tail of the piece (F) Fig. 3, lifting (F) away from the bar (A),
which will then slide down, disconnecting the gear between (C) and (K); then the
watch cannot be wound further.
Subtended is a complete description of the apparatus.
Fig. 1, (A) is a sliding bar which slides on a rail (S), fixed into the watch plate.
(B) is a wheel, in the top of the sliding bar (A), at right angles to the wheel (C),
and gears into it.
(C) is the main wheel with internal ratchet teeth and rotates in the sliding bar (A).
(D) is a disc sunk into the watch plate.
(E) is a pin in the disc (D) and fits between the teeth of the wheel (C).
(F) is a piece, pivoted at some distance from the centre of the disc (D), to lift the
bar (A) so as to bring the internal ratchet teeth of the wheel (C) to gear with the
wheel (K).
*
(G) is a small lever.
(H) is a stud fixed into the bar (A).
(K) is a ratchet wheel fitted on to the fusee arbour.
(L) is a winding stem.
(M) is a winding button.
(N) is a spring fitted into the bar (A) which during winding comes in contact with
the fusee wheel (I), acting as a maintainer.
(P) which is shewn in Fig. 2 is a lever; on the same arbour as the small lever (G),
fig. 1.
(T) is a pinion fitted on the fusee arbour to turn the up and down wheel (Y); in
which is fixed a pin (R) to act upon the lever (P).

page_text: (U) is a push piece, which slides the bar (A) down, so that the wheel (C), gear
into a wheel (V) at the centre of the watch, for shifting the hands.
(ZZZ) are three springs to keep the pieces in position.
Fig. 3 shews the position during winding. On turning the winding button (M) in
the direction of the arrow, causes the wheel (C) to rotate in the direction of the arrow,
taking the disc (D) in the direction of the arrow, causing the piece (F) to raise the
sliding bar, by pressing against the stud (H), then the internal ratchet of the
wheel (C) will gear with the ratchet (K) and the watch winds. When the watch is
fully wound the pin (R) Fig. 4 causes the lever (P) to take up the position indicated
by the dotted lines, Fig. 4; and because the small lever (G) is on the same axis as the
lever (P), that will also take up the new position indicated by the dotted lines
Fig. 3, pressing against the tail of the piece (F), causing it to leave the sliding
bar (A) Fig. 3. Which" the spring (2) will now cause to slide down, disconnecting
the gear between (K) and (C) and the watch cannot be wound further.
Fig. 5 shews the position during hand shifting, by pressing against the push
piece (U) it slides the bar down so that the wheel () gears into the wheel V.
Under the Fig. 1, sheet 1, is a side view of the sliding bar (A) shewing the
maintainer (N).
Having now particularly described and ascertained the nature of my said Inven-
tion, and in
what manner the same is to be performed I declare that what I
claim is