Improvements in Keyless Watches.
Year: 1890

page_text: Date of Application, 27th Aug., 1890
Complete Specification Left, 25th May, 1891-Accepted, 27th June, 1891
PROVISIONAL SPECIFICATION.
[Communicated from abroad by SOCIÉTÉ INDUSTRIELLE DE MOUTIER
GRANDVAL, Watch Manufacturers, at Moutier-Grandval, Canton of Berne,
Switzerland.]
Improvements in Keyless Watches.
I, HENRY HARRIS LAKE, of the firm of Haseltine, Lake & Co., Patent Agents,
45, Southampton Buildings in the County of Middlesex, do hereby declare the
nature of this invention to be as follows :--
This invention relates to keyless watches and consists in the means for securing
the winding stem of such watches; and the said invention consists more especially
in the kind of keyless watches in which the throwing in or out of action of the
hand-setting mechanism is produced by moving the stem outward or inward.
The stem is arranged in connection with a pivoted lever one arm of which is
provided with a projection engaging a circular notch of the said stem. The other
arm of the said pivoted lever is formed like a disc or pawl and bears upon the well
known oscillating bridge which carries a wheel which I will call the oscillating wheel,
for transmitting the rotation of the stem either to a wheel which causes the winding-up
of the mainspring, or to a wheel which causes the hands to be set. The engagement of
the oscillating wheel with the winding wheel or with the hand-setting wheel is
caused by oscillating the bridge which in turn is caused by oscillating the pivoted
lever about its pivot, that is to say: by moving the stem outward or inward.
The mechanism above described is a well known arrangement which I have
described so as to enable the invention to be readily understood.
According to the said invention the pivot of the said pivoted lever is prolonged
through the work, and the said pivot is provided with a circular notch with which
engages a forked spring, fixed to the plate of the watch.
The spring causes the pivot to reinain in its normal position in which the said
pivot is prominent upon the work. In this position of the pivot, the pivoted lever
is placed so that its projection engages in the notch of the stem. If a pressure is
exerted upon the pivot, the spring will be bent and the pivoted lever displaced so
as to disengage the projection from the notch. In this position of the pivoted lever
the stem may be withdrawn from the work. If the pivot is then released the parts
will fall back into their original positions. If the stem is to be again moved into
its place, it will be sufficient to press it on the top into its hole, the end of the same
being made conical. The said stem thereby causes the automatic lifting of the
pivoted lever into its inner position when the said stem is pressed on the top.
The pressure which is to be exerted upon the pivot for the purpose above
specified may be effected by means of a screw but it will generally be preferable to
arrange the pivot so as to be operated by hand.
Dated this 27th day of Aurust 1890.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Keyless Watches.
I, HENRY HARRIS LAKE, of the firm of Haseltine Lake & Co., Patent Agents,
45 Southampton Buildings, in the County of Middlesex, 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 keyless watches and consists in the means for securing
the winding stem of such watches and the said invention consists more especially in
D

page_text: the kind of keyless watches in which the throwing in or out of action of the
handsetting mechanism is produced by moving the stem outward or inward.
In the accompanying drawing, the figures of which are hereinafter referred to, I
have shown how my said invention may be conveniently and advantageously carried
into practice.
A is the stem and B a lever which is pivoted at D and one arm of which is
provided with a projection engaging a circular groove in the said stem A. The
other arm of the said pivoted lever B is formed like a click or pawl and bears upon
the well-known oscillating bridge E which carries a wheel F for transmitting the
rotation of the stem either to a wheel G, for effecting the winding-up of the
mainspring, or to a wheel H for setting the hands. The engagement of the wheel F
with either of the wheels G or H is caused by displacing the stem A. outward or
inward so as to move the end of the pivoted lever B into or out of engagement with
the bridge E to move the same in one or the other direction.
The mechanism above described is a well known arrangement which I have
described merely to enable the invention to be readily understood. The said
invention is illustrated in Figures 1 to 5. Figures 6 and 7 show modifications.
According to the said invention the pivot D of the above mentioned lever B is
prolonged through the work, as shown in Figures 3 and 4 and the said pivot is
provided with a circular notch d with which engages a forked spring C, fixed to
the plate of the watch.
F
The spring C causes the pivot D to remain in the position shown in Figure 4; in
which the said pivot D projects from the plate of the watch. In the position of
the pivot D the lever B is placed so that its projection b engages in the groove d
of the stem A. If a pressure is exerted upon the pivot D as shown in Figure 3,
the spring C will be bent and the pivoted lever B displaced so as to disengage the
projection from the groove d. In this position of the pivoted lever B the stem A.
may be withdrawn from the work. If the pivot D is then released the parts will
return to their original positions shown in Figure 4. If the stem A is to be again
moved into its place, it will be sufficient to press it on the top into its hole, the
end of the same being made conical, as shown in Figure 2. The said stem
thereby causes the automatic lifting of the pivoted lever B into the position shown
in Figure 3, when the said stem is pressed on the top.
The pressure which is to be exerted upon the pivot D for the purpose above
specified may be effected by means of a screw d' as shown in Figure 6 or of a
screw d as shown in Figure 7 but it will generally be preferable to arrange the
pivot as shown in Figures 2, 3 and 4, so as to be operated by hand.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, as communicated to
me by my foreign correspondent, I declare that what I claim is
In keyless watches, the combination of the lever B which is provided with a
-projection b adapted to engage with a groove a in the stem A, and which is intended
to cause the oscillation of the bridge E or its equivalent when the stem is moved
outward or inward, with a pivot D having a groove d in which engages a spring C
and projecting through the plate of the watch substantially as, and for the purpose,
specified.
Dated this 25th day of May 1891.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.