Improvement in Hand-setting-mechanism for Watches.
Year: 1892

page_text: Date of Application, 27th Aug., 1892
Complete Specification Left, 4th May, 1893-Accepted, 24th June, 1893
PROVISIONAL SPECIFICATION.
[Communicated from abroad by FAVRE BROTHERS, of Neuveville and Cormoret,
in the Republic of Switzerland, Watch Makers.]
Improvement in Hand-setting-mechanism for Watches.
1, 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:--
The invention consists of an improved hand-setting-mechanism in which the
hand-setting is put in action by traction applied to the stem. It includes a
device which replaces the stop usually employed in hand-setting devices to prevent
the involuntary withdrawal of the stem out of the watch, and this device is
nevertheless so arranged that the stem may be withdrawn without dismounting
the mechanism and without using a turnscrew.
The stem is provided with a groove in which engages one arm of a rocking-
lever the other arm of which is provided with a projection extending through
an opening of the plate and which is intended to act upon the hand-setting-lever
by means of a spring acting as usual upon the sliding-pinion. A safety-latch
acted upon by a spring prevents the stem from coming back too easily in its
winding-up position.
•
The rocking-lever arranged in a recess in the plate has but one pivot placed
on the side of the barrel-bridge, the lower face of the rocking lever bearing with
friction in the recess of the plate. The said pivot extends through a heart-
shaped opening of the barrel-bridge, somewhat beyond the surface of this latter.
When this pivot is lodged in the upright portion of the heart the rocking-lever
is in the position ready to act upon the hand-setting as above mentioned, when
the stem is drawn outside, and at the same time preventing the said stem from
being taken entirely out of the watch.
On the contrary, when the pivot is pushed back by hand, to the left side of the
heart the arm of the rocking lever is drawn out of the groove of the stem so that
the latter may be removed from the watch without unscrewing anything whatever
in the mechanism.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvement in Hand-setting-mechanism for Watches.
1, 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 per-
formed, to be particularly described and ascertained in and by the following
statement:
The invention consists of an improved hand-setting-mechanism for watches in
which the said mechanism is put in action by end wise movement of the stem.
The said invention comprises a device which is adapted to replace the stop
usually employed in hand-setting devices to prevent the involuntary withdrawal of
the stem from the watch, the said device being moreover so arranged that the
stem may be withdrawn without dismounting the mechanism and without the use of
a. turnscrew.

page_text: In the accompanying drawings
Figure 1 is a side elevation of a hand-setting-mechanism as seen when the dial
of the watch is removed.
Figure 2 is a similar view of the hand-setting-mechanism showing the barrel-
bridge removed.
Figure 3 is a view with the barrel-bridge and the winding up ratchets in their
respective places and
Figures 4 and 5 show modifications of the invention.
The stem A is provided with a groove or reduced portion a in which engages one
arm of a rocking-lever B (Figure 2) the other arm of which is provided with a
projection extending through an opening p of the plate P and which is intended
to act upon the hand-setting-lever M by means of a spring m acting as usual upon
the sliding-pinion N (Figure 1). A safety-latch L which is acted upon by a
spring by taking the position shown in Figure 2 prevents the stem from coming
back too casily to its winding position.
The rocking-lever B is arranged in a recess in the plate P and is pivoted at C to
the side of the barrel-bridge D, the lower face of the rocking-lever bearing against
the edge of the recess of the plate. The said pivot C extends through a slot or
opening in the barrel-bridge D, somewhat beyond the surface of this latter.
When this pivot is situated in the upright portion of the slot or opening, as in
Figure 3, the rocking lever B is in the position indicated in Figure 2, that is to
say, ready to act upon the hand-setting device as above mentioned when the stem A
is drawn outside, and at the same time preventing the said stem A from being
drawn entirely out of the watch.
On the contrary, when the pivot C is pushed back by hand to the left side of the
slot as indicated by the arrow in Figures 2 and 3, the arm of the rocking-lever B
is drawn out of the groove a of the stem A, so that the latter may be removed
from the watch without unscrewing anything whatever in the mechanism.
As shown in the Figures 4 and 5 the rocking-lever B may also be provided with
a second pivot C passing through the plate and acted upon by means of a spring X
causing the arm of said lever to engage the notch or reduced part a of the stem.
Hence if the pivot C is depressed as indicated by the arrow in Figure 5, the arm b
is disengaged from the notch a and the stem is free to be withdrawn. When the
said pivot C is again released the arm of the lever B automatically engages with
the notch a, under the action of the spring X.
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 correspondents, I declare that what I claim is :-
1. A hand-setting-mechanism comprising a rocking-lever B, the pivot Cof
which works in a slot or opening d of the bridge D substantially as above described
with reference to Figures 1 to 3 of the drawings for the purpose specified.
2. A hand-setting-mechanism consisting of a rocking lever B having an arm b
engaging in a notch a in the stem A, pivots C and a spring X acting on one of the
said pivots substantially as described with reference to Figures 4 and 5 of the
drawings and for the purpose specified.
Dated this 4th day of April 1893.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.