Improvements in or connected with Watches.
Year: 1893

page_text: Date of Application, 7th Feb., 1893
Complete Specification Left, 7th July, 1893-Accepted, 12th Aug., 1893
PROVISIONAL SPECIFICATION.
Improvements in or connected with Watches.
I, LEWIS DONNE of 6 Birchin Lane in the City of London, Watch Maker, do
ereby declare the nature of this invention to be as follows:-
The invention relates to improvements in or connected with watches.
In keyless or stem winding watches a spindle passes from the winder axially
hrough the stem to the winding mechanism, and it is consequently impossible solidly
o connect the bow with the stem in the old fashioned manner by means of a screw
assing horizontally therethrough, but the generally adopted method of connecting
he bow to the stem of a keyless or stem winding watch has been to snap the ends of
he bow into recesses formed in the stem.
This method of attaching the bow to the stem is sufficiently secure for ordinary
year, but not to prevent robbery, as it is perfectly easy, by giving a sharp twist to
the bow to disengage it from the stem of the watch, and this is a method commonly
adopted by pickpockets.
Now the object of my invention is, by a simple and inexpensive device, to attach
the bow to the stem in such manner that it will be impossible by the twisting
operation above referred to, to separate the parts.
For this purpose I form the stem with deep holes or recesses upon opposite sides
thereof, into which the ends of the bow snap in the ordinary manner, but according
to my present invention I form around the stem, an annular groove somewhat
shallower than the holes or recesses.
Upon the stem, with capability of turning, I mount a sleeve or collar provided
with holes therethrough corresponding with the deep recesses of the stem and which
admit of the passage therethrough of the ends of the bow, the sleeve being held in
position by the bow.
By this arrangement of parts, if the bow be violently twisted, the ends thereof
will simply jump out of the deep recesses and travel in the annular groove without
becoming detached from the stem, until they again come into alignment with the
deep recesses, when they will snap into their normal position.
The office of the sleeve is to cover the annular groove and to hold the ends
of the bow always at diametrically opposite points of the circumference of the
stem, and thereby to prevent the bow becoming disengaged from the same by a
lateral pull when the ends thereof have left the deep recesses, and have entered the
annular groove.
By these means it would be impossible to separate the bow from the stem by
twisting the same in the manner now successfully adopted by pickpockets.
The device herein before described is not only adapted to be applied to watches
in course of construction, but is also easily applicable at a small cost, to existing
watches.
Dated this 7th day of February
WHITE & WOODINGTON,
27, Southampton Buildings, London, Agents.

page_text: COMPLETE SPECIFICATION.
Improvements in or connected with Watches.
I, LEWIS DONNE of 6 Birchin Lane in the City of London 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 relates to improvements in or connected with watches.
In keyless or stem winding watches a spindle passes from the winder axially
through the stem to the winding mechanism and it is consequently impossible solidly
to connect the bow with the stem in the old fashioned manner by means of a screw
passing horizontally therethrough but the generally adopted method of connecting
the bow to the stem of a keyless or stem winding watch has been to snap the ends
of the bow into recesses formed in the stem.
This method of attaching the bow to the stem is sufficiently secure for ordinary
wear but not to prevent robbery as it is perfectly easy by giving a sharp twist to
the bow to disengage it from the stem of the watch and this is a method commonly
adopted by pickpockets.
Now the object of my invention is by a simple and inexpensive device to attach
the bow to the stem in such manner that it will be impossible by the twisting.
operation above referred to, to separate the parts.
For this purpose I form the stem with deep holes or recesses upon opposite sides
thereof into which the ends of the bow snap in the ordinary manner but according
to my present invention I form around the stem an annular groove somewhat
shallower than the holes or recesses.
Upon the stem with capability of turning I mount a sleeve or collar provided
with holes therethrough corresponding with the deep recesses of the stem and which
admit of the passage therethrough of the ends of the bow the sleeve being held in
position by the bow.
By this arrangement of parts if the bow be violently twisted the ends thereof will.
simply jump out of the deep recesses and travel in the annular groove without
becoming detached from the stem until they again come into alignment with the
deep recesses when they will snap into their normal position.
The office of the sleeve is to cover the annular groove and to hold the ends of
the bow always at diametrically opposite points of the circumference of the stem
and at the same time to prevent the bow becoming disengaged from the same by a
lateral pull when the ends thereof have left the deep recesses and have entered the
annular groove.
By these means it would be impossible to separate the bow from the stem by
twisting the same in the manner now successfully adopted by pickpockets.
The device herein before described is not only adapted to be applied to watches
in course of construction but is also easily applicable at a small cost to existing
watches.
And in order that the said invention may be more clearly understood and readily
carried into effect I will proceed aided by the accompanying drawings more fully to
describe the same.
DESCRIPTION OF THE DRAWINGS.
Figure 1 is a front elevation of a watch case having my improvements applied
thereto.
Figure 2 is a sectional elevation of the stem and connected parts but with the
winding spindle and winder removed.
Figure 3 is au elevation of the same separately.
Figure 4 is a vertical section thereof taken on the line 1-1 of Figure 3.

page_text: Figure 5 is an elevation of the sleeve or collar separately and
Figure 6 is a vertical section thereof taken on the line 2-2 of Figure 5.
Figure 7 is a similar view to Figure 2 but representing a slight modification.
Figure 8 is a similar view but with the bow removed.
Figure 9 a sectional elevation taken at right angles to Figure 8 and
Figure 10 is a horizontal section taken on the line 3-3 of Figure 9.
In the several figures in which like parts are indicated by similar letters of
reference Figures 2 to 10 are drawn to an enlarged scale with respect to Figure 1
for the sake of clearness.
Referring to Figures 1 to 6 a represents the case of the watch which is of the
ordinary kind and 6 represents the stem which is formed with deep holes or recesses b¹
on diametrically opposite sides thereof into which the reduced ends c¹ of the bow c
snap in the ordinary manner but according to the present invention around the stem b
is formed an annular groove 6' which is somewhat shallower than the holes or
recesses b¹.
Upon the stem b with capability of turning is mounted a sleeve or collar d
provided with holes d' therethrough corresponding with the deep recesses b₁ of
the stem band which holes d' admit of the passage therethrough of the ends c¹ of
the bow the sleeve d being held in position by the bow c aided by the winder e
which is secured to the spindle (not shown) in the customary manner.
C
By this arrangement of parts if the bow c be violently twisted the ends c¹
thereof will simply jump out of the deep recesses 6' of the stem 6 and travel in
the annular groove without becoming detached from the stem b until they again
come into alignment with the deep recesses 'when they will snap into their normal
position.
The office of the sleeve d is to cover the annular groove and to space or hold
the ends c¹ of the bow calways at diametrically opposite points of the circumference
of the stem 6 and at the same time to prevent the bow c becoming disengaged from
the same by a lateral pull when the ends c¹ thereof have left the deep recesses b¹ and
have entered or are travelling in the annular groove b².
In the modification represented at Figures 7 to 10 segmental loose filling pieces b³
of the same section as the groove 62 are employed to fill up the groove between the
ends c¹ of the bow c thus giving an additional support thereto.
In this example also instead of forming simple recesses in the stem ba hole of the
required diameter is drilled completely through the stem b but in other respects the
device is similar to that hereinbefore described.
By the employment of the means hereinbefore described it would be impossible to
separate the bow c from the stem b by twisting the same in the manner now success-
fully adopted by pickpockets.
The device is not only adapted to be applied to watches in course of construction
but is also applicable at a small cost to existing watches.
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 :-
In a watch stem the combination of an annular groove, a sleeve or collar loosely
fitting the stem two holes or recesses in the groove of the stem corresponding holes
in the sleeve or collar, and a bow formed at its ends to project through the holes of
the sleeve and snap into the holes or recesses of the stem, substantially as herein
shown and described and for the purpose stated.
D
17h 1 of Tul- 1902
WHITE & WOODINGTON,
27, Southampton Buildings, London, Agents.