An Improvement in Watches.
Year: 1891

page_text: Date of Application, 17th Apr., 1891
Complete Specification Left, 29th Jan., '892-Accepted, 5th Mar., 1892
PROVISIONAL SPECIFICATION.
An Improvement in Watches.
CHARLES HUTON ERRINGTON Holyhead Road Coventry Watch Movement
Manufacturer do hereby declare the nature of this invention to be as follows :-
--
A detent placed between the top-plate and pillar-plate, acting on the barrel
winding wheel, the top pivot being made large enough, to admit of its end being
either slotted or squared, so that by using a screw driver or key, the mainspring
may be run down without removing the watch from the case.
Dated this 16th day of April 1891.
CHARLES HUTON ERRINGTON.
COMPLETE SPECIFICATION.
An Improvement in Watches.
CHARLES HUTON ERRINGTON of Holyhead Road Coventry in the County of
Warwick Manufacturer 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 :-
My invention has for its object an improvement in watches by which the letting
down of the main spring of a keyless watch may be effected without removing the
case from the watch and by my arrangement the detent would be kept out of
action with the barrel winding wheel until such time as it may be again brought
into action again.
In carrying my invention into effect a detent is placed between the top plate so
ns to act upon the barrel winding wheel the top end of the detent being made
large enough to admit of its end being either slotted or squared so that by using
either a screw driver or key the main spring may be run down without removing
the watch from the case.
In order that my invention may be clearly understood & more easily carried
into practise 1 have appended hereunto a sheet of drawings upon which I have fully
illustrated the nature of my said improvement.
Figure 1 is a front view of the pillar plate shewing the detent engaging with the
barrel winding wheel.
Figure 2 is a similar view to Figure 1 but shewing the detent disengaged from
the barrel winding wheel.
Figure 3 is a section through the pillar plate shewing a side elevation of the
detent.
In carrying my invention into effect the barrel winding wheel B is mounted on
the front of the pillar plate C and the detent A is mounted so that its end a² may
engage with the said wheel B. The arbor to which the detent is fixed is carried
up through the top plate & finished with the slotted or shaped end a³ to receive a
screw driver or key. The spring D presses against the end a' of the detent thereby
retaining it in its engaged position as shewn by Figure 1 & also retaining it in
position when disengaged as shewn by Figure 2 so that by no possibility can it
engage again with the wheel B except by the assistance of the turn screw
or key.

page_text: Having now particularly described & ascertained the nature of my said inven-
tion & in what manner the same is to be performed I declare that what I
claim is
The improvements in watches by which the detent A is controlled by the spring D
whether in its engaged or disengaged position in combination with the means for &
mode of operating the said detent substantially as & for the purpose herein set
forth & shewn upon the accompanying drawings.
Dated this 18th day of January 1892.
CHARLES HUTON ERRINGTON.