AN IMPROVEMENT OR IMPROVEMENTS IN OR RELATING TO WATCHES AND OTHER TIME-KEEPERS
Year: 1880

page_text: LETTERS PATENT to Francis Silveston, of Coventry, in the County of
Warwick, Watch Manufacturer, for an Invention of "AN IMPROVEMENT
OR IMPROVEMENTS IN OR RELATING TO WATCHES AND OTHER TIME-KEEPERS."
PROVISIONAL SPECIFICATION left by the said Francis Silveston at the
Office of the Commissioners of Patents on the 31st January 1880.
FRANCIS SILVESTON, of Coventry, in the County of Warwick, Watch Manu-
facturer. "AN IMPROVEMENT OR IMPROVEMENTS IN OR RELATING TO WATCHES
AND OTHER TIME KEEPERS."
"
The object of this Invention, which relates to improvements in or relating to
watches and other time keepers, such as chronometers and the like, is so to
construct and combine their actuating details as to cause them to " go or keep
in continuous work without requiring re-winding for a considerably longer time
than is generally the case.
Numerous attempts have been made with the object of constructing a watch
which will keep in continuous going for eight or more days without requiring re-
winding, but hitherto without success.
In order to attain the above mentioned object I adapt the watch with two
"going" barrels (though in some cases one might be sufficient) which I cause to
work into a common pinion, preferably of not less than ten teeth (though it may
have but eight), this pinion being on the axle of a wheel considerably or about
one-third smaller than the barrels. The teeth on one of the barrels and on the
wheel just mentioned combined should not be less in number than one hundred
and twenty-six. This wheel works into another pinion of ten teeth which is on
the axle of the centre wheel, and the latter and the third and " fourth" (so
called in the trade) are made with the same number of teeth as in the ordinary
thirty hour watch.
25
"
Each barrel is provided with a spring, preferably of not less than five turns,
and the winding-up of the watch is effected in the same way as that of the

page_text: ordinary English fusee-watch, both springs being simultaneously wound up by
the arrangement of three wheels connecting the two arbors at the back of the
pillar plate.
I arrange one of the barrels so as to be flush with the top plate, and I make the
name-bar in two parts which are screwed together, or in the solid, and turn and
work it into the proper shape or form so as to give extra room for the barrel cover
with the stop-work. The stop-work of the usual Swiss pattern will answer, but
my Invention comprises an improvement therein in the form of a wheel and pinion
which answers the required purpose considerably better.
The above described improvements are applicable to almost every class or
description of watch or time-keeper, and with such improvements it will be
possible to make a watch "go" for eight or for thirty-one or more days con-
tinuously without wanting rewinding.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Francis Silveston in the Great Seal Patent Office on the 30th
July '1880.
FRANCIS SILVESTON, of Coventry, in the County of Warwick, Watch Manu-
facturer. "AN IMPROVEMENT OR IMPROVEMENTS IN OR RELATING TO WATCHES
AND OTHER TIMEKEEPERS."
"
The object of this Invention, which relates to improvements in or connected with
watches and other time-keepers, such as chronometers and the like, is so to con-
struct and combine their actuating details as to cause them to "go or keep in
continuous operation without rewinding for a considerably longer time than is
generally the case.
Numerous attempts have been made with the object of constructing a watch
which will keep in continuous operation for eight or more days without requiring
re-winding, but hitherto without success.
"
In order to attain the above mentioned object I adapt the watch with two "going"
barrels 1, as illustrated in Fig. 1 (though in some cases, such as where there is a
very high piller, one might be sufficient), which I cause to work into a common
pinion 2 (preferably of not less than ten teeth, though it may have but eight if the
arrangement of wheels are adapted thereto). This pinion is on the axle of a wheel 3
which works into a pinion 4 on the axle of the centre wheel 5. The teeth on each
of the barrels and on the wheel 3 combined should not be less in number than one
hundred and twenty-six to regulate the uncoiling of the springs. The remaining
pinions 6, 8, and wheels 7, 9, are made with the same number of teeth as in the
ordinary thirty hour watch. Both barrels are provided with springs, preferably of
not less than five turns, and the winding up of the watch is effected in the same
direction as that of the ordinary English fuzee watch, both springs being simul-
taneously wound up by an arrangement of three wheels 10, 11, 12, Figure 2.
The wheels 10, 12, which are in gear with the wheel 11, are fixed on the barrel
arbors 13 at the back of the pillar plate 14, one or more springs and pawls or
chicks 15 being arranged to act on one or both of the wheels so as to prevent the
springs from uncoiling. Each or both of the barrels (shewn in side view in Fig. 3)
is or are flush with the top plate 16, Figure 4, and the name bar 17 is or may be
made in one piece, centrally raised, as shewn in Figure 4, or it may be made in two
parts if required to give extra room for the barrel cover 18 with the stop work 19,
the latter of which may be of the usual Swiss pattern, but I prefer to make it with
a wheel and pinion, as illustrated in Figure 5, an arrangement which answers the
desired purpose considerably better.
The hereinbefore described improvements are applicable to almost every class or
description of watch or time-keeper, and with such improvements a watch may be
made to " 'go or keep in continuous operation for eight or more days without
requiring rewinding.
"
Having now described the nature and object of my said Invention, together
with the manner in which the same is to be or may be performed or carried
into practical effect, I would remark in conclusion that I claim
Invention,
as my
The above described improvements in or connected with the actuating details
of watches and other time-keepers, such as chronometers, with the object of causing
them to "go" or keep in continuous operation without needing rewinding for a

page_text: considerably longer time than is generally the case, substantially as described and
as illustrated on the accompanying Sheet of Drawings.
In witness whereof, I, the said Francis Silveston, have hereunto set my
hand and seal, the 23rd day of July, in the year of our Lord One thousand
eight hundred and eighty.