Improved Calendar Chronograph Watch.
Year: 1891

page_text: Date of Application, 23rd Mar., 1891
Complete Specification Left, 22nd Dec., 1891-Accepted, 23rd Jan., 1892
PROVISIONAL SPECIFICATION.
Improved Calendar Chronograph Watch.
I, CHARLES HENRY MOODY, of 6 High Street, Crewe, in the County of Chester,
Watchmaker, do hereby declare the nature of this invention to be as follows:-
Near the periphery of a watch dial is a circle divided into minutes, and chrono-
graph seconds using the ordinary long seconds hand.
Within this circle are three other dials; the one at the top to represent hours,
and minutes showing ordinary time with a pair of small hands. The one on the
left hand is divided into seven equal parts to represent the day of the week.
The dial on the right to represent the date of the month is numbered from one to
thirty one, and is divided into thirty one equal parts.
The movement of the several fingers is effected in the following manner.
I use a small motion work which works the ordinary time on the top dial.
Geared into the above mentioned hour wheel is a wheel running from the centre of
plate with double the number of teeth, with two small pins.
This large centre wheel I use for driving the two star wheels which tell day and
date of month. The star wheels are prevented from passing more than one tooth
at a time by locking springs.
Dated this 23rd day of March 1891.
CHARLES HENRY MOUDY.
COMPLETE SPECIFICATION.
Improved Calendar Chronograph Watch.
1, CHARLES HENRY MOODY, of High Street, Crewe, in the County of Chester,
Watchmaker, 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 :-
In the manufacture of calendar watches difficulty has hitherto been experienced
in arranging suitable mechanism for actuating the calendars whilst retaining the
centre seconds on the dial in what are known as chronograph or stop watches and
this invention is designed with the object of providing a chronograph centre
seconds watch with calendars for indicating the days of the week and of
the month.
It will be fully described with reference to the annexed drawing which as an
example show the invention as applied to a watch with English lever escapement,
(drawn to an enlarged scale).
Fig. 1. front view of watch with dial removed showing my invention.
Fig. 2. dial.
Round the dial, near the periphery, a circle is divided into chronograph seconds
in the usual way for use with the ordinary long or centre seconds hand.
Within this circle I place three other circles forming small dials, the one at the
top being marked to represent hours and minutes showing ordinary time with a pair
of small hands; the one to the left being divided into seven equal parts and marked
to represent the days of the week; and the one to the right divided into thirty-one
and numbered or figured from 1 to 31 to indicate or represent the date of the month.
A small hand or pointer is applied to each of the two right and left hand dials
which are moved forward by the movement of the watch one space each day to
point to and indicate respectively the day of the week and date of the month.
The hands which indicate the ordinary time on the top dial, are driven by a

page_text: small motion comprising the driving or carrier wheel a, and the hour wheel b, the
former of which gears with and is driven by the ordinary watch mechanism in the
usual way (not shown on the drawings). The long centre seconds hand is also
driven in the usual way. In the centre of the plate A, over the arbor or spindle
of the centre seconds hand, I place a wheel c with double the number of teeth
there is in the hour wheel so that it will make one revolution for every two
revolutions of the hour wheel b. Under the centre of the two left and right hand
dials I place the star wheels d and e, the wheel d having seven teeth or divisions,
and the wheel e, thirty-one teeth or divisions. On the centre wheel I fix two
pins and, one on the top side and the other on the under side. At each
revolution of the centre wheel, the top pin fengages with the star wheel d and the
bottom pin g with the star wheel e moving them respectively one tooth each time,
and with them the pointer which indicates on the dial the day or date.
The star wheels are prevented from passing more than one tooth at a time, by a
locking spring, which engages between the teeth, the spring engaging with the
star wheel d, and the spring i, with the star wheel e.
In order to set the star wheels d and e and the indicating fingers connected
thereto, should the fingers from any cause require to be moved or set such as the
stopping of the watch, or in the case of the date finger, the variations in the length
of the months, I apply a small spring lever to each of the star wheels, by which
they can at any time be moved on one tooth at a time. In the case of the date
wheel e, I apply the lever k, which is held out of contact with the teeth by the
spring. The lever is actuated by a small sliding pusher m, held in position by
the small plate n. The end of the sliding pusher m projects through the rim of the
plate A and is met by a similar slide in the side of the case which is constructed
with a flat end or head to abut against the end of m. In the case of the other star
wheel d I apply a lever held out of contact with the teeth of the wheel by the
spring and instead of being actuated direct by the pusher m', I interpose a
pivoted crank lever k", the inner end of which engages with the tail of the lever k¹,
and against its outer end the pusher m¹ presses. The pusher m' is held in position
by the plate n', and is actuated by a pusher similar to that already described,
extending through the case of the watch.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
(1). In a chronograph or centre seconds watch, the combination with the ordinary
mechanism, and the small motion for actuating the time indicating hands, of the
centre wheel with a pin on each face, the two star wheels carrying fingers
to indicate days and dates, and the dial with three faces, substantially as
described.
(2). A watch with centre seconds having the several parts constructed and
arranged to constitute a calendar chronograph watch substantially as described
and shown.
Dated this 21st day of Documber 1801
WM. P. THOMPSON & Co.,
6, Bank Street, Manchester, Patent Agents.