A COMBINED CALENDAR AND TIME PIECE WITH PERPETUAL AUTOMATIC ADJUSTER ATTACHMENT FOR THE IRREGULAR NUMBER OF DAYS IN THE DIFFERENT MONTHS
Year: 1876

page_text: PROVISIONAL SPECIFICATION left by Alexander Melville Clark at the Office
of the Commissioners of Patents on the 1st May 1876. A communication from
abroad by Miner Hamlin Paddock, of East Clarkson, Monroe County, State of
New York, United States of America.
ALEXANDER MELVILLE CLARK, of 53, Chancery Lane, in the County of Middlesex,
Patent Agent. "A COMBINED CALENDAR AND TIME PIECE WITH PERPETUAL
AUTOMATIC ADJUSTER ATTACHMENT FOR THE IRREGULAR NUMBER OF DAYS IN
THE DIFFERENT MONTHS."
The Invention relates, first, to the improved construction and arrangement of a
calendar in a time piece so combined therewith as to indicate the day of the week
and month and the month of the year.
This part of the Invention consists in making the calendar devices independent of
the effect of the mainspring so that instead of being so that instead of being operated
thereby they are actuated by the hand of the operator through the winding stem, by
means of which arrangement the fact of the winding of the watch is indicated upon
the dial face, and the question as to whether the watch has been wound or not is
ensily ascertained by referring thereto.
a
Tho improvements also serve to simplify the operating parts of the calendar,
and consequently render its construction cheaper and its operation more reliable.
The first part of the Invention is represented by. Figure 1 of the annexed
Drawings, which shows the operating parts with the dial plate removed. A, B, C,
self-adjusting mechanism for setting the calendar in act of winding. Disk A being
on end of winding stein, and C a sliding bar on B represented by a circle in dotted
lines. D, day of week wheel (above which is a hand and index represented by a
circle in, dotted lines) operated by C, and F day of month wheel operated by D,
operative for day of month. E, month of year wheel operated by F, above which is
a hand and index represented by a circle in dotted lines.
.
The Invention relates, secondly, to a novel construction of automatic perpetual
attachment, designed to be applied to a time piece with the calendar. The said
calendar with its attachment is arranged for the days, weeks, and months, with
indicating hands for each, and, while pratically automatic, is also perpetual, that is
to say, the mechanism is such as to compensate for the irregular number of days
occurring in the different months by a system of skipping, whereby a single day wheel
of thirty-one sub-divisions is made to indicate successively and in proper order the
different number of days (28, 30, or 31) as they occur in the successive months of
Pasica Al

page_text: the year, the principle governing the Invention resting on the method of taking an
established measurement of 28 days, which is common to all the months of the year,
and compensating for the irregular remnants of the successive months in the
relative order of their occurrence by using these remnants respectively.
The second part of the Invention is represented by Figure 2. A, day of month
wheel, and B, C, self-adjusting winding mechanism all as before; D, wheel for
conveying motion from C to A; F, skip regulator provided with slots g, h, i, j, k,
for short months; E, pallet operated upon by long teeth, and moving skip
regulator F; J, slide bar for entering slots of F, and adjusting skip lever H, the
latter taking motion from F, and moving day of month wheel A; H is adapted to
be operated upon at the point f by a of the winding mechanism. The skip
regulator F, moving each month, has an index to serve for month of year wheel.
The day of week wheel may be pivoted at the centre over the skip lever, or put in
any convenient position. Wheel F may be modified to allow for 29 days once in
four years for February, and the winding mechanism modified to apply to all clocks.
Skip lever H may be used to move A daily, and D dispensed with. J may be
made of one piece with H.