An Improved Calendar Clock.
Year: 1891

page_text: Date of Application, 31st Dec., 1891
Complete Specification Left, 6th Apr., 1892-Accepted, 7th May, 1892
PROVISIONAL SPECIFICATION.
An Improved Calendar Clock.
I, THOMAS HAYCOCK, Station Street, Ashbourne in the County of Derby,
Clock Manufacturer do hereby declare the nature of this invention to be as
follows:
:-
arrange
The object of my invention is to provide a clock which shall indicate the day of
the week and of the month automatically; in carrying out my invention 1 gear a
cog or toothed wheel into the hour wheel of the clock, with this cog wheel I engage
a second having a short pin or stud fixed at or near the outer edge thereof this pin
or stud is arranged to engage or catch in the teeth of another wheel having thirty-
five teeth, the gearing being arranged so that the said stud or pin shall engage
with the said teeth once in twenty-four hours, say at midnight.
three
concentric dials or discs each larger than the other and mounted on the same
spindle the outer or smaller one indicates the month and is free to be moved by
hand and has to be set at least once a month, the two inner dials move together
and indicate the day of the week and of the month respectively and are operated
automatically through the medium of the wheel having thirty-five teeth as already
explained, the outer edges of these two dials are marked each with thirty-five
radial divisions the outer or smaller dial of the two indicating the day of the week
(being thus divided into five weeks) and the inner or larger one being marked with
the day of the month 1, 2, 3, &c. up to 31. At the beginning of each month it is
necessary to fix the outer dial as already explained and also to move the innermost
dial until the day of the week corresponds with the 1st day of the month, which
may be done instantly, it is then set for the month and continues to work as already
explained as long as the clock is wound up regularly.
To ensure an even turn of the cog-wheel having the thirty-five teeth and to
prevent the same over-running I arrange a bracket to depend from the clock frame
and upon this I mount or fix a spring carrying a small wheel, roller or the like at
its outer end of convenient form and size for fitting between the teeth of the wheel
as it is pushed round by the pin aforesaid, the wheel being thus only allowed to
travel one cog at a time.
It is evident that this apparatus can be set at any time during the month or at
any hour or date and that if desirable the gearing may engage with any other
suitable wheel of the clock and any other convenient arrangement of gearing may
be used from the works of the clock to bring about the desired result as already
explained.
The outer case or door of the clock is suitably formed or cut to allow of the
date &c. to be seen from the outside, one date only being visible at a time.
THOS. HAYCOCK,
Applicant.
COMPLETE SPECIFICATION.
An Improved Calendar Clock.
1, THOMAS HAYCOCK of Station Street, Ashbourne in the County of Derby,
Clockmaker 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 object of my invention is to provide a clock which shall indicate the day of

page_text: the week and of the month automatically, that is to say through the medium of
the clock mechanism and in order that my invention may be the more readily
understood I have caused to be annexed to this Specification the accompanying
sheet of drawings to the figures and letters of reference marked thereon I now
refer :-
Figure 1 is a front elevation of my improved clock with the casing removed.
Figure 2. is a vertical section through same on line a. a.
Figure 3. is a back elevation, certain parts being broken away for the sake of
convenience and for the same reason certain parts are not shewn at all on the two
last figures, the said parts having no relation to my improvements.
In carrying out my invention I gear a cog or toothed wheel A. into the hour
wheel B. of the clock, with the cog-wheel AI engage a second C. having a short
pin or stud D fixed at or near the outer edge thereof to engage or catch in the
teeth of another wheel E having thirty-five teeth, the gearing being arranged so
that the said stud or pin D shall engage or catch against one of the said teeth once
in twenty-four hours, say at midnight.
I arrange three concentric dials or discs each larger than the other and mounted
on the same spindle G., the said spindle being carried by a bracket J, the outer or
smaller one F indicates the month, being free to be moved by hand and has to be
set once a month, the two inner dials move together and indicate the day of the
week and of the month respectively and revolve with the spindle G which turns
them forward one day every time the pin D pushes the tooth wheel E forward.
The outer edges of these two dials are marked each with thirty-five radial divisions
the outer or smaller dial of the two H indicating the day of the week (being thus
divided into five weeks) and the inner or largest dial I being marked with the day
of the month up to "31" see Figure 1.
It is
At the beginning of each month it is necessary to fix the outer dial F as already
explained and it remains stationary until again moved for the next month.
also necessary to move the innermost dial I. until the first day of the month is
placed opposite the proper day of the week on the dial H, which is done instantly,
it is then set for the month and continues to work as already explained as long as the
clock is wound up regularly. The two dials which have to be set are indented on
the edges in some suitable manner as at M for convenience of turning.
To ensure an even turn of the cog-wheel E with thirty-five teeth and to prevent
the same over-running I continue the bracket J, depending from the clock frame,
and upon this I mount or fix a spring K carrying a small wheel, roller or other
device L at its outer end of convenient form and size for fitting between the teeth
of the wheel E as it is pushed forward by the pin D aforesaid, the wheel E being
thus allowed to travel only one cog at a time once a day, the spindle and two inner
dials moving with it.
It is evident that this apparatus can be set at any time during the month at any
hour or date and that if desirable the apparatus may be worked from any other
suitable wheel of the clock and that any other convenient arrangement of gearing
wheels may be used from the works of the clock to bring about the desired result
as already explained.
The outer casing of the clock is cut away or otherwise suitably formed so as
admit of the date &c. being seen from the outside the position of the said indicator
being shewn by dotted lines on Figure 1., in which the apparatus is shewn indicating
Friday March 25th."
I may also arrange to shew the years in some suitable way such as having
them marked on an endless band or rollers to pass behind an opening formed in the
case.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed 1 declare that what I
claim is:-
The construction of a clock to indicate the day of the month and of the week

page_text: automatically through the medium of gearing engaging with the ordinary works of
the clock substantially as herein described and as illustrated by the accompanying
sheet of drawings.
3000
W. SWINDELL,
Agent for the Applicant.