IMPROVEMENTS IN ROTATING CALENDERS OR DATE INDI- CATORS
Year: 1874

page_text: LETTERS PATENT to Warren William De la Rue and William Thomas
Shaw, both of 110, Bunhill Row, in the City of London, for the
Invention of "IMPROVEMENTS IN ROTATING CALENDERS OR DATE INDI-
CATORS
"
Sealed the 30th June 1874, and dated the 24th January 1874.
PROVISIONAL SPECIFICATION left by the said Warren William De la
Rue and William Thomas Shaw at the Office of the Commissioners
of Patents, with their Petition, on the 24th January 1874.
We, WARREN WILLIAM DE LA RUE and WILLIAM THOMAS SHAW,
both of 110, Bunhill Row, in the City of London, do hereby declare the
nature of the said Invention for "IMPROVEMENTS IN ROTATING CALENDARS OR
DATE INDICATORS," to be as follows:
-
This Invention has for its object improvements in rotating calendars
or date indicators, and the improvements relate to the moving parts
employed to exhibit the date.
The front part of the calendar is perforated with two apertures of
uitable size placed one above the other, the upper one of which we

page_text: employ to exhibit the date of the day and the lower one the name of the
month. The dates and the months are printed on two separate discs,
the "date" disc being larger than the "month" disc, and recessed or
countersunk in the middle to such a degree that when the two discs are
superposed concentrically the smaller disc has its face in the same plane
or level as the larger one. We then attach the smaller disc to the front
part of the calendar by means of a common eyelet, on which it revolves,
and thus exhibits the name of the month through the lower of the two
apertures before named. The larger recessed disc is then attached by
means of a headed pivot passed through the hollow axis of the smaller :
disc and securely riveted at the end. The larger disc moves freely on
its own pivot so as to bring the date into view through the upper
aperture without disturbing from its position the smaller disc exhibiting
the month. The larger disc is perforated towards its centre with one or
more elongated slots, through which the smaller disc can be moved 1
forward when required.
At the back of the calender and partially overlapping the larger disc
a strip of paper may be passed for the purpose of keeping the inner
surface of the disc in close contact with the aperture in front.
The face of the calendar may be printed or ornamented in any desired 2
SPECIFICATION in pursuance of the conditions of the Letters Patent
filed by the said Warren William De la Rue and William Thomas
Shaw in the Great Seal Patent Office on the 24th July 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, WARREN 2
WILLIAM DE LA RUE and WILLIAM THOMAS SHAW, both of 110, Bunhill
Row, in the City of London, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-fourth day of January, in the
year of our Lord One thousand eight hundred and seventy-four, in the 3
thirty-seventh year of Her reign, did, for Herself, Her heirs and succes-
sors, give and grant unto us, the said Warren William De la Rue and
William Thomas Shaw, Her special license that we, the said Warren
William De la Rue and William Thomas Shaw, our executors, admini-

page_text: strators, and assigns, or such others as we, the said Warren William De
la Rue and William Thomas Shaw, our executors, administrators, and
assigns, should at any time agree with and no others, from time to time
and at all times thereafter during the term therein expressed, should and
lawfully might make, use, exercise, and vend, within the United King-
dom of Great Britain and Ireland, the Channel Islands, and Isle of
Man, an Invention for "IMPROVEMENTS IN ROTATING CALENDARS OR DATE
INDICATORS," upon the condition (amongst others) that we, the said
Warren William De la Rue and William Thomas Shaw, our executors
or administrators, by an instrument in writing under our or their hands
and seals, or under the hand and seal of one of us or them, should par-
ticularly describe and ascertain the nature of the said Invention, and
in what manner the same was to be performed, and cause the same
to be filed in the Great Seal Patent Office within six calendar months
next and immediately after the date of the said Letters Patent.
NOW KNOW YE, that we, the said Warren William De la Rue and
William Thomas Shaw, do hereby declare the nature of the said Inven-
tion, and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement thereof,
that is to say :-
This Invention has for its object improvements in rotating calendars
or date indicators, and the improvements relate to the moving parts
employed to exhibit the date.
The front part of the calendar is perforated with two apertures of
suitable size placed one above the other, the upper one of which we
employ to exhibit the date of the day and the lower one the name of
the month. The dates and the months are printed on two separate discs,
the "date" disc being larger than the "month" disc, and recessed or
countersunk in the middle to such a degree that when the two discs are
superposed concentrically the larger or date disc has its face in the same
plane or level as the smaller onc. We then attach the smaller disc to
the front part of the calendar by means of a common eyelet, on which
it revolves, and thus exhibits the name of the month through the lower
of the two apertures before named. The larger recessed disc is then
attached by means of a headed pivot passed through the hollow eyelet
axis of the smaller disc and securely riveted at the end. The larger disc
moves freely on its own pivot so as to bring the date into view through

page_text: the upper aperture without disturbing from its position the smaller disc
exhibiting the month. The larger disc is perforated towards its centre
with one or more broad elongated slots, through which the smaller disc
can be moved forward when required.

page_text: calendar face by the means substantially as herein described, so that the
discs may be moved independently one of the other.
In witness whereof, we, the said Warren William De La Rue and
William Thomas Shaw, have hereunto set our hands and seals,
this Twenty-third day of July, in the year of our Lord One
thousand eight hundred and seventy-four.
W. W. DE LA RUE. (L.S.)
WH. THOB. SHAW.
(L.S.)