A New and Useful Improvement in Perpetual Calendars.
Year: 1895

page_text: A New and Useful Improvement in Perpetual Calendars.
We ROBERT HUTCHINSON BULLOCK and WILLIAM GUERRARD FAIRCHILD
both citizens of the United States of America residing at Savannah in the County
of Chatham and State of Georgia there respectively engaged as Architect and
Clerk 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 our invention is to produce in a simple and compact form &
perpetual calendar.
The nature of the invention will be described below, and pointed out in the
claim.
The drawing is a plan view.
Like letters refer to like parts.
"A" is the large disk. This may be made of card-board, or any suitable
material. It is stationary, and may be fastened to any suitable back, or held in
hand. On the left of the said disk is placed the words "Years," in prominent
type, and to the right of this a cipher (0). Below, in circular arrangement to
accommodate the smaller disk, hereinafter described, follow numerals, placed, as
shown, from 1 to 99, inclusive, representing years. Below "Years" four numerals
are placed on each line down to the fifteenth line inclusive, and below that three.
Differently stated, the first downward arrangement of numerals beyond the
periphery of the smaller disk runs from 1 to 28, inclusive, outside of that from
29 to 56, then from 57 to 84 and then from 85 to 99. On the right of disk A,
outside of the periphery of the smaller disk, are placed, in circular arrangement,
numerals representing the days of the month, from 1 to 31 inclusive, and outside
of this, under the word "Months" the names of the months. On the first line
are placed January and October, on the next April and July, on the next
September and December, on the next June, on the next February, March, and
November, on the next August, and on the next May. Immediately below, see
dot and dash line, in colored ink or distinctive type, the same order of numerals
is repeated but the names of the months are differently arranged January and
July appear together, then September and December, then June alone, then
March and November, then August and February, then May alone, and then
April and October.
:
B represents the smaller, or revolving disk, which may be of any suitable
material. About the centre, at a proper distance is drawn a circle. On seven
radial lines in red, or distinctive type, are numerals representing old style centuries,

page_text: the words "Old Style" appearing above as a direction, and the word "Centuries"
partly within said circle. On the first line appear the numerals 16, 9 and 2 on
the second, 11 and 4; on the third 13 and 6; on the fourth 15 and 8; and 1; on
the fifth 17, 10 and 3; on the sixth 12 and 5, and on the seventh 14, 7 and 0.
Beyond said circle, on some of the radials, are numerals for new style centuries.
See also words "New Style" as a direction. The first line has 26, 22 and 18, the
second 27, 23, 19 and 15; the third, fourth and fifth have none; the sixth 24,
20, 16 and 12, and the seventh 25, 21, and 17. Near the periphery of the disk,.
outside of the first radial, begins a semi-circular arrangement of days, which may
be called the reference days in connection with the year numerals. There are sixty
of these days, counting the two on the first, second and seventh radials. They
begin and end with Tuesday, but are not in consecutive order throughout. The
first day (Tuesday) should be in red ink or distinctive type, likewise every fourth
day after that, and the intermediate three days in black ink, likewise Wednesday,
Monday and Friday adjacent to Tuesday, Sunday and Thursday. See first,
second and seventh radials. By having the above number of days, there will be
a reference day for any year of any century within the present scope of this
calendar; or, for instance when the numeral 14 or 7 "Old Style" is turned opposite
to the word "Years."
The "
Old Style" centuries should be printed in red or peculiar type to
distinguish them, and the "New Style" in black, except on the sixth radial, where
they should be in red. The reason, however, for making some centuries red and
others black in the manufactured calendar is not wholly to distinguish them, but
also to indicate that when the first year of a century is under consideration the
reference day of said year should be red for the red centuries and black for the
black centuries.
The arrangement of the old and new style century numerals and reference
days as shown is to cover the Leap years and obviate any calculation for them.
On the right of this smaller disk are placed "Days of the week"
twenty nine
in number, beginning and ending on Tuesday, and arranged consecutively. The
days need not begin with Tuesday necessarily, but should be of such number as to
cover not less than double the range of months for convenience. They should be
in black ink, and their purpose is to register with any desired month, when the
reference day of any year is established, as will appear under the mode of
operation, which is as follows
66
"
To get the calendar for December 1894, turn 18 under "New Style" centuries
in line with the word "Years." Then opposite 94 will appear Monday in black
type, which is the reference day throughout this year. Next under "Days of the
week," turn Monday in line with December first occurring below the word
"Months' which gives the calendar for that month, which begins on Saturday.
To find April 1884 repeat the process. Tuesday a red day, will appear opposite 84
as a reference day. Now turn Tuesday in "Days of the week in line with
April" in red, and the calendar of that month will appear. In other words, the
red days refer to the red months and the black days to the black months. When
the first year of a century is under consideration, take the black day on the same
line as the century for the "New Style," and the red day for the "Old Style
where two days occur on the same line. In Catholic countries for dates after
March 20, 1582, use "New Style" and for dates before March 12, 1582 use
"Old Style." In States of Germany for dates after March 20, 1700 use
"New
Style" for dates before March 12, 1700, use "Old Style." For Kingdom of
Denmark, use the same as for Germany. For England, for dates after
September 13, 1752, use "New Style" for dates before September 4, 1752 use
"Old Style."
"
Under the present combination, this calendar could be extended for centuries.
We propose to make the large disk in any desired shape, and also to leave
space for advertising purposes, if desired; likewise, in directions for operations,
to employ different colors of ink or distinctive type, as the case may be. What

page_text: "
is referred to as 66
'Red Days' "Red Months" and "Red Centuries" appear in
the drawing in the form of lettering and numbering which will distinguish them.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same ought to be performed we declare that what
we claim is
The combination with the larger, stationary disk having year numerals con-
tiguous to the periphery of the smaller disk, the monthly tables near the periphery
differently arranged, substantially as shown, and adjacent numerals representing
days of the month, of the smaller, revolving disk having numerals for the old and
new style centuries, a peripheral table of yearly reference days, and a separate
peripheral table of days of the week for registering the established reference day
of the chosen year with any month of that year as set forth.
Deted this 10th day of June 1895.
ROBERT H. BULLOCK.
WILLIAM G. FAIRCHILD.