Year: 1896

page_text: Date of Application, 25th Aug., 1898-1ccepted, 12th Dec., 1896
I, ALEXANDER GLANDINNING, Clerk, 11 Upper Frank Street, Belfast, 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:-
This invention relates to perpetual calendars and it has for its object to improve
their construction and the method of indicating the years, months and days of the
week.
And in order that my said invention may be properly understood I have hereunto
appended two explanatory sheets of drawings which show two arrangements of the
perpetual calendar.
On the drawings:-
Fig. 1 is a front view of the calendar.
Fig. 2 is a section of the same.
Fig. 3 is a view of the slide on which the years are shown.
Fig. 4 is a front view of a rotary arrangement of the calendar.
Fig. 5 is a view showing the interior of the case Fig. 4.
Fig. 6 is an end-view of the rotating cylinder and mechanism.
Fig. 7 is a view of a rotating cylinder suitable for a calendar constructed as
at Fig. 1.
Referring to the arrangement shown at Figs. 1 to 3.
The calendar shown in these figures consists of two boards or plates a, b, having an
intermediate space c between them in which is inserted a slide d. The board a has a
vertical slot cut in it at a' in order that the numerals on the slide d can show through.
The slide d is provided with a guide bead d which works in a groove b¹ out in the
back board b, and also with a downwardly projecting catch and indicator e.
The days of the week, the months of the year and the years are indicated in a
peculiar manner which I will now describe.
Presuming, by way of example, that the calendar is to run from the year 1801 to
the year 2008 then the years are arranged in vertical columns and in consecutive
order on the slide d commencing, as shown at Fig. 3, with the year 1801 at the top
right hand corner of the slide. It will be seen that a space is left between the
years 1899 and 1900 aud between 1900 and 1901. The year 2008 is found at the
bottom left hand corner of the slide.
Along the top of the front board a the months of the year are arranged consect-
tively in a horizontal line and the months having 31 days, i.e. January, March, May,
July, August, October and December are preferably printed in red ink in order to
readily distinguish them. (As the use of red ink on the drawings is not permitted I
have indicated any parts of the calendar which should appear in red by means of an
underline and it is therefore to be understood that wherever a month or day is under
lined it should be considered as being red.) Arranged in vertical columns below
each month is the day of the week on which the first of the month falls in each
year.
To the left hand side of the board, tables of the days of the month are shown one
table for each day of the week. Each table has 31 days in it, the 31st day is however

page_text: preferably diversified from the rest by being printed in red. In the table under
Sunday the first day of the month is shown as falling on a Sunday, in the table under
Monday the first day of the month is shown as falling on a Monday and so on.
At the bottom is an indicator for the slide d; according as the catch e is moved to
one or other of the triangular spaces/so will the slide indicate through the slot d' the
series of years marked above the spaces.
It will be seen in the column under February that certain days are underlined, this
indicates that whenever the first of February falls on any of theso underlined (or
red) days the month of February for that year has 29 days.
With this calendar all that is necessary, when one wants to know the day of the
week on which any dale in a month falls, is to find out on what day the first of the
month fell and having done this to glance at the table under that day, thus, for
instance, suppose the 1st of the month fell on a Saturday it is only necessary to look
at the table under Saturday and the day of the week for any day in that month is
indicated.
As an illustration of how the calendar is nsod let it bo supposed that it is desired
to find out on what day of the week the 15th of March fell in the year 1801. The
slide is moved to the position shown on the drawings and the year 1801 appears at
the top of the column in the slot a. The eye is then run along the horizontal column
of months for the month of March and immediately below this month is the first day
of the month which is indicated as a Sunday (Su). The table under Sunday is
therefore looked at aud it will be seen that the 15th of March fell on a Sunday. So
that the 15th day of March 1801 was a Sunday; or again supposo it is desired to
find on what day the 7th February 1899 falls, the indicator e of the slide d is movod
towards the right through four spaces f until the column headed with 1885 appears in
the slot a'. Glancing down this column the year 1899 will be seen and opposite it
and below the month of February appears Wednesday (We) as the first day of the
month of February 1899. Now looking to the table under Wod. it will be seen that
when Wednesday is the first of the month the 7th falls on a Tuesday consequently
the 7th of February 1899 falls on a Tuesday.
Instead of using a slide d a roller g Fig. 7 may be used. This roller has of course
vertical columns of years the same as the slide. The roller is fitted in bearings on
the boards a, b, and is rotated by the knob g' so as to show any desired series of years
through the slot a¹.
It will be seen that the arrangement of the days, years, etc., shown in Figs. 4 to 6
is similar to the arrangement at Figs. 1 to 3. In those figures howover a rotating
cylinder is used, instead of a plain surface, for the columns of days of the week, and
the columns of years are also arranged on this oylinder instead of on a separate slide
or cylinder.
The columns of years are arranged at the left hand side of the roller whilst the
columns of days of the week are arranged at the right hand side.
The face plute of the casing i may be made of glass or other material and have
a clear horizontal space or a slot at . Above this space or slot at the right appears
the names of the months and below it the tables of 31 days under the days of the
week.
The rotating cylinder or roller j is mounted on an axle j carried in bearings k.
A disc is also fitted on the axle at the end of the cylinder and secured to the periphery
of this disc is a cylindrical casing or cover 9 which covers up the left hand side of the
cylinder on which the columns of years are marked as indicated in dotted lines at q'.
The disc has a central projection which projects into a recess in the end of the
cylinder or roller j. A spiral spring m causes the projection to bear frictionally
against the sides of the recess. Fitted also on the axle is an arm a which once
in each revolution of the axle pressos on the part o' of the vertical spring o and forces
it backwards. A pin in the part o' bears against the diso p secured to the disc
and catches in its notches or teeth p.
It will be seen that the cylindrical casing 9 has openings in it through which the
years marked on the roller below appear. Each opening has the centuries printed

page_text: beside it thus 18, 19, and so on. There is in the surface of the casing 9 one opening
or window for each column of years. In the columns of years in this arrangement
the centuries are not given as they appear as before stated on the casing q.
With this arrangement when it is desired to find out the day of the week on which
any date falls, all that is necessary is to revolve the cylinder or roller, which can
be done by means of the key s, until the year desired is indicated at the open space i
when thore will also appear under the months the day of the week ou which the
first of each month for that year falls. The day of the week for any date in a month
is found by looking up the tables under the days of the week as herein before described
for the calendar at Figs. 1 to 3. For instance suppose it is desired to find out on
what day the 20th June 1801 fell, the cylinder is revolved until the year 1801
appears in the space when there will appear below the month of June the day on
which the 1st of Juno fell namely a Monday (see Fig. 4). The table under Monday
is now looked up and it will be seen that the 20th fell on a Saturday.
The disc and casing 9 are prevented from rovolving with the roller; by the
catch pin of except once in each revolution, when the arm n forces back the spring o
and withdraws the pin o from the disc thereby allowing the disc to turn one
tooth or notch in order to enable a new column of years to be indicated through
the casing q
The calendar may be further modified or altered without departing from the
invention.
The calendar with its mechanism can be constructed of any suitable material or
combination of materials.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
consider novel and desire to claim is :-
1. A perpetual calendar characterized by a table whercon the day of the week on
which the first day of any month falls in any year is given and a second table in which
is given under the corresponding day of the week the calendar for the mouth,
substantially as set forth.
2. A calendar made substantially as herein before described with reference to
Figs. 1 to 3 and the modification at Fig. 7 of the drawings annexed.
3. A calendar made substantially as herein before desoribed with reference to
Figs. 4 to 6 of the drawings annexed.
Dated this 24th day of August 1896
H. D. FITZPATRICK,
70 Wellington Street, Glasgow, Agent.

page_text: 1981! 1953 1926
1991 1954 1926
1895 1857 1819 1801
a
1986 1858 1930 1802
1983 1955 191Y
1967 1559 931 1803
1984 456 1928
1995 145 1929
198 1958 1930
1904 1959 1931
1989 1963
1931 1804
1901 1889 1861
1933 1605
1902 1890 1862
1934 1806
1903 1891 1963
18351807
1989 190 1931 1904 1891 1864
1969 190 1933 1905 1993 1865
1836 1909
1834 1809
1990 1962 1934 1906 1894 1966 1936 1910
1991 1963 1935 1904
1991 1964 1936 1908
1993 1965 1934 1909
1994 1966 1938 1910
1995 1964 1939 1911
1996. 1968 1940 1912.
1994 1949 1941 1913
1998 1990 1962 1914
1999 1971 1943 1915
2000 1971 1944 1910
2001 1973 1945 1914
1895 1964
1939
1811
1946 1969
997 1869 1941 1913
1898 1840 1942 1814
1999 1871 1843 1815
1940 1812.
1942 1944 1816
1843 1845 1817
1944 1946 1818
1945 1947 1919
1846 1848 1820
1847 1849 1821
1448 1850 18th
2001 1974 1946 1918
2003 1975 1967 1919
2004 1976 1948
2905 1977 1949 1921
1979 1951 1925
1920
1880 1952 1921
1981 1953 1915
2000 1999 1950
1921
1992 1854 1526
2004 1999 1951 1925 1900 1883 1855 1914
2008 1980 1952 1914
1994 1856 1928