Improvements in Perpetual Calendars.
Year: 1892

page_text: Date of Application, 12th Feb., 1892
Complete Specification Left, 4th Nov., 1892-Accepted, 31st Dec., 1892
PROVISIONAL SPECIFICATION.
Improvements in Perpetual Calendars.
I, WILLIAM WHITNEY KITCHEN, 532 North Church Street, of Rockford,
Illinois, U.S.A. Inventor, do hereby declare the nature of this invention to be
as follows:-
This my invention has reference to an improved perpetual calendar, and the
object of the invention is to provide a simple, neat, and convenient calendar
adapted to be carried in the pocket. My improved calendar consists of a circular
coin, the body of which has a central concaved recess adapted to bold a centre
piece which is held to turn therein. The centre piece has a bevelled edge over
which the adjacent portion of the body fits. It also has a centre piece which has
a transverse slot therein and the initial letters of the days of the week produced
thereon. The remaining portion of the coin has radial spaces arranged around
the recess with the months of the year produced therein. By turning the centre
piece into a certain position the day of the month, etc., can be read off on the face
of the coin. The back of the coin may be used for advertisements or the like,
which are imprinted thereon.
Dated this 12th day of February 1892.
W. H. MUNNS,
Applicant's Agent.
COMPLETE SPECIFICATION.
Improvements in Perpetual Calendars.
I WILLIAM WHITNEY KITCHEN of 321 Rowe Street, Rochester in the County
of Munroe and State of New York, United States of America Manufacturer, 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 :-
My invention relates to improvements in perpetual calendars and it has for its
object to produce a simple and attractive device which when properly constructed
will make a nice souvenir article, adapted to be carried in the pocket, which
accurately indicates the days of the month, week and year, as well as the dominical
days of the year and which needs to be set but once in ordinary years and twice
in leap years.
To this end my invention consists in a perpetual calendar, the construction of
which will be hereinafter described and claimed.
Reference is to be had to the accompanying drawings forming a part of this
Specification, in which similar figures of reference indicate corresponding parts in
both the views.
Figure 1 is a plan view of the calendar embodying my invention, and Figure 2
is a cross section of the same on line 2-2 in Figure 1.
The body of the calendar consists of a disc 10, which has a central concaved
recess 11 in the top side, which recess is adapted to receive a revoluble centre
piece 12 having a convex bottom so that it may fit nicely in the recess, and the
centre piece has also a transverse open slot 13, adapted for the insertion of a small
coin or other small article, whereby it may be easily turned. The centre piece 12
is provided with a beveled edge 14, and the metal or other material composing the

page_text: disc 10 is stamped down over the upper surface of the beveled edge, thus holding
the centre piece firmly in place, and there should be sufficient friction upon the
centre piece to prevent it from accidentally turning. The centre piece is lettered
with the initial letters of the days of the week, the said letters being spaced
regularly upon it, and the disc is divided into seven radial spaces adapted to i
register with the letters on the centre piece, the said spaces having the months of
the year inscribed or otherwise produced in them, and as in some cases two months
will begin with the same day it will be seen that in some of the spaces the names
of two months will appear and in others the names of but one. The letter on the
centre piece which appears opposite a certain space will indicate the first day of
the month, and in each of the radial spaces on the disc, and preferably near the
inner portion of the space, is one of the dominical letters, the letters being arranged
from A to G in the usual manner and serving the ordinary purpose of indicating
the Sundays in the year. On the outer portion of the disc are preferably printed
brief directions, such as "Set yearly; twice leap-year." The calendar is set the
1st of January, and if the year is a leap-year on the 29th of February or
1st of March.
The manner of using the device is as follows-
As shown in Figure 1, it will be seen that the year comes in on Thursday, and
the letters which appear opposite the months other than the month of January will
indicate the first days of the respective months. We will say that the day of the
week on which the 4th of July occurs is to be found. Reference is had to the
space on the disc in which the month of July is printed and to the letter on
⚫ the centre piece, and it will thus be seen that the first day of July is Wednesday,
and by reckoning on four spaces to the right it will be found that the 4th of July
comes on Saturday. For another example, suppose that the 30th day of May is
to be found that is, the day of the week which occurs. on the 30th. By reference
to the month of May it will be seen that the first day of the month is Friday,
and as Friday comes on the 29th, as well as the 1st, the following day, the 30th,
will be Saturday. It will thus be seen that any day may be quickly found, and at
the end of the year it is only necessary to move the centre piece back one space to
set the calendar for the ensuing year. If the year is a leap-year, it will also be
necessary to reset the centre piece on the 29th of February or 1st of March.
It will be noticed by reference to the disc that the months are not regularly
arranged thereon, but are arranged according to their opening days-that is to say,
there are two months, January and October, which begin on Thursday, and these
are included in one space. There is but one month, May, which begins on Friday,
and this is arranged singly in another space, and so on.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is.
1. A perpetual calendar, comprising a body having a central recess and having
the names of the months arranged radially around the recess, and a centre piece
capable of being revolved in the recess, provided with a beveled edge over which
the edge of said recess is upset or projected, and having the initial letters of the
days of the week produced thereon and adapted to register with the month spaces,
substantially as specified.
2. A perpetual calendar comprising a body having a central concaved recess and
having radial spaces arranged around the recess with the months of the year
produced therein, a convex bottomed centre piece capable of being revolved in the
recess, said centre piece having a beveled edge over which the adjacent portion of
the body fits, and the centre piece also having a transverse slot therein, and the
initial letters of the days of the week produced thereon substantially as described.
3. A perpetual calendar comprising a body having a central recess therein and
having the names of the months arranged in radial spaces around the central

page_text: recess, the month-spaces having also the dominical letters therein, and a centre
piece capable of being revolved in the recess, said centre piece having letters
indicative of the days of the week thereon, substantially as described.
Dated this 4th day of November 1892.
W. W. KITCHEN,
By A. M. & Wm. Clark,
53, Chancery Lane, London, Chartered Patent Agents.