GB244263A - - Google Patents

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Publication number
GB244263A
GB244263A GB244263DA GB244263A GB 244263 A GB244263 A GB 244263A GB 244263D A GB244263D A GB 244263DA GB 244263 A GB244263 A GB 244263A
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GB
United Kingdom
Prior art keywords
slide
frame
century
numbers
year
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Publication of GB244263A publication Critical patent/GB244263A/en
Active legal-status Critical Current

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Abstract

244,263. Hancock, W. Dec. 11, 1924. Perpetual calendars.-A perpetual calendar for exhibiting the dates of a year completely comprises a frame or sheet A, Fig. 1, with 12 apertures a, .. all for the months and an aperture a<12> for displaying year numbers of a, century marked on a removable slide B, Fig. 4. The slide is provided on both sides with sets of date figures arranged in thirteen columns as shown for cooperation with the apertures in the frame, one side being for ordinary years and the other for leap years. Above the aperture a<12> on the frame is a table a<13> of century numbers. The calendar is set when any year number on the slide B is moved to the column containing the century number. The date figures on the opposite sides of the slide B are in distinguishing colours as are also certain of the century numbers on the frame A and the leap year numbers appear only on one side of the slide.
GB244263D Active GB244263A (en)

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Publication Number Publication Date
GB244263A true GB244263A (en)

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ID=1738348

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GB244263D Active GB244263A (en)

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GB (1) GB244263A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2575555A (en) * 1949-06-23 1951-11-20 Plante Paul W La Perpetual calendar
US2841900A (en) * 1958-07-08 Multi-year calendar
US2847778A (en) * 1958-08-19 opoczynski
US3201884A (en) * 1962-11-13 1965-08-24 John L Aughey Perpetual calendar
GB2183372A (en) * 1985-11-21 1987-06-03 Nicholas Stewart Hunt Perpetual monthly calendar
GB2252852A (en) * 1991-02-12 1992-08-19 Geoffrey Cutting Data collation devices

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2841900A (en) * 1958-07-08 Multi-year calendar
US2847778A (en) * 1958-08-19 opoczynski
US2575555A (en) * 1949-06-23 1951-11-20 Plante Paul W La Perpetual calendar
US3201884A (en) * 1962-11-13 1965-08-24 John L Aughey Perpetual calendar
GB2183372A (en) * 1985-11-21 1987-06-03 Nicholas Stewart Hunt Perpetual monthly calendar
GB2252852A (en) * 1991-02-12 1992-08-19 Geoffrey Cutting Data collation devices
GB2252852B (en) * 1991-02-12 1994-11-16 Geoffrey Cutting Data collation devices

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