GB339571A - - Google Patents
Info
- Publication number
- GB339571A GB339571A GB339571DA GB339571A GB 339571 A GB339571 A GB 339571A GB 339571D A GB339571D A GB 339571DA GB 339571 A GB339571 A GB 339571A
- Authority
- GB
- United Kingdom
- Prior art keywords
- numbers
- disc
- marked
- circumference
- month
- 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.)
- Active
Links
Abstract
339,571. Weber, E. Feb 3, 1930, [Convention date]. No Patent granted (Sealing fee not paid). Calendars. - A perpetual calendar comprises three concentrically mounted discs, the lower disc a Figs. 1 and 2, has marked on its circumference the date figures and century numbers, the central disc b has marked thereon two concentric series e, e<1>, of yea.r numbers, and the upper disc c has marked on its circumference the day names and month names arranged as shown. The central disc b is provided with an aperture d to expose a century number on the lower disc while the upper disc c is provided with sets of apertures h, h<1>, corresponding to the month for exhihiting selected sets of year numbers on the central disc. The year numbers are separated by gaps g, g', for taking into account leap years the inner series of numbers e being utilized for the months of January and February in leap years.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB339571A true GB339571A (en) |
Family
ID=1743691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB339571D Active GB339571A (en) |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB339571A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2173021A (en) * | 1985-03-28 | 1986-10-01 | Alvi Salimul Hassan | Calendar apparatus and method |
| GB2178560A (en) * | 1985-07-08 | 1987-02-11 | Tan Hua Yong | Perpetual calendars |
-
0
- GB GB339571D patent/GB339571A/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2173021A (en) * | 1985-03-28 | 1986-10-01 | Alvi Salimul Hassan | Calendar apparatus and method |
| GB2173021B (en) * | 1985-03-28 | 1989-06-28 | Alvi Salimul Hassan | Calendar apparatus and method |
| GB2178560A (en) * | 1985-07-08 | 1987-02-11 | Tan Hua Yong | Perpetual calendars |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB339571A (en) | ||
| US2932104A (en) | Multi-year calendars | |
| US4189853A (en) | Astrological device | |
| US2006485A (en) | Calendar | |
| US3765111A (en) | Perpetual calendar | |
| GB368046A (en) | ||
| GB609421A (en) | ||
| GB358026A (en) | ||
| FR2365173A1 (en) | Perpetual calendar including lunar cycle display - has central axis representing position of sun, and rotating discs showing earth and moon | |
| GB612083A (en) | ||
| GB570489A (en) | ||
| GB190409526A (en) | Improvements in Perpetual Calendars | |
| GB244263A (en) | ||
| GB571544A (en) | ||
| US2154013A (en) | Perpetual calendar | |
| SU684A1 (en) | Mechanical calendar | |
| CA1079067A (en) | One year calendar | |
| CN219179786U (en) | Novel clock structure | |
| GB478551A (en) | Improvements in date indicators | |
| RU9992U1 (en) | LONG-TERM CALENDAR | |
| GB558337A (en) | Improvements in and relating to perpetual calendars or date indicators | |
| GB191123510A (en) | Improvements in Calendar Blocks. | |
| US4026052A (en) | Multi-disk rotatable year calendar | |
| US1906908A (en) | Watch or clock calendar or date indicator | |
| US487929A (en) | Calendar |