GB318150A - Toy slide rule - Google Patents
Toy slide ruleInfo
- Publication number
- GB318150A GB318150A GB24692/29A GB2469229A GB318150A GB 318150 A GB318150 A GB 318150A GB 24692/29 A GB24692/29 A GB 24692/29A GB 2469229 A GB2469229 A GB 2469229A GB 318150 A GB318150 A GB 318150A
- Authority
- GB
- United Kingdom
- Prior art keywords
- guide
- slide
- division
- numbered
- divisions
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B19/00—Teaching not covered by other main groups of this subclass
- G09B19/02—Counting; Calculating
Landscapes
- Business, Economics & Management (AREA)
- Engineering & Computer Science (AREA)
- Entrepreneurship & Innovation (AREA)
- Physics & Mathematics (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Toys (AREA)
Abstract
318,150. Bourgeois, F. J. Aug. 28, 1928, [Convention date]. Void [Published under Sect. 91 of the Acts]. Adding and subtracting apparatus. - A device for use by children consists of a slide displaceable relatively to a guide. Upon the guide are ten equal dimensions numbered from 1 to 10, and upon the slide are ten corresponding equal divisions numbered from 10 to 1, the arrangement being such that any division on the slide can be brought opposite to any division on the guide. At the rear of the guide is an aperture through which can be seen a scale inscribed on the rear of the slide, this scale-being such that it indicates the sum of each pair of figures opposite each other on the upper part of the device. The numbers in the divisions may be accompanied by representations of various objects. It is stated that the device may be arranged to effect subtractions.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR318150X | 1928-08-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB318150A true GB318150A (en) | 1930-06-26 |
Family
ID=8889789
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB24692/29A Expired GB318150A (en) | 1928-08-28 | 1929-08-13 | Toy slide rule |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB318150A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2321985A (en) * | 1997-02-05 | 1998-08-12 | Agamemnon Charal Hadjigeorgiou | Slide rule |
-
1929
- 1929-08-13 GB GB24692/29A patent/GB318150A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2321985A (en) * | 1997-02-05 | 1998-08-12 | Agamemnon Charal Hadjigeorgiou | Slide rule |
GB2321985B (en) * | 1997-02-05 | 2001-09-05 | Agamemnon Charal Hadjigeorgiou | Slide rule |
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