GB1529570A - Machine for use in teaching the manner in which a clock indicates time - Google Patents
Machine for use in teaching the manner in which a clock indicates timeInfo
- Publication number
- GB1529570A GB1529570A GB4844075A GB4844075A GB1529570A GB 1529570 A GB1529570 A GB 1529570A GB 4844075 A GB4844075 A GB 4844075A GB 4844075 A GB4844075 A GB 4844075A GB 1529570 A GB1529570 A GB 1529570A
- Authority
- GB
- United Kingdom
- Prior art keywords
- hands
- minute
- drums
- hour
- gearing
- 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
- G09B19/12—Clock-reading
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
1529570 Educational appliances TOMY KOGYO CO Inc 25 Nov 1975 48440/75 Heading G5J A device for teaching the telling of time comprises a clock face 14 with hour 50 and minute 28 hands mechanically connected to corresponding hour 76 and minute 66 drums, having numerals thereon, which drums thereby rotate with said hands to present the numerical value, through openings in the front of the device housing, of the time indicated by the position of said hands, a cover 84 being provided to optionally allow the viewing of said numerals. The hour and minute hands, which are preferably mounted respectively on outer 22 and inner 16 shafts, may be connected by gearing, Fig. 4 (and Fig. 3, not shown). The hour and minute drums may also be connected together by gearing so that only a single rotatable connecting member 52 is needed between the hands and the drums. The gearing of the drums is preferably such that the hour drum only moves once per revolution of the minute drum. Rotation of the hands may be performed using a lever 114 which operates a pawl 128 and ratchet 38 mechanism, or by using a handle 34 connected to the minute hand. The cover is preferably operated by a lever 100.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4844075A GB1529570A (en) | 1975-11-25 | 1975-11-25 | Machine for use in teaching the manner in which a clock indicates time |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4844075A GB1529570A (en) | 1975-11-25 | 1975-11-25 | Machine for use in teaching the manner in which a clock indicates time |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1529570A true GB1529570A (en) | 1978-10-25 |
Family
ID=10448617
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4844075A Expired GB1529570A (en) | 1975-11-25 | 1975-11-25 | Machine for use in teaching the manner in which a clock indicates time |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1529570A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2235080A (en) * | 1989-07-01 | 1991-02-20 | Helix Group Plc | Teaching clock reading |
GB2243938A (en) * | 1990-05-11 | 1991-11-13 | Invicta Plastics Ltd | Educational aid |
-
1975
- 1975-11-25 GB GB4844075A patent/GB1529570A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2235080A (en) * | 1989-07-01 | 1991-02-20 | Helix Group Plc | Teaching clock reading |
GB2243938A (en) * | 1990-05-11 | 1991-11-13 | Invicta Plastics Ltd | Educational aid |
GB2243938B (en) * | 1990-05-11 | 1993-12-08 | Invicta Plastics Ltd | Educational aid |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PE20 | Patent expired after termination of 20 years |
Effective date: 19951124 |