GB1462624A - Time switch - Google Patents
Time switchInfo
- Publication number
- GB1462624A GB1462624A GB1402773A GB1402773A GB1462624A GB 1462624 A GB1462624 A GB 1462624A GB 1402773 A GB1402773 A GB 1402773A GB 1402773 A GB1402773 A GB 1402773A GB 1462624 A GB1462624 A GB 1462624A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cam
- shoulder
- cams
- advance
- thumbwheel
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H43/00—Time or time-programme switches providing a choice of time-intervals for executing one or more switching actions and automatically terminating their operations after the programme is completed
- H01H43/02—Details
Landscapes
- Portable Nailing Machines And Staplers (AREA)
- Transmission Devices (AREA)
Abstract
1462624 Time switches UNITED GAS INDUSTRIES Ltd 6 March 1974 [23 March 1973] 14027/73 Heading H1N A programme switching device comprises a timing drive connected to rotate two or more rotatable cams for operating respective switch means the driving connection allowing each cam to be manually advanced independently of the other cam or cams so as to advance, for a period of time, the operation of the respective switch means, the advanced cam or cams being disconnected from the timing drive during the advance period. Preferably each cam has a thumbwheel for manual advancement, and the driving connection preferably comprises a member with a shoulder which engages in an arcuate cut-out in the cam, said cut-out being of greater angular extend than said shoulder thereby allowing lost motion movement of said cam in advance of the shoulder, the cam then remaining stationary until the shoulder "catches up" and normal timed operation is automatically resumed. As shown, a synchronous motor 13 drives a time dial 15 carrying four adjustable tappets 16 each having a depending leg 17 to step an actuator 19 through 45 degrees. Actuator 19 is rigidly secured on one end of a spindle 22 which carries two pairs of cams 28, 29, each pair being integral with a respective thumbwheel 30 and actuating two respective microswitches 31, 32 (and 34, 35, Fig. 2, not shown). Resilient arms (44, Fig. 2, not shown) locate the eight positions of the cams. The shaft 22 may have a shoulder (40, Fig. 7, not shown) engaged in arcuate cut-out (41) to provide the lost-motion drive, or a washer (50, Fig. 11, not shown) mating on a flat on shaft 22 and having two arms (51, 52) may constitute shoulders which engage end wall (53) of an indented "cutout" in the associated cam. Neon lights 38, 39 indicate when respective circuits are operative.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1402773A GB1462624A (en) | 1973-03-23 | 1973-03-23 | Time switch |
NL7402527A NL7402527A (en) | 1973-03-13 | 1974-02-25 | |
FR7408186A FR2221804B3 (en) | 1973-03-13 | 1974-03-11 | |
DE19742411938 DE2411938A1 (en) | 1973-03-13 | 1974-03-13 | PROGRAM SWITCH |
IT4943674A IT1003825B (en) | 1973-03-13 | 1974-03-21 | PRO GRAM SWITCHING DEVICE PARTICULARLY FOR CENTRAL HEATING SYSTEMS |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1402773A GB1462624A (en) | 1973-03-23 | 1973-03-23 | Time switch |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1462624A true GB1462624A (en) | 1977-01-26 |
Family
ID=10033667
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1402773A Expired GB1462624A (en) | 1973-03-13 | 1973-03-23 | Time switch |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1462624A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2267782A (en) * | 1992-06-12 | 1993-12-15 | Grasslin Far East Corp | Timer |
-
1973
- 1973-03-23 GB GB1402773A patent/GB1462624A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2267782A (en) * | 1992-06-12 | 1993-12-15 | Grasslin Far East Corp | Timer |
GB2267782B (en) * | 1992-06-12 | 1996-04-03 | Grasslin Far East Corp | Timer |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |