GB708931A - Improvements in and relating to electric switches, responsive to the stoppage of driven machines - Google Patents
Improvements in and relating to electric switches, responsive to the stoppage of driven machinesInfo
- Publication number
- GB708931A GB708931A GB1152951A GB1152951A GB708931A GB 708931 A GB708931 A GB 708931A GB 1152951 A GB1152951 A GB 1152951A GB 1152951 A GB1152951 A GB 1152951A GB 708931 A GB708931 A GB 708931A
- Authority
- GB
- United Kingdom
- Prior art keywords
- switches
- conveyer
- stoppage
- operated
- break
- 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
- H01H29/00—Switches having at least one liquid contact
- H01H29/20—Switches having at least one liquid contact operated by tilting contact-liquid container
Landscapes
- Intermediate Stations On Conveyors (AREA)
- Control Of Conveyors (AREA)
Abstract
708,931. Actuation of switches; control of motors. IMPERIAL CHEMICAL INDUSTRIES, Ltd. May 16, 1952 [May 17, 1951], No. 11529/51. Classes 38(3) and 38(5) In an arrangement particularly adapted for controlling two conveyers wherein the second conveyer is fed with material from the first and must be in operation before and during the operation of the first and wherein stoppage of the second conveyer automatically brings about a stoppage of the first, two switches 16 each having a quick make and slow break are arranged in series and are operated to the " on " position by periodic mechanical or electrical impulses, produced by the operation of the second conveyer and arriving at intervals shorter than the delay times of the switches so that the switches remain permanently closed so long as the conveyer is in operation. Should the second conveyer stop at least one switch 16 will open, Fig. 2, and break the circuit to the solenoid 15 controlling a contactor, whereupon the motor 9 driving the first conveyer is disconnected from the line 10. The switches 16 may be mercury switches 3, Fig. 1, operated by cams 6 on a shaft 5 driven by the second conveyer. Alternatively the switches may be electromagnetic relays, operated by electrical impulses and having a delayed break produced by clockwork or the charging of a condenser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1152951A GB708931A (en) | 1951-05-17 | 1951-05-17 | Improvements in and relating to electric switches, responsive to the stoppage of driven machines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1152951A GB708931A (en) | 1951-05-17 | 1951-05-17 | Improvements in and relating to electric switches, responsive to the stoppage of driven machines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB708931A true GB708931A (en) | 1954-05-12 |
Family
ID=9987907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1152951A Expired GB708931A (en) | 1951-05-17 | 1951-05-17 | Improvements in and relating to electric switches, responsive to the stoppage of driven machines |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB708931A (en) |
-
1951
- 1951-05-17 GB GB1152951A patent/GB708931A/en not_active Expired
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