GB144778A - Improvements in or relating to electrical cut-outs - Google Patents
Improvements in or relating to electrical cut-outsInfo
- Publication number
- GB144778A GB144778A GB634319A GB634319A GB144778A GB 144778 A GB144778 A GB 144778A GB 634319 A GB634319 A GB 634319A GB 634319 A GB634319 A GB 634319A GB 144778 A GB144778 A GB 144778A
- Authority
- GB
- United Kingdom
- Prior art keywords
- contact
- arm
- bolt
- cut
- boss
- 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
- H01H35/00—Switches operated by change of a physical condition
- H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
- H01H35/34—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow actuated by diaphragm
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
144,778. Frost & Co., H., and Welch, W. H. March 13, 1919. Thermostats.-An electric cut-out comprising a resilient contact-arm A adapted to be moved away from a fixed contact B can be made repetitive or not at will by means of a bolt D which is slidably mounted in the walls of the casing C and can be made to bear at its inner end, under the control of a spring D', against the free end of the contact-arm A. When the arm A is moved away from the contact B, the bolt D slides under the end of the contact arm in order to prevent the circuit from closing again. The bolt carries a pin D' adapted to move in a slot in a boss C'. When it is desired to make the cut-out repetitive, the bolt is withdrawn and given a partial turn by means of a knob D<3> so that the pin D' lies across the face of the boss C'. The cut out is actuated by a pressure-operated diaphragm as described in Specification 144,777, and is particularly applicable for use with electrically-heated portable vulcanizers for tyre repairs, either for preventing the temperature from rising above a predetermined limit when the apparatus is in continual use, or for cutting out the heating means permanently and allowing the parts to cool down as soon as the temperature reaches the predetermined limit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB634319A GB144778A (en) | 1919-03-13 | 1919-03-13 | Improvements in or relating to electrical cut-outs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB634319A GB144778A (en) | 1919-03-13 | 1919-03-13 | Improvements in or relating to electrical cut-outs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB144778A true GB144778A (en) | 1920-06-14 |
Family
ID=9812750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB634319A Expired GB144778A (en) | 1919-03-13 | 1919-03-13 | Improvements in or relating to electrical cut-outs |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB144778A (en) |
-
1919
- 1919-03-13 GB GB634319A patent/GB144778A/en not_active Expired
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