GB210254A - Improvements in or relating to electric arc welding and apparatus therefor - Google Patents
Improvements in or relating to electric arc welding and apparatus thereforInfo
- Publication number
- GB210254A GB210254A GB4023A GB4023A GB210254A GB 210254 A GB210254 A GB 210254A GB 4023 A GB4023 A GB 4023A GB 4023 A GB4023 A GB 4023A GB 210254 A GB210254 A GB 210254A
- Authority
- GB
- United Kingdom
- Prior art keywords
- welding
- switch
- voltage
- circuit
- arc
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/10—Other electric circuits therefor; Protective circuits; Remote controls
- B23K9/1006—Power supply
- B23K9/1012—Power supply characterised by parts of the process
- B23K9/1031—Reduction of the arc voltage beneath the arc striking value, e.g. to zero voltage, during non-welding periods
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding Control (AREA)
Abstract
210,254. Davies, W. Langdon-, and Soames, A. Jan. 1, 1923. Systems depending on use of static transformers.-An alternating current arc welding system is provided with an automatic safety device tending to reduce the voltage when the arc is broken, in combination with a supplementary safety de vice which cuts off the current in the event of the main safety device failing to operate. In the system shown in Fig. 1 there is a working voltage source A and a low safety voltage source B, these sources constituting the secondaries of transformers whose primaries A<1>, B<1> are connected in parallel across the supply mains C. When the welding circuit is made, the coil F is energized by the secondarv B and the switch G moves over to close contacts H<1>, H<2>. The welding current is then fed from the secondary A. If, when welding is stopped, the switch G fails to return to its original position, the contact breaker K, arranged across the arc, breaks the circuit from the secondary A. In the system shown in Fig. 2, there is a working voltage secondary L and a low voltage secondary M, the primary M<1> of the latter being connected in parallel with the secondary L. A switch T operates to increase and decrease the voltage when starting and stopping the welding operation. The supplementary safety device U is fitted so as to break the circuit of the primary L, if the switch T fails to act.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4023A GB210254A (en) | 1923-01-01 | 1923-01-01 | Improvements in or relating to electric arc welding and apparatus therefor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4023A GB210254A (en) | 1923-01-01 | 1923-01-01 | Improvements in or relating to electric arc welding and apparatus therefor |
Publications (1)
Publication Number | Publication Date |
---|---|
GB210254A true GB210254A (en) | 1924-01-31 |
Family
ID=9697305
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4023A Expired GB210254A (en) | 1923-01-01 | 1923-01-01 | Improvements in or relating to electric arc welding and apparatus therefor |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB210254A (en) |
-
1923
- 1923-01-01 GB GB4023A patent/GB210254A/en not_active Expired
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB210254A (en) | Improvements in or relating to electric arc welding and apparatus therefor | |
US2331003A (en) | Remote control circuit | |
US1061377A (en) | Electric welding system. | |
SU481381A1 (en) | Device for limiting the no-load voltage of welding transformers | |
US2491961A (en) | Control system | |
US1343194A (en) | Electric-arc-welding system | |
US1933849A (en) | Electric current rectifying system | |
FR2275922A1 (en) | Phase monitor for three-phase motor - has transformers coupled one to each phase supply line and operating main protective relay | |
US1755139A (en) | Control system and apparatus | |
SU826431A1 (en) | Electromagnetic contactor control device | |
US2190527A (en) | Electric valve circuit | |
GB240574A (en) | A safety device for use with portable electrically operated machines | |
GB803534A (en) | Improvements in alternating current arc welding systems | |
GB721519A (en) | Improvements in or relating to protective arrangements for radio frequency generators | |
GB367065A (en) | Improvements in or relating to the control and protection of electrical apparatus | |
GB740411A (en) | Improvements in or relating to electric protective and control apparatus | |
GB750372A (en) | Improvements in or relating to alternating current arc welding equipment | |
GB236596A (en) | Improvements in and relating to electrical installations comprising voltage changing devices | |
GB201741A (en) | Improvements in and relating to x-ray apparatus | |
GB566204A (en) | Improvements in electric welding systems using fusible electrodes | |
GB882004A (en) | Automatic breaking of arc in arc welding | |
GB658750A (en) | Improvements in electrical circuits for use with discharge devices | |
GB277972A (en) | ||
GB596797A (en) | Electric arc welding system | |
GB612682A (en) | A control system for electric motors and other electrical apparatus comprising push button operated contactors |