GB1233267A - - Google Patents
Info
- Publication number
- GB1233267A GB1233267A GB1233267DA GB1233267A GB 1233267 A GB1233267 A GB 1233267A GB 1233267D A GB1233267D A GB 1233267DA GB 1233267 A GB1233267 A GB 1233267A
- Authority
- GB
- United Kingdom
- Prior art keywords
- relay
- contacts
- arc
- contact
- welding process
- 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
- B23K9/007—Spot arc welding
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding Control (AREA)
Abstract
1,233,267. Arc spot welding systems. MESSER GRIESHEIM G.m.b.H. 14 June, 1968 [15 June, 1967], No. 28365/68. Heading H2H. Arc welding apparatus comprises means for terminating the welding process after a predetermined time interval, the means forming a short circuit in parallel with the arc which is completed at the desired moment. The arc welding process may be used in spot welding apparatus having an electrode 15 and workpiece 16 which are supplied from an A.C. source 13 over contacts 11 and a transformer/rectifier unit 10. The contacts 11 are closed by a relay 12 which is energized by closure of a push button 14, the contacts 11 also forming a self-holding contact for the relay. Closure of a contact 19 by a current relay 18 energizes a time delay relay 20 which, after a time required by the welding process, closes a contact 21 to apply a signal to the gate of a thyristor 27 which becomes conductive to short circuit the electrode 15 and workpiece 16 thereby extinguishing the arc. Conduction of the thyristor 27 also energizes a current relay 30 which causes contacts 29 to open thus de-energizing relay 12 to open contacts 11 to reset the apparatus for the following operation.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEM0074390 | 1967-06-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1233267A true GB1233267A (en) | 1971-05-26 |
Family
ID=7315631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1233267D Expired GB1233267A (en) | 1967-06-15 | 1968-06-14 |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE1690605C3 (en) |
| FR (1) | FR1573318A (en) |
| GB (1) | GB1233267A (en) |
| NO (1) | NO126422B (en) |
-
1967
- 1967-06-15 DE DE19671690605 patent/DE1690605C3/en not_active Expired
-
1968
- 1968-06-11 FR FR1573318D patent/FR1573318A/fr not_active Expired
- 1968-06-13 NO NO230668A patent/NO126422B/no unknown
- 1968-06-14 GB GB1233267D patent/GB1233267A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1573318A (en) | 1969-07-04 |
| DE1690605C3 (en) | 1975-03-27 |
| NO126422B (en) | 1973-02-05 |
| DE1690605A1 (en) | 1971-05-27 |
| DE1690605B2 (en) | 1974-07-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |