Electric resistance welding apparatus

Details Electric resistance welding apparatus Electric resistance welding apparatus

1983-10-31

1985-05-14

Envall, Jr., Roy N.

Electric heating

Metal heating

For bonding with pressure

219 8625, B23K 1110

Patent

active

045174350

ABSTRACT:
A scissors-type electric welding apparatus is provided which has a transformer, a pair of electrodes, a pair of first arms movably mounted on the transformer, an electrically insulated articulation shaft, and a pneumatic jack. A pair of second arms are pivotably connected to the articulation shaft. The second arms support the electrodes on one end and are connected to the jack on the other end in order to move the electrodes apart to position the electrodes for welding workpieces. The electrodes are electrically connected to the first arms through the second arms. Each second arm includes a contact member mounted on the articulation shaft. Each first arm includes a free end which carries a contact shoe for interacting with a contact member. A biasing member is provided for urging the contact shoes against the contact members.

REFERENCES:
patent: 1645705 (1927-10-01), Lewinka
patent: 2341459 (1944-02-01), Martin
patent: 3320400 (1967-05-01), Leathers
patent: 4410782 (1983-10-01), Konno et al.

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