Process of manufacturing wrought-iron lattices

Details Process of manufacturing wrought-iron lattices Process of manufacturing wrought-iron lattices

1975-11-28

1976-12-07

Moon, Charlie T.

Electric heating

Metal heating

Wire, rod, or bar bonding

2924356, 29509, 29515, 140 93D, 256 45, B23K 100, B23K 900, B23K 1100, B23K 1500

Patent

active

039958701

ABSTRACT:
Pre-shaped wrought-iron rods are placed one beside another in a lattice array, in which node-forming portions of adjacent rods are disclosed close to each other at a plurality of node positions. All node-forming portions at each of said node positions are inserted into a U-shaped strip metal element having an inwardly protruding longitudinal rib. Each of said strip metal elements is joined to said node-forming portions inserted therein by a projection welding operation in which said rib is used as a projection. Each of said strip metal elements is subsequently closed to form a closed clip embracing said node-forming portions joined thereto.

REFERENCES:
patent: 386124 (1888-07-01), Hainsworth
patent: 1552269 (1925-09-01), Brocker
patent: 1705821 (1929-03-01), Lehmann et al.
patent: 2238779 (1941-04-01), Mosebach
patent: 2345641 (1944-04-01), Van Sant
patent: 2461030 (1949-02-01), Brickman
patent: 2972791 (1961-02-01), Kelem
patent: 3503119 (1970-03-01), Seitz et al.
patent: 3592998 (1971-07-01), Derclaye

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