Light weight trusses and apparatus for the fabricating of same

Claim 1

A MACHINE FOR FABRICATING AUTOMATICALLY A LIGHT WEIGHT TRUSS HAVING A PAIR OF CHORDS OF STRIP MATERIAL AND A WIRE WEB WELDED TO THE SAID CHORDS, THE SAID MACHINE COMPRISING A PAIR OF COLD FORMING UNITS TO SHAPE THE SAID CHORDS FROM A CONTINUOUS STRIP OF MATERIAL, THE SAID COLD FORMING UNITS BEING LOCATED ON EITHER SIDE OF THE CENTRE LINE OF THE MACHINE, A WEB BENDER ON SAID CENTRE LINE OF THE MACHINE, THE SAID WEB BENDER HAVING A SERIES OF SLIDABLE TONGUES ADAPTED TO BEND THE SAID WIRE WEB INTO A CONTINUOUS SERIES OF V SHAPES IN THE PLANE OF SAID PAIR OF CHORDS, MEANS TO GUIDE THE SAID CHORDS INTO JUXTAPOSED RELATION WITH THE APICES OF THE SAID V SHAPED FORMED WEB, A DRIVE FOR SAID WEB BENDER AND SAID COLD FORMING UNITS, THE SAID DRIVE CONTINUOUSLY MOVING THE SAID PAIR OF CHORDS THROUGH THE SAID MACHINE, A PAIR OF RESISTANCE WELDING MEANS LOCATED BEYOND THE SAID WEB BENDER, THE SAID WELDING MEANS WELDING THE APIECES OF THE SAID V SHAPED WEB TO THE SAID PAIR OF CHORDS, A CARRIAGE ON WHICH THE SAID WELDING MEANS ARE MOUNTED, MEANS ASSOCIATED WITH SAID CARRIAGE TO ADVANCE THE CARRIAGE DURING THE WELDING OPERATION BETWEEN PAIRS OF OPPOSING POINTS OF SAID WEB AND THE ADJACENT CHORDS, MEANS FOR DISCONNECTING SAID CARRIAGE ADVANCING MEANS FROM THE SAID DRIVE WHEN THE WELDING OPERATION IS COMPLETE, AND MEANS TO RETURN THE SAID CARRIAGE WHEN THE SAID CARRIAGE IS DISCONNECTED FROM THE DRIVE MEANS FOR THE START OF ANOTHER WELDING CYCLE.