Apparatus for producing a girder

Claim 1

AN APPARATUS FOR CONTINUOUSLY PRODUCING A CONCRETE REINFORCING GIRDER HAVING A STRAIGHT LONGITUDINAL BOOM AND TWO UNDULATING STRUTS CONNECTED TO THE BOOM AT AN ACUTE ANGLE TO EACH OTHER, THE BOOM AND THE STRUTS CONSISTING OF ELONGATED METAL MEMBERS, COMPRISING (A) A SUPPLY OF THREE LENGTHS OF SAID ELONGATED METAL MEMBERS, (B) GUIDE MEANS DIRECTING THE METAL MEMBERS FROM THE SUPPLY TO A BENDING STATION, THE GUIDE MEANS BEING ARRANGED TO DIRECT ONE OF THE METAL MEMBERS CONSTITUTING THE STRAIGHT BOOM CENTRALLY BETWEEN A PAIR OF SAID METAL MEMBERS CONSTITUTING THE STRUTS AND IN A PLANE SPACED FROM THE STRUTS, (C) MEANS FOR FEEDING THE METAL MEMBERS TO, AND THROUGH, THE BENDING STATION, (D) BENDING MEANS AT THE BENDING STATION FOR BENDING THE STRUTS INTO UNDULATING CONFIGURATION, THE BENDING MEANS INCLUDING (1) A PLURALITY OF SUCCESSIVE BELL-CRANK LEVERS ASSOCCIATED WITH EACH OF THE STRUTS, EACH OF SAID BELLCRANK LEVERS HAVING TWO LIMBS, (2) A PIVOT EXTENDING TRANSVERSELY OF THE DIRECTION OF MOVEMENT OF SAID METAL MEMBERS MOUNTING EACH OF SAID BELL-CRANK LEVERS FOR PIV OTING AND THE LIMBS EXTENDING FROM THE PIVOT AT AN ANGLE TO EACH OTHER, (3) MEANS FOR DISPLACING THE PIVOTS IN SAID DIRECTION, (4) RODS LINKING AN END ONE OF THE LIMBS OF EACH BELL-CRANK LEVER TO THE PIVOT OF A SUCCESSIVE ONE OF SAID LEVERS, (5) A LINK INTERCONNECTING THE ENDS OF THE OTHER LIMBS OF SAID BELL-CRANK LEVERS, SAID OTHER LIMB ENDS BEING MOVABLE IN SUCCESSIVE SLOTS IN SAID LINK (6) MEANS FOR PUSHING SUCCESSIVE ONE OF SAID OTHER LIMB ENDS IN SAID SUCCESSIVE SLOTS IN SAID DIRECTION, AND (7) MEANS FOR HOLDING INTERMEDIATE PORTIONS OF THE STRUTS AT SAID PIVOTS DURING PIVOTING OF THE BELL CRANK LEVERS, (E) MEANS FOR ADVANCING THE STRAIGHT BOOM AND THE UNDULATING STRUTS TO A WELDING ZONE, AND (F) WELDING STRUTS TO A WELDING ZONE, AND APICES OF THE UNDULATING STRUTS TO THE STRAIGHT BOOM.

Claim 2

AN APPARATUS FOR CONTINUOUSLY PRODUCING A CONCRETE REINFORCING GIRDER HAVING A STRAIGHT LONGITUDINAL BOOM AND TWO UNDULATING STRUTS CONNECTED TO THE BOOM AT AN ACUTE ANGLE TO EACH OTHER, THE BOOM AND THE STRUTS CONSISTING OF ELONGATED METAL MEMBERS, COMPRISING (A) A SUPPLY OF THREE LENGTHS OF SAID ELONGATED METAL MEMBERS, (B) GUIDE MEANS DIRECTING THE METAL MEMBERS FROM THE SUPPLY TO A BENDING STATION, THE GUIDE MEANS BEING ARRANGED TO DIRECT ONE OF THE METAL MEMBERS CONSTITUTING THE STRAIGHT BOOM CENTRALLY BETWEEN A PAIR OF SAID METAL MEMBERS CONSTITUTING THE STRUTS AND IN A PLANE SPACED FROM THE STRUTS, (C) MEANS FOR FEEDING THE METAL MEMBERS TO, AND THROUGH, THE BENDING STATION, (D) BENDING MEANS AT THE BENDING STATION FOR BENDING THE STRUTS INTO UNDULATING CONFIGURATION, THE BENDING MEANS INCLUDING (1) A PLURALITY OF SUCCESSIVE BELL-CRANK LEVERS ASSOCCIATED WITH EACH OF THE STRUTS, EACH OF SAID BELLCRANK LEVERS HAVING TWO LIMBS, (2) A PIVOT EXTENDING TRANSVERSELY OF THE DIRECTION OF MOVEMENT OF SAID METAL MEMBERS MOUNTING EACH OF SAID BELL-CRANK LEVERS FOR PIV OTING AND THE LIMBS EXTENDING FROM THE PIVOT AT AN ANGLE TO EACH OTHER, (3) MEANS FOR DISPLACING THE PIVOTS IN SAID DIRECTION, (4) RODS LINKING AN END ONE OF THE LIMBS OF EACH BELL-CRANK LEVER TO THE PIVOT OF A SUCCESSIVE ONE OF SAID LEVERS, (5) A LINK INTERCONNECTING THE ENDS OF THE OTHER LIMBS OF SAID BELL-CRANK LEVERS, SAID OTHER LIMB ENDS BEING MOVABLE IN SUCCESSIVE SLOTS IN SAID LINK (6) MEANS FOR PUSHING SUCCESSIVE ONE OF SAID OTHER LIMB ENDS IN SAID SUCCESSIVE SLOTS IN SAID DIRECTION, AND (7) MEANS FOR HOLDING INTERMEDIATE PORTIONS OF THE STRUTS AT SAID PIVOTS DURING PIVOTING OF THE BELL CRANK LEVERS, (E) MEANS FOR ADVANCING THE STRAIGHT BOOM AND THE UNDULATING STRUTS TO A WELDING ZONE, AND (F) WELDING STRUTS TO A WELDING ZONE, AND APICES OF THE UNDULATING STRUTS TO THE STRAIGHT BOOM.