Material forming method and apparatus

Claim 1

APPARATUS FOR INCREASING THE LENGTH AND UNIFORMLY REDUCING THE THICKNESS OF METAL STRIP, SHEET OR FOIL STOCK WHICH COMPRISES A FRAME, A FIRST BENDING ROLL JOURNALED IN THE FRAME, A FIRST CONTACT ROLL ROTATABLY SUPPORTED ADJACENT TO THE FIRST BENDING ROLL FOR PRESSING ENGAGEMENT WITH THE STOCK ACROSS ITS WIDTH AS THE STOCK FIRST ENGAGES THE SAID FIRST BENDING ROLL, A SECOND CONTACT ROLL ROTATABLY SUPPORTED ADJACENT TO THE FIRST BENDING ROLL AND POSITIONED FOR PRESSING ENGAGEMENT WITH THE STOCK ACROSS THE WIDTH OF THE STOCK AS THE STOCK LEAVES THE FIRST BENDING ROLL, A SECOND BENDING ROLL JOURNALED IN THE FRAME IN RADIAL SPACED RELATION TO THE FIRST BENDING ROLL, A THIRD CONTACT ROLL ROTATABLY SUPPORTED ADJACENT TO THE SECOND BENDING ROLL FOR PRESSING ENGAGEMENT WITH THE STOCK ACROSS ITS WIDTH AS THE STOCK FIRST ENGAGES THE SECOND BENDING ROLL, A FOURTH CONTACT ROLL ROTATABLY SUPPORTED ADJACENT TO THE SECOND BENDING ROLL WITH ITS AXIS SUBSTANTIALLY PARALLELING THAT OF SAID SECOND BENDING ROLL AND LOCATED TO PRESS THE STOCK AGAINST THE SECOND BENDING ROLL AT THE POINT WHERE THE STOCK IS HAVING ENGAGEMENT WITH THE SAID SECOND BENDING ROLL, MEANS INCLUDING A LEVER MOVABLY SUPPORTED BY THE FRAME AND OPERABLY ASSOCIATED WITH THE FOUR CONTACT ROLLS FOR SIMULTANEOUSLY ADJUSTING THE PORTIONS OF THE CONTACT ROLLS RELATIVE TO THE BENDING ROLLS TO REGULATE THE CONTACT ROLL PRESSURE APPLIED TO THE STOCK, AND MEANS FOR RUNNING THE STOCK BACK AND FORTH AROUND THE BENDING ROLLS AND MAINTAINING THE STOCK IN TENSION IN ITS TRAVEL AROUND THE BETWEEN THE BENDING ROLLS.

Claim 3

THE METHOD OF COLD WORKING A METALK STRIP AND THEREBY REDUCING THE THICKNESS AND INCREASING THE LENGTH OF THE STRIP WHICH COMPRISES THE STEPS OF ADVANCING THE STRIP ALONG A TRAVEL COURSE AND OVERCOMING THE YIELD POINT OF SUCCESSIVE PORTIONS OF THE STRIP BY PLASTICALLY BENDING THE STRIP AT A FIRST BENDING LOCATION, SIMULTANEOUSLY SUBJECTING THE SUCCESSIVE PORTIONS OF THE STRIP TO TENSION STRESS AND TO COMPRESSION FORCE SUFFICIENT IN COMBINATION WITH SAID PLASTIC BENDING TO REDUCE THE THICKNESS OF THE STRIP

Claim 4

THE METHOD OF COLD WORKING A METALK STRIP AND THEREBY REDUCING THE THICKNESS AND INCREASING THE LENGTH OF THE STRIP WHICH COMPRISES THE STEPS OF ADVANCING THE STRIP ALONG A TRAVEL COURSE AND OVERCOMING THE YIELD POINT OF SUCCESSIVE PORTIONS OF THE STRIP BY PLASTICALLY BENDING THE STRIP AT A FIRST BENDING LOCATION, SIMULTANEOUSLY SUBJECTING THE SUCCESSIVE PORTIONS OF THE STRIP TO TENSION STRESS AND TO COMPRESSION FORCE SUFFICIENT IN COMBINATION WITH SAID PLASTIC BENDING TO REDUCE THE THICKNESS OF THE STRIP