Manufacture of glue and gelatin

Claim 1

A PROCESS OF THE MANUFACTURE OF GELATINE MATERIAL WHICH COMPRISES WASHING A QUANTITY OF SOLID PARTICLES OF COLLAGEN CONTAINING MATERIAL WITH AN AQUEOUS WASH LIQUOR, CAUSING CIRCULATION OF THE WASH LIQUOR THROUGHOUT SAID PARTICLES BY EJECTING A STREAM OF AIR AT RELATIVELY HIGH VELOCITY INTO A MINOR PORTION OF THE TOTAL WASH LIQUOR WITH SAID MINOR PORTION FREE TO FLOW ONLY IN A VERTICAL PATH OUT OF CONTACT WITH THE REMAINDER OF THE LIQUOR UNITL SAID LIQUOR PORTION HAS REACHED AN UPWARD LEVEL ABOVE THE LEVEL OF THE REMAINDER OF THE LIQUOR AFTER WHICH SAID LIQUOR PORTION MAY CONTACT SAID PARTICLES AND THE REMAINDER OF SAID LIQUOR, PERMITTING FURTHER PORTIONS OF SAID LIQUOR TO REPLACE THE FIRST-NAMED PORTIONS WHICH FLOW THROUGH SAID CONFINED VERTICAL PATH, CONTINUING THE CIRCULATION OF WASHING LIQUOR UNTIL THE PARTICLES OF COLLAGEN MATERIAL ARE FREED OF SUBSTANTIALLY ALL MATERIAL WHICH MAY BE REMOVED THEREFROM BY COLD WATER WASHING, REMOVING THE WASH LIQUOR FROM CONTACT WITH THE COLLAGEN MATERIAL, CONTACTING THE WASHED COLLAGEN PARTICLES WITH AN AQUEOUS COOKING LIQUOR, CAUSING SAID COOKNG LIQUOR TO BE HEATED AND SIMULTANEOUSLY CIRCULATED THROUGHOUT SAID PARTICLES BY EJECTING A STREAM OF STEAM INTO A MINOR PORTIONOF SAID COOKING LIQUOR IN THE MANNER AFORESAID FOR SAID AIR STREAM WITH SAID WASHING LIQUOR, CONTINUING SAID CIRCULATION OF HEATED COOKING LIQUOR THROUGHOUT SAID PARTICLES UNTIL A SOLUTION OF APPRECIABLE SOLID CONCENTRATION FREE OF ANY DISSOLVED BLOOD IS OBTAINED, AND THEN REMOVING THE RESULTING SOLUTION FROM CONTACT WITH SAID PARTICLES.