How to build a Spiral Chute | BulkInsideMar 2, 2016 . A spiral chute is especially useful in eliminating product breakage and dust . In creating the design, factors to consider are the material density,.how to design spiral chute,Patent US3566501 - Method of making spiral chute - Google PatentsMar 2, 1971 . Marcbiz, 1971 D. M. WINCHESTER 3,566,501. METHOD OF MAKING SPIRAL CHUTE- Filed Ju ne 5, 1969 3 Sheets-Sheet l INVENTOR.