Sifter and lifter for flour and the like

Claim 1

IN A SIFTER FOR FLOUR AND THE LIKE, A STATIONARY HOPPER HAVING A BOTTOM OUTLET LOCATED IN A HORIZONTAL PLANE, A STATIONARY HOUSING BELOW SAID HOPPER, SAID HOUSING HAVING A TOP OPENING OF SUBSTANTIALLY THE SAME SIZE AS SAID HOPPER OUTLET EXTENDING IN A HORIZONTAL PLANE AND SPACED BELOW SAID HOPPER OUTLET AND IN VERTICAL REGISTRATION THEREWITH, A SLEEVE OF FLEXIBLE MATERIAL CONNECTING SAID HOPPER OUTLET AND SAID HOUSING TOP OPENING, MEANS REMOVABLY SECURING THE TOP OF SAID SLEEVE TO SAID HOPPER OUTLET, MEANS REMOVABLY SECURING THE BOTTOM OF SAID SLEEVE TO SAID HOUSING TOP OPENING, A SIFTING SCREEN POSITIONED IN SAID SLEEVE SUBSTANTIALLY MIDWAY BETWEEN THE TOP AND BOTTOM OF THE SLEEVE, AND EXTENDING IN A HORIU ZONTAL PLANE OVER THE INTERIOR OF SAID SLEEVE, MEANS FOR REMOVABLY SECURING SAID SCREEN IN PLACE IN THE CENTRAL PORTION OF SAID SLEEVE, A VIBRATING MECHANISM OUTSIEE OF SAID SLEEVE, A VIBRATING MECHANISM OUTSIDE ANISM WITH SAID CENTRAL PORTION OF SAID SLEEVE AND WITH SAID MEANS FOR SECURING SAID SCREEN IN SAID SLEEVE, WHEREBY SAID CENTRAL PORTION OF SAID SLEEVE AND THEREWITH SAID SCREEN WILL BE OSCILLATED IN THE HORIZONTAL PLANE WHILE THE UPPER AND LOWER PORTIONS OF SAID SLEEVE REMAIN STATIONARY.