Show Grease from Cotton Waste Until lately cotton waste has been cleaned and reused but the grease extracted from it has been thrown away It is now found that the oil thus extracted can be made after very simple treatment to yield first class printing ink A ton of this spent waste will yield about 1400 pounds of oil from which ink of a superi qualitycan be manufactured at a very reduced price The cotton waste is placed in steam chambers cham-bers and a solution of bisulphateof carbon is pumped into the vessels This disengages disen-gages the oil and grease which is then passed into a series of heated coppers from which it emerges as varnish from which the printing ink is made New York Commercial Com-mercial Advertiw |