Abstract: A method and machine for removing naturally occurring oil from animal hides, especially pig skins, which comprises passing the hides in the condition they are in at the conclusion of the conventional curing operation, with the hair side facing downward, between a small diameter solid-surfaced roll and a much larger diameter power-driven cylinder having a resiliently yieldable surface, the cylinder being above the roll so that the hair side of the hides is in contact with the roll, and the cylinder being forced down onto the roll with sufficient pressure to cause the surface of the cylinder to conform to the curvature of the roll as it and a hide move across the roll to thereby progressively subject narrow band-like zones of the hair side of the hide alternately to compression and tension forces transversely of said zones, and before the internal structure of that portion of the hide can recover from the alternate collapse and expansion of its pores that results from the compression and stretching of its hair

Abstract: A chain conveyor advances brine soaked hides hanging from hooks on the conveyor to a wringer consisting of a pair of vertically oriented pressure loaded power-driven rolls, and draws the hides through the wringer with the lengthwise dimension of the hides substantially horizontal.