Housing for motion transmission mechanism

Claim 1

An enclosing housing for use with apparatus having a framework, a motive power source having a rotating output shaft on said framework, a flexible drive between said output shaft and an intermediate shaft parallel to said output shaft and a chain drive between said intermediate shaft and a driven shaft, said housing comprising: a casing having a rear wall, a peripheral sidewall and a removable cover adapted to enclose said chain drive, said casing having an opening in said rear wall adapted to receive said driven shaft, and an elongated slot near the opposite end of said casing in said rear wall, the direction of elongation of said slot being parallel to a line joining the axis of said intermediate and said driven shafts, a bearing block for said driven shaft fixed to said rear wall adjacent to said opening, said bearing block having a cylindrical outer surface adapted to be received in a cylindrical aperture in said framework to mount said casing for pivotal movement about the axis of said driven shaft, means for attaching said casing to said framework in a fixed position of rotation about the axis of said driven shaft, a bearing block slidably attached to said rear wall adjacent to said elongated slot, said slidable bearing block being sufficiently large as to cover said elongated slot and being sufficiently larger than the extent of said slot to permit said bearing block to move through substantial distances without uncovering said slot, and means for fixing said adjustable bearing block in adjusted position with respect to said casing.