Abstract: This patent relates to pillow blocks, which are constructed to include one or more roller bearings disposed in tangential relation to the primary shaft at one or more positions around its periphery. Each roller bearing is mounted to rotate about its own stud, so that it acts as a cam follower. In some embodiments the roller bearings are disposed singly, or in pairs, in three positions spaced-apart 120 degrees around the periphery of the shaft. A particular feature of the invention is a device for fine tuning the tangential contact between a roller and the surface of the primary shaft by utilizing a flexible bearing support plate supporting at least one bearing. The plate can move radially to control the radial distance of the bearing.

Abstract: This patent relates to roller bearing self-aligning pillow blocks, which are constructed to include one or more sealed roller bearings disposed in tangential relation to the primary shaft at one or more positions around its periphery. Each roller bearing is mounted to rotate about its own stud, so that it acts as a cam follower. In some embodiments the roller bearings are disposed singly, or in pairs, in three positions spaced-apart 120 degrees around the periphery of the shaft. In other embodiments the bearings disposed to the right or the left of the center are in diametrically-opposite positions. Alternatively, in another embodiment, the rollers are disposed only in contact with the upper surface of the shaft at positions spaced-apart, say, 45 degrees.

Abstract: A method and apparatus for compensating for inaccuracy between a pair of aligned shafts attached to a slide assembly for a linear reciprocating carriage. This comprises pillow blocks mounted to the carriage and held in place by the use of intermeshing gibs. These gibs are so situated as to provide a tolerance between them, which permits the respective pillow blocks to move between the gibs to compensate for misalignment of the shafts.