Abstract: A portable lathe for performing machining operations on a stationary member. The lathe is of split construction permitting the lathe to be mounted on the member from the side of the member. Each of the end housings have removable sections that provide a side entrance to the bores of the housings. Parallel guide ways connect the end housings and support a moveable carriage assembly. The carriage assembly rotatably supports a rotating tool holder and carrier on a unique roller arrangement simplifying construction. The carriage assembly has removable support struts and the carrier and tool holder ring are splitable which provides a side entrance to the bore of the carriage assembly. The lathe is secured and aligned to the member to be machined by adjustable jaws provided on the end housings. Twin leadscrews provide motion to the carriage assembly and reduce the twisting and deflection experienced with a single leadscrew.

Abstract: A tool for uncoupling a drive member and driven member joined together at a universal joint includes a pulling member and pushing member, both having a substantially U-shaped configuration such that they are disposed in nested relationship with the pushing member substantially surrounding the pulling member. In one embodiment, both such members are coupled together by a threaded drive member rigidly secured to the pulling member. The drive member threadably receives a nut, rotation of which causes the nut to bear against the pushing member to urge the pushing member in one direction and simultaneously urge the pulling member in the opposite direction. In operation, the pull member exerts a pulling force on an end yoke of, for example, the drive member, which seats by interference fit a press fit bearing to be removed, while the pushing member exerts a pushing force against an end yoke of the driven member.