Abstract: In an oil well pump, a rod liner is clamped onto a polished rod using an external clamp with an upper clamp section that clamps onto the polished rod, a lower clamp section that clamps onto the liner below the liner head and a yoke section bridging the upper and lower clamp section. In the preferred embodiment, the clamp has a main body extending across the liner head and upper and lower clamping blocks for clamping the rod and the liner respectively to the main body on opposite sides of the liner head.

Abstract: The table knife and reel assemblies of a swather are bolted to a main mounting beam which in turn is mounted on a pair of double wheel assemblies one each adjacent each end thereof. The hitch pole from the tractor or other source of power is pivotally secured adjacent one end of said main mounting beam. In the hydraulic embodiment, piston and cylinder assemblies move the pole and the wheels between the field and transport positions and in the mechanical embodiment, linkage is provided between the pole and the wheel assemblies and the pole is moved by the tractor. In the hydraulic embodiment, a sequencing valve may be provided in conjunction with the table adjusting piston and cylinder which operates the piston and cylinder controlling the wheels when the table is raised and lowered between the field and transport positions.