Walking beam compressor assembly

In a pumping unit having a walking beam and a stationary part, each of said walking beam and stationary part including a generally I-shaped beam member, each said beam member having a web and flanges normal to said web at opposite ends thereof, and wherein a compressor includes a cylinder and a piston with a piston rod extending from one end of said cylinder and terminating in one connecting end portion, and an opposite end of said cylinder terminates in an opposite connecting end portion, the improvement comprising:

• a non-lubricating bearing assembly in each of said connecting end portions, each said bearing assembly including an inner, generally spherical bearing member, a shaft extending through a central bore in said spherical bearing member, and an outer bearing sleeve having an inner contoured bearing surface complementary to said spherical bearing member and disposed in closely fitting, surrounding relation to said spherical bearing member;
• first coupling means for securing said one connecting end portion to said walking beam including end support members at opposite ends of said shaft, said shaft journaled to said end support members, an end plate engageable with a flat external surface of said walking beam, and clamping means for releasably clamping said end plate to said walking beam;
• and
• second coupling means for securing said opposite connecting end portion to said stationary part including end support brackets at opposite ends of said shaft, said shaft journaled to said end support members, a mounting plate engageable with said stationary part, and clamping means for releasably clamping said mounting plate to said stationary part including J-shaped ends adjustably connected to said mounting plate, said J-shaped ends each receiving one of said flanges of said stationary part whereby to retain said flanges secured against said mounting plate.