Patent for an improvement on the inventor's previous patent (No. 450,657). The improvements include getting rid of the sleeve, and "employ[ing] volute springs instead of the straight flat springs formerly used; [the inventor] also dispense[s] with the links and connect the inner ends of the springs to long pitmen which have a pivotal connection with the suction rod at a point above the springs; [the inventor] furthermore provide[s] a means for adjusting the tension of the springs without altering the connection of the same with the suction rod" (lines 23-31).

Topographic map of a portion of Texas from the United States Geological Survey (USGS) project. The map includes towns, historic or notable sites, bodies of water, and other geologic features. Scale 1:125000