Keywords: Lubricated pulley.jpg en Self-lubricating pulley invention http //www google com/patents id CMpnAAAAEBAJ pg PA1 dq CB+King as_drrb_is b as_minm_is 1 as_miny_is 1900 as_maxm_is 12 as_maxy_is 1910 source gbs_selected_pages cad 1 v onepage q CB 20King f false United States Patent Office 1905 PD-USGov U S Patent drawings |