Journal of the Royal Society of ArtsThe performances were a species of religious ceremonial ; they commenced with  identical with the modern pit; the altar in front of the stage, called the Ovus\s,  was delivered at the Watt Institute, by Mr. J. Spence, “On the Screw Propeller.  S. and S. V. Abraham, Lisle street—Communicating information to persons in Screwdown Bearings Types TTHDSX/SV TTHDFLSX/SVBoth types consist of a full roller complement design without a conventional bore. Screw down tapered thrust bearings offer the highest capacity of the v-flat 
thrust tapered roller bearings - Timkencapabilities, the Timken® Type E is your recommended solution.  SV. Spherical concave ring outer profile. SX. Spherical convex ring outer profile. W. Oil slots  They are commonly known as screw down bearings in the metals industryThrust Screw Down Tapered Roller Bearing | The TimkenScrew down tapered thrust bearings offer the highest capacity of the v-flat bearing types, but at a reduced speed capability. Size ranges: 35 mm to 2940 mm (13.75