Apparatus for Determining the Inclination and Direction of Bore Holes and the Dip and Direction of the Dip of Strata passed through by Bore Holes.

摘要

23,003. Goodman, J. Oct. 29. Clinometers; compasses, magnetic.- The slope in boreholes and the dip and direction of strata are determined by means of a compass needle h mounted on a wideangle pendulum c of aluminium &c., which pivots on an inner central pin d. Clock - work me - chanism set before lowering the clinostat, operates after a predetermined interval to lower a spring-pressed plunger on to a spherical or other cup k to clamp the needle and pendulum in position. Scrapers 4 mark the core so that this when extracted will show the lie of the strata.