Abstract: An improved magnetic filter adapter for use with removable fluid system filters. The magnetic filter adapter of the present invention includes an adaptive filter housing removably mountable to a fluid system filter, magnet means for attracting metallic particles from the fluid flow within the filter toward the interior surface of the filter external wall, and an inner magnetic-field concentrating cup for concentrating the magnetic force of said magnet means such that the potential field strength of the magnet means is optimized.

Abstract: Discloses a machine and method for drilling a horizontal bore through earth formation including a directional guide for supporting the rotating drill stem near the bore entrance to cause the drill stem to extend into the drilled bore toward a designated target. The directional guide includes a base member adapted to be supported upon the earth surface across a trench, a first guide sleeve for supporting rotatable drill stem and extending below the base member into the trench through a first riser guide member rigidly connected to the first sleeve and adjustably connected to the base member, adjustment means for connecting the first guide member to the base member to position and to support said first sleeve from said base member at a designated longitudinal distance from said base member and a designated lateral distance and rotational relation with respect to the base member.