Abstract: A boring head is provided for use in mounting to a drill pipe of a drilling rig for enlarging a pilot bore in horizontal boring operations. The boring head has an axial member positioned along a central axis of the boring head for connecting the boring head to the drill pipe of the drilling rig. A plurality of flanges extend radially from the axial member, and a flange support frame is provided for structurally interconnecting and supporting the flanges on the axial member. A plurality of cutting cones are mounted to the boring head. In particular, each of the cutting cones has a cone axis, each of the cutting cones is mounted to one of the flanges such that its cone axis extends at an acute angle ranging from zero degrees up to about 45 degrees relative to the central axis; each of the cutting cones is mounted for independent rotation about its cone axis; and each of the cutting cones has a plurality of independently rotatable cutting bits mounted thereto.

Abstract: A bag neck tying device for tying a ribbon about gathered material. The bag neck tying device includes a bag gathering mechanism for moving a bag neck into engagement with a bag stop lever controlled by an electric brake. The bag neck tying device further includes a needle assembly for wrapping the ribbon around the gathered neck of the bag, a twister hook assembly for twisting the ribbon of tie material and a ribbon holder-shear assembly for cutting and holding the end of the ribbon. The gathering, needle, twister and holder-shear assemblies are controlled by bi-directional, brush type DC servomotors driven by full wave rectified solid state DC motor controllers in a closed loop control system which incorporates a software driven microcontroller for delivering reference input signals to the motor controllers for initiating and controlling pre-assigned functions of the motors driving the various tier assemblies.