Abstract: Disclosed herein is a tool bit comprising a shank including a cylindrical base portion having an axis and a diameter, an elongated end portion of generally cylindrical shape and having an axis extending coaxially with the axis of the base portion, a diameter less than the diameter of the base portion, and an outer cylindrical periphery, which shank end portion includes therein a recess extending lengthwise of the end portion and being of right angle shape in a cross-section extending transversely of the end portion axis, which recess cross-section is defined by a long face extending in parallel spaced relation to a radius extending from the end portion axis and including an outer end at the cylindrical outer periphery and an inner end, and a short face extending from the inner end to the cylindrical outer periphery, and a connecting portion joining the end portion and the base portion and tapering from the base portion diameter to the end portion diameter, and a carbide insert brazed in the recess and having

Abstract: Disclosed herein is a boat hull including a stringer member having an end surface including therein a cut-out, and a projection extending beyond the end surface, a bulkhead member extending transversely to the stringer member, fixed thereto, and including an end surface extending in coplanar relation to the end surface of the stringer member and including therein a cut-out, and a projection extending beyond the end surface of the bulkhead member, a deck member engaging the end surfaces of the stringer member and the bulkhead member and including cut-outs respectively receiving the projections on the stringer and bulkhead members, and a gusset member extending substantially at a right angle to the stringer and bulkhead members and including a first projection received in the cut-out in the stringer member and a second projection received in the cut-out in the bulkhead member.