Hammer-drill bit holder - has enclosed slot in head lightly clamping bit with head fitting to stem via parallel or taper faces

摘要

The holder accommodates a loose bit for a hammer-drill etc., its head having a slot (2) enclosed on both sides and in which the bit is lightly clamped. It can comprise a separate head and stem, fitting together via parallel or taper faces. The slot can be of parallel or tapering section in the transverse direction, and a hole can be formed through the head. The bit extends across the hole for roughly one-third of its dia. so that it can be freed by a drift.