DRILLING MACHINE Russian patent published in 1995 - IPC

FIELD: hole drilling equipment. SUBSTANCE: drilling machine has support with holder, carriage, drill rotary drive. Novelty consists in availability of drum mounted on eccentric shaft of feed mechanism. Attached to drum rim is gear wheel for engagement with gear. Free end of rope is secured in recess of holder movable with the aid of tie-rod with spring and insert with stop and nut. Fastened to drum is additional rope of reverse motion whose free end is secured to lower part of support through additional angle block. EFFECT: simplified design and extended service capabilities of drilling machine. 4 dwg