boring machine

A boring machine, though one of the simplest, is by no means an unimportant adjunct to a full outfit of wood-working machines.

Near his forge stood Thomas working a boring machine, with which he was making some holes in a small brass plate.

The borings on land were mostly core borings, and were generally made with the chilled shot boring machine.

The function of these different levers has been explained to show, in a general way, how a vertical boring machine is operated.

For work that is too large to be conveniently lifted to the table of a machine the floor boring machine is employed.