| Notes |
Boring Machines. The problems of boring operations, speed of cutting, various flat cutters, use of cotter-pin to fasten cutter, the angles of boring cutters, types of cutters, round-section cutter, cutter set to reach into corner, use of nuts to bind double-ended flat cutters, nut & distance piece to lock cutter, two methods of applying screws to bind cutters, method of fitting cutters in snout ends, snout ends, cutters adjusted by nut or pointed screw, boring heads, for small & large diameters, head with cutters arranged to give trailing action |