The engineer's sketch-book of mechanical movements, devices, appliances, contrivances and details employed in the design and construction of machinery for every purpose; (1902)
Barber, Thomas Walter. [from old catalog] · New York, Spon & Chamberlain · leaf 79
ordinary tools in use, as gimlets, bradawls, pin and brace bits,augers, &c., which do not need description, the following an.noteworthy:— 521. Is the ordinary V drill for metal work. 522. Flat point, or bottoming drill. 523 & 521. Countersinking drills for metal. 525. Centre bit for wood.… … 74 TEE ENGINEERS SKETCH-BOOK. 631. Twist drill for metal. 632 & 633. Countersinking drills for wood. 534. Diamond drill for rock; bores an annular hole, the core of whichbreaks out at intervals. 636 to 546. Well boring tools for different kinds of strata; tools forraising broken rods, &c.…
Mechanical movements
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