| 摘要 |
1,172,194. Reamers. EMERSON ELECTRIC CO. 20 March, 1968 [29 March, 1967], No. 13405/68. Heading B3C. A pipe-defurring reamer comprises a tapered body 10, Figs. 1 and 2, having pairs of cutting edges 16a, 17a and 18a, 19a, each pair being of opposite hand, the body being adapted to be secured to a machine spindle or ratchet by a pin which passes through a hole 12a. The reamer may have flutes 26c-29c, Fig. 4. |
