metallo- graphic examination of a series of craters produced by PAGDs in clean H34 cathodes,under a a corresponding observed maximum of 7.5 X higher AC rms values than the applied DCvalues 5 de- anode as a crater-free cathode) for over a million crease rapidly with the...
The illustrated attachment comprises a base 10 having a hole S2 (Figs. 1 and 3) therein adapted oI to receive a bolt for securing the base to the carriage of a lathe or other machine tool. The base has a plane seat 14 (Fig. 3) on which a tool holder 16 is mounted to slide in ...
AN ATTACHMENT FOR TURNING APPROXIMATELY SPHERICAL SURFACES OF SMALL CURVATURE ON A LATHE This device replaces the compound rest on a lathe and was particularly designed for the production of the convex or concave surfaces of lens-grinding tools although it is well adapted for the production of suc...
15360. [Class 83 (iii)] An attachment for turning arcuate surfaces comprises a block 1 mountable on a lathe rest and having its upper face terminating in a flange 3 which forms a seating for an angularly-movable tool-post 4 carrying a tool 6. A plate 8 extending from the tool-post ...