Discussion on "Recent developments in the use of presses and press tools" at the Glasgow Section of the Institution

MR. CRADDOCK : I should like to take this opportunity of thanking Mr. Wilson for his most interesting lecture. There are one or two questions I would like to ask. In the first place, can Mr. Wilson inform us if there are any recognised limits for concentricity of an armature disk, say two inches diameter? Some firms who make these parts, after assembling, grind to obtain balance, but with careful tool design I think grinding can be eliminated. Has he come across any press tools which have stellite on their surface ? I understand this is now being done and long life is claimed. Referring to presses, there was a press which he did not say anything about. That was the crank type of Bakelite press. Has any advance been made on that type?