An improvement in or relating to chucks

摘要: 1,085,759. Chucks. SAMUEL OSBORN & CO. Ltd. Oct. 29, 1965 [Oct. 1964], No. 44220/64. Headings B3B and B3K. A chuck comprises an axially-projecting threaded mounting 18 a shouldered abutment 22 for tool or workpiece, means securing the in body 10 including conical plug 26 screw 28 holding it position. Ingress of dirt may be prevented by rubber sleeve covering recesses 32, 34. In modification, plugs 24, are retained screw-threaded having tapered bore to engage plugs. The face-milling cutter is removed first slackening 28.