electric or pneumatic drill for mining, steinbruchbetrieb and other purposes with a springy abgestuetzten schwungkoerper

摘要

733,971. Inserting an oversize resilient member in an aperture. SCAGLIA SOC. PER AZIONI, M. Sept. 9, 1953 [March 27, 1953], No. 24944/53. Class 108 (3). [Also in Group IX] In fitting a flange 1, Fig. 1, to one end of a hub 10 of wood or similarly-yielding material, one end of the hub is forcibly thrust into a converging hole 9 of a split matrix 7 to temporarily reduce the cross-sectional area of that end which is then introduced into the flange hole and allowed to expand thereinto. End flanges 1 and 1SP1/SP, Fig. 5, are simultaneously fitted on a hollow hub 10 by fitting the hub on to a pin 15 of a punch 121, lifting a cover 7 and dissembling a body 3SP1/SP the union of semicylindrical parts of which confines an axial hole 4 and cavities 2 and 2SP1/SP for housing the flanges; placing the flange 1 in a recessed base 14; returning the parts of the body to the position shown; placing the flange 1SP1/SP in the cavity 2SP1/SP and replacing the cover 7; lowering the punch 12SP1/SP to drive the hub through the hole 9 and advance it to the position 101, expansion of the ends of the hub being permitted by cavities 18 and 18SP1/SP; when the apparatus is dismantled, the hub expands to complete its junction with the flanges and to enable disconnection from the pin 15.