Fly-shuttle for embroidery machine, has housing provided for receiving bobbin and made of light metal, and cover for closing base of shuttle, where outer surface of housing exhibits increased resistance that that of base material

摘要

The shuttle (1) has a housing (3) for receiving a bobbin, and a cover (7) for closing a base of the shuttle. The cover is connected with the housing via a joint and held in an engaged manner in a closed condition. The housing is made of light metal, and an outer surface of the housing exhibits increased resistance than that of a base material. An outer surface of the housing is hardened by chemical and/or mechanical treatment such as anodization or hard anodization, galvination, ceramic coating or a combination. An insert part is made of ceramic, hard metal or hardened steel.