| 摘要 |
1,036,300. Making hose end - fittings. WEATHERHEAD CO. July 2, 1965 [Dec. 8, 1964], No. 28141/65. Heading B3A. [Also in Division F2] A method of making a hose end-fitting comprises firstly cold-forming a metal body having integral skirt and head portions 6 and 7, with an opening in the latter coaxial with the skirt portion, the wall of said opening having inwardly extending and circumferentially spaced ribs 10a, Fig. 3 (not shown), secondly inserting a metal tube 25 constituting a nipple portion 25a through said opening, and thirdly crimping said head portion at 19 so that the ribs are pressed into and indent the tube wall within the opening thereby preventing axial or rotational movement between the tube and body. The metal body is formed from a steel rod blank cold-worked in bed-frame dies by punches carried on a reciprocating member. The head opening 8, Figs. 1 and 3 (not shown), is formed by a contoured tool which produces arcuate axial grooves 10-17 on the opening wall and defines the ribs 10a therebetween. The nipple portion of the tube is provided with barbs 26 which, as illustrated in Fig. 7 (not shown), are adapted to grip a hose end received within the skirt on crimping of the latter at 29 and 30. |
