| 摘要 |
919,469. Making chains. ESSER, P., [trading as MEYER ROTH & PASTOR]. April 7, 1961 [April 14, 1960], No. 12638/61. Class 83 (4). A chain link-bending machine includes wire supply and cutting means, a mandrel having a groove corresponding to the chain link to be bent and divided in the plane of the groove, two parallel bending jaws movable perpendicular to the length of wire and tangentially to the groove in the mandrel and two side jaws movable towards one another tangentially to the groove in the mandrel, the bending jaws being movable into a position lying in the path of the side jaws and retractable therefrom. A length 12 of wire, severed from a supply by a knife 11, is pressed by a clamping member 13 against a grooved mandrel 14, which is split on the mid-plane of the groove so that the parts can be separated for removal of the formed link. Two crank or cam-operated bending jaws 17, grooved at 20, 21, are then moved to bend the ends 33 of the wire about the mandrel 14 so as to lie parallel to one another. The junction of the grooves 20, 21 in the jaws 17 is rounded off or provided with a grooved roller. The jaws 17 are then withdrawn slightly and grooved side jaws 28 are moved in to bend the ends 33 about the mandrel 14. |
