Bow forming plier |
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| 申请号 | US38675373 | 申请日 | 1973-08-08 | 公开(公告)号 | US3804132A | 公开(公告)日 | 1974-04-16 |
| 申请人 | MANN H INC; | 发明人 | MANN H; | ||||
| 摘要 | This invention pertains to a parallel jaw plier having a pair of wire cutters manipulated by the opening and closing of the handles. The jaws of the plier are operated in a parallel manner to move complementary configurations formed in the jaws whereby the ends of the wire may be bent into closed or open loops or bayonet stops to provide a precise configuration and a series of like sized loops in the wire. The jaws are so constructed that the wire which is to be bent may be made as an offset bend or bayonet stop or a start of the bow. The jaws are particularly adapted so that wires may be formed into an outer bow loop which may be either a closed or open loop. | ||||||
| 权利要求 | 1. A plier for forming bow loops, bayonet bends and the like in a length of wire, said plier including: (a) a pair of handles secured at and movable around a pivot means; (b) a pair of jaws retained by and movable by linkage members connected to and actuated by the movement of the handles so as to be movable in a parallel manner toward, to and away from each other; (c) a hardened work surface formed in the lower jaw, said surface contoured to include an upwardly extending portion of generally rectangular configuration, this rectangular configuration extending generally normal to the axis of the handle pivot means, a wire retaining groove formed in the upper surface of said rectangular configuration, the center line of this groove being generally parallel to the axis of the pivot means, a shelf portion formed on the jaw and generally parallel to the top surface of the rectangular configuration and at a selected distance below this top surface of the rectangular configuration an extending narrow tongue formed at the front end of said lower jaw, a wire retaining groove formed in the top surface of the tongue, the bottom portion of this tongue partially rounded to provide a curved surface against which the wire may be bent, and (d) a hardened work surface formed in the upper jaw, said surface contoured to include a downwardly extending portion of generally rectangular configuration, this rectangular configuration extending generally normal to the axis of the handle pivot means, the rectangular configuration of this upper jaw disposed so as to be parallel to but displaced sidewAys from the rectangular portion on the lower jaw a distance in excess of the maximum diameter of wire to be formed, this displaced distance enabling wire to be bent into an offset bend absent cutting of the wire when the jaws are brought nearly together, a wire receiving notch formed at a sloped angle to the face of the rectangular portion and in a lower corner of said portion which corner is adjacent the rectangular portion of the lower jaw, this notch having its axis laying in the same plane as the wire receiving groove in the upper surface of the rectangular portion in the lower jaw, a wire receiving groove formed in the distal portion of the rectangular portion of the upper jaw, this wire receiving groove complementarily formed to mate with the groove in the narrow tongue in the lower jaw, and a shelf portion formed on the upper jaw and generally parallel to the bottom surface of the rectangular configuration of the upper jaw, this shelf portion of the upper jaw spaced from the bottom surface of the rectangular portion of the upper jaw a distance substantially equal to the distance from the top surface of the rectangular portion of the lower jaw to the shelf portion formed therein. 2. A plier for forming wire as in claim 1 in which the extending narrow tongue portion of the lower jaw is as wide as and is in alignment with the rectangular portion of the upper jaw. 3. A plier for forming wire as in claim 2 in which both upper and lower jaws have knurled faced planar areas disposed opposite each other and adapted to come face-to-face and substantially together when the jaws are urged closed. 4. A plier for forming wire as in claim 2 in which the wire receiving groove in the tongue portion of the lower jaw is semicircular with a depth of less than one-half the diameter and this groove having its axis generally parallel to the axis of the pivot means. |
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