Apparatus and method for making twisted wire products using intermittently fed fringe material |
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| 申请号 | US3774653D | 申请日 | 1972-06-12 | 公开(公告)号 | US3774653A | 公开(公告)日 | 1973-11-27 |
| 申请人 | AMERICAN TECH IND; | 发明人 | GELARDI J; | ||||
| 摘要 | Two or more wires are passed over wire guides as they are pulled and twisted together by a rotating chuck mounted on a moving carriage. A strip of fringe material is fed between the wires to form bristles. The fringe material passes between two or more fringe material guides which intermittently hold the fringe material and break it to produce a length of twisted wires having segments of fringe material with gaps between them held between the wires. The lengths of twisted wires are then cut at points located within the gaps to make, for example, branches for artificial trees or parts of brushes. | ||||||
| 权利要求 | 1. An apparatus for making twisted wire products comprising at least two wire guides over which wires can be passed and brought together, means for pulling the wires across th wire guides and twisting them together, at least two fringe material guide between which a strip of fringe material can pass as it is fed between the wires, and locking means for intermittently causing the fringe material guides to hold the fringe material against movement, thus severing the fringe material, thereby producing a length of twisted wires having segments of fringe material held between the wires and gaps that are free of fringe material between the segments. 2. The apparatus of claim 1, wherein the fringe material guides are rotatable and the locking means causes the fringe material guides to hold the fringe material against movement by stopping the rotation of the fringe material guides. 3. The apparatus of claim 1, further comprising a plurality of O-rings each of which surrounds one of the fringe material guides. 4. The apparatus of claim 1, further comprising a groove formed about the circumference of each of the wire guides for engaging the wire that passes over that guide. 5. An apparatus for making twisted wire products comprising: a first pair of rotatable fringe material guides; a first rotatable wire guide disposed between the fringe material guides of the first pair; a second pair of rotatable fringe material guides arranged so that each fringe material guide of the second pair engages one fringe guide of the first pair; a second wire guide disposed between the fringe material guides of the second pair; and locking means for intermittently locking at least two of the fringe material guides against rotation to hold and sever the fringe material while permitting rotation of the wire guides; whereby two continuously moving wires can be brought together and twisted while fringe material is intermittently fed between the wires leaving gaps along the wires which are free of fringe material. 6. The apparatus of claim 5, wherein the first wire guide is larmer in diameter than the fringe material guides of the first pair and the second wire guide is smaller in diameter than the fringe material guides of the second pair. 7. The apparatus of claim 6, further comprising a V-shaped fringe material feeding ramp adjacent to the fringe material guides. 8. The apparatus of claim 5, further comprising a control means for intermittently acTuating the locking means at predetermined intervals. 9. An apparatus for making twisted wire products with spaced-apart segments of a traversely slit web of fringe material held between the twisted wires comprising: a first axle; a first pair of fringe material guides keyed to the first axle for rotation therewith; a first wire guide freely rotatable on the first axle between the fringe material guides of the first pair; a second axle; a second pair of fringe material guides keyed to the second axle for rotation therewith arranged so that the fringe material is engaged between the fringe material guides of the first and second pairs; a second wire guide freely rotatable on the second axle between the fringe material guides of the second pair; and locking means for intermittently locking at least one of the axles and thereby intermittently locking at least two of the fringe material guides against rotation; whereby two continuously moving wires can be brought together and twisted while fringe material is intermittently fed between the wires leaving gaps along the wires which are free of fringe material. 10. The apparatus of claim 9, further comprising control means for intermittently actuating the locking means. 11. The apparatus of claim 9, further comprising movable carriage, a rotatable chuck for twisting and pulling the wires supported by the carriage, and a control means responsive to the movement of the carriage for actuating the locking means. 12. The apparatus of claim 11, further comprising a series of cams that are successively engaged by the control means as the carriage moves, the position of the cams determining the predetermined interval at which the locking means is actuated. 13. A method of making twisted wire products comprising: feeding at least two wires between two wire guides and twisting the wires together after they emerge from te guides; feeding a strip of transversely slit fringe material between the wires as they are twisted together; and intermittently holding the fringe material being fed between the wires to prevent it from moving with the wires and thus cause the fringe material to break at predetermined intervals, thereby forming gaps in the fringe material; and cutting the twisted wires at points located in the gaps to form pieces having end portions that are free of fringe material. 14. The method of claim 13, further comprising feeding the fringe material between a plurality of rotatable fringe material guides and intermittently locking the guides against rotation to hold and break the fringe material at said predetermined intervals. |
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