| 摘要 |
A thread or wire is carried by a guide roller of a carriage along a path between a feed source and a winding spool. The carriage may be displaced in opposite directions at a regulated speed by a worm screw to overlay layers of turns on previously laid layers of turns in a regular arrangement of side by side turns. A lever pivoted on the carriage has a fork at one end. The fork is arranged between the guide roller and spool and the thread passes therethrough. The other, free end of the lever is situated between two switches or photocells detecting any pivoting of the lever. At one or the other ends of the spool, the angle or slant of the thread relative to the spool changes because the thread engages with the side walls of the spool. This pivots the lever, by way of the fork, and actuates one or the other of the two switches or photocells, which in turn causes a reversal of the displacement of the carriage. This achieves a regular, side by side arrangement of the turns as one layer is completed and the next layer is started. A blocking system including flanges which support the sidewalls of the spools is provided on the winding mechanism. The flanges have a diameter at least equal to the diameter of the spool side walls and provide a rim extending inwardly of the spool to engage the thread at the ends thereof.
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