| 摘要 |
A device for detecting the breakage of a filament as a filament passes to a working surface is provided. The detection device has a conduit through which a filament and a gas passes. This conduit is connected through a pressure port to a device for measuring pressure change. If a filament being pulled from a supply source through the conduit of the device is broken, the filament will be pulled out of the conduit. When the broken filament is pulled out of the conduit a change in pressure occurs in the pressure port. The change in pressure is sensed by the device for measuring pressure change and a filament breakage alarm is activated. A break detector and correction system is also provided in which a broken filament is replaced. In this system the change in pressure at the pressure port activates a filament-replacing system.
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