Warp Stop Motion for Looms, US Patent No. 637234
Sample pages
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US Patent No. 637,234, granted November 21, 1899 to Joseph Coldwell and Christopher Giles Gildard of Fall River, Massachusetts, for an electrically operated warp stop-motion for looms. When a warp thread breaks, a thin sheet-metal drop-bar falls onto a rotating contact roller and completes a circuit. The circuit energizes an electromagnet that trips a latch and knock-off, which pushes the shipper out of its notch and stops the loom. The patent has two drawing sheets (Figs. 1-7), the specification, and 18 claims covering the drop-bar, circuit-rods, contact-roller with wiping-bar, and shipper-linked cut-out.
- Type
- Patent
- Date
- November 21, 1899
- Language
- English
- Pages
- 7
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From Ralph Griswold's Digital Archive, delivered by the University of Arizona.
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