Hardening Machine
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A one-page dictionary entry on the hardening machine used in hat making to felt and compact hat bodies by rubbing and pressing them with steam. It describes the wooden table with a perforated steam box, reciprocating rubbing boards driven by wrist-pins on flywheel disks, and the spring-loaded pressure post. It also explains how hat bodies are piled with separating cloths, partially hardened, and repositioned, and mentions a separate tip-hardening machine. A line drawing of the machine is included.
- Type
- Article
- Date
- 1884
- Language
- English
- Pages
- 1
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From Ralph Griswold's Digital Archive, delivered by the University of Arizona.
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