Apparatus for the Production of Artificial Thread, US Patent No. 2091612
Sample pages
Page 1, at reduced quality. Open the document to read every page in full.
US Patent 2,091,612, granted 31 August 1937 to René Picard of Vaulx en Velin, France, and assigned to E. I. du Pont de Nemours & Company. It describes a rotating-plug regulating valve placed in the pipeline between the pump and spinning nozzle of a viscose or similar artificial-thread spinning machine. The valve intermittently interrupts the flow of spinning solution, producing filaments of uneven denier with nubs or sharp thick-thin variations that imitate materials such as pongee silk. The document includes a drawing sheet (Figs. 1-6), the specification and a single claim.
- Type
- Patent
- Date
- August 31, 1937
- Language
- English
- Pages
- 3
(A free account is all you need)
From Ralph Griswold's Digital Archive, delivered by the University of Arizona.
Have missing pages or a better copy of this document, or another document to share? Contributing documents »