Silk Spinning Machinery, US Patent No. 1909
Sample pages
Page 1, at reduced quality. Open the document to read every page in full.
US Patent No. 1,909, granted December 17, 1840 to George Heritage of Chestertown, Maryland, for machinery that spins sewing silk and twist directly from cocoons. Revolving basins of warm water holding the cocoons give the individual strands their first twist. Graduated square (or triangular) shafts then unwind the silk at different speeds, so threads of different fineness can be spun at once before the spindles and fliers finish and wind the thread. The scan includes a perspective drawing of the machine, the specification, and two claims.
- Type
- Patent
- Date
- December 17, 1840
- 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 »