This section is from the book "The Engineer's And Mechanic's Encyclopaedia", by Luke Hebert. Also available from Amazon: Engineer's And Mechanic's Encyclopaedia.
Gold Thread, as it is called, consists of a silk thread covered with gold wire. It is formed by passing gold wire between two rollers of nicely polished steel, set very close together, by which means it is rendered quite flat, but without losing any thing of its polish or gilding, and becomes so exceedingly thin and flexible that it is easily spun upon a silk thread, by means of a hand-wheel, and so wound upon a spool or bobbin.
 
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