[Ads-l] Antedating of "conical pulley"

[John Doe]

OED 1890

1839 Will. Needham, an Improved Machine called the Silk-worm[...], in
Repertory of Patent Inventions
C,C,C,C, are pulleys that impart motion to the spindle by means of the cord
[...] which passes round the [...] conical-pulley, C[.]

https://www.google.com/books/edition/The_Repertory_of_patent_inventions_forme/e1gEAAAAQAAJ?hl=en&gbpv=1&dq=%22conical+pulley%22&pg=PA90&printsec=frontcover

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