To all whom it may concern, be it known that I, William C. Davoll, of Fall River, in the county of Bristol and State of Massachusetts, have invented certain new and useful improvements in the machine known by the name of Speeder, Double Speeder, or Fly frame used for roving cotton, preparatory to spinning
Publisher: [s.n.]
Published: 1843
Place of publication: United States
Language: eng
Subjects: Spinning machinery; Patents
Notes: Caption title.

Signed: William C. Davoll. Patent dated May 19, 1843.