Appleton's dictionary of machines, mechanics, engine-work, and engineering (1869)
New York, Appleton · leaf 867
hand at the required height, often directly, but sometimes a simple contrivance, consist-ing of a weighted lever, intervenes, by which the shuttle can be adjusted by a cord brought inside ofthe building. In the higher class of wheels, and especially when great steadiness of motion is required,the…
Mechanical engineering
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.