The Artisan, or, Mechanic's instructor : containing a popular, comprehensive and systematic view of the following sciences ... also biographical notices of eminent scientific men, enriched by portraits : with many interesting and valuable articles relating to the mechanical and useful arts : the whole intended as a companion to the institutes (1825)
Carey, George G · London : Printed for William Cole · leaf 246
THE ARTISAN. 226 with too great velocity, and. to admit a figure, page 197), and called a lift-tenter, greater quantity when it is moving too were employed by Mr. Watt to regulate the slowly. opening and shutting of the throttle-valve. The attached balls marked W, (see the Thus in the annexed figure … moveable ring ; and the rod S, will be a , a are the two balls attached to an upright raised, which closes in part, the steam way. spindle by a joint, and connected with the Should the motion of the piston be too throttle-valve by a series of small levers slow, instead of rising' , the balls will…
