Patent Model - Improvement in Variable Cut-Offs for Steam-Engines

Maker and role
William Wright, Patentee
Production date
May 20 1873
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Object detail

Wood, brass, iron, steel
5 3/8 x 4 x 12" (13.7 x 10.2 x 30.5cm)
Wright's invention "relates to the engine cut-offs, controllable by the governor, and in which the cut-off valves, that may also be the induction ones, are actuated by a variable tappet motion. The invention consists in a combination of peculiarly constructed and reversely arranged vibrating valve-lifters, also capable of longitudinal motion relatively with the axis about which they vibrate for the purpose of varying the action of the cut-off." (Patent Number 139,224)
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