Knight's American mechanical dictionary : a description of tools, instruments, machines, processes and engineering, history of inventions, general technological vocabulary ; and digest of mechanical appliances in science and the arts . unit-ing the broken ends of a chain. Each half of the linka has a swivel to which it is connected by a head, theswivel of each part forming a nut for tlie threadedleg of the otiier jiortion. The link h is nurde of twosections, h b\ laid upon each other and riveted. Theillustrations (c c, d d, e <?, //) are forms of connect-ing link whose twin swiveling portio
Knight's American mechanical dictionary : a description of tools, instruments, machines, processes and engineering, history of inventions, general technological vocabulary ; and digest of mechanical appliances in science and the arts . unit-ing the broken ends of a chain. Each half of the linka has a swivel to which it is connected by a head, theswivel of each part forming a nut for tlie threadedleg of the otiier jiortion. The link h is nurde of twosections, h b\ laid upon each other and riveted. Theillustrations (c c, d d, e <?, //) are forms of connect-ing link whose twin swiveling portions form a mous-ing for each other. 2. A short connecting bar with a bearing in eachend, for transmitting motion from one rod or lever toanotlier. 3. The length of one section-of Gunters chain, inches, the 100th part of 66 feet. 4. A torch. It is made of toW and pitch, or ofconibustililc splinters, such as of pitch-iiine. Link-motion. A gear by which the valve isoiieratcd in lucuniotives and similar engines. It actsas a vaiiable cut-ulf, or reverses the steam, or rendersthe valve inactive, as may be required. It consists of two eccentrics n o and their rods p q,one for the forward and the other for the backward Fig. hinh-Motion. movement of the engine. The rods are connectedto the respective ends of a slotted bar r called thelink, which is vertically adjusted by an arrangementof levers terminating in a handle v, as shown. Thevalve-rod s is connected to a sliding pin whichmoves up and down in the slot of the link as thelatter is adjusteil vertically by the handle and con-necting-levers jireviously referred to. The handleis retained at any set. which may be given to it, byengagement with a notchi^d segment-bar. The motions of the valve are produced by an im-pulse imparted to tlie pin in the slot of the link ; asthe pin moves, a longitudinal reciprocation is im-parted to the valveroil. The motion of the pin —which is furnisheil with a slide to adapt it to movein the sl
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Keywords: ., bookcentury1800, booksubjectin, booksubjectmechanicalengineering
