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Shedding frightful blows with only an angry shake of his head, he would lower it and charge as a wild boar charges, while his huge arms flew like lunatic connecting-rods. The cleverest footwork could not always elude his tremendous rushes, the coolest ducking and dodging could not wholly escape that frantic shower of fists.
The connecting-rods gave the motion to two pinions by cranks at right angles to each other; these pinions communicating the motion to the wheel which worked into the cogged-rail. Mr. Blenkinsop’s engines began running on the railway from the Middleton Collieries to Leeds, about 3½ miles, on the 12th of August, 1812.
His new engine was called the Pyramidal, because of its form, and was the first move towards what are now called Direct-acting Engines, in which the lateral movement of the piston is communicated by connecting-rods to the rotatory movement of the crank-shaft. Mr.
The valves, as can easily be seen, are very simple affairs, the steam pressure in the steam chest holding the valve either open or shut until it is moved by the pawl on the rock-shaft. The amount of travel on the rock-shaft is fixed by the design, but the proportionate travel above and below the horizontal is controlled by the length of the connecting-rods from the crank to the rock-shaft.
Rather for the occupation it gave him, Scott took the wheel himself, directing Clingman to call the men, and remove the stanchions and connecting-rods on the starboard side of the boat from the galley to the length of the mast aft, so that the sail might not be obstructed when it was set.
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