[396]. Slot and crank motion. The pin usually runs in a sliding block.
[397]. Segment pinion and double rack motion.
[398]. Rack and pinion. The pinion is sometimes made so as to be driven on one stroke and run loose on the other, by a clutch or ratchet motion, such as [Nos. 1135], [1178], or their equivalents. See [Section 62].
[399]. Hydraulic multiplying gear. See also [Section 42].
[400]. Slotted crosshead and disc crank. The pin runs in a sliding block in a groove in the covered crosshead.
[401]. Stannah’s patent, works vertically; the fly-wheel centre A oscillates on the end of a link B, allowing the crank pin to run in a straight line.
[402]. Screw and fly nut. May be made to produce continuous rotary motion by fitting the nut with a clutch motion similar to [1135] or [1178], so as to grip the wheel only on one stroke.
[403]. Friction gear; the pinion is driven by the reciprocating rod and runs loose on the out stroke, the weighted lever with roller giving frictional grip on the in stroke.
[404]. Lever and roller crank pin.
[405]. Treadle motion, with cord and spring. For continuous rotary motion the pinion must be fitted as described with [No. 402].