[Larger plate.]

[2464]. Valve gear, with single eccentric, and variable travel, adjustable by hand wheel. The eccentric drives a block to and fro in a slot, the angle of which in respect of the slide valve centre line is variable by a rocking motion controlled by a hand wheel.

[2465]. Newall’s high speed engine, single-acting. In this engine the connecting rod trunk centre and the piston are made to distribute the steam as shown.

[2466]. Reversing movement for a valve, where the power will only move the valve to the half stroke or mid position, as in a slide valve hydraulic engine (see [No. 1026]), the rolling weight then completes the movement (see also [No. 1740]).

[2467]. Automatic or governor cut-off gear. The governor operates the sleeve, which has a screw movement on the pin fixed to the crank shaft; a parallel feather on the sleeve revolves the cut-off eccentric, and varies the travel of the cut-off valve. The slide valves are of the form of [No. 1456].

[2468]. Eccentric motion to operate two slide valves.

[2469]. Crank shaft governor. The centrifugal gear acts on an outside crank to which the eccentric rod is attached, instead of a sheave and strap. A spring is applied to return the crank to full gear.

[Larger plate.]

[2470]. Single eccentric adjustable cut off for a “Fink” link gear; plain D valve gives equal distribution of steam at any cut-off; the travel of the valve is regulated by the hand wheel.