There are double eccentrics fixed on the shaft, whereby the movement of the slide valves is regulated.

The valves are cylindrical, and are driven by independent eccentrics, the spindle of the cut-off valve passing through the center of the main valve.

You were always a little eccentric in your taste!

The loose eccentric is of course a familiar arrangement in connection with poppet valves, as well as for the purpose of reversing an engine when driving a single slide valve.

Not that they run after mere eccentrics; they have a wholesome reserve of contempt for such.

Hence a simple normal state which is the most common; a normal-concentric state, a normal-eccentric state: here we have a second distinction.

The drop and ascent are now effected by means of a separate eccentric in Singer's machine.