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Ar. on a fesse sa. a lion pass.betw. two flanches sa.
Watt describes it as a circular plate of metal, having a spindle fixed across its diameter, the plate being accurately fitted to an aperture in a metal ring of some thickness, through the edgeway of which the spindle is fitted steam-tight, and the ring fixed between the two flanches of the joint of the steam-pipe which is next to the cylinder.
These bottom plates had flanches on their edges, and were secured by nuts and screws at every juncture.
Leicestershire, and there introduced the cast-iron edge-rail, with flanches cast upon the tire of the waggon-wheels to keep them on the track, instead of having the margin or flanch cast upon the rail itself; and this plan was shortly after adopted in other places.
_Warrenne_ (_gu. a lion rampt. or_, and No. 68), “_flanched_,” -- that is, blazoned only upon the flanches (see No. 141) of the Shield, the central area being blank.
The boiler is composed of 70 plates of iron, cast with flanches, and bolted together, so that the flanch and bolts are within the water of the boiler wherever the flame touches it; otherwise they would be burned oft "in a few days.