SIDEROGRAPHY n.
The art or practice of steel engraving; especially, the process, invented by Perkins, of multiplying facsimiles of an engraved steel plate by first rolling over it, when hardened, a soft steel cylinder, and then rolling the cylinder, when hardened, over a soft steel plate, which thus becomes a facsimile of the original…
SPRING n. 2 definitions
An elastic body of any kind, as steel, India rubber, tough wood, or compressed air, used for various mechanical purposes, as receiving and imparting power, diminishing concussion, regulating motion, measuring weight or other force.
STAY n.
force them apart, as in the leg of a steam boiler. -- Stay busk, a stiff piece of wood, steel, or whalebone, for the front support of a woman's stays. Cf. Busk. -- Stay rod, a rod which acts as a stay, particularly in a steam boiler.
STRUCTURAL SHAPE n.
any steel or iron member of such shape, as channel irons, I beams, T beams, etc., or, sometimes, a column, girder, etc., built up with such members.