TRONE; TRONES n.
A form of weighing machine for heavy wares, consisting of two horizontal bars crossing each other, beaked at the extremities, and supported by a wooden pillar. It is now mostly disused. [Scot.] Jamieson. Trone stone, a weight equivalent to nineteen and a half pounds. [Scot.] -- Trone weight, a weight formerly used in S…
TRUMPET n.
funnel, or short, fiaring pipe, used as a guide or conductor, as for yarn in a knitting machine. Ear trumpet. See under Ear. -- Sea trumpet (Bot.), a great seaweed (Ecklonia buccinalis) of the Southern Ocean. It has a long, hollow stem, enlarging upwards, which may be made into a kind of trumpet, and is used for many…
TURRET n.
drical revolving tool holder for bringing different tools into action successively in a machine, as in a lathe. -- Turret lathe, a turning lathe having a turret head. -- Turret ship, an ironclad war vessel, with low sides, on which heavy guns are mounted within one or more iron turrets, which may be rotated, so that…
UNIT n.
ity. -- Unit jar (Elec.), a small, insulated Leyden jar, placed between the electrical machine and a larger jar or battery, so as to announce, by its repeated discharges, the amount of electricity passed into the larger jar. -- Unit of heat (Physics), a determinate quantity of heat adopted as a unit of measure; a the…