JOINTS
, in Architecture, are the separations between the stones or bricks; which may be filled with mortar, plaster, or cement.
Joint, in Carpentry, &c, is applied to several manners of assembling, setting, or fixing pieces of wood together. As by a mortise Joint, a dove-tail Joint, &c.
Universal Joint, in Mechanics, an excellent invention of Dr. Hook, adapted to all kinds of motions and flexures; of which he has given a large account in his Cutlerian Lectures, printed in 1678. This seems to have g<*>ven occasion to the gimbols used in suspending the sea compasses; the mechanism of which is the same with that of Desaguliers's rolling lamp.
Joint-Lives, are such as continue during the same time, or that exist together. See Life-Annuities.
