Tog′gle-joint.
An elbow-joint. A joint formed by two pieces articulating endways, as the human knee. It is much used in presses: the Stanhope printing-press, and some hay-presses, are instances. See hay-press, and many other instances under Presses. See list of Presses, page 1784. See also toggle-press. Fig. 6498 illustrates the toggle-joint, frequently used in place of the screw, in presses. The two parts a c are jointed together at b. The part a is jointed to the upper part of the press, and c to the upper end of the follower. When the links a c form an angle with each other, the follower is in raised position, but when straightened, by depressing a lever d connected to the point b by a crankarm, they operate with great power to depress the follower. |
| Toggle-joint. |
