A switch or other device that prevents activation of a piece of equipment when another piece of equipment is operating.

An electrical or mechanical device that will not allow the machine to cycle if not in the correct position. i.e.- The turret on a rotary machine will not index unless the safety light curtain, cooling tank (if used), dip tank, oven doors, primer tank (if used), or safety gates are not in the correct position. An interlock screen on the HMI shows what interlocks are active.

Hoistway-door interlock is a device having two related and interdependent functions: 1) to prevent the movement of the elevator by the normal operating device unless the hoistway door is in the closed position; and 2) to prevent the opening of the hoistway door from the landing side unless the car is within the landing zone and is either stopped or is being stopped.(empty)(empty)

An arrangement whereby the operation of one control or mechanism allows, or prevents the operation of another. (R15.06)

A double-faced ribbing stitch consisting of two ribbed fabrics joined by interlocking loops. The stitching is thicker, heavier and more stable than single knit constructions. Interlock stitching is often used to make outerwear.

A double-knit, plain-stitched stretchy fabric that looks the same on both sides. Used for home and apparel.

Firm double knit fabric. Both sides of the fabric look the same (similar to the face of jersey). Used in short sleeve knit shirts.

a double face knit fabric with 1x1 rib on each side. Usually firm and closely knit.

To unite, embrace, communicate with, or flow into, one another; to be connected in one system; to lock into one another; to interlace firmly.

To unite by locking or linking together; to secure in place by mutual fastening.

hold in a locking position; "He locked his hands around her neck"

become engaged or intermeshed with one another; "They were locked in embrace"

The characteristic of a crushed angular aggregate to key into adjacent angular aggregates that provides superior strength and load-carrying capabilities.

The inability of pavers to move independently. When pavers are interlocked, there is frictional forces between them, which prevent them from moving alone. Interlocking allows the bearing of heavy loads to be dispersed throughout the pavement.

Frictional forces between paving units that prevent them from rotating, or moving horizontally or vertically in relation to each other; also defined as the inability of a concrete paver to move independently of its neighbors. The friction forces enable load transfer among the paving units. The three kinds of load transfer are vertical interlock, horizontal interlock and rotational interlock. Vertical interlock is achieved by shear transfer of loads to surrounding units through sand in the joints. Horizontal interlock is primarily achieved through the use of laying patterns that disperse forces from braking and accelerating vehicles. The most effective laying patterns for maintaining horizontal interlock are herringbone patterns. Rotational interlock is maintained by the pavers being of sufficient thickness, placed closely together, and being restrained by a stationary edge such as a curb.