An interconnection of signals and signal appliances such that their movements must succeed each other in a predetermined sequence, assuring that signals cannot be displayed simultaneously on conflicting routes.
An arrangement of signals and switches "interlocked" in such a way that their movements must succeed each other in a predetermined order so that a clear indication cannot be given simultaneously on conflicting routs. They are found at a crossing of two railroads, a drawbridge, a junction, or entering or leaving a terminal or yard.
An arrangement of signals and turnouts with their controls so interconnected as to prevent conflicting movements through any combination of tracks such as junctions, crossings, and crossovers. May be operated manually or automatically, and also by remote control.
A means of physically preventing apparatus (e.g.. points, signals) from being placed in potentially dangerous positions, particularly preventing one device being moved unless others are in the correct position.
The part of the railroad where tracks can cross each other or change or to direct trains along different routes. The interlocking itself is an arrangement of signals and signal appliances that permit train movements over controlled routes only if safe conditions exist.
An installation method that connects engineered hardwood or laminate boards to each other without the need for glue on the edges or ends. The boards lock together via a tongue-and-groove system. Interlocking floors "float" over the subfloor (see "Floating Floors.")
The stitch variation of the rib stitch, which resembles two separate 1 x 1 ribbed fabrics that are interknitted. Plain (double knit) interlock stitch fabrics are thicker, heavier, and more stable than single knit constructions.
Interlocked concentration values (interlocking features). The requirement that the two certified concentration values provided by Scott's dual-certified Universal and Reference Classes agree within ±1% of each other. Dual-certified calibration standards (gas mixtures) receive two rigorous, independent certifications: one during blending using the GravStat(tm) process and the other using proprietary laboratory analytical procedures. The interlocking requirement assures that all dual-certified calibration gas mixtures are of the highest accuracy.