Brief Outline of the History, Development and Methods Employed in the Manufacture of Laminated Glass

JSGT 1929 V13 T85-T098

The principle of securing a tough or plastic material between two hard and relatively brittle sheets or plates has long been known as a means of diminishing the risk or preventing splinters from flying under impact. Such a principle is adopted in armour plate, where the various laminae are alternately hard, and soft and tough, all being welded together into one composite whole. The hard material is not distorted appreciably, but can be splintered. The soft material can be distorted but does not splinter; and consequently as the hard plates are prevented from opening out by their adhesion to the tough centre structure, the penetration of bullets or shells is either greatly retarded or altogether prevented.

Westcote R. Lyttleton