Our ordinary Burglar-Proof Safe is made as follows: 1st plate of 3/8 in., or 1/2 in. wrought iron. 2d plate of 1/2 in. patent crystalized iron. 3d plate of 1/4 in. steel bars. 4th plate of 1/4 in.

1/4-inch steel bars, at right angles with No. 7. 9th plate, or inner body of safe, 3/8-inch wrought iron. This Safe, for a long time, was considered the strongest and most perfect "Burglar Proof ...