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Scientific American, Vol. 71, No. 20 (November 1894) (1894)

leaf 7

An illustration from Scientific American, Vol. 71, No. 20 (November 1894), 1894, leaf 7
penetrate through the wall and charge of gas and air is compressed to about one-third have often to be ground off, the emery wheel buffer work in concealment upon the sides of the vault. But its original volume. even if a burglar were given free scope, it is doubtful shown in Fig. 6 being employed.… … mens of dried flowers of plate glass. In the cuts SAFE DOOR AND PROTECTIVE CAGE OF RAILS. papaverrhceas, one of Figs. 5 and 7 the bolts the most difficult fiow- for this cover are shown This idea may possibly unchanged. ers to preserve projecting around the edges. In the cut on this page tions, do…

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