above. for securely blockading the entrance to merchants’ fire-proof safes against unlawful intrusion. The Electric Light in Surgery. We give this week an illustration of an ingenious combination lock, which will be readily understood One of the greatest obstacles to the success ofa by referring to… … cussed inthe SCIENTIFIC AMERICAN ; mostof the improvements ip agricultural implements being illustrated in its columng, DUCKWORTH’S To the Inventor ! The SCIENTIFIC AMERICAN is indispensable to every inventor, and is fraught with danger to the patient. The double bolt, B, all one casting, the…
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