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Show I ' Modern Safe Lock Held Burglar-Proof f The modern aafe lock la Impreg nable to all attacks except by burning burn-ing and "knocking" with explosives, but those methods require so much time there no longer is danger to ' . banks which employ modern pro- !tectiva devices. Maxwell C. Maxwell, Max-well, a locksmith with the Tale A Towne Manufacturing company, told members of the American Society So-ciety of Mechanical Engineers at the Newhouie hotel Monday night The ordinary pin-tumbler lock, such aa used on automobiles and house locks, are purpoaely made so -that they can be picked, Mr. Max- well said. That is because the public pub-lic would not accept a lock which Si could not be opened except by a key, ha explained. |