Originally Posted by
wylk
Cleveland Trust doors were "automatic" so the bolts were thrown closed by the bolt motor (big springs) when the door was closed, and the time lock would trigger the bolt motor to withdraw the bolts at the appropriate time. Thus there were no holes through the door (or the door frame as with Holmes designs) and no combination locks and no bolt-throwing handwheel. A disadvantage is that in case of riots the door will still unlock itself, allowing access by the marauding mobs.