. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . nd provided withan inner 9 is a solid-door bankerssafe,made by Messrs,Herring & Co.,w h i c h has thenovel feature of asolid outer door,with a smoothsteel surface, un-pen e t r a t e d byspindle or the time-lock has unlockedat the time set, thebolts may be oper-ated by a mechan-ical attachment onthe inside of thesafe door. A lock- iifg bar is moved so that the door has a slight play. It is then
. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . nd provided withan inner 9 is a solid-door bankerssafe,made by Messrs,Herring & Co.,w h i c h has thenovel feature of asolid outer door,with a smoothsteel surface, un-pen e t r a t e d byspindle or the time-lock has unlockedat the time set, thebolts may be oper-ated by a mechan-ical attachment onthe inside of thesafe door. A lock- iifg bar is moved so that the door has a slight play. It is then given an in-and-out move-ment by means of a cam leverage on the outside of the door. This works the attachmentand unlocks the strong bolts. It is arbitrary in its action, not depending upon springs orweights. Among the late improvements in safe manufacture, applied by Messrs. Herring & area new form of hinge, by which the tongued and grooved door is withdrawn perfectly squareand true from the jambs in the body of the safe until it is free from the groove with which itinterlocks. Safe bodies are made of solid hard and soft steel, or steel and iron welded plates. Fig. 10.—Marvin flre-proof construction. SANDPAPERING MACHINES. 7G3
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Keywords: ., bookcentury1800, bookdecade189, booksubjectmechanicalengineering
