Improved Lock

1852 Scientific American  
of New York City, has taken measures to procure a patent for a new me thod of fastening the doors of safes, &c. The inventor has succeeded in discarding the pre sent system of attaching the lock to the door of safes, &c., which he considers highly ob jectiona ble, the door being the most vulnera ble part. This is evidenced from the fact that it is generally attacked by burglars, who, if they succeed in fo rcing the outer case, have easy access to the lock. But, by the present plan, the lock can
more » ... be attached to the casing of the safe itself. The main idea 1ollowed out is to have a continuous bolt moving along the length of all the sides of the door, which, when the lock is 1astened, secures every part equally and fi rmly. For this purpose he pro poses to employ iron movable flanges at the top and bottom of the door. About the cen tre of the outer plate of the door is a disc, having two rods attached to its face by pivots situated near its edge; now, by tuming this disc, the rods will be drawn to or from it, and as the ends of the rods are attached to the outer edges of the flanges, it follows ot course that, by turning the disc, both fl anges will be elevated or depressed. The outer edges of these fl anges are made to bear against cleets attached to the top and bottom of the mouth piece of the door. There is, mQreover, ano ther fl ange attached to that side of the mouth piece, which is not guarded by the fi rst-named fl an.ges. This latter fl ange works in pivots attached to the before-mentioned cleets, and when the door is closed, this fl ange bears against a catch attached to the door. The fourth side or where the hinges are attached is secured by the door having a projection run ning its whole length, and which catches in'a recess of the mouth-piece. Thus, it will be seen that a fi rm bolt holds the door and se cures it against fire or violence. The mede of fixing the fl anges and of securing their posi tion admits of variations which will readily suggest themselves.
doi:10.1038/scientificamerican11061852-60f fatcat:3sa5zw27rbd6pmx5stmw3i7nw4