ted to will of the owner. If, however, the clock screw has onit a pinion capable of sliding up ing wound up on its axis, the escapement on the shorter arm, 1 3, of the lever at’the apex should be stopped by any accident, and it is and down, but causing the nut to revolve by the axis of the pendulum… … a dwelling house in this city, and has been agree in order to allow a small pawl attached tested with 1,500 lbs. Stairs on this princi- to the lever before-mentioned, to fall therein, ple have been in use in this city for two years. but when the door is locked, this pawl catches More information…
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