part of the floor is supportedon springs and is provided with vertically foldablesupporting standards, which in one position hold thefloor in inoperative position. The movable standardsare connected with an adjustable rock-bar carrying thepistol. The burglar who enters the house will find thefloor… … AN EXPANSIBLE SCREEN. tridges. The small detailed view shows that the pis-tol can be thrown down out of operative position. Automatic Engine Horse Power Indicator.—It isprobably a new idea to provide an indicator calibratedfor a steam engine of known approximate boiler pres-sure. Edmund Portier, of…
Patents · Munn · Gasoline · York central · Scientific American · Time ago · Sewing machines · West Indies · Vertical cross · Rapid transit · American january · Horse power · Park avenue
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