Fire Control Unit Vents Through Roof
Fire fighters, public safety officials and others witnessed a demonstration of a new fire control device embodying principles of a fireplace, for venting heat, smoke and gases through the roofs of buildings at the Factory Mutual Laboratories in Norwood, Mass.
The equipment somewhat resembles a beehive; it is 4 feet square and about 14 inches high. One type had a plastic cone 10 inches at the peak. When excessive heat occurs, a fusible link snaps. This activates lifting mechanism which clips open the hinged cover.
The device, developed by engineers of the Wasco Products, Inc., of Cambridge, Mass., and Sanford, Me., was tried out in three gasoline-fed fires. In two of these the roof vents were activated. Hot gases and smoke rushed out, while adjacent sections of the building reportedly remained relatively cool.