A Method of, and Apparatus for, Preventing the Spreading and Effect of Coal Dust and Fire Damp Explosions.

摘要

16,440. Kahler, G., and Junker, F. Aug. 17, 1911, [Convention date]. Sprinklers, automatic.-The spreading of coaldust &c. explosions is prevented by the action of the pressure created by a blasting shot or explosion upon a disk, which releases a switch device held under tension and sets a spraying- apparatus into action to produce a water zone. In the apparatus shown in Figs. 1 and 3, the stop-cock 3 of the sprinkling-pipe 1 is connected by a rod 6 with a stop-cock or valve 5 on a branch-pipe 4 leading to a spraying apparatus 36 so that when cock 3 is turned off cock 5 is opened, and vice versa. A bevel-wheel 10 gearing with a wheel on the spindle of cock 5 is rotated to open the cock 5 by the head 35 of a bent member 14 striking a pin 12 on the wheel 10. The bent member 14 is turned about pivots by a spring 15 when an air pulse moves the disk 26 and so removes the arm 24 from a pawl 23 on the shaft of a pivoted hammer 19, which falls on a pivoted plate 16 and turns it to disengage a tongue 17 from a tongue 18 on the bent member 14.