which we have selected this ing 16 pieces of segments were all rabbeted at one end, in front of the core was a disk with a coil spring ad- week for illustration. The inventor of the alarm is so that when fitted together they were readily driven justed around it, which was supplied so that a segment… … to redness, the pyrotechnic material is exploded, there- A PYROTECHNIC FIRE-ALARM. by forcing the cap off the shell and igniting the slow- Nenr System of Refuse Furnace. burning material. Among the different systems of refuse-consuming neetiug with the mill. When this was accomplished furnaces…
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