6 JANUARY 1, 1898. … immediately below a 4. Cable in pipe for use onshipe. 5. Waring for house fire-alarm connected the inner and outer thermostat, the circuit wires of the cable and will be closed and the close the circuit, as alarm rung in immedi- shown in our illustra- ately. If, however, the fire should start at a…
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![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer03inte-485-303.webp)
