ns pivoted at one edge, ecury, and ammonia, the novement of the fans being limited by stops which after being subjected engage jointed cross braces. Each fan has also on its toapreparatory back a spring preventing excessive shock when the treatment with pot- fan is suddenly forced inward, and the… … \ lution is treated elec- : trolytically, itis the braces, so that when the fans are moved inward passed through a the links slide parallel with the braces; but when the zine strainer, or a fans move outward the links extend at an angle to the body of finely di- braces. The main shaft terminates at…
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