the gearing the speed is pro- which is held down and normally out of contact with perly reduced and also con- the magnet by aspring. Supported within the path AN IMPROVED VENTILATOR OR BLOWER. trolled by the vibration of the of the drop, as it falls when released by the catch, is a The illustration… … Co., Goldendale, Washington. vertical, and is kept in an approximately fixed position by arod extending from the front of the frame to an —>+-0 +o operation for readily exhausting foul air, gases, etc., eye on the tongue. Two vertical shafts are carried by The Glow Worm Caves of Tasmania. from…
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