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Hermann Gruell
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Structures Of Non-Positive Displacement Pumps
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Abstract
15,524. Gr³ll, H. July 31. Motors, alternating-curre n t.- Electrically - driven fans have the armature B of the motor mounted on the periphery of the blades A so as not to obstruct the passage of air. The blades may be keyed in succession on the shaft E, or the armature may be furnished with blades.
GB190115524D1901-07-311901-07-31Improvements relating to Electrically Driven Blast-fans
ExpiredGB190115524A
(en)