agnets in the usual way. DOOB CHECK AND CLOSEB. By using flat coils instead of the usual round coils, the In the operation of automatic elevators, which are poles of the magnet can be brought much closer to- usually- controlled by means of push buttons on the gether than usual, providing a much… … DOOB CHECK AND CLOSEB. AN IMPBOVED TELEGBAPH SOUNDEB. current. The inventor of this improved water current motor ■ is Mr. Asahel A. Porter, 329 North Willow sure the proper closing of the door, the mechanism In this way a louder sound is produced with the same Street, Waterbury, Conn. battery, or…
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