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net to control the opening and closing move- ments of said doors simultaneously as de- scribed. 4. A trap comprising a casing, a partition 5 formed to divide the casing into communi-. cating compartments, doors controlling en- trance passages into one of the compart- ments, a source of electrical energy and a circuit connection between said source of 1_o energy, magnet and one of said platforms through which the current flows in a given direction upon depression of said platform, a circuit connection between said source of energy, magnet and other platform through 15 which the current flows in an opposite direc-
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tion around the magnet with respect to the above mentioned circuit upon depression of the latter mentioned platform, arms pro- jecting from said doors to cooperate with said magnet to control the opening and clos- 20 ing movements of said doors simultaneously as described, and springs normally holding the said platforms out of electrical com- munication with their respective circuits. In testimony whereof I affix my signature 25 in presence of two witnesses. GREENE E. NEWELL. Witnesses: W. G. McGLOUVRY, C. C. ARDIS.
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