is an easily constructed instru- is disposed spirally. This flange engages a groove in the College, and Astor Libraries, and have found precisely the ment .; Fig. 3 is a vertical section of a portion of the same; breech block, so that when the actuating cam is turned on same state of things. You… … SIMPLE TELEPHONES. by a downward movement of the coil are connected with the handle, which also ejects the binding posts, N, at the been used in the College and Astor Libraries at all, and that end of the handle. The iron disk, J, is supported in the the shell. The advantages claimed for the…
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