ography was described a varied within very wide limits, the operator can trans- The operator depresses the keys in the time avail- few weeks ago in the pages of the Scientific Amer- mit messages at a speed compatible with his ability. able between the two bars passing a given point, In its general… … can be incorporated if re- small brush, which sweeps over the inlaid contact pieces quired. By resorting to one Receiver, showing traveling carriages and Transmitter, showing contact piece which case, however, the keys can on the contact frame. The brush contact. strikes pins of letters below. be…
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