110 



The automatic system is not used except for 

 special purposes, and the one that seems to be 

 the most favored is that of Wheatstone. The 

 system is in use in England and in America to 

 a limited degree. 



Early in the history of the telegraph a print- 

 injr system was devised. Wheatstone and 

 others had proposed systems of printing tele- 

 graphs in Europe, but taese never passed the 

 experimental stage. The first printing tele- 

 graph introduced in America was invented 

 by Royal E. House of Vermont, and first in- 

 troduced in 1847 on a line between Cincinnati 

 and Jeffcrsonville, a distance of 150 miles. In 

 1849 a line for commercial use was established 

 between New York and Philadelphia, and for 

 some years following many lines were equipped 

 with the House printing telegraph instrument. 

 The late General Anson Stager was a House 

 operator at one time. All printing telegraph 

 instruments, while differing greatly in detail, 

 have certain things in common, to wit: a 

 means for bringing the type into position, an 

 inking device, a printing mechanism, a paper 

 feed, and a means for bringing the type-wheels 

 into unison. There are two general types of 

 printing instruments, the step-by-step, and 

 the synchronously moving type-wheels. The 

 House printer was a step-by-step instrument 

 and consisted of two parts, a transmitter and 

 a receiver. The transmitter consists of a key- 



