Show telegraphic instruments the following fol foi lowins describe the various recording instruments now in use usa with the chief differences between them first the instrument in common use in this c country 0 antry transmits messages bythe by the alternate br breaking gah ial in and reconnecting 1 othe of the electric curre current nt the current allowed to flo flom flow r a moment produces a dot if a little longer a line thus the alphi alphabet bet is composed of combinations bi of lines and dots rate of communication about twenty words a minute second in the ment a needle on a dial plate revolves pointing 1 out the letters which are inscribed around hg t the e circumference like the hours on the face of a clock rate about fourteen words a I 1 I 1 minute I 1 I 1 third the house instrument prints the I 1 messages ingoman in noman roman capitals on a ion lon l strip of paper by tb the e revolution of a a type wheel the operator playing on a keyboard key board with a key for each letter tetter rate twenty five or thirty words a minute fourth the hag hug hughes hes instrument is acom a combination of the morse and house inventions 1 fifth the abe bains instrument patented the last month and named the embossing ani and self SW adjusting printing telegraph il 1 by thil thia instrument the letters are not only handsome handsomer ly printed on paper but also raised or embossed so that they can be read equally well without the use of ink this instrument is sa so simple in its arrangement that at the very first sight any person of ordinary capacity can send or receive a dispatch at the rate of twenty five words a minute about as fast as one cah can write legibly with a pen by this simple and cheap instrument telegraphing is likely td become very much extended throughout our cou country school and home journal |