Patent Telegraph. 85 



alphabet. The letters are perhaps lefs diftinft than thofe 

 produced by means of twenty-five lamps; but this fpecies 

 of Telegraph comes cheaper, and is eafier fitted up: and 

 although the alphabetical letters rcprefented by it appear at 

 firft fight imperfeft, yet, after having feen them twice or 

 thrice, they will aUvavs after be eafily recogniCcd by the 

 intelligent mariner or foldier, and may, even ar firft fight, be 

 read hy one quite unacquaijited with the invention. With 

 twenty-five lamps, capiial letters are exhibited; with nine 

 lamps, fraall letters muil fomctimes be fliown. 



Forms of Signals Juggejlai hy the Patentee. 



As onlv oue letter appears vifible at a time, to divide ihefe 

 letters therefore into words, a fign isrequifite; for which 

 purpofe fig. 29, No. i or 2, in the refpe^live Telegraphs, is 

 exhibited. 



When a vefiel approaches another, and wiflies to fpcak 

 the ftranger, fig. ;^o, No. i or 2, is exhibited, being as much 

 as to fay " I wifli to fpeak you." 



When the (Irange vefiel ices this, flie (liows fig- 31, No. I 

 or 2, as much as to fay ^' I perceive you wi(h \o fpeak me, 

 am ready to hear you;" that is, to mark down the letters yon 

 exhibit. ' When the veflel has fpokc, the ftranger, in her 

 turn, exhibits fig. 30, No. 1 or 2, and replies. 



Fig. 32, No. I or 2, reprefents a fign which the captain of 

 the Eliza throws up, ihould he wifli to fpeak the captain of 

 the .lames, ivithout ivhat he fays being kiioiun to the crews 

 of either vejjel. For this purpofe two circular flat rings of 

 wood or metal may be put in a box, the one moveable on its 

 centre, the other fixed. On one of tlielc rings let the twenty- 

 fix letters of the alphabet be engraven, painted or written, at 

 equal dillances from each other, prx)gre[]iiu-h as they occur iji 

 the alphahit. On the other ring let tjiefe chara6ters be en- 

 graven, painted or written, hut irregularly. Let each captain 

 be poflefled of a box as above, fimilar in every refpe(5.t. 



When the captain of the Kliza throws up fignal marked 

 fig. 32, No. I or 2, and immediately thereafter the letter G, 

 this (hows he widics to fpeak privately to the captain of the 

 .lames, on this letter (or key, as it may properly be called). 

 On leeing this, the latter turns round the moveable ring in bis 

 iprivate fignal-box, until the two G's are overagaintt or dole 

 to each other, as in the figure annexed; (the white circle with 

 black letters reprelenting the moveable ring;) it being under-- 

 llood that the captain of the Eliza has prcvioully done the 

 /auif tiling in his private fignal-box. 



F 3 Every 



