Machinery tvtth the Mantinl Printing Press. 257 



in adclitiort to the excen trie wheel apparatus, the press might bfe 

 Ufged in the common way, when the engine moving-power was 

 Iftbt innscj'l"«^ «^^ »i:J[iiiOid /(Wo eJi iimlJ nom uljiil b^yoaj 

 J It may h^^idi^ ibddiiAh&'%xtp^^ "of 



\^ press I have descrihed. The shaft for the ex centric wheel 

 is supposed to revolve oficein two seconds, and the wheel of the 

 rack-work once in each secx>nd, iind that eight revolutions conri'* 

 (Hete the operation of inking. The time necessary to run the 

 W)flSti^^ifeti} the press two seconds, and the same time to run it 

 out.— Tlien, 'V^JtiO imm ijit>5 piiucj -jsofpoJnr oJ soajjo lln 



The time of inking, clurinlUfei'SfsS^rfi flfi^^t^^^^^i ^i\PS& 

 fwfliO(_u y/V Ituiining in, (i> jbiaiiio aiii )^l'jJii(n*»}lB "gtSiu vd lorijid 



li«tfl dno no ffWP'^fWkrf "anoimirb o)i3oqqo*nf ^nfvofff ,ef99ffT>5r 

 li bnu ; >ltov^-/i - ii ov/i no ^niJojs .ooffototnWfl'tf) iipdjlo 



^ffj ff . ' r Ori« iropr^s»jpn )»;W Kq(^9f»clp>gU»ff 2$6 in>thc,hour».. \,..,\..,.. 



fofi^. the Sketch, the odeif^^^c^ifflti^'or carriage of the tympan, 

 is supposed to consist of three sides, ^flml witJiout a bottom, 

 iind made very thick in tlie sides* for sti^ength. Pcrh'ajSis it 

 would be better to be made with a bottom, in which case, the 



-^htcr and range, so far as the tympan carriage has to be moved, 



%ust be as much lower than the range for the inking table as 

 %t bottom is thick, that the forme may be on the same level as the 



^ihkingtabfei^ '5^^^ f»nr. x^niaf icq 



— i ,foorfw 



sf iioiJora fli 38o*(q 



f r • » r Note hj Mr Fraser. 



»d)&T!<rc« the paper referred to by Mr Clerk Maxw^l appeared in tbedtat 

 tNumber of this Journal, it has been satisfiictory to learn, that the gybjectbad 



, (^e99 ,i^so ,aHractiug considerable attention elsewhere. Among other conimu- 

 •niegtipns rece|iye<l, we have been favoured with one from IMr Cowper, and ano- 



'ther iroih Mr Napief,the patentees of the two large printing machines ftrrmer- 

 ly alluded to. The latter gentleman states, that he bas olready Sttofed;*; patent 

 %a macliinery, i»rt of which, although in some degrfl^,*ffwlteA»8»ltMtp">- 

 jBpsed by u.s/i3 intendetl for the sauie purpose, bii^,^»<^J%I^JWf,«Aj^^ 



, J«kf9 perfection ; and Mr Cow per. say s>, that his i»tent for the largd ma«iine« 

 includes also the application of the inking^pparatus to the comftieri pr^teea, 

 •^tut that he has declined to make such an applicati<>rt',lthfddgh fre<|U«itlyTe. 



i^Uested to do so, from a belief that tliepriuterwaidiifiiseijwgq^a iffl».it. 



to 



OI 



