Machinery with the Manual Printing Press. d^5 



tampan, as shown in fig. 1, there is a quadrant of a s])iral curve M ; this it 

 an important part. When the tympan Is open, the coflhi is free to be drawn 

 out, and it is locked to the inking table ; but in shutting down thetynifian, 

 this part, by the spiral curved edge, wedges the coflin and fonne hard home 

 in tlie tympan carriage, so as to secure its true position to preserve registcTj 

 and at the same time the Hides of the quadrants press back studs which uiw 

 lock the coUin from the inkhig table. 



The press may be of any apj)roved shape or material, and it has Its spindly 

 acted on by an excentric wheel V, which is to be i)ut in motion when the 

 coflin is run home in the press, by its pressing on the end of the lever N, 

 which throws the press into action, the shaft or axle O being in motion from 

 the moving power, and properly sustained by u fly-wheel. The ])re88 then 

 descends, and, on its return, the wiper P throws this jiart out of gear, and 

 at the same time presses back N, which, striking on the coflin, gives the 

 signal for the pressman to run it out. The j)latten is counterpoised l)y S, 

 and the excentric wheel by 11, so that when free the parts settle in the 

 position ready for action, the wiper P being behind the lever ,N ; on the 

 lower end of N is marked two, notches, with a round i»rt between them, 

 with a catch pressed upwards by a sj)ring ; this is to make the lever N settle 

 in the positions of being quite out of gear or perfectly in gear. 



The working of this apparatus by one man would be thus arranged ; he 

 would commence with the tympan down^ and by acting on the treadle T he 

 raises the rack, so that the pin I may slide along the bar K ; the wheel then 

 carries the inking table alone under the inking rollers and others, and returns 

 it to its position ; this is to be rei)eatcd till it is fully chargotl with ink, then 

 lie opens tlie tympan and touches the treadle, and the forme is carried off to 

 be inked, while he places white paper on the tympan ; the forme being re. 

 turned to its place and the tympan shut down, he runs it home into the press, 

 the inking table being left at rest. The pressman would bear on the winch 

 till the press falls, and then reverse his action, ready to run the forme out 

 whenever the lever N strikes it back. Having run it back and opmed 

 the tymj.mn, he touches the treadle, and proceeds to change the sheet while 

 the inking process goes on, and repeats these operations while he continues 

 to work* 



I have thus described the contrivance in its most simple ar- 

 rangement. The ordinary plans of framing, and the various 

 modes of relieving friction, and all accessories met with in mo- 

 dern machines, are supposed to be used where wanted. 



One of tlic objections most probable to arise at first sight is the 

 inconvenient length of the machine, but this may l)e obviated iii 

 many ways. 1*^ If shortness Ixj an object of importance, it 

 can best be obtained by applying those contrivances for inking 

 vhich do not require the inking table ; for if the distribution 

 of the ink be done entirely by rollers, for example such as 

 Uiusc used in Napcr'a macljinc, then ihcbe could be placed un- 



