MECHANICAL COMPOSITION IN PRINTING—TURPAIN. 119 
the manuscript five or six times more quickly than the hand composi- 
tor, but he must also watch both the keyboard and the melting 
furnace. 
Besides the inconveniences of this first class of casting machine, 
such as the making over of the whole line for the least correction, 
there is another objection. Printers complain, that in casting the 
monolines, the typographs, and the linotypes the metal does not flow 
into the shallow matrices at a temperature low enough to give a good 
-face and to print a very clear impression. Furthermore, the metal 
Dey genni dot 
1G. 8.—General view of the linotype machine. 
lines are often hollow and may be crushed in putting them in the form 
for presswork. 
The rototype (pl. 11), invented very recently by an Austrian, M. 
Schimmel, likewise produces a line cast as a single block. A large 
wheel carries four collectors placed at right angles. The collector, I, 
at the extremity of the horizontal diameter of the wheel in the posi- 
tion of departure, receives the row of matrices forming a line. It is 
carried below the diameter of the wheel where the line is justified, 
while the second collector, II, receives in its turn a row of matrices. 
41780—08-——12 
