Wireless Transmission of Photographs

"[...]bearing D' having an internal thread corresponding to that on the shaft. The stylus in this class of machine is a fixture, the cylinder being given a lateral as well as a revolving movement. As it is impossible to use a rigid drive, a flexible coupling F is employed between the shaft B and the motor. Fig. 6. Fig. 6. Another type of machine is shown in Fig. 7. The drum in this case is stationary, the table T moving[...]".