A constantly rotating rubber-covered roll c5 is extended across the entire keyboard beneath the cams, which stand normally as shown in Fig. 5, out of contact with the roll.  When the parts are in this position, the cam-yoke is sustained at its free end by the yoke-trigger c8, and a cross-bar in the cam engages a vertical pin c7 on the frame, whereby the cam is prevented from falling on to the roller, as it has a tendency to do.  Each of the yoke-triggers c6 is connected with a vertical bar c8, which is in turn connected to the rear end of a finger-key lever D.  The parts stand normally at rest in the position shown in Fig. 5, the roll c5 turning freely under the cam without effect upon it.

When the finger-key is depressed, it raises the bar c8, which in turn trips the yoke-trigger c6 from under the cam-yoke c2, permitting the latter to fall, thereby lowering the cam c4 into peripheral engagement with the rubber roll, at the same time disengaging the cam from the stop-pin c7.  The roll, engaging frictionally with the cam, causes the latter to turn on its centre in the direction indicated by the arrow in Fig. 6.

Owing to the eccentric shape of the cam, its rotation while resting on the roller causes it to lift the yoke c2 above its original position, so that it acts upon the escapement rod C, lifting it and causing it to reverse the position of the escapement B, to release the matrix, as plainly seen in Fig. 6.

While this is taking place, the yoke-trigger c6 resumes its first position, as shown in dotted lines in Fig. 6, so that as the rotating cam lowers the yoke, it is again supported in its first position, the cam at the same time turning forward by momentum out of engagement with the roll until arrested in its original position by the pin c7.

It will be observed that the parts between each key lever and escapement operate independently of the others, so that a number of cams may be in engagement with the rollers at one time, and a number of escapements at different stages of their action at one time.

The matrices falling from the magazine descend through the front channels and are received on the inclined belt F, on which they are carried over and guided on the upper rounding surface of the assembler entrance-block f1, by which they are guided downward in front of the star-wheel f2, which pushes them forward one after another.

The spaces or justifiers I, released from their magazine H, as heretofore described, descend into the assembler G in front of the star-wheel in the same manner as the matrices.

The line in course of composition is sustained at its front end by a yielding finger or resistant g, secured to a horizontal assembler slide g2, the purpose of these parts being to hold the line together in compact form.