mold. Once the matrices are in proper position, two actions take place in sequence: the matrices are aligned vertically and face-wise while a bar rises from below to force the movable sleeves on the space bands upwards to cause them to fill out the line to the exact width of the mold. If the justification bar has made a full cycle and the line is still not fully justified, the second safety, the pump stop, prevents the plunger in the metal pot from going down. The space bands were an important feature of this machine, providing automatic justification of each line by equally adjusting the white space between each word. Since the type used was proportional and not fixed in width, solving this justification problem mechanically was very important. Some later models had a feature that permitted the lines to be cast with the alignment to either left, right or centered. Operators running earlier models would use special ‘blank’ matrices (in four sizes) to manually create the proper amount of whitespace beyond the space bands’ range. With the matrices aligned and the space bands set to the correct measure, the machine then ‘locks up’ the line with great force and the plunger injects the molten type metal into the space created by the mold cavity and the assembled line. The machine then separates the mold disk (carrying the freshly cast slug), the metal pot, and the first elevator. The mold disk then turns to present the line at the ejecting position, in the process passing by a knife that trims the base of the slug to type height (0.918″ on US machines). The slug is then forced through an adjustable pair of knives to trim the slug to the proper body height before sliding down into a ‘galley’ of finished lines next to the operator. Depending on the model of machine, the mold disk could have four (standard), six, or two molds, giving the operator his choice of line lengths and body sizes. As the mold disk is turning, the first elevator simultaneously rises to its upper position and the space bands and matrices are vertically aligned in preparation for the second transfer. The matrices have a series of teeth in a V-shaped notch on top, and as the transfer is completed, the matrices slide onto the second elevator bar which carries the matrices by these V-shaped notches. The space