Patent GB-465721-A (GB)
Title: Improvements in or relating to typographical slug casting machines
IPC: B41B11/38
Filed: 1935-10-09
Abstract: 465,721. Type bar - making machines. CLEMO, F. A. (Mergenthaler Linotype Co.) Oct. 9, 1935, No. 27845. [Class 100 (iii)] Quadding - apparatus.-In apparatus of the kind described in Specification 433,872, the conditioning- mechanism for determining right or left-hand quadding or centring of the line, instead of being adjusted manually, is operated automatically during a machine cycle under the control of keys or of a signal in a perforated tape. It is therefore unnecessary for the operator to watch the casting-mechanism, and lines may be sent through the machine at a greater speed. The vice-jaws E, F, Fig. 2, are operated, as heretofore, by a vertically movable rod H having at its upper end a rotatable collar N, by which the rod can be connected to either or both of the levers E2, F2, that move the jaws. The neutral position of the collar, in which neither jaw is connected to the rod, is, however, also used for left-hand quadding. For this purpose, the pin N<1>, Fig. 13, on the jaw-operating lever E<2>, which normally clears the collar as the rod H descends, is arranged to be projectible into the groove in the collar. The collar is turned into any of its adjusted positions by one or the other of two vertically movable rack-bars O, O<1>, which are guided on the vice frame, and are connected by gearing to the collar when the rod H is in the upper position. The rack-bars are operated by two levers P, P<1>, Figs. 4 and 17, mounted on the first elevator C, and having shoes p<10> adapted to engage over shoulders on the rack-bars. A third lever P<2> on the elevator is adapted to project the pin N<1> when left-hand quadding is required. The levers P, P<1>, P<2> are normally held out of action by three trip-dogs p, and, when released, are moved into operative position by springs. One or other of the dogs p is rocked during the descent of the first elevator, so as to release the corresponding lever, by one of a set of three-slides Q, which are normally held in retracted position, but can be advanced by the action of keys or signals in the perforated tape. The slides Q are advanced against the pressure of springs by levers S, and are retained in advanced position by latch-dogs Q<1>. A set of three pawls q<10>, adapted to engage notches in the slides, serve to prevent more than one slide from being advanced. Directly after a dog p has been operated by its slide, the slide is released by a pawl p<15> on the elevator, and is drawn back by its spring, so that the slides may be immediately reset for another line. The levers S, that advance the slides, are operated by springs when released by bail members S<2> actuated by the keys or by the tape. The selected lever S is not immediately moved to its full extent when released by the bail member, but is retained by a rod S<4> on a lever S<5> until the assembler elevator has nearly reached the line-transfer position. For repeated quadding, any key-lever may be held depressed by a locking-lever. Operation of more than one key is prevented by a pair of pivoted weighted dogs, which are shifted by the depressed keylever beneath the other two. For tape operation, the bails S<2> may be operated by three solenoids, the circuits of which are closed by the code - bars of a Teletypesetter machine. Since the bail members S<2> may be operated irrespectively of any previous setting of the slides Q, it is possible to have a waiting line in the intermediate channel whilst the previous line is still in the first elevator.