Patent GB-183599-A (GB)
Title: Improvements in or relating to typographical composing machines
IPC: B41B7/16
Filed: 1921-04-29
Abstract: 183,599. Hart, H., (Mergenthaler Linotype Co.). April 29, 1921. Matrices, magazines, escapements, and key. boards for type-bar-making machines. Relates to machines adapted to handle large matrices without increase in the size of the magazine or other parts of the machine, and consists in arrangements whereby matrices up to and above thirty points in size may be handled. (1.) Founts of matrices X, Figs 7 and 7<a>, which range from eighteen to thirty points, usually comprise seventy-two characters instead of ninety-one as in the case of the normal founts W, and are stored in a magazine A of known form in which the reduced number of grooves are caused to occupy the full width of the magazine, and are irregularly spaced at 'both their upper and lower ends in accordance with the set-width of characters of the largest fount. The channels of the magazine-entrance D, Fig. 6, which is used for the matrices X, and the combinations of the distributor-bar correspond in number and spacing with the grooves of the magazine A. Founts of matrices Z, Fig. 7, which are above thirty-points in size, comprise only fifty-five characters, the figures and some miscellaneous characters being eliminated, and are stored in the same magazine A, but an additional entrance F, Fig. 6, having fifty-five channels is provided. The matrices Z differ from the matrices X, W in having their ears located in varying positions set-ways, as shown in Fig. 9<a>, in order that the matrices may be arranged to the best advantage, some matrices occupying two or more channels, as shown in Fig. 7. The matrices Z are also arranged in a different order as to character from the matrices X. Since the ears are in varying positions on the matrices, the partitions f, Fig. 9, of the entrance. F do not en all cases register with the magazine ribs a, and two partitions are used in some cases to separate adjacent channels. The channels are provided with the known guiding-flanges f<1> on one or both sides. To enable the same distributor-bar C to be used for the matrices X, Z, the tooth-combinations on the matrices Z are arranged in varying positions set-ways, as shown in Fig. 9<a>, so that the matrices are released at the proper points to fall into the channels of the magazine entrance. The entrances D, Fare interchangeably mounted on the machine, the entranceD being pivoted to the magazine-frame A<1>, Fig. 6, and held in operative position by a spring D<2>. The entrance F is supported by jointed arms F<2>, F<4> from a pivot F<5>, so that the entrance may be swung up out of operative position. The arms F<2>, F<4> are provided with stop-shoulders which are normally held in contact by springs F<7>, one spring being attached to the entrance. In a modification, the entrance F is carried by slotted arms F<12>, Fig. 8<a>. which can slide and turn on pivots D<1>. The entrance may be held in operative position by a spring acting through a lever, so that the entrance can be relieved from the action of the spring. (2.) Since the matrices X. Z are arranged in the magazine in different order, means are provided for connecting the keys to different escapements so as to release matrices bearing the same character in either case. The keys E, Figs. 10 and 16, operate either of two series of vertical slides E', E<8>, a pair of slides being provided for each key, and the slides being shiftable laterally to engage either set with the keys. One set E<7> of the slides act directly on the escapement-reeds E<2> through the usual cam-yokes E<3>. The second set E<8> act through bails E<9> on slides E' and escapement. reeds which are displaced laterally from the oper. ated keys. The slides are shifted by means of a sliding frame H, Fig. 10, operated by a hand. lever H<9>. A series of locking-bars is provided tc lock down the bails E<9> when not in use. The keys are looked against operation during the shift by a sliding locking-plate S<2>, Fig. 15a, hav. ing slots through which the key-levers pass, and operated by the hand-lever H<9> or by separate manual maans. The locking-plate also serves tc depress the key-levers at their rear ends so as tc disengage them from the actuating-slides. The hand-lever is held in either position by a spring H<10> attached to a swinging arm H14 which moves between stops H<16>. When the fount of matrices Z is in use, certain of the keys are not required, and are locked bv a toothed bar which engages the corresponding slides E<8>. In a modification, the matrices Z are released by means of a supplemental keyboard which is applied to the main keyboard and is provided with keys M, Fig. 20, acting through rocking bails on key-levers E of the main keyboard which lie in different vertical planes, so that the usual arrangement of the keys may be retained. The supplemental keyboard can 'be turned about a pivot P<1> into and out of operative position. (3.) One or more magazines A containing matrices X may be used in conjunction with magazines Y, Fig. 7<a>, containing normal ninety-character founts W, preferably in a shiftable column of magazines. The magazines A may be divided into upper and lower sections, as heretofore. A keyboard having ninety keys, and a corresponding number of escapement-actuating levers E<10>, Fig. 25, are provided. Owing to the different spacing of the channels in the magazines A, Y, the escapements lie in different vertical planes, and the actuating-plungers E" of the escapements of the magazines A therefore have offset portions e<4> to enable them to be engaged by the levers E<10>. Since the matrices are stored in differently-located channels in the magazines A, Y. an arrangement of shiftable actuating-slides and bails is employed, as described in connection with the matrices X, Z. Five channels of each magazine A are located to the right of the last channel of the magazines Y, and the escapements of these are operated by additional levers E<10> connected by rock-shafts E14 to reeds E<2> which are rot otherwise required for the magazines A. Alternative magazine-entrances are used as before described. A distributor-bar having ninety-one combinations is used, and the tooth-combinations of the matrices X are located in varying positions setways to enable them to fall into the proper entrance-channels. The toothcombinations on the matrices are also rearranged with respect to the characters. Matrices Z may also be employed in such a multi-magazine machine with or without matrices X, a third magazine-entrance and a supplemental keyboard being used if required. One or more supplemental magazines may be arranged at the side of the main magazines.