Patent GB-184970-A (GB)
Title: Improvements in or relating to typographical composing machines
IPC: B41B11/06
Filed: 1921-07-13
Abstract: 184,970. Hart, H., (Mergenthaler Linotype Co.). July 13, 1921. Magazines and escapements for typebar-making machines Relates to multi-magazine machines, particularly of the class in which the magazines are pivoted or. axes adjacent to the associated distributors, and are shiftable into register with the assembler entrance. (1) The axes of the magazines are arranged one behind the other and in the plane of the top magazine. As applied to machines having the magazines A mounted on bases A' to which are pivoted, by ears F<1>, the magazine entrances F, the bases are provided with arms A<2>, A<4> having a pivot-pin A<3> and round head A<5> mounted in a bracket O<2>, and a socket plate 0<4> on a bracket 0<3> respectively. The axial lines of the two pairs of pivots A<3>, A<5> are arranged one behind the other and in the plane of the top magazine. The arms A<2> are bent outwards to clear the adjacent ears F', and the arm A<4> is bent outwards to clear the adjacent ears F<1>, and then bent inwards to clear the feed-devices of the distributors E. (2) To facilitate removal of the magazines, a device is provided for simultaneously lifting the magazine structure and moving apart the magazines. The device may consist of cams J, Fig. 1. mounted on the lower base A' and connected by links J<2> to the upper base A<1>. On rocking a hand-lever J<3>, the cams engage rollers O<10>. mounted in brackets O<9>, .and thereby simultaneously separate the bases A<1> and raise the magazine structure to a position in which the lower magazine A is above the level of the assembler entrance B. The magazine structure is counterbalanced by means of a spring J<7> connected by a lever J<5> to an arm J<4> on the shaft J<1> of the cams. The shift-mechanism for moving either magazine into register with the assembler -entrance comprises two pairs of toggle-links H, H' connected by a rod H<2>. the links H<1> being pivoted to brackets 0<5>, and the links H having forks engaging pins A<10> on the lower base A<1>. The rod H<2> moves in a slot O<7> in the brackets and engages the forked end of a hand lever H<6>. In the lower position of the magazine structure. the lower base rests on screws A<11>, and in the upper position, the rod H<2> abuts on the front ends of the slots 0<7>; the toggles having passed the dead-centre. A cushioning-device or dash-pot is connected to the toggles. Stops O<6> prevent collapse of the toggles when the lifting-cams J are operated; the stops co-operate also with hooks h<1> on the links, H to prevent the rod H<2> from being moved rearwards. The cams J, being normally separated from the rollers O<10>, permit free operation of the shift-mechanism. (3) The lower magazine entrance F is retained in position by a spring-device. F<2>, Fig. 6, which is carried by the entrance and acts on arms F<7> engaging the lower base A'. The spring-device may consist of two coiled springs f<2> encircling a rock-shaft F<3> mounted on the entrance, the springs being coupled to collars F on the rock-shaft, and having hooks engaging the entrance. The arms F<7> are secured to caps F' on the rock-shaft, and have rollers F<8> engaging the base. The spring-device may be enclosed by a casing F<10>. The upper magazine entrance is retained in position by a spring F", Fig. 1. (4) The upper base A' is provided with gauge-fingers A<6>, Fig. 1, engaging plane surfaces on the lower base. Lips on the gauge-fingers prevent relative lateral movement of the bases. (5) The retaining-latehes C', Fig. 5, for the pivoted frames C<4> carrying the escapements C<5>, are formed as bell-cranks pivoted on the supporting-arms C and provided with screws O<8> carrying nuts C' for tightening the latches.