Patent GB-506305-A (GB)
Title: Method of, and apparatus for, photographically producing type-copy, particularly foroffset and intaglio printing, by means of a matrix-composing machine
IPC: B41B15/24
Filed: 1938-05-20
Abstract: 506,305. Photographic type-composing INTERTYPE, Ltd. May 20, 1938, Nos. 15085 and 15086. Convention dates, May 24, 1937 and Oct. 14, 1937. [Class 98 (i)] Type copy is produced by means of a matrix composing machine in which the line elements are so displaced separately out of the justified line that they arrive separately in front of a camera lens and the characters are photo. graphed in the form of a type line with correct word intervals. Each displaced matrix and the camera lens are brought into the correct position relative to a stationary film which is only advanced from line to line. The photographed characters have the same relative positions as the corresponding matrices in the justified line. The line 1; consisting of matrices as in Fig. 6, and wedge spaces, is arranged in a casing 2, and is justified by bars 3 vertically movable by an eccentric 6 acting on lever 7. The line is retained between a rigid wall 4 and stop 5. In the justifying position,'the rods 3 are held by a bolt 10 under the action of spring 11 when the lever 13 is not pressed down by cam 12. The matrix at the left end of the line is engaged by a hook 14 and led to one side in a groove 15, Fig. 2. The hook 14 is pivoted at 17 to a slide 16 moved by an eccentric 18, lever 19 and link 20, until its surface 22 contacts with the stop 23, which is at such a position that the matrix is then in correct photographing position. After each character is photographed, the stop 23 is moved to the left to an extent proportional to the shortening of the line. For this purpose, stop 5 is carried by a rack 24 engaging a pinion 25 on a spindle 26 carrying another pinion 27 gearing with a rack 28 in contact at its end with a lever 30 pivoted at 31. The lever. 30 is spring-biassed towards the left so that the stop 5 is pressed against the aid of the line, and after each removal of a matrix the stop 5, rack 28, and stop 23 move a corresponding distance to the left. The rack 28 carries arms 32, 34 with lens 33 and light source 35, which thus move relatively to the film 36 at the same time as the stop 23 which determines the photographing position of the matrix. The rack 28 may also be associated with a shutter. The wedge spaces in the line fall out when the slide 16 moves back to fetch the matrix just behind the wedge space in the end position. The slide during its movement releases detents which allow the spaces to fall just before the hook engages the next matrix. The stop 5 then presses the line together for a distance representing the sum of the removed space and matrix. The camera is actuated manually or automatically and the next matrix is then taken from the casing 2. After the whole line is photographed, the film is advanced the distance between two lines. The pinions 25, 27 may be chosen so that the reproduced line has any desired length. A. modified construction is described in which the stop 23 is adjustable relatively to light-sensitive surface. Specification 496,886 is referred to.