Patent GB-191215962-A (GB)
Title: Improved Process and Apparatus for the Manufacture of Perforated Register Bands for Controlling Typewriting, Type-casting, and like Machines.
IPC: B41B25/00
Filed: 1912-07-08
Granted: 1913-04-17
Abstract: 15,962. Marks, E. C. R., [Marchthal, E. M. von]. July 8. Strip-perforating machines.-In machines for making perforated strips for controlling typewriters, type making and setting machines, &c., means comprising one set of punches and two feeding-devices co-operating as described below with a looped part of the strip are provided for placing the justification-symbols at the beginning of the lines. The invention is described as applied to the electrically - operated machine described in Specification 22,068/11, in which the punches 15, Fig. 3,. are carried by an oscillating frame 2 and are selectively operated by engaging interponents 18 set by the keys, the machine also comprising a typewriter for printing a copy of the matter. According to the invention, the strip 100 is doubled over a guide 22, Fig. 3, and engaged by two feed-wheels 12,14 in action one at a time, the feed-wheel 12 forming the loop II during the punching of the textsymbols, and the feed-wheel 14 drawing up the loop during the punching of the justificationsymbols, which, in the case of controlling-strips for typewriters, may include a carriage-returning symbol. The guides 7, 8 for the punches are spaced apart to receive a perforated plate 9 formed with the guide 22, which projects so far that the tightened loop I is of the length required for the justification-symbols for a line. The feed-wheels 12, 14 are provided respectively with ratchet-wheels 5, 6, Fig. 1, adapted to engage during the upward swing of the frame 2 about the shaft 1 with pawls 21, 20 pivoted to fixed standards 70. The pawls are connected bv springs 33, 32 and links 36, 35 to a shaft 41, which can be rocked in one direction by the justification-starting key and in the other by the key controlling the returning of the carriage of the typewriter forming part of the machine, the arrangement being such that only one of the pawls is operative at a time. The justification-starting key, when depressed, is locked by a catch which is released by depressing the carriage-returning key. These keys also close contacts controlling the typewriter forming part of the machine. The punches pass through both the top and the bottom parts of the strip, the character-perforations being rendered inoperative on the justification part of the strip, and vice versa, by arranging the carriage-returning and justification-starting keys to punch all-hole or error symbols in the strip. The strip can also be fed forward by means of a hand-operated rack 73 adapted to engage the ratchet-wheel 5 when the frame 2 is depressed below its normal lower position by means of a lever 82. The rack is adapted on each operation to feed the strip through the space occupied by the justification - symbols. The rack is operated at the beginning of each line to provide after the justification-symbols a blank space for corrections. In composing central titles, the title and the justification-symbols are composed in the manner described above, the justification-values corresponding to the length of the title being read from a table. In the case of short titles, the rack 73 is operated twice to provide the required space for the justification-symbols on the strip.