Patent GB-113149-A (GB)
Title: Improvements in Tape Perforators.
Inventor: GREEN BERNARD JOSEPH
IPC: H04L15/14
Filed: 1917-02-14
Abstract: 113,149. Green, B. J. Feb. 14, 1917. Selective punching - machines.-Relates to a. keyboard perforating - machine particularly for making telegraphic tape, and con sists of (1) a device for changing the code, (2) punch-selecting mechanism (3) variable-feed mechanism for the tape, and (4) combination-key mechanism for eliminating the space be. tween signals. (1) Eact key-lever, except the combination key, is connected to a number of combs which are notched for different codes and can be set one at a time in engagement with the permutation bars. As shown, each key-lever a Fig. 2, is provided with two combs b, b<1> formed with notches b<2>, b<3> for different codes, for example Morse and cable respectively. The combs b, b<1> are also formed with inclined slots b<4>, b' respectively, engaging pine a<1> on the key-lever, and the rear ends of the combs are recessed to receive eccentrics c<1> on a shaft c. By rocking the shaft in one direction or the other, all the combs b or all the combs b' can be depressed to engage the permutation bars e. (2) The punch-mechanism comprises the usual hammer 2 which is connected to a lever 11, operated by a solenoid 7 and a spring 13, and carries interponents 5, 5<x> for actuating the upper and lower rows of punches 3, 3<x>. The permutation bars e are formed with arms e<1> pivoted at e<2> and bear on bars g which are formed with arms g<1> carried alternately by links h, j which are connected to the links 6, 6<x> for actuating the interponents 5, 5<x> respectively. Links l, m and combs n are provided for guiding the bars g. (3) The feed of the tape is controlled by stops o which co-operate with a finger p on a feed-bar p<1>, Fig. 3, connected to the feed-wheel 15, the arrangement being such that, at each operation, a number of stops corresponding to the length of the signal is moved out of the path of the feed-finger, and the feed-bar is arrested by the engagement of the feed-finger with the first stop that has not been moved. The stops work in slots in the hammer 2 and each stop is connected by a link o<1> to two adjacent links h, j, each stop being thus associated with a pair of interponents 5, 5<x>. The links o<1> are depressed by springs o<3> and are formed with slots o<2> engaging pins on the links h, j. The feed-bar p' gears with a segment s<2> carrying a pawl s engaging a ratchetwheel 16 on the feed-wheel shaft. The feed-bar is connected by a band r' to a spring drum rand is normally restrained by the engagement of a step p<2> with a member or roller q<8> carried by a lever q<4> which is connected to the operating-lever 11. The feed-finger p is normally at a distance of one space from the first stop o, and the maximum travel of the feed-bar is determined by an adjustable stop p<3> in the path of the feed-finger. At each operation, the lever q<4> is swung through a constant arc by the operating-lever 11, and the feed-bar is traversed by the spring drum until the feed-finger is arrested as described above, the pawl s moving idly. During the return movement of the operating-lever, the lever q<4> returns the feed-bar and the pawl operates the ratchet-wheel. (4) The member or roller q<8> is formed with a step, of the width of one space, and can be lifted by the combination-key v, Fig. 4, to set the smaller part opposite the step p<2> on the feed-bar. If the combination-key is depressed, the return movement of the feed-bar and the feed of the tape are diminished by one space and the space between the punched signal and the next signal is eliminated. The lever q<4> that carries the roller q<8> can slide on a pin q<5> and is connected by a link v<z> to the combination-key, a spring q<7> normally keeping the arm depressed. A bell-crank q<3> pivoted on the pin q<5> is provided with a pin q<6> which passes through a hole in the arm q<4>. The bell-crank is connected through a lever q<1> to the operating-lever 11.