An Improved Method of and Device for Cancelling the Action of Incorrect Groups of Holes when Setting Type or Matrices by Means of Register Bands.

摘要

15,738. Lean, C., [Schnellsetzmaschinen-Ges.]. July 24. Type, setting ; type-bar making machines; stereotype matrix &c. machines.-Relates to means for cancelling the action of incorrect groups of holes in perforated strips used for controlling automatic type or matrix-setting machines. A whole line, a word, or a single character can be cancelled by the use of different cancelling - signals. At the end of the cancelled part, the strip is brought into action again by an inserting-signal, which, in the case of a cancelled line, may be the usual line signal, and, in the case of a word, the word-space signal. In the arrangement described, the strip contains eleven lines of holes represented by the letters a to l, Fig. 6, each signal consisting of two holes. The holes in the strip act in known manner on eleven feeling- levers 4, Fig. 1, which close circuits between a conductor 3 connected with a battery 1 and a series of conductors 5. The conductors 5 are connected to electro-magnets 8 which attract switches 20 and close contacts 21. From the magnets 8, conductors 10 lead to electromagnets 25 which actuate the type-setting machine and release the types or matrices. Valve-cells 24 are placed in the circuits, and the magnets 8 are provided with duplicate windings to prevent backward rushes of current in known manner. The circuits are so arranged that any two holes in the strip cause a current to flow through one of the magnets 25 and back to the battery through a conductor 9. In order to cancel lines or words, the circuit is broken by means of switches 18, 14 respectively, which are operated by special signals in the strip. Each switch consists of a bar 51, Fig. 2, which has no fixed pivot but can turn about three contact-screws 54, 56, 57, and two set-screws 55, 58. The bar normally rests with its righthand end against the contact-screw 56, its other end being held down by a catch-leyer 61 against the pull of a spring 59. The current then passes from a terminal 68 through a wire 67, bar 51, and contact-screw 56. The line-cancelling signal i, k in the strip energizes an electro-magnet 63 which trips the lever 61 and releases the bar 51. The bar then leaves the contact 56 and is pulled by the spring 59 against the contact-screw 54 and setscrew 55. The circuit is thus broken and the following signals in the strip do not operate the machine. The line-signal i, l, which occurs at the end of the line, causes a current to flow through an electro-magnet 66 by way of wire 67, bar 51, and contact 54. The magnet 66 pulls down the bar 51 against the contact-screw 57 and set screw 58, the current still flowing through the magnet 66 by way of contact 57. The catch-lever 61 is then caused by a spring 64 to re-engage the end of the bar 51. When the line-signal ceases to act, the magnet 66 releases the bar 51 which is pulled by the spring 59 against the contact 56, thus re-making the main circuit. The switch 14, Fig. 1, for cancelling words is similarly operated. The circuit is broken by an electro-magnet 25 actuated by a special signal a, b in the strip. The word-space signal k, l at the end of the cancelled word re-makes the circuit by means of an electro-magnet 31. Single characters are cancelled by means of a similar switch 72, Fig. 5. When the circuit is broken by the magnet 80 actuated by the special signal, a current can still flow through the magnet 77 and resistance 76 but is so weakened that it cannot operate the magnets 25 of the machine. The signal to be cancelled is thus rendered inoperative but causes the magnet 77 to re-make the circuit so that the following signal is operative. When the strip is fed in the same direction in the perforating and type-setting machines, the cancelling signal must be made in front of the cancelled part either by hand or by suitable automatic means. In order to cancel words, a signal containing b, such as b, e, must be used for the word-spaces, the signal a being added to it to form the cancelling-signal. The signal k, l forms the inserting-signal as before.