Patent GB-190916660-A (GB)
Title: Improvements in Machines for Punching Cards for use in Weaving Looms.
Inventor: MATTHIJSSEN PIETER
IPC: D03C17/00
Filed: 1909-07-16
Granted: 1910-07-18
Abstract: 16,660. Matthijssen, P. July 16. Cards, punchi n g. - I n a n electro - magnetic machine for punching jacquard cards, in which an electrically - conducting style traverses a pattern comprising conducting portions and non- conducting portions, a number of electro - magnets are caused to travel in front of rows of armatures controlling the punches, thus enabling the number of magnets employed to be less than the number of punches. The current from a battery 4, Fig. 1, is sent by means of a distributing-switch 22 through a number of electro-magnets such as 6, the switch causing the electro-magnets to be placed successively in the circuit, so that when the style 8 is passing over a conducting part of the pattern 1, the corresponding electro-magnet is energized and an armature 9 withdraws the corresponding stop 12 from a needle 13 carrying a punch 14. The switch 22 comprises a roller which is carried by a revolving arm and successively bridges over pairs of contact-pieces arranged in two concentric circles. When the card 17 is raised by the perforated plate 15, the needles over which the stops 12 still rest cause the corresponding punches 14 to perforate the card. After each punching operation, the armatures are re-set by means of a vertically-reciprocating plate 23 acting on inclined bars 11. The electro-magnets are supported by a reciprocating frame which carries them successively in front of different sets of armatures, thus enabling each magnet to control several different punches. The style 8 may be mounted on the reciprocating frame which carries the magnets. In order to provide for the bindings in the pattern and in the ground of the fabric, a second switch is placed between the style 8 and the distributing-switch 22, this said second switch being so arranged that it causes some divisions of the cards to be perforated and other divisions to remain unperforated irrespective of the reading of the style 8. This switch comprises a disk m, Fig. 6, carrying contactpins m<4>, and adapted to rotate in front of a fixed plate i provided with a contact-ring l and with as many contact-pins j as there are pins m<4>. A' ring m<1> carried by the disk m is engaged by a brush m<2> and is connected electrically to all except two of the pins m<4>, one of these two pins being connected electrically to the ring 1 by a bridge-piece m<9>. After each card has been cut, the disk m<4> is turned through the angular distance separating adjacent pins j. In a modified arrangement of the switch adapted to produce different bindings in the figure and in the ground of the fabric, a second set of contact-pins are carried by the plate i and are arranged in a circle surrounding the ring 1, the bridge-piece m<9> being arranged to put the second set of contact-pins successively in communication with the ring 1. When the gait-over of the bindings is neither a multiple nor a factor of the number of electro-magnets employed, an additional switch is placed between the switch shown in Fig. 6 and the switch 22, Fig. 1, to produce the correct sequence of perforated and unperforated portions in the successive cards. The additional switch comprises a fixed plate p, Fig. 12, carrying a number of contact-pieces s arranged in a circle, and within this circle are placed a number of contact-rings r. A rotating disk u carries connexions v, one communicating electrically with each ring r. As the disk u rotates, each ring r is connected successively to all the contacts s by means of a brush v<2> on the corresponding connexion v.