Patent GB-190411456-A (GB)
Title: Improvements in Apparatus for Effecting the Exchange of Shuttles in Automatic Looms.
Inventor: HANSEN CHRISTIAN MARIUS
Filed: 1904-05-18
Granted: 1904-11-24
Abstract: 11,456. Hansen, C. M., Muller, C. V., and Carlsson, J. C. E. May 18. Loom shuttle-changing mechanism; stop-motions.- The change of shuttles is effected by means of an exchange box having two spaces, of which the upper normally acts as the ordinary shuttle box. When the weft is substantially exhausted, feeler mechanism acts to close an electric circuit and energize an electromagnet m. The armature l is attracted, and by means of a rod k a pivoted lever h is moved, so that its hooked upper end i will be caught by the edge of a slot in a pivoted lever e which is oscillated by a cam c on the cam shaft. The lever h is raised, and draws up a pivoted lever j, to which it is connected, so that, through a rod n, the exchange-box is raised into the position shown, the upper compartment being in line with fixed guide-plates 29 and the lower compartment being in line with the shuttle-race. The exhausted shuttle is picked from the opposite side of the loom into the lower compartment, and the lowest shuttle in the magazine 5 is carried along the guide-plates 29 into the upper compartment by a plate 3 connected to a bell-crank lever 2, 1. This movement is effected in the following manner :-A cam o on the crank shaft oscillates a pivoted lever q, which carries a bolt r working in a slot s in a rod t. The rod t carries a bolt u, which passes through a slot in the arm 1 of the bell-crank lever and through a slot in the upper end of a rod x pivoted to the lever j. The bolts u, r are connected by a spring y of such strength that the bell-crank lever will be affected only when the rod x is lifted by the upward movement of the lever j. The magazine 5 is pivotally mounted on the frame 8, so that no damage will be done if a shuttle accidentally falls between the shuttle box and the magazine. The front and rear walls 18, 19 of the shuttle box are rigidly connected to the lay, and two bent arms 21 are screwed to the wall 18. The exchange box carried by the rod n consists of a top plate 10 and a middle plate 11 having front walls 12, 13, both spaces being open at the back. Under the plate 10 is a movable plate 14 fastened to two bolts 15, which pass through slots in the plate 10 and arms 21, and are surrounded by springs between the plates 14, 10. The springs press the plate 14 against the upper surface of the newly-inserted shuttle, and hold it. Shoulders on the bolts rest on the plate 10, and prevent the plate 14 from being forced down too far to permit the insertion of the shuttle. When the exchange box is lowered, nuts 16 on the bolts 15 engage the arms 21, so that the plate 14 is brought close against the plate 10, thus allowing free motion of the shuttle. The shuttle-box swell 24 is mounted in a bed adjustably secured by means of a screw to the fixed wall 19. The shuttle in the lower space of the exchange box is held by a bent-in edge on the lower part of the plate 13, which is bent inwards so that the bottom shuttle will force the swell back in order that the upper shuttle may pass in easily in front of the swell when the exchange box is lowered. When this takes place, the empty shuttle falls down a channel 28 into a receiver box. The exchange box is prevented from being carried too far down by arms 30, which engage diverging portions of the rod n. If the lowest shuttle has been wrongly placed in the magazine, the plate 3 will be stopped, and the spring y will extend so that no part will be damaged, and the protector tongue 26 will act in the usual manner to stop the loom.