Patent GB-190322677-A (GB)
Title: Improvements in or relating to Circular Looms for Weaving.
Inventor: HILL CHARLES GREY
Filed: 1903-10-20
Granted: 1904-11-19
Abstract: 22,677. Hill, C. G. Oct. 20. Circular looms; 8top-motions ; shuttles.-In a circular loom such as is described in Specification No. 19,743, A.D. 1900, means are provided for stopping the loom if a shuttle meets an obstruction in the shed, or if the weft tension becomes excessive. Each shuttle A, Fig. 4, is provided with a detector C attached to the end of bar C', which has a slot C', and is mounted on rollers C' in the shuttle. When the detector C meets an obstruction in the shed, such as may be caused by a broken warp thread, it is stopped, and, as the shuttle advances, the bar C' slides into the shuttle, the upper end of the detector working in a slit in the shuttle plate A<2>. A catch C<4> on the bar C' releases a plate D, hinged to the shuttle, so that the free side of the plate D is raised by a spring-actuated pin. The weft thread may, on its way from the cop A' to the delivery arm A<5>, be carried through an eye attached to the detector C, so that the latter is pulled back towards the shuttle and the plate D released when the weft tension becomes excessive. Fingers E', Fig. 1, are fixed to pivoted segmental pieces forming a ring E round the shuttle-race, and the fingers are placed at such a distance apart that at least one finger E' is always over the plate D. When the plate D is raised, it lifts a finger E', and turns the corresponding segment of the ring E, so that an arm E<5>, fixed to the segment, acts through a link J<5> and a strap connecting two pivoted arms J<1>, to depress the arms J<1>, which carry a segment of a ring J. The segment is lowered, and its toothed lower edge engages a latch F' pivoted on a wheel F, which is mounted on the central column of the loom, and is constantly rotated, with the operating cam-rings of the loom. The latch F' is turned on its pivot and releases a bolt F<1>, which is then depressed by a spring F', so that its lower end engages the teeth H<1> on a wheel H, loosely mounted on the central pillar of the loom, and supported on antifriction rollers H<2> on a fixed wheel G. The wheel H is thus coupled to the wheel F, and is rotated with it, causing a projection M<1> on a pivoted lever M to be forced out of a recess in the wheel H. The lever M is forced back, and a camsurface M<4>, on a link M<3> attached to the lever M, raises a bolt N which raisee a catch link K', so that its catch K<2> is freed from a stop K<3>. The link K<1> is connected to the starting-lever K, and when it is released the lever K is drawn outwards by a spring K<4>, and causes a friction clutch L to be released and the loom stopped. The lever K may be connected by a link to a tumbler lever, which, when the lever K is acted upon by the spring K', turns over, and releases a brake lever. The brake lever is caused by a spring to apply a brake to a brake wheel 0 on the main driving-shaft. A second brake wheel of large diameter may be mounted on the central column of the loom, and one or more brake blocks be used in connection with it, and controlled from the lever K as described above.