Abstract: An apparatus transfers bobbins mounted on peg trays by way of an endless transmission belt trained about and driven by guide pulleys in a required passage. The apparatus comprises two elongated guides slidably contacting the peg trays and elastically embracing the peg trays between the elongated guides and the endless transmission belt. The endless transmission belt and the two elongated guides are twisted at required positions to twist a passageway of the peg trays formed by the transmission belt and the elongated guides. Therefore, the bobbins are able to pass through their passageway without interfering with each other.

Abstract: Apparatus for transferring empty and full bobbins to and from a plurality of juxtaposed spinning machines makes use of peg trays each having a peg engageable with a bobbin. The apparatus includes stationary bobbin transfer devices arranged on both sides of each spinning machine, and full bobbin and empty bobbin transfer conveyers both supported by a ceiling to intersect with the longitudinal direction of each spinning machine, above end portion of the stationary bobbin transfer devices thereof. The apparatus further includes a movable bobbin transfer device with an endless belt and linear guide members cooperating with the belt for resiliently engaging with each peg tray. The movable bobbin transfer device is arranged so as to be movable along the conveyers to receive empty bobbins from the empty bobbin transfer conveyer and deliver full bobbins to the full bobbins transfer conveyers.

Abstract: A low-temperature heat-shrinkable film having a haze value not larger than 8%, a heat shrinkability in the machine direction at a temperature of 90.degree. C. of at least 30%, and a shrinkage stress of at least 300 g/mm.sup.2, is made from a composition comprising (a) a linear ethylene polymer containing short-chain branches and having a density not larger than 0.940 g/cm.sup.2 and (b) an ethylene/propylene random copolymer containing 3.5 to 10% by weigh of units derived from ethylene, wherein the proportion of the ethylene/propylene random copolymer in the composition is 15 to 50% by weight.

Abstract: A bobbin carrier in a spinning machine for carrying out full-bobbins from one of a pair of carriers and carrying in empty bobbins to the other of the carriers through peg trays by a full-bobbins-carrying conveyor and an empty-bobbin-carrying conveyor to a plurality of spinning machines arranged in parallel with one another. An endless belt is provided over both of the carriers and the full-bobbins-carrying conveyor and the empty-bobbin-carrying conveyor, and pulleys guide the belt, further a motor is operatively connected to the belt to drive the belt. A pair of linear guiding members are arranged so as to extend along the belt and gasp pegs of peg trays. The belt carries the peg trays with grasping the trays elastically with pressure in cooperation with the guiding members. A full-bobbin-introducing portion is provided in the full-bobbin-carrying conveyor and allows giving and receiving of the peg trays from the belt to the full-bobbin-carrying conveyor.

Abstract: A first sliver in an exhaust can (2F) is introduced and held in a recess (38a) of a sliver piecing unit (38) while gripped by a sliver gripper (34). The first sliver is severed by the displacement of the gripper (34) away from the recess (38a) so that a trailing end of the first sliver is formed in the recess (38a). Next, a second sliver in a reserve can (2B) is introduced and held in the recess (38a) in the same way as for the first sliver and a leading end of thereof is formed in the recess (38a) so that the sliver ends overlap each other. The piecing operation is carried out on the overlapped sliver ends in a known manner.

Abstract: A method and apparatus for exchanging exhausted roving bobbins for full packaged roving bobbins applied to a conventional ring spinning frame provided with at least one roving supply rail arranged at a position in front of the spinning frame, at each side thereof, wherein a unit operation for exchanging exhausted roving bobbins suspended by front and back bobbin hangers, facing each other on a creel, for full packaged roving bobbins previously carried to the predetermined supply positions thereof on this supply rail, is carried out stepwisely from one side to the other side of the spinning frame along the creel, with regard to each pair of front and back bobbin hangers on the creel to which such a unit operation is to be applied, by utilizing only two pegs for temporarily supporting roving bobbins capable of changing the axial distance thereof between an axial distance (b) between the front and back bobbin hangers, facing each other on the creel, and an axial distance (a) between two adjacent bobbin hangers o

Abstract: A clearer mechanism for a draft roller, a clearer holder supporting a clearer member therein, and a suspensory member suspended from the draft roller and detachably supporting the clearer holder such that the clearer member is held against a working periphery of the draft roller. The mechanism further includes an actuating member or a restraining member projecting from either of the clearer holder and the suspensory member for displacing the actuating member or the restraining member to thereby reciprocally move the clearer holder along the working periphery of the draft roller.

Abstract: A method and apparatus for piecing rovings introduced from almost exhausted roving bobbins suspended by two rows of bobbin hangers mounted on a creel of a conventional ring spinning frame provided with a roving bobbin supply rail disposed in front of the creel, with rovings introduced from full packaged roving bobbins previously carried to the respective supply positions of the supply rail, said for exchanging the almost exhausted roving bobbins for the full packaged roving bobbins. A piecing rovings operation is carried out for each pair of almost exhausted roving bobbins suspended by a front row bobbin hanger and a back row bobbin hanger of the creel, facing each other, together with two corresponding adjacent full packaged roving bobbins of the supply rail, respectively.

Abstract: A retainer frame supportiing pat type clearer members is arranged in opposed relation to a draft roller. The retainer frame is inserted at both longitudinal end portions thereof into insert grooves of supporting brackets mounted on roller stands or draft roller bearing members placed on the roller stands. The retainer frame is formed by folding a metal plate. Each of the clearer members is formed with stopper lugs at both side edges thereof. With this arrangement, each clearer member may be easily installed into the retainer frame, and a uniform projection of the clearer member from the retainer frame may be maintained.

Abstract: A method and apparatus for switching the relative position between roving bobbins held by bobbin hangers of a front row and the roving bobbins held by the rear row in a spinning frame. The roving bobbin exchange operation is carried out as successive unit operations from one end-side of the spinning frame to the other end-side thereof. In each unit operation, first the axial distance between a bobbin hanger of the front row and a bobbin hanger of the rear row, which are positioned adjacently in the lengthwise direction of the spinning frame, is reduced to a predetermined distance, then the relative position of those two bobbin hangers is reversely changed while maintaining the reduced axial distance. Thereafter, the axial distance between those two bobbin hangers is returned to the initial condition for carrying out the spinning operation.