Patent GB-191001962-A (GB)
Title: Improvements in Hackling Machines for Flax and other like Fibres.
IPC: D01B5/00
Filed: 1910-01-26
Granted: 1911-01-26
Abstract: 1962. Greeves, J. & T. M., and Eves, R. V. Jan. 26. Heckling-machines. - In heckling - machines such as are described in Specifications 16,010/01, 19,118/03, 19,583/07, and 3998/08, of the type in which the stricks of flax are clamped in holders and passed between two revolving sheets of heckle pins and then readjusted in the holder and passed through the heckle sheets of a second machine, means are provided for removing automatically the short fibres or tow from the middle portion of the stricks in the neighbourhood of the clamps. Mechanism is provided at the finishing-end of the second machine for unscrewing and re-screwing the holder, for readjusting the strick in the holder, and for turning the holder over to bring the middle part of each piece between the endless heckle sheets of a finishing-machine. Fig. 1 shows diagrammatically an arrangement of a heckling-machine in which the stricks are placed in the holders in the cross-channel 3, and are then passed along the elongated channel 5 of the machine 1, between the sheets of heckle pins, and subsequently past a touch-pin 6 of the kind described in Specification 19,118/03, and through a finishing-machine 7, in which the tools of at least one row on each sheet are of the kind described with reference to Figs. 4 to 15 of Specification 19,118/03. The holders then pass to a cross channel 4, where the holders are unscrewed and the position of the strick adjusted as described in Specification 16,010/01. The readjusted stricks are then passed along the channel 5 of a machine 2, past a second touchpin 6, and through a finishing-machine 7. They then pass through an automatic device 8, in which the holders are turned and the flax readjusted, and are delivered to an additional channel 5<a>, which moves synchronously with the channel 5, and along which they are passed through an additional finishing-machine 7<a>. The devices 8, 7<a> may be duplicated. The channels 5, 5<a> are fitted with transferring-devices 9 such as are described in Specification 3998/08. As an alternative arrangement, the holders may, after they have passed through the second machine, be passed along a short stationary channel 5<b>, Fig. 2, through an automatic device 10, which unscrews and re-screws the holders and readjusts the flax in them, and be delivered to a channel 5<c>, along which they are conveyed past a touch-pin 6 and through a finishing- machine 7. The holders then pass to a turning- device 11, which inverts the holder so that the finishing-machine 7<a> can operate upon the middle portion of the strick. The devices 10, 11, 7<a> may be duplicated. Further, the automatic device 8 and a finishing-machine 7<a> may be placed at the delivery end of the machine, the device 8 delivering the holders to the crosschannel 3, and the device 7<a> being placed outside the channel. The automatic device 8 comprises a turntable C, Figs. 6 and 7, with four arms c<1> ... c<4> placed between the channels 5, 5<a>, Each arm is grooved to receive the flax-holders A and is mounted on a spindle carrying at its inner end a bevel-wheel c<6>, which gears with a stationary wheel c<7> on the stud about which the turntable rotates. The turntable is intermittently rotated one quarter of a revolution for each lift of the heckling-machine by a mutilated pinion D gearing with a pinion C' on the turntable, and is locked in position after each movement by a plate C' and a locking-disk D' on the same spindle as the pinion D. As the turntable C rotates, the arms c<1> ... c<4> turn about their axes, making one revolution for each rotation of the turntable. The flax-holders are transferred from the channel 5 to the arm c<1> in the position shown in the figure. The turntable C then rotates, and the arm is turned into an horizontal position under an unscrewing and re-screwing device E similar to that described in Specification 19,583/07. A box key e, to engage the nut a<1> of the flax-holder A, is carried at the end of a sliding spindle which is lifted and lowered at the required time by a cam G<2> on the shaft g<4> and a lever g<2>. The spindle is rotated to unscrew the nut a<1> by a bevel wheel e<3> clutched to the shaft F at the correct instant by a spring clutch f, controlled by a cam G and lever g, and to re-screw the nut by a bevel-wheel e<4> clutched to the shaft F at the required time by a spring clutch f<1> controlled by a cam G<1> and a weighted lever g'. The clutch f is arranged to slip out of gear when the nut is sufficiently screwed up. While the holder is unscrewed, the end of the strick is seized by jaws h, h<1>, which are carried by levers H, H<1>, operated by cams h<3>, h<5> on a shaft h<4> driven from the shaft g<4>, and the strick is drawn through the holder, which is then re-screwed. The turntable then moves on, and the arm next stops opposite the channel 5<a>, into which the holder is moved by a lever L which is operated by a cam L<1> on the shaft h<4> and engages a lug a<2> on the holder. A second lever L linked to the first moves the holders from the channel 5 into the groove of the arm opposite to it. The automatic mechanism 10 in the alternative arrangement for unscrewing and re-screwing the holders and adjusting the stricks in them comprises a stationary channel 5b, Fig. 9, constructed of parts K, K<1>, the latter of which can be pressed back against the action of a spring k<3>. The holders are moved out of the channel 5 into the channel 5<b> and from there into the channel 5<c> by a bar N with pivoted weighted catches n, which slides on a bar n<1>, which is operated by a cam N' through a lever n<4> linked to a second weighted lever n<3>. The unscrewing and re-screwing of the holder A is accomplished by a box key e arranged horizontally, and the flax is drawn through the holder A by jaws h, h<1>. Both the box key e and the jaws h, h<1> are operated in a manner and by means similar to those described in connexion with the automatic device 8. The automatic turning-device 11 comprises a carrier O, Figs. 11 and 12, for the holders A arranged in a drum frame P, supported on carrier rollers r, r' mounted on a vertically adjustable frame R. The drum P is intermittently rotated by a pawl p<3> adjustably carried on an arm p<2> oscillated by a cam-operated lever and engaging the four stays p of the drum. The pawl is operated twice for each lift of the heckling-machine, thus reversing the holder each lift.