Patent GB-190804968-A (GB)
Title: Improvements in Machines for Winding Twine and the like.
Inventor: MITCHELL CHARLES PAUL
Filed: 1908-03-04
Granted: 1908-11-12
Abstract: 4968. Mitchell, C. P. March 4. Winding twine &c. -A winding-machine for twine and the like is adapted to wind a cop having a number of superimposed sections of equal axial length (the number of convolutions in each cop length varying in successive sections), a binding-section of smaller axial length, and an enveloping section of greatest axial length. The cop Q is formed on a collapsible mandrel formed of four bars D<5>, Fig. 13, held at one end by a socket formed in a collar D<3> and at the other end by another socket formed in sliding spring-pressed sleeve D<4>. The mandrel is collapsed by means of a wedge inserted in a slot D<2>. On beginning to wind the cop, the driving-shaft B drives, through gearing e, e', c<4>, c<5>, a cam shaft C carrying a cam L which reciprocates a slide T'. The slide oscillates a rod T on its fulcrum T3 carried by a fulcrum bar U, and the rod reciprocates a sleepe p on which the twine-guiding arm S is mounted. The driving- shaft also drives the cop shaft D through gearing b, b<1>, h', i, i<1>, j, Figs. 1 and 4. The relative speeds of the cam and cop shaft are such that the twineguiding arm S is reciprocated at such a speed relative to the cop shaft as to wind four convolutions of twine to the length of the cop. This winding continues until a regulating contact-roller H' is raised sufficiently by the growing cop to rock a shaft J, Fig. 6, through connecting-linkage H', P'. The shaft J carries a series of locking-segments and cams o as shown in Fig.6, and the movement of the shaft removes a locking-segment o<2> from a lug n<2> and allows a spring m<5> to move an arm m<2> and clutch K<1> to the right of Figs. 1 and 2, so that the clutch is disengaged from the gear e and engaged with gear d. A clutch K, Figs. 7, 8, and 12, has an internal part k<3> adapted to be pushed into engagement with an external part f by a spring k<4>. Several such clutches are used, and are either formed as above described or have in addition gear teeth formed on the outside of the rim of the external part. The cam shaft is then driven through the gear d, d' and at such a speed that three convolutions of twine are wound to each length of the cop. When this section of the cop has been built up to the desired diameter, the contact-roller H<2> is raised sufficiently to unlock a segment o<1> so that a clutch K<2> is operated to disengage the gear d' and engage gear a<1>. The cam shaft is then driven so as to wind two convolutions to each length of the cop. When this section of the cop has been built up to the required diameter, the locking-segment o is released, and auxiliary gearing g, h is brought into action, which reduces the rotations of the cop shaft instead of increasing the rotations of the cam shaft as in the preceding cases, so reducing wear, and one convolution per length of cop is wound. When the fourth section is complete, a cam on the shaft J actuates a rocking lever v<3> so that a counterweighted cam u<2> comes into action and raises the sliding fulcrum T<3> of the oscillating rod T and so shortens the traverse of the twine-guiding arm and causes a narrowband section to be wound. When this section is complete, a rocking lever v<2> is actuated and the counterweighted cam is again moved so that the sliding fulerum is lowered and a longer traverse given to the twine-guiding arm, causing an enveloping section to be wound and so completing the cop, and causing a catch lever P' to release the belt-shifter lever so that a spring actuates the belt-shifter and the belt is transferred to the loose pulley. When it is desired to build a band or cop section shorter than the length of the cop and located at one side of the centre of the cop, the shaft D is automatically moved axially when required by the device shown in Figs. 2 and 6. When the fulcrum bar U rises to shorten the traverse of the twine guide a, it strikes an arm e<2> on a shaft I, releases a stop screw d7, and allows a spring d<9> to act on a yoke D<6> on the cop shaft D and so slide the cop shaft axially. A hand-lever O and cam-devices are used for axially sliding the shaft F and setting the clutches on the shaft. The twine guide S<1>, Fig. 16, is formed as a hard perforated block with a convex rubbing- surface, adapted to ride easily over inequalities on the surface of the cop Q and to expose a large surface to the cooling effect of the air.