Patent GB-190215084-A (GB)
Title: Improvements in Machinery for Spooling Sewing Thread or other Fibrous Material.
Inventor: BAINES EDMUND NORBURY
Filed: 1902-07-07
Granted: 1903-06-11
Abstract: 15,084. Baines, E. N., and Schmidt, J. W. July 7. Spooling -machines.-Comprises mechanism for spooling, for nicking and ending the spools, and for removing the finished spools and replenishing the spindles with empty ones. The spindles A, B, Fig. 7, between which the spools are held, are arranged at right-angles to the length of the machine. The back spindles A are driven by toothed gearing, and for replenishing and doffing purposes are carried by a sliding bar C operated by cams. The front spindles are carried by the bars V, IL, of which the lower bar IL has a limited transverse movement with respect to the bar V. When applying empty spools to the spindles, the spools are brought into the desired position between the spindles, which advance towards one another so as to grip the spools between them. When doffing, the back spindles A are first withdrawn, leaving the spools supported only on the spindles B. The bar V is then moved backwards, the first effect of which is to carry with it also the doffing-bar IL, until the latter is blocked by stops, when further movement of the bar V causes the bobbins to be removed from the spindles by the bar IL. The guideshafts 3D are connected by wires to quadrants 2Z on a shaft 2U, which is rocked by a loose quadrant 2T, the latter being connected on the one hand to the shaft 2U through a spring connection 2W, 2X, and on the other by means of wires with the bar 2N traversed by the split nut 2M of the traverse screw, which is driven in opposite directions alternately through spur gearing and a clutch 2K. The limits of the traverse are determined by inclined and adjustable plates 3H, 3J, Fig. 8, on a traversing-carriage 3G. Between the plates moves an adjustable stop 30, connected by the rods 3N, 3M and link 3L to a bracket 3K on the traversing-bar 2 N. When the stop 30 is blocked by one of the plates 3H, 3J, the bar 3M turns about its centre, and operates a lever 3Q, which charges one of the springs 3W, 3X, Fig. 7, on the clutch reversing.rod 3V, and, when moved sutticiently far, the inclined block 3S thereon releases the locking-catch 4D. The rod 3V is then moved by its spring longitudinally so as to reverse the clutch 2K, and is locked by the remaining catch 4C. The carriage screw 4H, Fig. 8, is operated bv ratchet mechanism 4K from the lever 3Q. When the cam shaft commences to revolve, the ratchet pawls are raised out of engagement with the ratchet by a cam and lever, and the carriage is returned to its starting position by a spring- operated shaft and a chain 4S. The duration of the winding is regulated by the pull of the chain 4S, which causes an adjustible stop 5E on a sliding and rocking rod 5A, Fig. 8, to be brought opposite a stop 5F on the end of the traverse bar 2N, the longitudinal movement of the rod 5A causing the release of a catch 5S, Fig. 7, which normally holds the spindle-driving clutch in gear. The spring levers of the clutches for driving the spindle-driving and cam shafts are so connected with one another and with the changing-cam that the spindle-driving clutch can be pushed into gear by the changing-cam, when the cam shaft is working, and subsequently released by an adjustable stud or tappet 6V on the cam shaft M, Fig. 7, operating the lever 5R. The guide-rods 3D are gradually rotated during the winding operation, so as to lift the threadguides as the bobbins fill, the chain 48 being caused to operate an adjustable lever connected with a bar 7A, which is thereby moved longitudinally against the action of a weight. At the end of the winding operation, the guides are lifted above the spools by reason of the bar 7A being given a sudden longitudinal movement by means of a cam, lever, and chain. The bobbins are nicked, and the threads are drawn into the nicks by semicircular and barbed knives 7T, Fig. 15, mounted on a shaft which is turned twice through a half revolution with a pause between. When the spindle-driving clutch is disengaged, a brake is simultaneously applied to the spindle-driving shaft by means of mechanism comprising a flanged disc 7M, Fig. 4, with gaps in the flanges on the continuously-driven shaft, and a disc 7N with laterally-projecting rollers, on the intermittently-driven shaft. Normally a roller engages beneath the flange until a gap is reached, when a tooth 70 on the flanged disc causes the roller-carrying disc to be partially rotated, so as to bring the adjacent roller beneath the flange of the disc. The thread hooks 7Z, Fig. 9, are mounted on and operated by the longitudinally - operated bars 7Y, 7X, and carry each a spring for holding the end of the thread. When the knives have made a half revolution. and the guides 1T have been drawn backwards by a cam and lever 8S, Fig. 7, the threads are drawn by the hooks behind the barbs on the knives, and the knives complete the second half of their motion and draw the threads into the nicks. The threads are then severed by a set of knives 8C on the longitudinal bar 8B, and the spools are doffed as above described, the springs on the hooks 7Z holding the threads opposite the back spindles, where they are nipped and held by the empty spools. The starting-end of thread between the spool flange and the spindle end is severed by cutters 8R, Fig. 15, which are drawn inwards by chains and a rocking shaft 8P, and are shot outwards against the bobbin flanges by springs. When the spools are doffed, they drop into alternate notches or troughs formed in an endless band 9C, Fig. 6, the remaining notches containing the empty spools. The latter are received from an adjustable hopper 9D, the pile of bobbins in the hopper being normally held therein by a spring lever 9E, until the latter is released by a trigger lever 9M operated by a rocking shaft 9U, which carries pawl levers 9K, 9N for moving the band longitudinally. In a modification, studs on the moving band are caused to operate a spring escapement mechanism whereby a spool is allowed to drop into every alternate trough of the band. The frame carrying the endless band is raised to the level of the spindles, and receives the full bobbins. It is then lowered, and, when it has reached its lowest position, a cam on the cam shaft operates a lever 10Y and pawl 10Z, whereby the band is moved forwards a distance equal to half the pitch of the spindles, so as to bring the empty bobbins in the notched band opposite the spindles for re-starting. The band frame is then once more raised for the application of the empty bobbins to the spindles. To prevent the thread-guides from bearing too heavily upon the thread should an irregularity occur in the latter &c., the front portion 11F thereof, Fig. 9, is pivoted to the main portion 11G, and is held in position by an adjustable spring, the parts being so arranged that the guide 11F may be thrown back out of contact with the spool when required. The thread passes to the spool through a tension arrangement consisting of a spring disc pressing against a cylindrical rod, which may be rotated by hand for the removal of fluff &c.