Patent GB-191300328-A (GB)
Title: Improvements in Machines for the Manufacture of Hearth-rugs, Mats, Carpets, and the like.
Inventor: MEARS JOHN WALTER
IPC: D04G3/00
Filed: 1913-01-06
Granted: 1913-11-15
Abstract: 328. Mears, J. W., Davies, R., and Crawshaw, L. S. Jan. 6. [Cognate Application 15,309/13.] Tufting-machines.-Consists in improvements in machines for the manufacture of rugs &c., more especially in that type of machine described in Specification 19,612/08. A headstock f is mounted to slide on guides c of a frame a, which also carries a fixed bed c and a rising and falling bed consisting of a central blade w, and spaced angle irons z, z<1>, to which are secured irons 1, 2, all mounted on slides s. The slides s are connected by pivoted slotted levers 11 to a central slide 6 connected to a cross-rod 4 normally held down by the catch 16 of a treadle 14. The foundation fabric is led from a roller j over the tables to rollers k, l, m and is either provided with letting-off and winding-on motors, or is weighed at n. The spiked roller l then carries a ratchet o actuated by a pawl p on a lever q adapted to be actuated by hand or by link connexion to the slides s. The headstock f has guides g for blocks 32, 33 carrying the presser-foot 36 and needles 43 respectively. The presser-foot 36, Fig. 14, has three prongs, the middle one being flat and the outer ones curved upwards, and is carried on rods 37 having spring connexions 41 to projections 39 on blocks 32. The needles 43, Figs. 14 and 20, of which one or more pairs may be provided, have eyes 46 normally closed by springs 47 which acts as holders for the cloth tabs. The needles have opposite grooves 49, 50, the outer grooves 49 being longer and deeper than the grooves 50, which taper towards the eye to form a clearance for the tab in passing through the foundation. The lower portion of the eye is tapered on the inner side, and a small roller may be carried at the top to facilitate the entry of the tab. The blocks 32, 33 are actuated by pin-and-slot connexions to an operating hand-lever, or by connexion 75 to a crank 64 on the driving-shaft 63. One or a pair of racks 18, 19 is carried on the guides c, an engaging pawl 20, shown double ended to work with both racks, being reversible by movement of its pivot in the slot 78, where it is held by a pin 79. The pawl 20 is spring- pressed and carried by a spring-pressed rod 21, which is depressed to move the headstock along the rack. either by the operating hand-lever or by a cam 67. When the rod rises, the pawl slips over a tooth or the teeth of the rack and again holds the headstock. The tabs are carried on bands or chains 51, passing over pulleys or sprocket-wheels 52, 53. The bands or chains have blocks 57 between which the tabs are placed, and the spindle 55 is actuated by a pawl 58 fixed to the rod 21. The backing having been placed in position and the table raised, the headstock is drawn to the left-hand end of the machine. The first and any other tab may be placed in the needles by hand. The operating-lever is then depressed, or the shaft 63 is operated to depress the blocks 32, 33. The spring 41 allows the needles to move down after the presser has clamped the work, the needles passing through until the tabs are withdrawn from the eyes. In passage, the tabs press more or less into the grooves 49. On the raising of the lever, or further movement of the shaft. the needles and presser are withdrawn, and simultaneously, a tab is fed over the needles and is taken up by the springs 47, and the headstock is moved one step. When a row of tabs has been inserted, and before the final ascent of the needles, the treadle 14 is depressed to allow the movable table to fall, whereupon the spiked roller l is rotated to feed the backing for the next row of tabs. The pawl 20 is then reversed, if a double rack is provided, or if only a single rack, the pawl is lifted and the headstock returned.