Patent GB-190416405-A (GB)
Title: Hat Paring Machine.
Inventor: STERLING CHARLES ISAAC
Filed: 1904-07-25
Granted: 1904-10-13
Abstract: 16,405. Sterling, C. I. July 27, A.D. 1903, [date applied for under Patents Act, A.D. 1901]. Felt hats; brims. -In a machine for trimming, planing, or paring the brims of f curled hats, means are provided whereby the surplus stock is removed by a rotating cutter as the hat body . makes two revolutions ; the bulk of the stock is removed during the first revolution, and the edge is finished during the second. The machine can be adjusted for different sizes and styles of hat bodies. Fig. 1 is a side elevation of the machine, the parts being in the position shown at the commencement of the operation. The hat body 21 is mounted on a holder 22, which is attached to, and receives rotary motion and simultaneous vertical reciprocatory motion from, a shaft 23. At the upper end of the shaft 23 is an oval pattern plate 24, on the lower side of which are rollers 27 adapted to travel on a cam-plate 28 fixed to the framework ; the camplate comprises two high and two low portions, the high portions raising the shaft 23 so that the cutter may act on the low portions of the brim as shown in Fig. 1. The shaft 23 is driven, through open gearing, by a shaft 33 which is put into connection with a driving-pulley 35, when required, by means of a clutch 34. The clutch is operated by a treadle 44 through a rod 43 and pivoted spring- controlled lever 36. At the forward end of the lever 36 is a pin 40 adapted to engage a socket 42 in the gear-wheel 31, and so to stop the rotation of the shaft 23 at the end of the second revolution. When the treadle is depressed to start the machine, this pin is disengaged and the clutch members are engaged, means being provided to keep them in engagement until the completion of the second revolution. These means comprise a gravity catch 47, Fig. 8, and a ratchet 52, Figs. 8 and 9 ; the catch 47 holds the lever 36 in its raised position until tripped by a lug 59 on the ratchet. The ratchet is moved forwards two teeth by a lug 65 on the wheel 31 at each revolution of the wheel, and, after tripping the catch, is returned to the starting position shown in Fig. 9 by a weighted cord attached to a pin 60. The cutter 68 is carried by a sbaft 69, journalled in a bracket 70, pivoted to a slide 131 mounted in a carrier 71 which reciprocates on the bed. Mounted in pattern blocks 88, Figs. 1 and 5, in the carrier 71 is a shaft 87, carrying a wheel 85 provided with a circumferential groove adapted to engage the edge of the pattern plate 24. The pattern blocks co-operate with the pattern plate to determine the path travelled by the cutter, and they are free to slide vertically and horizontally in the carrier, but are kept in constant engagement with rollers 91 mounted in the carrier. The wheel 85 is kept in engagement with the pattern plate, and the rollers 91 in engagement with the pattern blocks, by a cord 97, Fig. 1, carrying weights 101. In this way, both vertical and horizontal movements of the wheel 85 and of the pattern blocks are produced by the pattern plate 24, and the pressure of the irregular operative faces of the pattern blocks on the rollers modifies the path of the cutter and regulates the amount of stock removed at corresponding portions of the brim. The cutter is rotated by a belt 73, and the cutter shaft is free to move longitudinally in its bearings. To keep the belt tight during reciprocation of the carrier 71, it is passed over pulleys 79 carried by spring-controlled levers 80, pivoted in a vertically-adjustable bracket. In trimming hat brims with high curls at the sides, means are provided for raising the cutter at the sides of the brim and depressing it again at the ends. A spring- controlled rod 102, adapted to raise the cutter, may be so adjusted that it is engaged by the wheel 85 when the latter moves downwards. The rod is adapted to reciprocate in guides 103. and, at its upper end, it is provided with a slotted arm 105, connected by a bolt 108 with a pivoted lever 77 attached to the cutter shaft. At the lower end of the rod 102 is an arm 109, Fig. 17, adjustably connected by a slotted plate 111 and bolts 113 with an arm 110, which carries a roller 114 adapted to engage the underside of the wheel 85. Downward movement of the wheel 85 lowers the rod 102 and so raises the cutter against the action of the spring 146, which returns the parts to their normal positions when the wheel 85 moves upwards again. Means are provided to move the cutter slightly to the right at the end of the first revolution of the machine, so as to be ready for the finishing-cut. The slide 131 is formed on its lower side with rackteeth 133 adapted to engage a pinion on a shaft 135 mounted in the carrier 71. A rod 138, depending from a sleeve on the shaft 135, is adapted to engage a pivoted lever 128 when this lever is tripped into its operative position, as shown in Fig. 10, by a sliding spring-controlled rod 140, which is pushed to the right, at the end of the first revolution nf the machine, by a lug depending from the pattern plate 24. When the lever 128 is tripped, a catch 125 is thrown up by a spring 127, and locks the lever in its operative position. During the reciprocation of the carrier, the rod 138 engages the lever 128 and so imparts a slight rotary motion to the shaft 135 so as to move the rack. When the operating-lever 36 is automatically tripped at the completion of the second revolution of the shaft 23, it operates through a system of linkwork, and a cord 124, Figs. 1 and 10, to pull down the catch 125 against the action of the spring 127, and so to allow the lever 128 to return to its normal inoperative position, and also through the same linkwork to pull down the rod 102 against the action of the spring 146, and so to raise the cutter into its inoperative position, shown in dotted lines in Fig. 1. Means are also provided for adjusting the cutter nearer to or further from the carrier, and blocking it in any required position, to adapt the machine for trimming brims of hats of the same style but of different sizes. This is effected by means of a hand-lever 148 pivoted to a bracket 149 on the carrier. A slot is formed in the hand-lever, through which passes the reduced upper end of a stud 150 extending upwards from the slide through a slot in the carrier. The hand-lever is locked to the stud by a nut 158, and, by loosening this nut, the operator can move the slide relatively to the carrier by means of the hand-lever. To facilitate the adjustment, a scale is formed on the upper plate of the carrier.