Patent GB-191402433-A (GB)
Title: Improvements in Hat Paring Machines.
Inventor: MELLERSH-JACKSON WILLIAM JOHN
IPC: A42C1/06
Filed: 1914-01-29
Granted: 1915-01-07
Abstract: 2433. Jackson, W. J. Mellersh-, [Turner, A.]. Jan. 29. Trimming and paring. - In paring-machines in which the hat is mounted on a shaft which moves toward and away from a rotary cutter, the cutter revolves in the same direction as the hat so as to cause the outside of the brim to keep in contact with a guiding-rod. The hat 21, Fig. 1, is supported by an expansion holder 24 on a spindle 23, driven from a shaft 12 by bevel-gearing 13, 25 and a universal joint 27, a band brake 110 abutting against the frame 115 being applied to take up back-lash of the joint 27. The hat is caused to bear against a rod 30 by means of a movable weight 100 on a rod 101 adjustable on a rock-shaft 102 fitted with a second arm 105. This arm carries a roller 106 bearing against an oval plate 32, fixed on the shaft 23 so that its major axis is at right-angles to that of the hat. To facilitate mounting a hat, the shaft 23 may be fixed in its outermost position by a spring pin 214 adapted to enter a cavity in a block loose on the shaft. The rotary cutter 148, Figs. 1 and 2, protected by a shield 163, is supported by arms 144, 145 from an upright 136 adapted to slide vertically in a cross-head 44 movable horizontally toward and away from the hat. This movement is produced by a lever 48 pivoted at 49 and sliding through blocks 50, 55 pivoted respectively to a slide 51 and to a support 56 adjustable in height. The slide is fitted at the bottom with a cam-roll 134, which may be changed for one of another shape, adapted to be pressed against a cam 128 on the shaft 12 by a spring 129 between a pin 130 on the cam and a pin 131 on the slide. A stop 215 may be adjusted on the slide 51 to contact with the lower guide 52, so that the cam in its lowest position shall leave the roll. The upright 136 is reciprocated from an eccentric 141 on the shaft 12 by a rod 139, bent at 138 to pass through an extension 137 and secured to the eccentric rod 143 by a set-screw 142. The rod 30 slides in a tube 116, Fig. 8, mounted in a block 117 adapted to be moved along guides 118 by a lever 119 pivoted at 120 and having a slot 121 embracing a stud 122; a spring 123 adjustable by a nut 125 serves to keep the lever 119 in any position. In order to support the brim at the front and back, a sleeve 160 is adjustably fixed on the tube 116 by means of a set-screw 161. An arm 157, Figs. 1 and 2, on the rod 30 is connected to a block 159 on the arm 145 by a link 158, so that the rod moves vertically with the cutter, but at a greater rate owing to the oscillation of the cross-head 44 and the inclination of the link 158. A finger 152 passing through the rod 30 bears on the edge of the brim and is formed with a block 153 to slide on a rod 154 fixed on the arm 145. The cutter is driven by a belt passing over the pulley 166 and over idle pulleys to a driving-pulley 167, Figs. 1 and 3, on the main shaft 168. Connected to this shaft by a universal joint 170 is a shaft 171 having a bearing 174 attached to a plunger 178, provided with a spring 180 which tends to lift the shaft 171, so that the worm 172 on it is brought out of engagement with its worm-wheel 173 on the shaft 12. The shaft 168, and therefore the cutter, runs continuously; but in order to start the shaft 12 to revolve the hat and reciprocate the cutter &c., the plunger 178 is depressed by means of a lever 194 on an arm 196 pivoted at 195. A lug 182 adjustable on the plunger 178 then engages a shoulder 183 on a lever 184, pivoted at 185 and tending to take up the position shown in full lines in Fig. 3, owing to the weight 186. As the shaft 12 revolves, an arm 191 on it engages a projection 188 on the lever 184, moving this lever to the position shown in dotted lines, so that, on the next revolution, the arm 191 encounters the projection 189, thereby swinging the shoulder 183 out of engagement with the lug 182 and allowing the worm 172 to come out of mesh with the worm-wheel 173. The belt x, Fig. 10, which drives the cutter passes over a jockey-pulley 200 supported from a disk 202 loose on the shaft 168. The belt is kept taut by a weight 204 on an arm 203 also fixed in the disk 202 and shaped so that a portion is normally horizontal as shown. Resting on this portion is a rod 206, Figs. 3 and 10, fixed to a rock-shaft 208, which also carries an angularly adjustable arm 210. Should the belt break, the arm 203 swings downwards, allowing the rod 206 to swing under the action of a weight 207, the impact of the arm 210 against the lever 184 causing disengagement of the lug 182 and shoulder 183, thus stopping the shaft 12. In order to counteract lateral strain by the belt x on the pulley 166, a rod 150 is carried by the cross-head 44 and bears against a grooved roller 151 loose on the arm 144.