Patent GB-190007005-A (GB)
Title: Improvements in Pulling-over Machines.
Inventor: MCFEELY RONALD FRANCIS
Filed: 1900-04-14
Granted: 1901-04-13
Abstract: 7005. McFeely, R. F. Sept. 19, A.D. 1899, [date applied for under Sec. 103 of Patents &c. Act, A.D. 1883]. Uppers; nailing. -Relates to a machine for pulling over uppers and securing them to the insole prior to lasting. The machine is provided with three pairs of grippers which pull over the upper at the toe and sides as shown in Fig. 81, the upper being then attached to the insole by one tack at the toe and two at each side. The last, with the upper on it, is placed in the machine with the insole resting on a hinged support 354, Fig. 6, and its edges between the jaws of the grippers 78 as shown in Fig. 79. The machine is then started by depressing a treadle. The grippers are first closed and are then raised to stretch the upper, the toe gripper being caused to act slightly in advance of the side ones. At the same time the hinged support 354 is swung down by a cam to push the last well into the upper and to depress it so that the wiping and nailing mechanism can be moved inwards over it. The machine has then completed a halfrevolution, and is stopped to allow of hand adjustment of the grippers to position the upper properly on the last. The machine is again started by depressing the treadle, whereupon a cam operates the bars 24, 28 to swing inwards the arms 20, 22. These arms carry automaticallyadjustable pieces 52, 56 which wipe the upper over the insole, and have projections fitting under the last to support it during the nailing operation. The nailing-mechanism is then moved inwards over the last, carrying wipers which hold the upper in place after the grippers have been released by its advance. The arms 20, 22 are then swung outwards, and the last support further depressed, to clear the wipers on the nailing-mechanism, which is then swung clear, and after it the grippers, ready for another operation. The last support and other mechanism having been brought to their initial positions, the machine is brought to rest, the main spindle having completed a revolution. The machine described acts on an inverted last, but may be modified to suit lasts in the upright position, springs being used to effect the operations now produced by gravity. Fig. 18 shows a longitudinal section of a gripper, and Fig. 17 a front view with the cover-plate 66 removed. The fixed jaw 60 is made in one with a box-like piece 62, in which moves the bar 68 and its extension 74. A block 72 supports a pair of links which carry a pin on which the movable jaw 78 is pivoted. When the gripper is depressed, the stops 124 arrest the fixed jaw at some desired point, while the continued movement of the bar 68 releases balls 110 which lock the blok 72. This block is then depressed against the spring 98 to lower and open the movable jaw. When the gripper is raised, the spring 98 lifts the block and closes the jaw 78 on to the upper. The further movement of the bar 68 by means of the wedgelike surfaces firmly closes the jaws, which are held closed by a sliding piece locked by a spring catch 88. This catch can be released by hand to enable the grippers to be manipulated by hand. Fig. 65 shows the tack-feeding mechanism. The tacks are contained in a hopper 400, which is rocked by an eccentric acting through rack-andpinion gear, and are lifted by plates 412 and dropped on to shoots leading to raceways such as 444. Any improperly-presented tacks are removed by a device 470 rocked by the spindle 460. The spindle 494 is geared to the spindle 398, and is rocked with the hopper. It also gears with a slide 490, which through spring connections actuates a slide 506. This slide operates a series of gates by which the tacks are dropped one at a time into conductors leading them to the nailing-devices. Fig. 42 shows the toe-nailing device. It swings in trunnions in the head of the machine, and has a gauge 940 to determine the distance of the tack from the edge. The tacks fall down the flexible conductor 586 into a pocket 602, formed in a pair of separable blocks held together by a spring. From this pocket they are driven by a rod 614 actuated by a bar 672. The machine is provided with starting-mechanism actuated by a treadle, and is automatically stopped on completing a half revolution, although the treadle may be held depressed. The treadle must then be allowed to rise and again depressed to start it.