Patent GB-191217207-A (GB)
Title: Button Feeding Mechanism.
Inventor: BARRON WILLIAM LUTHER
IPC: A41H37/10
Filed: 1912-07-24
Granted: 1913-05-15
Abstract: 17,207. Barron, W. L. July 31, 1911, [Convention date]. Button-attaching machines. - In button-feeding mechanism of the type described in Specifications 30,183/97 and 3102/00 the button-head guideway leads from the button-hopper to a position adjacent to the fastening-devices, and the button-feeder, which moves parallel with the adjacent wall of the guideway, comprises two button-engaging jaws, one of which can yield transversely of the operative face of the guideway. The cylindrical button-hopper 49, Figs. 1 and 10, is provided in its base 48 with a button shank slot 51 beginning at a point 51<Î> near the aperture 50 and ending in a branch 52 leading through the aperture 50. Brushes 57 on a block 56 are rotated by a worm 59 and wormwheel 58 from the main shaft 4 and circulate the buttons until their shanks drop into the slot 51. A cap-plate 63 extends through the aperture 50 and is bent in the hopper to form a shield plate 64 spaced above the bottom of the hopper slightly more than the thickness of a button-head. The inner face of the cap-plate 63 is formed with a shank-end clearance groove 65. The button-guideway comprises an inclined bar 66 and has a longitudinal slot for the button shank registering at its upper end with the branch slot 52 and at the lower end with the slightly flaring mouth of the button-shank guideway 40 of the presser-foot. A cover-plate 70 is provided over the bar 66 to which it is secured by stud screws 72 with an interposed spring 74 and is spaced therefrom and has a shallow groove continuous with the groove 65 of the cap-plate 63. The button-feeding mechanism comprises a rock-shaft 75, Figs. 1, 3, and 4, provided with a wing 77 carrying a depending rigid arm 79 which has a lateral extension 80 extending beneath the button-guideway and adapted to push the button into stitching position. The rock-shaft 75 is actuated to feed a button by a thrust-rod 85, Fig. 1, operated by a swinging-lever 86 provided with a stud 88 which engages a cam-groove 89 on a cylinder 17 on the main shaft 4. An interposed spring 92 between the swinging-lever 86 and the rod 85 allow yielding when the feeding-mechanism is abnormally obstructed. An auxiliary buttonhead engaging-jaw 97, Fig. 3, co-operates with the piece 80 to hold the button in stitching position and swings at right-angles to it on a stud 94 fixed in the arm 79, the auxiliary jaw being controlled by a spring 100 and having a bent portion 101 engaging a roller 104 on a fixed stud 103. The roller 104 causes the auxiliary jaw to move out of button-engaging position against the action of the spring 100 when the piece 80 and the arm 79 are moved out of button-engaging position. Two spring arms 105, Fig. 4, hold the button at the lowest part of the button-guideway. A depending lip 42, Fig. 5, on the presser-foot bends the fabric sharply over the edge of the throat-plate projection 32, Fig. 3, and the button shank is held between the jaw 80, Fig. 5, and the auxiliary jaw 97 with the shank resting on the stop shoulder 43 of the presser-foot,