Patent GB-353017-A (GB)
Title: Improvements in or relating to apparatus for use in the breasting of heels
IPC: A43D87/00
Filed: 1930-04-17
Abstract: 353,017. Boots &c. UNITED SHOE MACHINERY CORPORATION, 140, Federal Street, Boston, U.S.A.-(Assignees of Ashworth, F. ; Wenham, Massachusetts, U.S.A.) April 17, 1930, No. 12142. Convention date, May 1, 1929. [Class 17 (i).] Breasting.-For breasting at other than a right-angle to the tread, means connect a breasting knife and a heel support adapted to cause during relative approach of these members a relative movement longitudinally of the heel. As applied to the combined compressing and breasting machine described in Specification 285,134, [Class 17 (i), Boots and shoes, Apparatus for making &c.], the frame of the machine carries brackets 44 to which are pivoted the lower ends of links 38 restraining a breasting knife carrier 32 from upward movement. The carrier is guided on rods 100 which can be adjusted at the required breasting cut angle, the lower ends of the rods being each secured to blocks 102 adjustable about convex blocks 104, a friction clamp 108 and positive adjustable stops 118 being provided. This mechanism is carried by the rising and falling crosshead 16 described in the prior Specification. A screw 98 in the carrier 32 forms an adjustable abutment for the breasting knife 96. Behind the knife is a presser foot 30 engaged by a brake 34 so that it can rise as the heel is approached to the knife. The foot 30 is hollow, and houses a rod 28 threaded for vertical adjustment through a block 54, rotation of the rod also effecting vertical adjustment of the foot 30, a sleeve 48, Fig. 5, engaging the foot by a screw-thread and the rod by a flat. The brake 34 is formed to prevent the foot 30 from rotating. A pin 57 fixed in the block 54 engages a slot in the end of a lever 58 urged downwardly by a spring and pivoted to a cross member 62 carried by the upper ends of the rods 100. A pin 64 on the lever 58 engages a slot in the end of one arm of a bell-crank lever pivoted at 68, the other arm of the lever carrying a cam roll 74 co-operating with a plate 76 freely movable upwardly through a bracket extending from the carrier 32, its lowest position being determined by adjusting nuts 80. As the crosahead 16 moves downward, and the feed chains 18 carry the heel to the support 20, as described in the parent Specification, the roll 74 rides down the edge of the plate 76, snapping under its lower edge before the chains separate to release the heel. This movement of the bell-crank lever depresses the rod 28 to hold the heel, and the crosshead commences to rise. The member 62 moves upwardly with the crosshead and the cam roll 74 lifts the plate 76 until the roll engages a cam 90 secured to the carrier 32, this cam releasing the plate 76 and raising the rod 28. The striker 24 then positions the heel against back gauges. The still rising heel engages, first, the foot 30 and then the knife, the rods 100 moving the knife carrier longitudinally of the heel as the heel is forced upwards. The top of the breast edge of the heel support 20 is substantially in line with the knife and in the axis of the blocks 104, so that a shearing cut is made at any desired angle. On the descent of the crosshead the presser foot 30 is depressed to starting position by the cross member 62, which engages the upper end of the sleeve 48.