Patent GB-191020743-A (GB)
Title: Improvements in or relating to Heel Breasting Machines.
Inventor: PLANT THOMAS GUSTAVE
IPC: A43D87/00
Filed: 1910-09-06
Granted: 1911-09-06
Abstract: 20,743. Plant, T. G. Sept. 6. Breasting. - A machine for breasting heels comprises detail improvements on machines of the type described in Specification 4229/08, and includes a single-revolution driving-clutch, which may be of the type described in Specification 17,191/09, [Class 89(iii), Nailing &c.]. The last carrying the shoe is supported on a pin 18, Fig. 2, projecting from a sliding block 17 carried by a spring-pressed post 16, which is adjustable by means of a segmental wedge 19 in the upper end of a pivoted arm 10, Fig. 1. This is provided with a stop 14 adapted to contact with a spring plunger 15 to locate the work in breasting position. In this position, the heel is clamped by a plate or gauge 40 Fig. 8, removably carried by a presser-foot 34, which is pivotally connected by links 31 to an adjustable slide 30; an indicator 205, 206, Fig. 5, enables the height of this slide to be set according to the size of the heel. The plate 40, Fig. 8, is shaped to the contour it is desired to give the heel breast, and its angular position is adjusted by means of a screw 36 and indicator 41, 42. The slide 30 is connected by a series of adjustable yielding connexions to a treadle, which, when partly depressed, causes the plate 40 to be lowered on to the heel with a light pressure. Further depression of the treadle starts the main shaft, which causes cam-operated means to act yieldingly on these connexions so as to force the plate 40 against the heel with a strong clamping - pressure. While the heel is held by the plate under a light pressure, the shoe and its support may be finally adjusted; when the heavy pressure is applied, however, a rod 85, Fig. 1, actuated by adjustable connexions from a shaft 88, releases a spring- pressed bolt housed in a casing carried by a bracket 74 so that it is forced into locking engagement with teeth 72 on a bracket 71<*> projecting from the arm 10. The breasting-knife 107 is mounted in cut-away guides 106, Fig. 5, in a slide 92, which is connected by lugs 93 to a rod 94 yieldingly-operated by an eccentric on the main shaft 5, Fig. 1. The knife has secured to it a threaded rod 109, Fig. 8, carrying an adjustable nut or holder 110, which is sustained by a pivoted forked arm 113 against a bifurcated stop 111 on the slide 92; by turning the arm 113 outwards from under the holder 110, the knife and rod 109 can be moved downwards in the guides 106 and then detached from the slide 92. To arrest the cutting movement of the knife, the front of the slide has mounted on it a carrier 115 for a stop 116, adjusted by means of a spiral nut 120 and indicator 203, Fig. 5. This stop is adapted to contact with an abutment 124, removably and pivotally connected to a sliding carrier 123 actuated through yielding connexions 129, 130, 143, 132 from a cam on the main shaft 5; the abutment 124 has an extended bearing-foot to prevent marking the work. After the abutment contacts with the shoe, it is sustained independently of the shoe by a wedge 146, Fig. 8, adapted to coact with a shoulder 147 on the carrier 123. The wedge is actuated by a spring 152, Fig. 5, acting through the connexions 151, 149, 154, 155, which are released to permit the spring to act by a cam surface 156 on the slide 92; a second cam surface 164 releases an arm 161 to permit a spring 166 to move the arm so that its forked end 160 engages a flanged portion 159 of the wedge, and locks the wedge in operative position. After the breasting operation, the chips or pieces of leather, which pass through an opening in the abutment 124, are swept away from the shoe shank by a piece of coiled wire 171 secured to a pivoted arm 170, which is operated at the proper time from the rod 132 through the connexions shown; a guard 197, Fig. 8, preferably of leather, is provided to prevent chips from flying through the opening in the abutment 124; this guard is mounted independently of the abutment