Apparatus to close, stretch and nail the flanks of a shoe vamp t

Details Apparatus to close, stretch and nail the flanks of a shoe vamp t Apparatus to close, stretch and nail the flanks of a shoe vamp t

1991-03-27

1992-10-13

Meyers, Steven N.

Boot and shoe making

Lasting machines

Wiper folder

12 131, A43D 2114, A43D 7500

Patent

active

051539616

ABSTRACT:
Acting on a column means (3) carrying a shoe (4) being worked is a fluid-operated actuator (19) longitudinally moving the shoe (4) in synchronism with two nailing hammers (37) acting on the opposite shoe flanks. Each hammer (37) is carried by an end plate (39) oscillatably mounted to a movable block (36) along a guide structure (33) for pushing the hammer (37) towards the shoe (4). The lower hammer end (37a) is elastically urged towards the edge of the shoe vamp (5) in order to stretch it when the hammer moves towards the shoe inside before the nail is driven in. The guide structure (33) is capable of oscillation about its own longitudinal axis and acts on the shoe insole (6) in order to transmit to the hammers (37) the variations in height and inclination encountered along the longitudinal shoe.

REFERENCES:
patent: 2660740 (1953-12-01), Robinson
patent: 2754529 (1956-07-01), Robinson
patent: 3146474 (1964-09-01), Choice
patent: 4630325 (1986-12-01), Bender et al.
patent: 4853997 (1989-08-01), Giebel
patent: 4999870 (1991-03-01), Jung

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