Improvements introduced in the object of the patent of invention n 490,525 by: improvements introduced in the processes of manufacture by injection of heels for the footwear. (Machine-translation by Google Translate, not legally binding)

摘要

Manufacturing procedure by injection of heel coatings and formation of the corresponding sole for footwear (certificate of addition of patent n 490.525). Consists of the use of a mold constituted by two parts (4, 9) that adapt between themselves, and of which the superior carries the injection hole (8) and the bottom the automatic tightening and automatic device (14) practiced. . The bottom has an empty footprint where the head (1) made previously of wood or similar material is found, and a channel where the leather strips (2) or similar are allocated. When the mold is closed and the injection is proceeded, the strips are attached to the heel, at the same time that the sole is conformed at the top of the heel. (Machine-translation by Google Translate, not legally binding)