A - Human Necessities – 43 – B
Patent
A - Human Necessities
43
B
36/85
A43B 13/00 (2006.01) A43B 13/39 (2006.01)
Patent
CA 2011870
ABSTRACT OF THE DISCLOSURE: Lasting insole for welted shoes and a method and a form for production of the same. The lasting insole comprises supporting layer and a rib which is shaped from elastomeric material and pressed to the supporting layer. The invention brings also an improvement of the construction of a form for injecting plastic material and forming the rib onto the supporting layer of the lasting insole for welted shoes. The form comprises die part with inserting cavity for laying-in the supporting layer and punch part with rib shaping cavity. The insole construction is carried out as follows. Along both sides of the rib anchrage grooves are made in the supporting layer. Connection film is applied between the supporting layer and the rib, this connecting film being spread up to walls of the anchorage grooves. The improvement in form construction is reached as follows. On the punch part, along both sides of the rib shaping cavity, there are made circumferential projections which interfere with inserting cavity of the die part.
Boltnar Vincenc
Habrovansky Josef
Korvas Albin
Rybka Jiri
Svajda Jindrich
Boltnar Vincenc
Habrovansky Josef
Korvas Albin
Obuvnicky Prumysl Svit Statni Podnik
Robic
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