Boot and shoe making – Lasting machines – Nipper stretcher
Patent
1979-06-15
1981-05-12
Lawson, Patrick D.
Boot and shoe making
Lasting machines
Nipper stretcher
12 145, A43D 2100, A43D 2300
Patent
active
042663113
ABSTRACT:
A shoe lasting machine having a receiving device for a last, a heel band for holding a shoe upper on the last, a first wiper for shearing a heel portion of the shoe upper, a second wiper for wiping a side portion of the shoe upper, and a pincer disposed between the first and second wiper for gripping an edge portion of the upper, wherein the pincer moves over the last in a direction away from the last so that a pull directed away from the last is exerted on the edge portion to avoid forming a pocket in the upper. The pincer includes a pincer part articulated on a pincer base body for gripping the edge portion, wherein the pulling force for each individual pincher part and pincer base body is adjustable. The time point of the pincer opening is adjustable with respect to the movement of the wipers and the heel band. Preferably, the receiving device is arranged to receive the last in an upward-directed position, whereby the pincer is moved upwardly away from the last.
REFERENCES:
patent: 3096531 (1963-07-01), Rockwell
patent: 3273183 (1966-09-01), Schindler
patent: 3506992 (1970-04-01), Kamborian
patent: 3685072 (1972-08-01), Schindler et al.
Lawson Patrick D.
Schon & Cie GmbH Maschinenfabrik
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