Machine for lasting side portions of shoe uppers
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 19, 1994
Grant Date -
N/A
app pub date -
Apr 23, 1992
filing date -
Apr 30, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A side (or heel seat and side) lasting machine comprises two lasting rollers (232; 232') arranged one at either side of a shoe support (20) by which a shoe is supported bottom up. Each roller (232; 232') has a helical rib arrangement (294) which, when rotated while in pressing engagement with the shoe bottom, effects an inwiping movement on the lasting marginal portions of the shoe upper. The rollers (232; 232') are inclined to the longitudinal center line of the shoe support, with their free ends directed heelwardly; the acute angle subtended between each center line and the roller axis of rotation is in the order of 50.degree. to 62.degree., preferably 57.degree.. The lasting rollers (232; 232') are of non-metallic material, preferably synthetic polymer or ceramic material, and have a single helical rib the pitch of which is in the range of 10 to 15 mm.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully