Tire building apparatus with improved drum shoulder

Details Tire building apparatus with improved drum shoulder Tire building apparatus with improved drum shoulder

1978-03-24

1979-04-17

Kittle, John E.

Adhesive bonding and miscellaneous chemical manufacture

Surface bonding means and/or assembly means therefor

Tire body building type

156417, B29H 1714, B29H 1722

Patent

active

041499271

ABSTRACT:
An expandable tire building drum is provided with hinged drum shoulder segments that present, when the drum is in its expanded position, a bevelled shoulder contour for supporting the thickened portion of the tire band next to the bead. This bevelled contour results in a greater radius of curvature for the thickened tire portion that extends around the drum shoulder, which makes it easier to pass a stitcher wheel over this portion of the tire, and to achieve a more uniform layering of the tire components next to the bead of the tire. When the drum is in its retracted position, the hinged drum shoulder segments are lifted to positions wherein they provide support for the carcass plies of the tire when they are first laid across the drum segments and the bead turnover bladders.

REFERENCES:
patent: 3018518 (1962-01-01), Jefferys
patent: 3121651 (1964-02-01), Borglin et al.
patent: 3121652 (1964-02-01), Borglin et al.
patent: 3237199 (1966-02-01), Brey
patent: 3418192 (1968-12-01), Nadler
patent: 3442747 (1969-05-01), Brey
patent: 3536566 (1970-10-01), Frazier et al.
patent: 3607558 (1971-09-01), Nebout
patent: 3645826 (1972-02-01), Henley et al.
patent: 3674604 (1972-07-01), Gazuit
patent: 3795564 (1974-03-01), Mallory
patent: 3868203 (1975-02-01), Turk
patent: 4007081 (1977-02-01), Mallory
patent: 4045277 (1977-08-01), Habert et al.

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