Wheelwright machines – Rubber tire mounting and/or demounting apparatus – For collapsing or shifting tire axially
Patent
1985-04-09
1986-12-30
Smith, James G.
Wheelwright machines
Rubber tire mounting and/or demounting apparatus
For collapsing or shifting tire axially
B60C 2506
Patent
active
046321675
ABSTRACT:
In a tire changing machine, an apparatus is provided for controlling the stroke of the lower bead breaker shoe in breaking a tire bead from the bead seat of a wheel which includes a fluid motor and a pivot arm which cooperate to move the lower shoe from an initial position below and radially outwardly spaced from the wheel and tire, along a radially inward path to a position wherein the lower shoe engages the bead of a tire. A regulator assembly connected to the lower shoe prevents further radial inward, pivotal movement of the lower shoe once contact is made with the tire bead, and thereafter permits only upward movement of the lower shoe along a slight angle to the vertical so that it follows the profile of the wheel, without contacting the wheel, for completing the bead breaking operation.
REFERENCES:
patent: 2812805 (1957-11-01), Athmann
patent: 3032095 (1962-05-01), Brosene et al.
patent: 3064718 (1962-11-01), Brosene
patent: 3255800 (1966-06-01), Strang et al.
patent: 3742999 (1973-07-01), Myers, Jr.
patent: 3782442 (1974-01-01), James, Jr.
patent: 3807477 (1974-04-01), Curtis
patent: 4168733 (1979-08-01), Gwaltney
patent: 4222426 (1980-09-01), Brosene
patent: 4423761 (1984-01-01), Wood
Big Four Equipment, Inc.
Smith James G.
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