Wheelwright machines – Rubber tire mounting and/or demounting apparatus – For collapsing or shifting tire axially
Patent
1979-04-09
1981-03-17
Smith, James G.
Wheelwright machines
Rubber tire mounting and/or demounting apparatus
For collapsing or shifting tire axially
B60C 2506
Patent
active
042561620
ABSTRACT:
A tire changing apparatus for installing on and/or removing heavy duty tires of the truck type from their split rims including a vertically and horizontally extending boom rotatably mounted on an upright stand for swinging movement about a vertical axis and having a downwardly depending post for fixedly locking the boom directly above the stand. The boom has a centrally disposed air cylinder thereon with a depending piston rod carrying a cage-like circular ram. When the boom with ram and lockable post are swung arcuately away from overhead aligned position relative to the stand, a tire with split rim is horizontally positionable on a center stand pedestal and the boom is returned to its normal overhead position and relocked. Hydraulic or pneumatic actuation of the cylinder piston moves the ram downwardly against and to free the tire casing relative to its split rim permitting prying removal of the rim from the tire. Installation is effected by horizontally positioning a split rim on the pedestal and placing a tire thereabove and thereon whereupon pressure actuation of the ram forces the tire on the rim and permits air inflation of the tire. The ram cage confines the split rim and protects the operator in the event of forceful accidental dislodgement.
REFERENCES:
patent: 2418849 (1947-04-01), Polt
patent: 2893478 (1959-07-01), Crawford
patent: 3581795 (1971-06-01), Bunch
patent: 3630260 (1971-12-01), Bailey
patent: 3739831 (1973-06-01), Smith
Moore W. Britton
Smith James G.
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