Plastic article or earthenware shaping or treating: apparatus – Pottery wheel type support and profile – Plural profile tools of diverse configuration
Patent
1979-04-12
1981-09-01
Parrish, John
Plastic article or earthenware shaping or treating: apparatus
Pottery wheel type support and profile
Plural profile tools of diverse configuration
425266, 425267, 425268, 425405R, 425409, 425429, B28B 102
Patent
active
042869382
ABSTRACT:
An oval dish forming machine has two revolvable wheels each of which is supported on a structure permitting the wheel to move in an eccentric pattern so that discs of clay on carriers on the wheels may be formed in desirable oval shapes. One of the wheels comprises a first or spreading station where the disc of clay is subjected to a rolling extruding action of a cone-shaped roller which squeezes the clay against the carrier to form a desirable oval shape. The carrier and the initially shaped clay is then manually moved to a second or finishing station where a dumbbell shaped roller engages the clay shape on the carrier and rolls the excess clay from the shape to the desired configuration of the oval dish. The dumbbell shaped roller is stopped in the last revolution of the wheel so as to smooth the clay by a sliding action. Motion of the two shaping and finishing rollers is controlled to properly process and shape the clay so as to insure the removal of air and excess moisture therefrom. The wheels in both stations are driven simultaneously by a common driving mechanism through eccentric motion devices.
REFERENCES:
patent: 765097 (1953-12-01), GBX
patent: 2485159 (1949-10-01), Malarkey
patent: 2599910 (1952-06-01), Guthrie
patent: 2729870 (1956-01-01), Guthrie
patent: 3751206 (1973-08-01), Bradshaw et al.
patent: 3778212 (1973-12-01), Takahashi
Parrish John
Service (Engineers) Limited
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