Plastic article or earthenware shaping or treating: apparatus – Building forms or construction engineering type mold with...
Patent
1980-04-08
1983-02-01
Derrington, James H.
Plastic article or earthenware shaping or treating: apparatus
Building forms or construction engineering type mold with...
249 20, 249154, 249155, 264 32, 264 33, E04B 284
Patent
active
043713254
ABSTRACT:
A method and apparatus for forming a structure having an inner surface in the form of at least one segment of a sphere. An inner support is mounted at a fixed point from which a radius can be struck to define the inner surface of the structure. An elongated radial member is pivotally connected at one end to the inner support with its other end being movable vertically and horizontally. A forming member at the other end of the elongated member has an outer surface in the shape of the inner surface of the segment to be formed. An actuator moves the elongated member horizontally and vertically to selected positions to place the outer surface of the forming member opposite and adjacent the inner surface of each segment being formed. A forming material is applied to the outer surface of the forming member while it is opposite and adjacent the inner surface of the segment being formed to form each segment directly on the forming member.
REFERENCES:
patent: 2837910 (1958-06-01), Steed
patent: 3298155 (1967-01-01), Byfield et al.
patent: 3365855 (1968-01-01), Vermette
patent: 3590448 (1971-07-01), Bryant
patent: 3735546 (1973-05-01), Newman
patent: 4320075 (1982-03-01), Nielson
Derrington James H.
Thompson Jr. Woodford R.
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