Static molds – Forming product having joint or coupling – Lapped interfitted facing – alternating reversing identical...
Patent
1992-05-18
1993-11-09
Woo, Jay H.
Static molds
Forming product having joint or coupling
Lapped interfitted facing, alternating reversing identical...
249101, 249155, 249156, B28B 700
Patent
active
052595862
ABSTRACT:
A mold insert adapted to be inserted as a base plate in a forming apparatus for molding precast concrete modules, for the purpose of forming a sloped rabbet in the wall sills of the concrete module. The insert is shaped such that when inserted in one orientation it produces an outside edge rabbet, and when inserted in an inverted orientation produces an inside edge rabbet. It comprises an extruded-aluminum hollow main beam having a top flange, a bottom flange, side walls, and one or more supporting webs, and has a section profile which is substantially in the shape of a flattened Z-section. The beam's width dimension is chosen for close conforming fit between the inner and outer form sections. Each side wall has two C-channels having a circular curvature and adapted to receive and support resilient tubing sealing members. The width of the insert can be expanded by expansion beams having circular boss rails adapted to slide into the C-channels of the main beam. Mold inserts can be elongated by welding main beam sections together, and the ends of the beams can be mitered and welded together as necessary to produce rabbets with inside or outside corners.
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Mackey James P.
Woo Jay H.
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