Pipe mold having insert support means

Details Pipe mold having insert support means Pipe mold having insert support means

1976-06-14

1977-10-11

Shore, Ronald J.

Static molds

Uniting preform with molding material

Including means other than mold surface to support preform

249 97, 264278, B28B 2300

Patent

active

040531341

ABSTRACT:
Concrete pipe is molded between concentric steel cylindrical shells in which there are openings on each side receiving plastic inserts defining respective keyed cavities that remain in the molded concrete pipe after curing and removal of the concentric steel shells so that large keyed eye-bolts may be inserted in the respective keyed inserts. The initial positioning of the plastic mold keyed insert is accomplished by means of a keyed plastic plunger mounted on an attaching plate which includes notches on each side to fit over attaching screws on each side of the outside steel shell. The plunger has a keyed end. The hollow plastic insert with a soft gasket around the top has a keyed plunger inserted under pressure therein for removal therefrom and replacement by the eye-bolt after the curing of the pipe is completed.

REFERENCES:
patent: 1145385 (1915-07-01), Marble
patent: 1351112 (1920-08-01), Martin
patent: 1510978 (1924-10-01), Conklin
patent: 2366401 (1945-01-01), Haskell
patent: 3712014 (1973-01-01), Waerner

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