Adjustable core forms
First Claim
1. An adjustable molding form assembly comprising axially elongated male and female form elements made from severable plastic material, each of said elements comprising a generally cylindrical thin-walled shell of uniform wall thickness and including a side wall defining internal and external screw-threads extending the entire axial length thereof and defining the major radial extent thereof, said male element having at least one end wall providing a substantial closure for at least one end thereof, said female element having one end wall and being open at its other end, the end walls of said elements having coaxially aligned central openings therethrough, said male element being received within said other end of said female element in threadable engagement with said female element.
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Abstract
An adjustable molding form comprises axially elongated male and female form elements made from severable plastic material. Each element has a thin-walled shell of uniform wall thickness which defines internal and external helical screw threads. The female form element has one end wall and is open at its opposite end, whereas the male form element has a pair of end walls and is threaded into the open end of the female form element. Coaxially aligned central openings in the end walls of the form elements cooperate with a rod or bolt member which extends therethrough to support the molding form at axially spaced intervals on the member.
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Citations
6 Claims
- 1. An adjustable molding form assembly comprising axially elongated male and female form elements made from severable plastic material, each of said elements comprising a generally cylindrical thin-walled shell of uniform wall thickness and including a side wall defining internal and external screw-threads extending the entire axial length thereof and defining the major radial extent thereof, said male element having at least one end wall providing a substantial closure for at least one end thereof, said female element having one end wall and being open at its other end, the end walls of said elements having coaxially aligned central openings therethrough, said male element being received within said other end of said female element in threadable engagement with said female element.
Specification