Plastic and nonmetallic article shaping or treating: processes – With severing – removing material from preform mechanically,... – Dividing work to form plural articles
Patent
1974-12-04
1977-09-27
Pavelko, Thomas P.
Plastic and nonmetallic article shaping or treating: processes
With severing, removing material from preform mechanically,...
Dividing work to form plural articles
29452, 264228, 264251, 264297, 425111, B28B 2304
Patent
active
040512169
ABSTRACT:
A method of moulding concrete ties or other similar articles having pre-stressed reinforcing wires or rods therein, wherein a series of open ended multi-cavity moulds of similar cross-sectional shape are aligned end to end in groups, wires are positioned in the aligned cavities of the moulds and are tensioned, the wires are separated from one another and into horizontal rows in each group by flat sided bar like spacers which are interposed between the ends of adjacent moulds of that group, while the groups themselves are separated by vertically movable spacer plates each having vertically extended slots which arrange the wires into vertical rows. The wet mix of concrete is then discharged into the moulds to surround the reinforcing wires, and after initial set of the concrete the flat sided bar like spacers are withdrawn laterally while the vertically slotted spacer plates are depressed downwardly, and the wires thus exposed between the adjacent moulds and also between the adjacent groups are severed by a driven cutter disc of abrasive material.
REFERENCES:
patent: 3070867 (1963-01-01), Belle
patent: 3157721 (1964-11-01), Barish
patent: 3186679 (1965-01-01), Williams
patent: 3608163 (1971-09-01), Harford
Concrete Industries (Monier) Limited
Pavelko Thomas P.
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