Safety lock for forming machine blowhead

Details Safety lock for forming machine blowhead Safety lock for forming machine blowhead

1975-11-21

1977-01-25

Bashore, S. Leon

Glass manufacturing

With apparatus safety means

65261, 65266, 65300, 65357, 248407, 248408, 248412, 403324, C03B 914

Patent

active

040049051

ABSTRACT:
An apparatus for forming glass containers wherein the glass is expanded to its final shape in a blow mold. A blowhead is brought onto vertical registry with the blow mold cavity. In the conventional Hartford I.S. forming machine, the mechanism for moving the blowhead onto and out of registry with the blow mold is pneumatically operated. The blowhead and the arm that supports the blowhead or blowheads is of considerable mass, and when an operator is required to change blow molds, or in some instances repair mechanisms which are at the blow mold location, it is necessary to maintain the blowhead in its up position. Air lockout systems have been used in the past but have not been foolproof. Accidents may occur. The present invention utilizes a mechanical lockout arrangement which locks the piston rod in its elevated position to avoid any possibility of the blowhead dropping.

REFERENCES:
patent: 1832080 (1931-11-01), Allen
patent: 2842387 (1958-07-01), Della-Porta
patent: 3383193 (1968-05-01), Bailey
patent: 3506234 (1970-04-01), Roder et al.
patent: 3642088 (1972-02-01), Smith
patent: 3770236 (1973-11-01), Marsh et al.

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