Kabushiki Kaisha Ohara Kogaku Garasu Seizosho

Yoshio Ishii

Fukushichi Fukuzaki

Masaki Fukuzawa

According to the first method according to the present invention, there is provided a method for manufacturing glass products by casting low viscosity glass into a mould while controlling free flow of the glass by storing and holding the glass continuously fed out of a feeder outlet in a region under the lower surface of a control member provided below the feeder outlet after a cutting step, whereby the operation for setting a next mould to receive the glass in position is facilitated, the shape of the flowing glass after cutting is made stable and homogeneous gob can be produced. According to the second method of the invention, glass products are manufactured by casting the glass into a mould while controlling the free flow of the glass continuously fed out of the feeder outlet by storing and holding the glass not only in a region under the lower surface of the control member but also in a region above the upper surface of the control member by raising and lowering the control member whereby the glass flow is controlled over a wider range of glass flowing speed. The above described two methods of the present invention are applicable not only to production of a gob for an optical glass but effectively to processes for forming boards, bars etc. respectively having certain dimensions and configurations after cutting off low viscosity glass fed continuously out of a feeder.

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Sagamihara, Japan

Yoshio Ishii