Apparatuses for producing plate glasses

An apparatus for producing a plate glass which comprises

• (A) a melter for storing a molten glass material,
• (B) a molding portion for molding the molten glass from the melter into a plate,
• (C) a temperature adjusting tank located between the melter and the molding portion for maintaining the molten glass material from the melter at a uniform temperature, said temperature adjusting tank having a glass material channel for introducing the molten glass material maintained at the uniform temperature into the molding portion in a position facing on the molding portion,
• (D) a tweel for adjusting a flow rate of the glass material which is raisable and lowerable in the glass material channel and has a hole through which a surface layer stream of the molten glass material can be separated and passed in the glass material channel, and
• (E) a guide portion for introducing the surface layer stream from the hole of the flow rate adjusting tweel into both sides of the glass material channel, said guide portion being located downstream of the flow rate adjusting tweel within the glass material channel.

An apparatus for producing a plate glass which comprises

• (A) a melter for storing a molten glass material,
• (B) a molding portion for molding the molten glass material from the melter into a plate,
• (C) a temperature adjusting tank located between the melter and the molding portion for maintaining the molten glass material from the melter at a uniform temperature, said temperature adjusting tank having a glass material channel for introducing the molten glass material maintained at the uniform temperature into the molding portion in a position facing on the molding portion, and
• (D) a tweel for adjusting a flow rate of the glass material which is raisable and lowerable in the glass material channel and has a hole through which a surface layer stream of the molten glass material can be separated and passed in the glass material channel,
• (E) a guide portion for introducing the surface layer stream from the hole of the flow rate adjusting tweel into both sides of the glass material channel, said guide portion being located downstream of the flow rate adjusting tweel within the glass material channel, and
• (F) a member for controlling the surface layer stream which is raisable and lowerable upstream of the flow rate adjusting tweel within the glass material channel, controls the surface layer stream of the glass material and leads it to the hole of the flow rate adjusting tweel.