Broad sheet is a type of hand-blown glass. It is made by blowing molten glass into an elongated balloon shape with a blowpipe. Then, while the glass is still hot, the ends are cut off and the resulting cylinder is split with shears and flattened on an iron plate. (This is the forerunner of the cylinder process). The quality of broad sheet glass is not good, with many imperfections. Due to the relatively small sizes blown, broad sheet was typically made into leadlights. This article refers to the material. ... sculpting hot blown glass A glass pipe made by lampworking Hand-blown glass beads and pendants Glassblowing is the process of forming glass into useful shapes while the glass is in a molten, semi-liquid state. ...
Other methods for making hand-blown glass included blown plate, crown glass, polished plate and cylinder blown sheet. These methods of manufacture lasted at least until the end of the 19th Century. The early 20th century marks the move away from hand-blown to machine manufactured glass such as rolled plate, machine drawn cylinder sheet, flat drawn sheet, single and twin ground polished plate and float glass. Blown plate is one of many types of hand-blown glass. ... Float glass is made by melting raw materilas consisting of sand, limestone, soda ash, dolomite, iron oxide and salt cake. ...
According to the website of the London Crown Glass Company[1], broad sheet glass was first made in the UK in Sussex in 1226 C.E. This glass was of poor quality and fairly opaque. Manufacture slowly decreased and ceased by the early 16th Century. French glassmakers and others were making broad sheet glass earlier than this. Sussex is a traditional county in south-eastern England, corresponding roughly in area to the ancient Kingdom of Sussex. ...
Sources
^ Hand-blown glass: manufacturing process. London Crown Glass Company. URL accessed on December 30, 2005.
The glass sheet of claim 7 wherein one end of the stub is connected by a connecting wire to the central part of one of the conductor wires forming the first means, and the other end is connected by a connecting wire to the central part of the conductor wire forming the second means.
The glass sheet of claim 11 wherein the distance between the conductor wires forming the stub is 2 to 50 mm, and the length of each of the conductor wires in the pair is 200 to 600 mm.
The glass sheet of claim 15 wherein one end of the stub is connected by a connecting wire to the central part of one of the conductor wires forming the first means, and the other end is connected by a connecting wire to the central part of the conductor wire forming the second means.
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