Standard glass is an essential part of the total aesthetic and character of historic structures, however is frequently maligned for its perceived imperfections. Thankfully, conventional glass is being protected and protected a growing number of; allowing it to be delighted in for years to come.
How do you understand if you have historical glass in your residential or commercial property? We take a look on top five different varieties of traditional glass and how you can recognise it in your own home.
1. Cylinder Glass
Cylinder glass was built by blowing a cylinder of molten glass, which was then cut at the ends and along the side prior to being flattened out in a heating system. It is also called “broad”, “sheet” or “muff” glass and was popular until the mid 1700s.
Cylinder glass can be identified by its somewhat rippled surface (which the ripples normally running in the very same instructions). This is generally accompanied by a pattern of long air bubbles that depend on straight, parallel lines.
2. Crown Glass
Crown glass is made by blowing and after that spinning molten glass into a large thin disc referred to as a table. This large thing disc would then be cut into smaller panes. Crown glass is often slightly curved with unique semi-circular lines called the ream. It is thinner, brighter and shinier than cylinder glass. It tends to have a noticeable pattern of concentric circles, and may have a small thick circle of glass or “bullseye” from the centre of the table.
3. Plate Glass
To make early plate glass, thick cylinder glass or cast glass was ground down to make it flat and then the surface polished until smooth. Plate glass was extremely pricey as a result of this labour-intensive process. It was utilised, from the late 1600s onwards, mainly for mirrors and to glaze high status structures.
4. Patent plate glass
James Chance created the procedure for making ‘patent plate’ glass in 1839. This process made it possible to grind and polish thinner sheets of glass than the traditional plate glass technique allowed. Manufacturers could then make more finished glass from the exact same amount of basic materials.
5. Drawn flat sheet
Glass production became more mechanised from the early 1900s. Various techniques were invented to allow a continuous sheet of glass to be extracted of a heater of molten glass. Each sheet was passed through a series of rollers and cooled, and then mechanically ground and polished.
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