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of Birmingham and Glasgow.
of Glassworks, Smethwick, near Birmingham. Telephone: West Bromwich 1051. Cables: "Chance, Smethwick". (1947)
1832 The company soon ran into difficulty and its survival was guaranteed by investment from William Chance and George Chance who owned a successful iron merchants in Great Charles Street, Birmingham. They became partners in the business, now called Chance Brothers and Co.
In 1832 they made the first British cylinder blown sheet glass with the expertise of Georges Bontemps, a French inventor from a glassworks in Choisy-le-Roi.
1834 Robert Lucas Chance introduced improved cylinder glass sheet, using a German process to produce finer quality and larger panes. The process was used extensively until early in the 20th Century to make window glass. From this period onwards machines were developed to automate the production of obscured glass and later, window glass.
1835 Chance and Hartley had begun chemical manufacture at Smethwick when analyst Richard Phillips invented a new method of making saltcake. To develop the process and to provide more space at Smethwick for glassmaking, they bought land in Oldbury, Worcestershire. Chemical manufacturing was moved to Oldbury, which was to become Oldbury Chemical Works, the largest chemical works in the Midlands.
1836 the Hartley brothers left Chance and Hartley (which then became Chance Brothers and Co) and moved north to Sunderland to set up their own business James Hartley and Co.
1836 James Timmins Chance was obliged, on leaving Cambridge University, to join his uncle, Robert Lucas Chance, and his father, William Chance, in their glassworks at Spon Lane, Smethwick. While still at Cambridge, J. T. Chance had invented a process for polishing sheet glass to produce a ‘patent plate’ .
1837 The Chance glass company in Smethwick provided 1.2m lengths of glass for the Great Conservatory at Chatsworth, whereas up to this point only 0.9m lengths had been possible. They went on to produce glass for both Crystal Palace and the Palace of Westminster .
1838 Started making optical glass .
1850 Started making dioptric lenses for light houses, having recruited a highly experienced worker from the French industry.
1851 Chance Brothers and Co made the glass for the 1851 Great Exhibition. Other projects included the glazing of the Houses of Parliament, and the white glass for the four faces of the Westminster Clock Tower (being the only firm at the time able to make such glass). The ornamental windows for the White House in America were also made by Chance Brothers and Co. Other products included stained glass windows, ornamental lamp shades, microscope glass slides, painted glassware, glass tubing and specialist types of glass.
1852 Dioptric Revolving Lighthouse 
1854 Patent. '1217. And James Timmins Chance, of the Glass Works, near Birmingham, in the county of Warwick, has given the like notice in respect of the invention of "improvements in machinery for roughing or preparing the surfaces of glass."— A communication'
1856 Partnership change. '...the undersigned, William Chance, the second son, Phebe Chance, the widow, James Timmins Chance, the eldest son, and George Chance, the third son of William Chance the elder, who died on the 8th day of February last, do hereby give notice, that the partnership lately subsisting between us by reason of the said William Chance (the son) having carried on business as a Merchant, at Birmingham, in the county of Warwick, and elsewhere, under the firm of William Chance, Son, and Company, on the joint account of himself, as the surviving partner, and of the said Phebe Chance, James Timmins Chance, and George Chance, as the acting executrix and executors of the said William Chance the elder, determined and expired by effluxion of time, on the 30th day of June last. All debts owing to and by the said firm will be respectively received and paid by the said William Chance (the son) by whom the business of a Merchant is now being carried on under the firm of William Chance and Company on his own separate account...'
1860 J. T. Chance joined Michael Faraday, acting for Trinity House, in experimenting with the company's light at the Whitby southern lighthouse, which led to improvements in the process that the company used for setting up such lights .
1862 William Siemens was experimenting with his concept of the regenerative furnace, aiming to find materials and methods of construction able to withstand the great heat produced. Many of the early failures to achieve this had resulted in the destruction of the furnace itself, or of its accessories. The idea of substituting gaseous fuel for solid fuel seemed to have merit; the solid fuel would be converted into combustible gases in a separate construction called a "gas producer." A patent was secured, and gas furnaces were constructed, some of which reduced fuel consumption by fifty per cent. Chance Brothers and Co quickly had 13 of the furnaces in use, together with a special one for optical lighthouse lenses, something which required especial care and quality. Siemens explained the furnace to Faraday, who lectured on it at the Royal Institution, that being the last address he ever delivered. The regenerative gas furnace soon became a financial success from its enormous saving of fuel. The furnace was awarded a Grand Prize at the Paris Exhibition of 1867.
1873 Optics for Longstone lighthouse, Farne Islands. (Exhibit at Birmingham Thinktank museum). Chance Brothers and Co became a major lighthouse engineering company, producing optical components, machinery, and other equipment for lighthouses around the world. James Timmins Chance pioneered placing lighthouse lamps inside a cage surrounded by Fresnel lenses so as to increase the available light output; these cages revolutionised lighthouse design. Another important innovation from Chance Brothers and Co was the introduction of rotating optics, allowing adjacent lighthouses to be distinguished from each other by the number of times per revolution that the light flashes. John Hopkinson, the noted English physicist and engineer, invented this system.
c.1880 The development of the MacArthur-Forrest process for extracting gold from low-grade ore and mine tailings using cyanide excited the interest of a number of companies including Chance Brothers
1888 Chance Brothers introduced machine rolled patterned glass.
1888 The Aluminium Co constructed its first plant at Oldbury, adjacent to the works of Chance Brothers and Co from whom it received supplies of muriatic acid for use in the production of chlorine, and returned the residual carbonate of soda to Chance Brothers and Co .
1890 Chance Brothers' chemical works at Oldbury was converted into a private limited liability company: the Oldbury Alkali Company Limited.
1894 Albright and Wilson and Oldbury Alkali Co, neighbours in Oldbury and both engaged in the production of cyanide, decided to join forces in that business. A small subsidiary, British Cyanides Co Ltd, was formed under the chairmanship of Alexander Chance, and a plant was constructed on a piece of land adjacent to both companies. They experienced difficulties in converting sulpho-cyanide into cyanide. When the South African War broke out in 1900, the largest market for cyanide disappeared and all but 2 of the British suppliers left the business, one of the surviviors being British Cyanides Co.
1894 Antwerp Exhibition. Third-class lighthouse and dioptric lens. 
1902 Lighthouse works established in 1850 are very extensive. 
1913 Acquired the Glasgow Plate Glass works.
1914 Manufacturers of window glass, optical glass, rolled glass, vitreous tiles and mosaics, lighthouses and searchlights of Spon Lane, Smethwick, Birmingham. Glass makers.
1920 January - Physical and Optical Societies Exhibition. Exhibitor. 
1920 May - Aerial Lighthouses. Article and illustrations in The Engineer. 
1937 Lighting equipment for aerodromes and airways. 
1939 See Aircraft Industry Suppliers
1939 A new subsidiary trading as Umbroc Ltd., was established at St. Helens to manufacture optical glass.
1945 Pilkington acquired a 50% shareholding in Chance.
1947 Listed Exhibitor - British Industries Fair. Manufacturers of Optical Glass Mouldings, Slabs, Colour Filters. Ophthalmic Glass. "Veridia" Precision Tubing. "Ballotini" Spheres. Heat Absorbing Glass. Arc Welding Glass. "Hysil" Laboratory Glass. Prismatic Condenser Lenses. Microscopic Slides and Cover Glasses. (Olympia, Ground Floor, Stand No. A.1079) 
By 1952 Pilkington had assumed full control of Chance Brothers
The production of flat glass ceased at Smethwick in 1976. The remainder of the works closed in 1981, ending over 150 years of glass production at Smethwick.
The remaining glass tube processing was moved to Malvern where the operation was incorporated as an arms-length subsidiary of Pilkington, under the old name Chance Brothers Ltd. Since then the company has continued to develop its range of products and capabilities.
In 1992, during a period of rationalisation at Pilkington, Chance became an independent company, changing its registered name to Chance Glass Limited, but retaining the historical Chance logo. Further processes have since been added.
'The Chance Glassworks is one of the most important industrial heritage sites in the Country. We want to save the site for the nation, creating a vibrant environment for business and the local community.' See the Trust's website. The old scaffolding-clad Smethwick factory is a familiar sight to users of the M5 motorway.