R. and J. Dempster
of Gas Plant Works, Oldham Road, Manchester. Telephone: Collyhurst 2554. Telegraphic Address. "Scrubber, Manchester". (1937)
1884 Company established. See Robert Dempster and John Dempster and also their father's company Robert Dempster and Sons
1893 Private company.
1894 Joined with Glengarnock Iron and Steel Co to form the Glengarnock Chemical Co to recover sulphate of ammonia and tar from the blast furnaces gases.
1909 Description of a columnless (helically-guided) 3.5 million cu ft gasholder constructed by Dempster to replace a column-guided one at Redheugh gasworks.[1]
1914 Gas and chemical plant manufacturers. Specialities: all kinds of structural ironwork, coke oven and blast furnace recovery plant, gasworks installations, elevators and conveyors, condensers, exhausters, steam engines and pumps. Employees 632. [2]
1930 Description and illustrations of a waterless 8 million cu. ft. gasholder made for the Gas Light and Coke Co at Southall gasworks under MAN patents. Erection started in 1928. It was a 22-sided polygon, measuring 203ft. 6in. over tho corners with a height of 279ft. to the eaves of the roof. The total weight of steel was approximately 2400 tons. The steel sections were supplied by Bolckow, Vaughan and Co, the Frodingham Iron and Steel Co, and the Earl of Dudley's Round Oak Works, Ltd. The steel plates were obtained from the Park Gate Iron and Steel Co, the Appleby Iron Co, and Bolckow, Vaughan and Co. The piston and the bottom plates were all 3/16" thick, while the flanged side plate thickness was 7 B.G. About 75 tons of special tar were required for sealing purposes, and 584 tons of concrete blocks were needed for loading tho piston to give the normal working pressure. [3]
1935 See R. and J. Dempster:1935 Review
1937 Listed Exhibitor - British Industries Fair. Manufacturers of all types of Gas and Chemical Plant for Gas and Coke Oven Works. Condensers, Washers, Extractors, Gasholders, Tanks, Benzole, Ammonia and Tar Plants. Steel Mains and Structural Ironwork. (Stand No Ca.503) [4]
1961 Constructional gas and chemical plant engineers, producing gasholders, gas works plant and chemical plant. 600 employees. [5]
1962 Entire share capital purchased by R. T. Newsham.[6]
1967 Chairman and major shareholder Ronald Thomas Newsham, was put on trial accused of committing serious accounting fraud against the company.[7]
See Also
Sources of Information
- ↑ The Engineer 1909/12/03 pp.577-8]]
- ↑ 1914 Whitakers Red Book
- ↑ The Engineer 1930/01/24
- ↑ 1937 British Industries Fair Page 354
- ↑ 1961 Dun and Bradstreet KBE
- ↑ The Times, May 17, 1962
- ↑ The Times, October 31, 1967