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of 186 Attercliff Road, Sheffield, maker of pyrometers invented by Harry Brearley.
1908 Company formed by Harry Brearley, Francis Colin Moorwood and William H. Dyson. "Amalgams Co., Limited. This company has just been registered with capital of £2,000 in £1 shares, to take over the business of manufacturers of and dealers in Ferrum cement and silversmith’s rouge, carried by H. Brearley, F. C. Moorwood and W. H. Dyson, and acquire from the said H. Brearley patent No. 9,606 of 1905 for improvements in methods determining the temperature of heated spaces or areas, and the benefit an agreement between the said H. Brearley and Thomas Firth and Sons. Limited, of Riga. The subscribers are;— H. Brearley, F. C. Moorwood, Miss C. K. Mrs, A. Moorwood. W. H. Dyson. C. E. Crank, Mrs. H. T. Brearley. No initial public issue. The number of directors is not to be more than three; the first, are H. Brearley, F. C. Moorwood, and W. H. Dyson. Qualification of permanent directors shares, of ordinary directors £50 shares or stock Registered office:— Attercliffe Road, Sheffield."
1937 Manufacturers of pyrometers, case-hardening compounds and heat treatment specialists. "Hardenite" Case-hardening Compounds. "Sentinel" Pyrometers.
1954 Acquire Tool and Die Heat Treatment
1978 Company merges with Furnace Instruments
1992 Becomes the Brearley Group
By 2002 the company was no longer trading when it was put into liquidation