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Engineers of Wilmington, Del., USA.
Started as E. and A. Betts in 1860 by brothers Edward (1825-1917) Alfred (1835-1918), sons of Mahlon Betts (born in Attleboro, Pa., on 16 March 1795, died in Wilmington on 4 March 1867).
1889 Advertising boring and turning mills
1901 Some aspects of the company's production described in the US magazine 'Machinery'. It was mentioned that they were using a screwcutting lathe of 24" swing, 16 ft between centres, made by Joseph Whitworth and Co 'twenty or thirty years ago' and 'bought for cutting leadscrews and feed screws and is said to be a most excellent tool for this purpose, the lead screw being yet quite accurate, even after its years of service'.