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John Henry Dewhurst (1854-1921) of John Dewhurst and Son
1871 John Dewhurst 41, engineer at works, lived in Ashton under Lyne with Mary Dewhurst 40, John Henry Dewhurst 16, engine fitter at works, Annie Maria Dewhurst 14, Mary Bevan Dewhurst 12, Wm Cookson Dewhurst 10, Tom Dewhurst 8, Lizzy Dewhurst 4
1921 Obituary 
JOHN HENRY DEWHURST was born in Manchester in 1854, and was educated at Sheffield.
In 1886 he was appointed chief engineer at the Moss Bay Hematite Steel and Iron Co., Ltd., Workington, which position he held until 1889, when he accepted a similar post at the Frodingham Iron and Steel Co., Ltd.
In 1891 he joined his father in partnership, the business - John Dewhurst and Son - being converted into a private limited company in 1902, when he was appointed chairman and managing director. He took out many patents for specialities for iron and steel works plant, and he developed the business so that larger works were installed at Tinsley, Sheffield.
His death took place suddenly, at his residence in Sheffield, on 22nd August 1921, at the age of sixty-six. Read his obituary in The Engineer 1921/09/02.
He became a Member of this Institution in 1895.
1921 Obituary 
JOHN HENRY DEWHURST died on August 22, 1921, at his residence, Beechy Knowle, Richmond, Sheffield.
He was born in Manchester in 1854, and received his engineering training with various firms in Sheffield and Manchester, and was subsequently engineer and chief engineer of various iron and steel companies down to 1891.
In the latter year he joined his father's business, the firm being John Dewhurst & Son until 1902, when it was converted into a limited company.
He was the designer and patentee of the "Dewhurst" system of slag ladles and cars and other steelworks plant.
He was a member of the Institution of Mechanical Engineers, and was elected a member of the Iron and Steel Institute in 1903.
1921 Obituary