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of Kirkstall Road, Leeds 4.
Manufacturer of all kinds of ironwork, axles and springs for road vehicles. Later became a leading maker of automobile springs supplying most British car manufacturers.
1850 Company was founded in Bradford by Jonas Woodhead.
1861 Employing 5 Men and 4 Boys.
1871 Employing 10 Men and 5 Boys.
1881 Employing 22 Men and 4 Boys.
c.1892 moved to Leeds.
1920 Private company incorporated to take over the business of Jonas Woodhead and Sons of Leeds.
c.1920 the firm concentrated on laminated springs. The whole plant was rebuilt and new machinery installed. The business also extended into railway and tramway springs.
1927 See Aberconway for information on the company and its history
1935 Company made public. Kyle became managing director and Jonas Woodhead was sales manager.
1944 Advert for trunnion end springs for heavy transport vehicles
1961 Vehicle suspension specialists, producing laminated and coil springs, hydraulic shock absorbers for road and rail vehicles, pressed steel products, fabricated steel work, structural steel work, conveyor idlers and agricultural implements. 2,000 employees. 
1970 Agreement to exchange technical information with Hoesch of Germany which would enable supply of parts to car companies who wanted to manufacture across Europe.
Name change to Jonas Woodhead - (dropped the 'and Sons' part)