J. & D. Shearer was an engineering and farm machinery manufacturer based in Mannum between 1882 and 1912, founded by John and David Shearer, and continued separately as John Shearer & Sons of Kilkenny, South Australia, and David Shearer & Co. of Mannum.
History
John and David Shearer were two of a family of six children born to Peter Shearer and his wife Mary in Orkney. The family migrated to South Australia in the Omega, arriving in South Australia on 24 August 1852, living first at Port Adelaide, where their father pursued his trade of stonemason, then at Clare, where the youngest boys attended the local school. At the age of twelve David left to work on a property at Hoyleton, and after two years enrolled with J. S. Cole's Stanley Grammar School in Watervale for a year's tuition; the fees paid for out of his savings. He then worked for two years at his brother William's blacksmith shop at Leasingham. At age 18 he went to work in W. Patterson & Co.'s foundry in Clare. When that business failed he moved to the other end of town where J. G. Ramsay of Mount Barker had a workshop. John served his apprenticeship with J. G. Ramsay, a farming implement merchant and manufacturer of Mount Barker and in 1876 set up a workshop and smithy in Mannum, where David joined him in 1877, repairing farm equipment and paddle-steamers. Between 1877 and 1904 they designed and manufactured agricultural equipment. In 1888 they started manufacture of a wrought ploughshare using a resilient grade of steel developed for him by Meadow's company in England. A similar steel, "Resiflex" was produced by BHP Steel in the 1920s. He invented a stump-jumping plough which he manufactured from 1884. The company John Shearer and Sons was registered in 1923. In 1904 the two partners, each wishing to concentrate on their own specialities, separated as far as manufacturing was concerned, then dissolved their partnership in 1910.
Other interests
In 1898 David Shearer built Australia's first motor car. Steam powered, it had a horizontal boiler with a working pressure of made by his nephew J. A. Shearer. The engine weighed 2 cwt, and developed 20 horsepower and in 1900 travelled from Mannum to Adelaide and return without problem and was shown at the exhibition of the South Australian Chamber of Manufactures.
David Shearer served on the Mannum District Council for 40 years. He was a member of the institute committee, the hospital building committee, Progress Association, and Bowling Club and Rifle Club. He took a great interest in astronomy, and became a member of the British Astronomical Society in 1907. His private observatory built at his home in Mannum was fitted with a five-inch O.G. refractor.
Family
Peter Shearer and Mary née Kirkness had five sons and one daughter:
second son James Shearer married Mary Carlin on 29 December 1868. He was a wagon maker in Yongala, then worked constructing the railway between Hergott Springs and Oodnadatta, finally with his brothers David and John in Mannum. They had no children, lived at Harvey Street, Woodville.
William Pottinger Shearer married Martha. blacksmith of Coobowie in 1879, farmer with David 1879. They had three sons and two daughters.
John Shearer married Mary Jane Watkins on 15 July 1871. Home 84 Wilpena Tce, Kilkenny.
David Shearer married Mary Elizabeth Williams on 28 February 1883. They had 2 sons & 1 daughter.
Margaret Shearer married Ernest Emil Alexander Schulze on 16 July 1877, lived at Yongala
