The Patent slip was invented by Scotsman Thomas Morton in 1818 as a cheaper alternative to a dry dock for ship repair. It consisted of an inclined plane, which extended well into the water and wooden cradle onto which a ship was floated. The ship was then attached to the cradle and hauled out of the water up the slip. In 1832, a House of Commons Select Committee under the chairmanship of the, Rt.

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  • The Patent slip was invented by Scotsman Thomas Morton in 1818 as a cheaper alternative to a dry dock for ship repair. It consisted of an inclined plane, which extended well into the water and wooden cradle onto which a ship was floated. The ship was then attached to the cradle and hauled out of the water up the slip. In 1832, a House of Commons Select Committee under the chairmanship of the, Rt. Hon Sir George Cockburn, was convened to adjudicate on a petition by Thomas Morton to extend the duration of his patent. The committee eventually did not support the patent extension. It was claimed that not only was the cost of a slip one tenth of a dry dock but also by hauling completely onto a clear dry area that it was easier to carry out the maintenance. Early design would have used manpower and block and tackle to provide mechanical advantage, later solutions used steam engines.
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  • The Patent slip was invented by Scotsman Thomas Morton in 1818 as a cheaper alternative to a dry dock for ship repair. It consisted of an inclined plane, which extended well into the water and wooden cradle onto which a ship was floated. The ship was then attached to the cradle and hauled out of the water up the slip. In 1832, a House of Commons Select Committee under the chairmanship of the, Rt.
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  • Patent slip
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