Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 162,257 pages of information and 244,498 images on early companies, their products and the people who designed and built them.
Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 147,919 pages of information and 233,587 images on early companies, their products and the people who designed and built them.
50. GARDNER, HANNIBAL, 3 Essex Street, Islington — Inventor.
Double cone blocks, or artificial hollow stones for building wharf and sea walls, docks, harbours, breakwaters, lighthouses, baths, warehouses, etc. The object is to facilitate building in water to any depth without damming, and with unusual rapidity; when the cavities are filled in with cement or concrete, a solid mass is formed.
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