Subject-matter index of patents applied for and patents granted, by B. Woodcroft

Forsideomslag
1861 - 24 sider
 

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Populære passager

Side 49 - Holborn, for certain improvements in machinery for grinding and reducing gold quartz to an impalpable powder, and amalgamating the said ground quartz with quicksilver ; the same being applicable also to the pulverizing and washing of ores, — being a communication.
Side 63 - Devon, watch-maker, for certain improvements in locks (applicable to locks for all purposes), by which they can be made so as to combine increased and perfect security with simplicity and cheapness of construction.
Side 45 - Upholsterer, for improvements in beds, sofas, chairs, and other articles of furniture, to render them more suitable for travelling and other purposes.
Side 43 - Holborn, for improvements in the manufacture of fuel; part of which improvements are applicable to the manufacture of gas and soda, and freeing metals from extraneous substances.
Side 67 - Chancerylane, in the county of Middlesex, civil engineer, for an improved machine for separating ores, metals, and other heavy substances, from mud, sand, gravel, stones, and other impurities.
Side 43 - ... 443. William Chisholm, of Holloway, in the county of Middlesex, chemist, for improvements in obtaining caustic soda and other substances from the residues of articles used in the purification of gas.
Side 23 - Greenock, for an improved composition for the prevention of the decay and fouling of ships* bottoms and other exposed surfaces.
Side 45 - Middlesex, carpenter and ship joiner, for improved arrangements for maintaining a level surface or level surfaces upon or in connection with bodies subject to a rocking motion.
Side 51 - Gent., for improvements in coating metal and other substances with a material not hitherto used for such purposes.

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