Browsing named entities in Knight's Mechanical Encyclopedia (ed. Knight). You can also browse the collection for Grey or search for Grey in all documents.

Your search returned 2 results in 1 document section:

charcoal furnace. No. 48,918, Ells, 25, 7, 1865 Sheets annealed; placed loosely in a cast-iron box, with scale of oxide, animal charcoal, coke, lime, or other decarbonizing or cutting agents; agitated while heated in the furnace. No. 50,203, Grey, 26, 9, 1865. Heats the sheets previous to finishing; cools to a point below cherry-red; rolls without removing scale; repeats operation. No. 52,647, Perkins, 13, 2, 1866. Cleans and brightens mechanically; then heats in an oven to develop coa bath of flour of zinc 1, graphite 1, tallow enough to make consistence of cream, when melted; a pack of three sheets is placed beneath a steam-hammer with a hard-wood face; the anvil having a similar face; grain of wood vertical. No. 103,323, Grey, 24, 5, 1871. Scale removed by an acid bath and subsequent heating on racks in an oven to raise the scale in blisters. A thin, tenacious oxide forms on the surface and is preserved. Rolled cold, first singly, then in packs; annealed. No. 103