Up: Patent Index

2,931 · Green · "Glass Lights for Street Vaults, Ships, &c." · Page 3 Home  > Prism Glass  > Patent Index  > Page 3

2,931: 3 of 8

Specification A.D. 1856.--Nº 2931. 3 Green's Impts. in Manufacturing Glass Lights for Street Vaults, Ships, &c. in writing under or their, or one of their hands and seals, should particularly describe and ascertain the nature of the said Invention, and in what manner the same was to be performed, and cause the same to be filed in the Great Seal Patent Office within six calendar months next and immediately after the date of the said Letters Patent.     NOW KNOW YE, that I, the said Jacob Green, do hereby declare the nature of my said Invention, and in what manner the same is to be performed, to be particularly described and ascertained in and by the following statement:--     The nature of my Invention consists, in the first place, of casting or putting molten glass into iron, brass, copper, or other metal frames, the frames being made with a groove or projection, to prevent the glass being separated from the frame by external pressure that may be put upon it after the glass has become solid and annealed.     My Invention consists, secondly, in suspending to the roof of the glass manufactory, or to a framework erected therein, an iron bar, forming a railroad for receiving a flanged pulley, to the axle of which is suspended a chain or rod; to the end of the latter is attached a ladle, having at one end a conveniently-shaped bowl for ladling the molten glass out of the pots, and at the other end a cross handle for the operator. The whole is so arranged and constructed that a single operative can convey large quantities of molten glass from the furnace to the frames, molds, casting plate, or from furnace to furnace, or the pots can be filled with unmolten glass and crude materials for making glass.     To enable others skilled in the art to make and use my Invention, I will proceed to describe its construction and operation, on reference to the Drawing, which forms a part of this Specification, like letters referring to like parts.     Fig. 1 exhibits a vault or deck light with one glass in. a, glass; b, frame.     Fig. 2, section of vault or deck light. a, glass; b, frame; c, groove; g, flange.     Fig. 3, section of friction box. a, glass; b, b, frame.     Fig. 4, vault light with seven glasses. a, a, glass; b, b, frame; i, i, ventilator's holes.     Figs. 5 and 6 are views, in elevation, of the interior of a plate glass manufactory, shewing my improved apparatus, with section of furnace pots and casting table. h, h¹, rafter or beam; h, h, brackets to support rail; n, n, railroad; v, rod with pivot to allow railroad to move; m, flanged pulley; r, rod or chain to connect pulley and ladle; o, cross hand; j, handle; s, the bowl;