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...that after Walter Hunt patented the safety pin in 1849, he sold the rights to it for $400?
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| Number | Title | Issue Date |
| 4390357 | Methods of and system for clean air delivery to lightguide fiber drawing apparatus A system (20) for providing clean air to an apparatus (24) for drawing lightguide fiber (21) from a preform (22) includes a plenum (52) and ducts through which room air is pulled and filtered. The filtered air is flowed into each of a plurality of stacked... | 06/28/1983 |
| 4383843 | Methods of and apparatus for heating a preform from which lightguide fiber is drawn Apparatus for heating a vertically suspended preform from which lightguide fiber is drawn includes a torch having a plurality of ducts that open to a surface adjacent to a lower end of the preform. Fuel and oxidizing gases flow from the ducts, mix at the ... | 05/17/1983 |
| 4317666 | Process and apparatus for controlling the drawing of an optical fibre from a glass preform In the drawing of an optical fibre from a glass preform or gathering mould maintained at an appropriate temperature, a process and a system is described for controlling and regulating the characteristics of the optical fibre. To this purpose the fibre for... | 03/02/1982 |
| 4309201 | Method of and apparatus for manufacturing optical fibres Method of and apparatus for manufacturing optical fibers in which a preform is heated in a furnace which is provided with a graphite heating element and a fiber is drawn from the heated preform. The fiber is subsequently cooled, provided with a coating, a... | 01/05/1982 |
| 4270942 | Apparatus and method for drawing of glass fiber An apparatus and method for use with a bushing assembly of the type wherein glass fibers are drawn through an orifice plate having a flat undersurface against which bulk gas is directed to effect cooling and fiber attentuation. A selectively adjustable bu... | 06/02/1981 |
| 4251250 | Process and apparatus for the production of light conducting fibers A process and apparatus for producing light conducting fibers characterized by introducing multi-component glasses into a quartz glass crucible, melting the multi-component glasses, homogenizing and refining the melt, subsequently drawing the glass fiber ... | 02/17/1981 |
| 4154592 | Method of drawing optical filaments A method of forming an article such as an optical waveguide filament by disposing a draw blank in a cylindrical muffle. The muffle is heated to a temperature sufficient to cause a first end of the blank to reach the drawing temperature of the material the... | 05/15/1979 |
| 4150937 | Apparatus for forming filaments Apparatus is provided for fluidically attenuating streams of material into filaments wherein a plurality of elements are adjustably mounted for movements substantially along and transverse to the path of advancement of the filaments and for lateral moveme... | 04/24/1979 |
| 4126436 | Apparatus for minimizing drawn filament diameter variation An apparatus is disclosed for drawing glass optical waveguide filaments having minimal diameter variation. A draw blank is supported within an elongated, heated, tubular muffle which heats the blank to its draw temperature. Gas is supplied to that end of ... | 11/21/1978 |
| 4012213 | Apparatus for forming refractory fibers Apparatus for forming fibers of refractory materials. A melt volume is continuously formed on a feed rod of the material to be fiberized and a fiber drawn therefrom. The melt volume is formed by introducing the feed rod at a predetermined velocity into a ... | 03/15/1977 |
