Apparatus for producing glass fibers having insulating material with a refractory fabric

Claim 2

Apparatus for supply of heat-softened mineral material comprising: a feeder having side walls and a bottom wall with orifices formed therein through which streams of heat-softened mineral material may flow; support means for the feeder, such support means being in spaced apart relationship with the side walls at the bottom of the side walls; a refractory insulating material filling the space at the bottom of the side walls between the feeder and the support means, the refractory material encompassing the side walls of the feeder and providing supporting connection between such feeder and support means; and a fabric of heat resistant material covering at least a portion of the bottom surface of the refractory insulating material between the feeder and the support means, the fabric being suitably attached at opposite sides of the covered bottom surface of the refractory material and being in reinforcing relation with the refractory material.

Claim 3

Apparatus for supply of heat-softened mineral material, as recited in claim 1, wherein the fabric is composed of heat resistant fiber selected from the group consisting of glass, quartz, silica, refractory or asbestos.

Claim 4

Apparatus, as recited in claim 1, wherein the heat resistant fabric comprises woven filaments.

Claim 5

Apparatus for supply of a plurality of streams of heat-softened glass for attenuation into glass fibers, comprising: a feeder having side walls and a bottom wall with orifices formed herein for the delivery of streams of glass; support means in spaced relation about the bottom of the side walls of the feeder; a cast refractory insulation filling the space between the feeder and the support means to provide a supporting connection between the feeder and support means, the cast refractory surrounding the side walls of the feeder; and a fabric of heat resistant material convering at least a portion of the bottom surface of the cast refractory insulation between the feeder and the support means, the fabric being suitably attached to the feeder and the support means and being in reinforcing relation with the refractory material.

Claim 6

Apparatus for supply of a plurality of streams of heat-softened glass for attenuation into glass fibers, comprising: a feeder having side walls and a bottom wall with orifices formed herein for the delivery of streams of glass; support means in spaced relation about the bottom of the side walls of the feeder; a cast refractory insulation filling the space between the feeder and the support means to provide a supporting connection between the feeder and support means, the cast refractory surrounding the side walls of the feeder; and a fabric of heat resistant material convering at least a portion of the bottom surface of the cast refractory insulation between the feeder and the support means, the fabric being suitably attached to the feeder and the support means and being in reinforcing relation with the refractory material.

Claim 7

Apparatus for supply of a plurality of streams of heat-softened glass for attenuation into glass fibers, comprising: a feeder having side walls and a bottom wall with orifices formed in the bottom wall for delivery of streams of heat-softened glass; support means in spaced apart relationship with the bottom of the side walls of the feeder; a heat resistant fabric overlapping a portion of the outside surface of the side walls to the bottom of the side walls and extending from the bottom of the side walls to the support means and overlapping a portion of the inside surface of the support means; and a cast refractory insulation disposed between the feeder and the support means so that the cast refractory encompasses the side walls of the feeder and is in direct contact with the fabric whereby the fabric is in reinforcing relation with the bottom of the cast refractory and is held in place by the compressive and frictional forces exerted by the cast refractory on the portions of the fabric which overlap the outside surface of the side walls and the inside surface of the support means.

Claim 8

Apparatus for supply of a plurality of streams of heat-softened glass for attenuation into glass fibers, comprising: a feeder having side walls and a bottom wall with orifices formed in the bottom wall for delivery of streams of heat-softened glass; support means in spaced apart relationship with the bottom of the side walls of the feeder; a heat resistant fabric overlapping a portion of the outside surface of the side walls to the bottom of the side walls and extending from the bottom of the side walls to the support means and overlapping a portion of the inside surface of the support means; and a cast refractory insulation disposed between the feeder and the support means so that the cast refractory encompasses the side walls of the feeder and is in direct contact with the fabric whereby the fabric is in reinforcing relation with the bottom of the cast refractory and is held in place by the compressive and frictional forces exerted by the cast refractory on the portions of the fabric which overlap the outside surface of the side walls and the inside surface of the support means.

Claim 9

Apparatus for supply of heat-softened mineral material comprising: a feeder having side walls and a bottom wall with orifices formed therein through which streams of heat-softened mineral material can flow; support means for the feeder, such support means being in spaced apart relationship with the side walls of the feeder at the bottom of the support means; a refractory insulating material filling the space between the feeder and the bottom of the support means, the refractory material encompassing the side walls of the feeder and providing supporting connection between such feeder and support means; and a fabric of heat resistant material covering at least a portion of the bottom surface of the refractory insulating material between the feeder and the support means, the fabric being suitably attached at opposite sides of the covered bottom surface of the refractory material and being in reinforcing relation with the refractory material.

Claim 10

Apparatus for supply of heat-softened mineral material comprising: a feeder having side walls and a bottom wall with orifices formed therein through which streams of heat-softened mineral material can flow; support means for the feeder, such support means being in spaced apart relationship with the side walls of the feeder at the bottom of the support means; a refractory insulating material filling the space between the feeder and the bottom of the support means, the refractory material encompassing the side walls of the feeder and providing supporting connection between such feeder and support means; and a fabric of heat resistant material covering at least a portion of the bottom surface of the refractory insulating material between the feeder and the support means, the fabric being suitably attached at opposite sides of the covered bottom surface of the refractory material and being in reinforcing relation with the refractory material.