Flange-boiler insulation cover attachment

Claim 2

An improved method for protecting lagging and insulation layers of a furnace windbox wall, wherein the windbox wall has an opening for receiving a mounting tube therethrough suitably welded therein, said windbox wall covered with the insulation layer and the outer lagging layer, said lagging having a suitable opening for the projection of the mounting tube therethrough, wherein the improvement comprises the steps of: forming a strip of material of L-shaped cross section having a relatively thin gauge, cutting the strip transversely on the L cross section along the longer end thereof, tacking a beginning end of the strip to the exterior surface of the mounting tube; bending and forming said L-shaped member about the circumference of the mounting tube to engage with the beginning thereof, forming a bead along the short end of the L-shaped member engaging with the circumference of the mounting tube for forming a weld therewith such that a flange is formed of strips of the material with Radially extending projections; and thereafter suitably fastening the lagging over the windbox and attaching same to the extending radial projections of said flange, such that the opening in the lagging is secured about its periphery for protecting the lagging and intermediate insulation layer.

Claim 3

The method described in claim 1 wherein when the circumference of the mounting tube is smaller than about three inches, the method includes the further steps of cutting of the L-shaped member entirely therethrough and attaching individual sections of said L-shaped members to said outer periphery of the object.

Claim 4

In a furnace windbox wall having an opening for receiving a mounting tube welded therein and having an insulating layer with sheet metal lagging covering the outside of said wall, said lagging having a hole therein corresponding to the projection of said mounting tube through said windbox wall the improvement comprising: a protective mounting flange attached to said mounting tube including: a strip of bendable material having an L-shaped cross section, one end leg of the L being substantially longer than the other, said strip having transverse cuts therein extending across the entire length of the longer leg of the member, permitting the strip to be bent circumferentially about the periphery of the mounting tube, said mounting flange when formed completely about the periphery of the mounting tube forming radial strips extending outwardly from the outer surface of the mounting tube and fastened about the periphery of the mounting tube along the surface of the short leg of the L-shaped member, said lagging covering the insulating layer and radial strips, each of said radial strips attached to said lagging by suitable fastening means through each of said legs, whereby the sheet metal lagging may be secured to the flange for preventing damage to the lagging and insulation layer.

Claim 5

In a furnace windbox wall having an opening for receiving a mounting tube welded therein and having an insulating layer with sheet metal lagging covering the outside of said wall, said lagging having a hole therein corresponding to the projection of said mounting tube through said windbox wall the improvement comprising: a protective mounting flange attached to said mounting tube including: a strip of bendable material having an L-shaped cross section, one end leg of the L being substantially longer than the other, said strip having transverse cuts therein extending across the entire length of the longer leg of the member, permitting the strip to be bent circumferentially about the periphery of the mounting tube, said mounting flange when formed completely about the periphery of the mounting tube forming radial strips extending outwardly from the outer surface of the mounting tube and fastened about the periphery of the mounting tube along the surface of the short leg of the L-shaped member, said lagging covering the insulating layer and radial strips, each of said radial strips attached to said lagging by suitable fastening means through each of said legs, whereby the sheet metal lagging may be secured to the flange for preventing damage to the lagging and insulation layer.

Claim 6

The apparatus as described in claim 3 wherein each of the strips are about one inch in width and the L-shaped member has a long end of about three inches and a short end of about one half inch and a gauge of about 14.

Claim 7

The apparatus of claim 3 wherein the L-shaped strips may be fabricated from a continuous length of material and cut to size for the particular shape and size of the object involved.

Claim 8

The apparatus of claim 3 wherein the tube object may be mounted in an opening of a wall and may be mounted at an angle of up to about 45 degrees from a perpendicular to the wall.

Claim 9

The apparatus of claim 3 wherein the tube may be mounted in an opening of a wall and may be mounted at an angle of about up to 30 degrees from a perpendicular to the wall for tubes with a diameter of less than about three inches.