Class A sheathed smokebox

[NW Mailing List]

Lagging and Jacket  I doubt any of it was for ascetics it has a function around the lines that I expressed same with the  jacket on the firebox sheets it’s all to do with expansion and lessons the wear and tear

Sent from my iPhone

> On Feb 6, 2023, at 11:29 AM, NW Mailing List <nw-mailing-list at nwhs.org> wrote:
> 
> 
> "Lagging" is the asbestos underneath the metal cover or "Sheathing".
> 
> Jimmy Lisle
> 
> 
> 
> Sent from my Verizon, Samsung Galaxy smartphone
> 
> 
> -------- Original message --------
> From: NW Mailing List <nw-mailing-list at nwhs.org>
> Date: 2/6/23 10:21 AM (GMT-05:00)
> To: N&W Mailing List <nw-mailing-list at nwhs.org>
> Subject: RE: Class A sheathed smokebox
> 
> 1.  It may be better to refer to what is here being called "sheathing," by its proper name, "lagging."  (Lagging was asbestos insulation, pressed into large slabs perhaps 4 inches thick, and perhaps a foot high and about 24 inches long, stacked along the outer shell of the boiler or the firebox wrapper sheet, all held in place by an outer sheet steel wrapper.)
> 
> -- abram burnett, 
> Turnip Oil: the Alternative Fuel to Save the Planet
>  
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