[TheForge] burner question

[Dave Brown]

At 12:23 12/01/03, you wrote:
>Andy,
>
>There is a drawing here...http://www.blacksmithsjournal.com/forgeinfo.html
>
>There is no flare on the end of the burner that goes into the forge. The 
>outside end is a piece of pipe that telescopes over the main burner pipe. 
>The gas goes in the end. There are cut outs on the burner tube and the 
>telescoping cap that allow for air adjustment.

Looks like a Bunsen burner to me.  But then all of our gas burners are 
variants of the basic Bunsen Burner.

Now that I think of it, maybe the bell reducer isn't necessary for anything 
other than supporting the gas jet.  The "side arm" burner that's been 
discussed doesn't use a bell.  The combustion air is drawn in through the 
side, much like the design of Hoffman's.  Makes sense to me.  But what do I 
know, I didn't discover it, Robert Bunsen did back in 1855.  I don't know 
who first installed on in a reverbratory furnace, but I'll wager a small 
sum that it wasn't too much later.

I notice that he has a flat floor and walls with an arched top and that the 
burner tube points up so that the flame is directed at the roof rather than 
down directly onto the metal.  I like this idea rather than putting the 
burner tube in up high, and ever more so in comparison to burners that have 
the flame directed straight down at the floor.

Dave Brown
Heritage Smithing
Green Bay, WI
ABANA, UMBA, GoM, MODA, ARG