Society of Glass Technology · [Sheffield] · leaf 647
230. Muffle Lehr. H. M. Thompson (U.S.A. Pat., February 19th,1918, No. 1257150. Filed October 1st, 1917, No. 194132).—Relates to a. muffle lehr designed to prevent the leakage of gasbetween the combustion chamber and the muffle or annealingchamber, and thus avoid discoloration of the ware. The… … Fig. 124. 10, that are suspended by rods, 11, from outside beams, 10. Thetiles thus form the floor of the combustion chamber, 7, which itseparates from the annealing chamber, 4, containing an endlessband, 5, the ware on the band being annealed by heat conductedthrough the tiles. Division walls, 9,…
Glass
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