Assertion: lamp's design | /r/SimilarTo | his earlier hot-blastdesign
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Source sentences:
text: This design is similar to his earlier "hot-blast" design, except that the oxygen-depleted hot combustion byproducts are redirected and prevented from recirculating back to the burner by redesigning the intake products so that only oxygen-rich fresh air is drawn from the atmosphere into the lamp ("the inlets for fresh air are placed out of the ascending current of products of combustion, and said products are thereby prevented from entering [the air intake]").