slow conductor of heat for metal dust and consequently to become very filthy after a desire to use the invention for only a special contract, in certain parts of the burner, and in the employ- little use. Mr. Warburton, of Philadelphia, has re- or to purchase local rights, or to buy out the entire… … forward away from the rear of the hat. mation from the inventor and patentee, W. F. War- composing the other two pieces, a 5, may be made of To the inside cf the hat, between the body and burton, 480 Chestnut street, Philadelphia, Pa. lead or other fusible metal when cheapness is an ob- the sweat…
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