Knight's American mechanical dictionary : a description of tools, instruments, machines, processes and engineering, history of inventions, general technological vocabulary ; and digest of mechanical appliances in science and the arts . 1. (Glass.) A roller or cylinder of glassfor Hattening out into a glass plate. 2. (JFcar.) A fur pocket tor tlie hands held infront of the person. This day 1 did first wear a muffle, being my wifeslast years muffle, hut now I have bought her a newone. — Pi;pYss Diary, November 30, 1662. 3. A joining tube driven into the ends of two ad-joining pipes. Muffle. 1. (
Knight's American mechanical dictionary : a description of tools, instruments, machines, processes and engineering, history of inventions, general technological vocabulary ; and digest of mechanical appliances in science and the arts . 1. (Glass.) A roller or cylinder of glassfor Hattening out into a glass plate. 2. (JFcar.) A fur pocket tor tlie hands held infront of the person. This day 1 did first wear a muffle, being my wifeslast years muffle, hut now I have bought her a newone. — Pi;pYss Diary, November 30, 1662. 3. A joining tube driven into the ends of two ad-joining pipes. Muffle. 1. (Metallurgy.) An oven-shaped ves-sel (a) of baked fire-clay, used in assaying for con-taining the cupels or cups in which the alloy underinvestigation is fused. It is open at one end andclosed at the other, and lias slits in the sides to per-mit a draft of air through it. Its use is to protectthe cupels from impurities of fuel while permittingaccess of air. It forms a chamber in the midst ofthe incandescent coals of tlie furnace b. See MUF- FLE-FURNACE ; 2. A ]iulley-blo<-k containing several ^nace. (Mdallurgy.) A furnace witha chamber which is surrounded by incandescent fuel, Fig. Mitffie-Famace. ? and in which cupellation or fusion of metals is per-formed ; the former especially. (SeeCupellation.)The holes in the sides of the muffle are important,as through them a draft is established which oxi-dizes the lead and some other associated metals. a, muffle. c, closed muffle. 6, muffle-furnace. d, cupel-mold. In the process of assaying, the muffle contains thecupel in which the metal is ])laeed. Arsenic is sublimed from arsenical pyrites in amuffle whose eduction-channel leads to a condensingchamber where the arsenious acid is deposited. See ARSEXIC-FlItNACE : CUPELLATION. Muffler. \. (Miisic.) A soft cushion employed to terminate or solten a note. 2. .\ knit wrapper for the head or throat. Mule. A spinning-machine in which the rovings
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