. Railway mechanical engineer . e bysome manufacturers for use without hardening and hardened dies are used the heat soon draws the edge ofthe cups, and it is necessary to anneal them before they can berecupped. A testis advisable before a selection is made, sincethere is a wide variation in the number of rivets wliicb can beobtained without rccupping. SIMPLE FURNACE FOR MELTING BRASS BY R. F. CALVERT The illustration shows a design of furnace suitable for meltingsmall or medium quantities of brass, which has been used satis-factorily at the Horton, Kan., shops of the Rock Isla
. Railway mechanical engineer . e bysome manufacturers for use without hardening and hardened dies are used the heat soon draws the edge ofthe cups, and it is necessary to anneal them before they can berecupped. A testis advisable before a selection is made, sincethere is a wide variation in the number of rivets wliicb can beobtained without rccupping. SIMPLE FURNACE FOR MELTING BRASS BY R. F. CALVERT The illustration shows a design of furnace suitable for meltingsmall or medium quantities of brass, which has been used satis-factorily at the Horton, Kan., shops of the Rock Island the furnace one-half to two-thirds full it is possible to meltbrass in about 30 minutes. The shell of the furnace, which is 1 in. thick, is iiuule from twohemispherical castings about 24 in. in diameter. The upper cast-ing has an openmg in the top for pouring, about 8 in. in diameter,and another opening, a little to one side, for the burner. Thecastings are lined with a 2 in. layer iif fire-brick and the lirick is. Furnace for Melting Imed with a 1 in. layer of fire-clay, extopt at the two are then clamped together by means of four lugs and 1 Two of these lugs are formed to act as bearings. Theyare 3 in. in diameter and are supported by a 4 in. x 1 in. wroughtiron frame. Fastened to the outer end of one of these bearingsare three wrought iron handles which are used for turning thefurnace when pouring. The burner is supplied with a 2 in. blastpipe which has an oscillating joint shown at A. This blast pipealso has a slide for regulating the blast, which is shown at B. The burner consists of a 2 in. blast pipe in which are locatedtwo other pipes, one for compressed air and one for oil. The compressed air passes through a ^-in. pipe which enters theblast pipe about 4 in. from the nozzle and terminates about Yi of the nozzle. The oil pipe enters the blast pipe about 6 the nozzle and terminates inside tlie compressed air pipe ata
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
