. Automotive industries . edrained off after each operation. The object of this apparatus is to produce steam atabout 140 deg. Fahr. (60 deg. C) and to let the pieces coolto about 86 deg. Fahr. (30 deg. C). The parts should re-main in the apparatus for 20 minutes. Placing the Pieces in Bath of Boiling Water This operation is the same as in the regular Browningprocess, the parts remaining in the water 20 minutes. Scratch Brushing For this purpose it is necessary to use brushes of steelwire, the diameter of the wire not exceeding 1 in. The detail work of the experiments was carried out
. Automotive industries . edrained off after each operation. The object of this apparatus is to produce steam atabout 140 deg. Fahr. (60 deg. C) and to let the pieces coolto about 86 deg. Fahr. (30 deg. C). The parts should re-main in the apparatus for 20 minutes. Placing the Pieces in Bath of Boiling Water This operation is the same as in the regular Browningprocess, the parts remaining in the water 20 minutes. Scratch Brushing For this purpose it is necessary to use brushes of steelwire, the diameter of the wire not exceeding 1 in. The detail work of the experiments was carried out bymy assistant, W. D. Carpenter, and the results of theirapplication to the work in the plant were most satisfac-tory in every way. The construction of cabinets or heatingrooms depends on the requirements of each individualplant and the supply of air and moisture to these roomsdepends on the facilities available. In any case, the con-trol of the-air supply should be automatic and positive. Tractors in Snow Removal Service. One hundred of these Cleveland tractors were usedffori Co clear New York City streets of snow after tin rect ill star,ii March 10, 1921 AUTOMOTIVE INDUSTRIES THE AUTOMOBILE 559 Status of Commercial Aircraft Shownby Company Development Yes. there is an actual development of commercial flying. This list offlying companies shows that there is the beginning of a transportationservice in the air. Data on landing fields especially interesting. THE fact that there are in this country 21 com-mercial aircraft operating companies that haveflown 25,000 or more miles each will probablysurprise most persons who are interested in air-craft development. Thirty companies have exceeded1000 passengers. These figures are illuminating as tothe progress made in aircraft transportation. It isinteresting also to note that there is apparently abasis for charge for flight, in that the rates charged by these companies range below $1 per mile, but near thatfigure, although in one or tw
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectaeronautics, bookyear
