. Railway mechanical engineer . en the blower and the driving unit is stand-ard practice on all I-R turbo-blowers. The machines are allof the closed intake type. The intake opening is at thebottom and the discharge at the top. There are no rubbingsurfaces in the I-R turbo-blower, precluding the necessity foradjustment to take up wear and minimizing the cost of main-tenance. The only lubrication necessary is that of the heal-ings, all other parts working without friction. ■ PROTECTING BLUE PRINT PAPER The Security tube, shown in the illustration, has beenbrought out by Kolesch & Co., 138 Fulton
. Railway mechanical engineer . en the blower and the driving unit is stand-ard practice on all I-R turbo-blowers. The machines are allof the closed intake type. The intake opening is at thebottom and the discharge at the top. There are no rubbingsurfaces in the I-R turbo-blower, precluding the necessity foradjustment to take up wear and minimizing the cost of main-tenance. The only lubrication necessary is that of the heal-ings, all other parts working without friction. ■ PROTECTING BLUE PRINT PAPER The Security tube, shown in the illustration, has beenbrought out by Kolesch & Co., 138 Fulton St., New York,for storing and protecting blueprint paper, tracing linen anddrawing paper. The tube is made in three lengths, 30, 36and 42 in., of heavy tin japanned black. It tends to elimi-nate waste and loss of time and avoids the inconvenience ofopening and closing the tube every time paper or cloth isrequired. The paper is placed in the tube by pushing backthe slide cover and closing it, the paper remaining protected. Container for Blue Print Paper and Tracing Linen without again opening the tube until the entire roll has beenused. When a sheet of specified length is to be used, a springmeasuring tape, which is attached to the tube, is drawn tothe required length, the paper or cloth drawn out and cutby means of a straight cutting edge provided for the purpose. The tube is provided with brackets so that it can be fas-tened to the wall, or it may be fastened to a drafting table,as desired. May, 1916 RAILWAY MECHANICAL ENGINEER 267 RailwayMechanical Engineer (Fo g RAILWAY AGE GAZETTE, MECHANICAL EDITIONwith which the AMERICAN ENGINEER was incorporated) Published on the First Thursday op Every Month iy theSIMMOXS-BOARDMAN PUBLISHIXG COMPAXY Edward A. Simmons, President L. B. Sherman, Vice-President Henry Lee, Vice-President and Treasurer M. H. Wiom, Secretary Woolworth Building. New York, X. Y. Chicago: Transportation Bldg. Cleveland: Citizens* Bldg. London: Queen Annes Cham
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
