. Water & sewage works . u the cases anddrawn taut for the rigid bracing of theframing. The outer faces of all swinging doors,which are built of No. 10 gage steel, arepaneled and finished with drawn steel flexible sheet with water-tight, smoke anddust-proof joints. Ball-bearing steel pul-leys are placed at the top and bottom anaare so connected with the two leaves thatthe closing of either leaf will also closethe other. The ends of omnibuses are ofXo. 10 gage steel, while thebacks of same are of No. 16 gagesteel. The battleship linoleumtops are supported on No. 10gage steel false tops and boun
. Water & sewage works . u the cases anddrawn taut for the rigid bracing of theframing. The outer faces of all swinging doors,which are built of No. 10 gage steel, arepaneled and finished with drawn steel flexible sheet with water-tight, smoke anddust-proof joints. Ball-bearing steel pul-leys are placed at the top and bottom anaare so connected with the two leaves thatthe closing of either leaf will also closethe other. The ends of omnibuses are ofXo. 10 gage steel, while thebacks of same are of No. 16 gagesteel. The battleship linoleumtops are supported on No. 10gage steel false tops and boundaround the edges with smallbrass channels or angles. Wheelsare constructed of red fibre,equipped with anti-friction roll-er bearings. Rear wheels are 12inches in diameter and arespaced to carry two-thirds of theload. Front wheel is 5 inches indiameter and is secured with asolid box frame. The legs of tables are formedfrom 2-inch steel angles tied to-ROLLER BOOK SHELF CASES, Cook County Court gether and braced with Vs by. House. Chicago. III. molding, all over 2 feet in height beingequipped with a three-point locking de-vice. All of the sliding doors roll on two ormore 3-inch brass wheels attached to theback of the door or concealed in bottomrail, and so arranged as to operate ongrooves formed by % by 1-inchbrass bars. All sliding strips,guides and similar friction mem-bers are of brass. Wherevertwo or more sliding doors en-close the front of the case thesedoors are so arranged that onedoor slides in front while theother slides behind in order thatpractically the entire front ofthe case may be opened at one :time. All curtains are of the sim-plex or duplex type and are con-structed of No. 24 gage steel,slats being % of an inch edges of these slats arestiffly beaded, one edge beingsufficiently larger than thaton the other edge to permit the slippingof the strips into one another so as toform a smoothly working hinge; the en-tire curtain thus forming a continuous 1-inch
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectsewerage, bookyear191
