. Handbook of construction plant, its cost and efficiency. ize Ft. In. Ft. In. Inches Lbs. Lbs. Lbs. Light 2 3-inch 10 0 8 4 2%*2V2*2% 2V2 480 565 945 Standard 2% 4%-inch 12 0 10 0 3 31/43% 960 1,125 1,625 3% 0) oOh $ Complete Quarry Bar includes carriage, weight and wrenches,but no drill. * When a 2% -inch drill is used on the 3-inch Light Quarry Bar,or a 2% -inch drill is used on the 4%-inch Standard Quarry Bar,a special saddle is necessary. ELECTRIC AIR CHANNELER. This machine is operated on the same principle as the electricair drill heretofore described. The character of current rec
. Handbook of construction plant, its cost and efficiency. ize Ft. In. Ft. In. Inches Lbs. Lbs. Lbs. Light 2 3-inch 10 0 8 4 2%*2V2*2% 2V2 480 565 945 Standard 2% 4%-inch 12 0 10 0 3 31/43% 960 1,125 1,625 3% 0) oOh $ Complete Quarry Bar includes carriage, weight and wrenches,but no drill. * When a 2% -inch drill is used on the 3-inch Light Quarry Bar,or a 2% -inch drill is used on the 4%-inch Standard Quarry Bar,a special saddle is necessary. ELECTRIC AIR CHANNELER. This machine is operated on the same principle as the electricair drill heretofore described. The character of current recommended is the same as for theelectric air drill. 266 HANDBOOK OF CONSTRUCTION PLANT Equipment. One complete Electric-Air Channeler outfit includes the fol-lowing: One Electric-Air Swing Back, Swivel Head Track Channelermounted on a rigid cast iron truck with single flanged truckwheels. One pulsator rigidly mounted on the truck; one motor, either220 volt direct, or 220 volt, 3-phase, 50 or 60 cycle, alternatingcurrent; and one speed-changing Fig. 90. Track Channelers in Operation in the Quarries atBedford, Indiana. In addition to the above the following accessories are pro-vided: 30 feet of flexible protected cable with connections; onedrag pole; three 12-foot sections of track and one 6-foot sec-tion; one set of lifting bales; one spare chuck clamp; one mainfuse box; a full set of wrenches; a full set of tools; and selectedextra parts covering both the mechanical and electrical parts ofthe equipment. Channeler steels are furnished only on order, atextra cost. Price, complete, $4,250 net, f. o. b. factory. When requesting quotations on rock drilling machinery, thefollowing information should be furnished the manufacturer: In Quarrying-. 1. Give the location of work, whether on surface or under-ground. 2. Describe the nature of the rock, whether sandstone, slate,limestone, granite, marble, etc. State whether the material ishard, medium or soft. 3. Is the quarry out
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbuilding, bookyear191
