Arizona republican., 1911-06-04
B|TUL|TH|C
 EQU|PNEN Paving Will Begin in First
 Days of July TIE MACHINERY SOON HERE Barber Asphalt Company Will Soon Begin Work on City Streets Elaborate Plant Required for Paw ing Appliances Used.
TIE MACHINERY SOON HERE

Since the completion of the plans for tine paving of the main business streets of Phoenix, Mir. Conway. the representative Of the Barber Asphalt Company of Los Angeles. has been making arrangements to commence active operations by July l. The ar rival of the paving outfit, will resem- bic the coming of a circus in the number of cars that will be used to carry the varied equipment for bitu- lithic which iS more elaborate than that required for any other style of paving. The large paving companies have so SystematiZed the loading and unloading of their machinery, that the entire paving plant. completely equip ped. including storage wards, corralS and all the other features and de partments necessary to carrying on the work. win be set up, and will be placed in full operation within time scarcely longer than is required to unload and set up the great tents Of a circus.
 In the first cars the grading outfit win arrive consisting of steam pio1y. a number of small blows, grad CTS. fresnoS. wheel scrapers. with dunn wagons. which will be used to haul dirt A twelve ton steam roller win be used in connection with the grading outfit. to settle any soft places there may be in fhe streets. and a smaller five ton roller will also be used to give the final compression to the grade before the concrete is laid The rollers used by the Barber As
 .F ha f1 n Iroouois brand. manufactured at Buff falo. and are built on the same hIgh standard as the remainder of the equipment.
 The concrete equipment will fill number of cars. and although a great many concrete structures have been erected in the Salt River valley, the continuous power driven mixer used br the contractor will have a larger capacity than any that has heretofore been used in Phoenix. Its capacity will be 1900 square yards of concrete paving daily. With it will come the necessary wheelbarrowS. hampers. graders. water hose. and other such equipment Included in the concrete outfit are such tools as are commonly used in connection with cement curb and gutter work and also tools for making culverts and storm drains A number of heavy wagon tarpaulins will be included in the shipment. to be used for covering up the piles of cement which will shortly be unloaded along the city streets, prior to the beginning of paving
 The asphalt plant, in which the materials for the bitulithic surface are assembled and mixed. will include dryers. with revolving rolls. through which the various sizes of stone are passed. These dryers will be kept at a temperature Of 400 to 45O degrees Fahrenheit by oil fires operated in connection with a steam boiler While passing through the dryers all mois- ture will be eliminated from the stone and when it finally comes out al the other end of the rolls into what is known as the boot" it is completely dry. and or suitable temperature 10 be mixed with the asphaltic ce- ment From the boot the stone is elevated into the air by an electric power driven elevator. and from the top of the elevator is shot down into 2 screen which revolves over large bin. The screen is designed to segre- gate the various sizes of stone into commandments underneath. Under the bin. on what is known as the mixing platform. is a large scale and bucket The mixer man on the platform draws the. various sizes of rock. according 10 the proportions required. into this bucket. the quantity being determined accurately by weight. When suffi-