Arizona republican., 1907-02-20
UP HISTORY skY-scRSP<R IS Ss
 SECONDS BY ELEVATOR.
Tower Tenants of Ns~ siesss asits- ing to Reach ard Lssss Tssiy Eyris Offices by asssrs s4 tss Safest and Most Rs-~srsssis
 Cars Ever canssrSsts&

New York. Feb. 20.-An iRtersstin.
 chapter in the construction og the new
 sky-scraper WOnder-she Si-story Sin
 ger building at BrO13HsJ and Liberty
 sreet-has just been coaclOsisd with 70
 series of tests made hY Architect Ern-
 est Flagg and staff of snxine-rs 70 ts- itesrmine Ine absoIuts safety of th.,
 massive elevators iO ee installsi. The tests are pronounced satisfactory in every detail.
 | or the fifteen elevators 10 @ into the wonderful structure. four will aC- tually scale the Sl2-fOOt tower. a f5a- without a parallel or precedent in e-s- vatOr building. Not Only Nil they cCsl- vey passengers to and from the eyre offices without a relay. but. what is even more astonishing. they Eil each rise or descend q stories in less than 60 seconds. This is faster than any r.- evatOr ever ran on schedule. and ea-h
 car is guaranteed tO run ss ESifJly.
 safety and evenly with a fGu load .s with one passenger.
 Heretofore the most improved ns- draUlic elevators have always operated
 more slOwly-Often stallinx between flOors-when crowded. But ths Otis traction elevators. cOnstructe,s fss th- Singer building. are so powerful tsar each has maximum capacity oF .s1a 1 lbs, or approximately 25 persons. WA-n the Singer building was first projectet, the elevator problem was the hardssE to be solved. Contractors. engineers
 and architects almost unanimously agreed that such a giant tower, in fact. was not feasible and could never t-
 built In reply to such critics. and &s
 a tribute to the care and forethoughs of the concern, the Singer company has ordered temporary elevators installed at once. This has never before been done in constructing an office building and it will cost many thousand dollars "a fortune well expended In thst is
 will afford workmen on the tower tAe same protection that tenants will have. That elevators suitable for such Q lofty journey are not built in a day iz attested by the expenditure of several thousand dollars experimenting in sa- l ticipation Of the new era in sky-scrs- | per construction which this building marks. over 100 men have been eEn-
 ployed in the task besides a congress Of consulting engineers As it was ae- cessary to reach a height some so ssu- ries above the present skyline of Sess York, an entirely new system v=s iEH-
 perative. and the one Co be intrO5ucs1
 in the Singer building is the result How, it will be asked. is the absolute
 safety of passengers guaranteed. So
 enc has ever been elevated is sr .o sto-
 ries above ground but has aaxisGsly
 asked this question. and the fojisSin< reply is necessarily more interesting tO one ascending twice as far.
 Each car. made Of copper, erttrfhic steel and special forged steel. win 6s
 supported by wrought Iron saa sSe-l safety frames and girders t0 EAtch tss ! lifting cables are attached. This frame will be provided underneath u9sa an improved dOuble-actins we,iEs clamp safety device. Should the car exoer1 predetermined speed ia either tlrrc- ton it will slowly but surely and se- curely be clamped Co the guides. feg- cry car is equipped with an emergency lever enabling the operator to bring
 them to rest In a fraction of a second.
 and al the same time with no dlsa- greeable or alarming jar. An eiectri- cally operated brake Is provided as an
 auxiliary for safety. This is brought into action either by opening an inte- pendent switch in the car or on failure of the electric current fIOm any cause Special oil-cushloned buffers are % ar ranged at the top and bottom of every shaft that the car Is brought 10 a grad ual positive stO| at the extreme limits | Of travel beyond the terminal landing. | The es tons of steel and copper used i in these remarkable elevators has an
 been made by special analysis. The tower elevator expresses will run 18 stories in 3o seconds without a stop. or about One-hsli Of the time required
 by the best express elevators Co travel | F stories today.