. Railway age . Per I Work V Load, ; mile <-ton-mlle8-, ned. tons Total Con- Con- No. of loi-omo- per lon- sump-Sav-sump Sar- locomo- five- Effect, ton 1 eff. sumpfn tlon, Ing, tlon. jnetlve. miles, miles, miles, mile. In lbs. lbs. %. lbs. <<■. Boiler. Scptem 1,611 1,136 131 115 .... 62» ... 1~4756 1,657 1,091 140 128 78,980 .... 564 .... = So total 3,268 271 ... 161,410 777 777 777 777 1=^5 Ave 1,634 1,113 135 122 80,705 .... 595 .... Ji ~ 4754 1,737 1,264 137 108 62,222 454 23J8 Brotan October. 4743 026 105 114
. Railway age . Per I Work V Load, ; mile <-ton-mlle8-, ned. tons Total Con- Con- No. of loi-omo- per lon- sump-Sav-sump Sar- locomo- five- Effect, ton 1 eff. sumpfn tlon, Ing, tlon. jnetlve. miles, miles, miles, mile. In lbs. lbs. %. lbs. <<■. Boiler. Scptem 1,611 1,136 131 115 .... 62» ... 1~4756 1,657 1,091 140 128 78,980 .... 564 .... = So total 3,268 271 ... 161,410 777 777 777 777 1=^5 Ave 1,634 1,113 135 122 80,705 .... 595 .... Ji ~ 4754 1,737 1,264 137 108 62,222 454 23J8 Brotan October. 4743 026 105 114 .... 712 .... 1 4752 914 103 113 67,602 .... 656 .... E . 4753 1,389 932 109 117 76,830 .... 705 .... =ife4756 1,806 1,257 140 111 101,028 722 .... [ =P= Total 5,851 457 ... 320,238 777 77 777 777 I ~ -^•< 2,925 1,007 113 114 80,059 .... 699 .... I 4754 1,126 122 108 563 19^ Brotan The Brotan patent is held by the Deutsch-Oesterrelchlsche-Maa-. Asnpan S^cflon C-D. Section E-F. Expansion of Tubes Into Bottom Pipe and Collector. nesmann-Rohren-Werke of Diisseldorf, Germany. It supplies the de-signs for the flrebox and sells the rights to use the patent. Themachines themselves have been built by various locomotive shopson the Continent. Owing to the high duty on steel tubing In the 214 THE RAILROAD GAZETTE. Vol XLIV., So. JJingley tarill law il would not i)erbapii be profitable (or proiipectiveAmericaii builders of the uew boiler to Import their tubes fromGermany. Consumption of Poles In 1906. The following Information Is taken from Circular 137, UnitedStates Department of Agriculture, Forest Service; The Information In this circular concerning the consumption ofpoles during 190C Is based upon the number of polea purchased ratherthan the actual number produced during the year. It seems safe toasHunie, however, that the two were practically identical. Inquirieswere sent out to more than 0,000 compunleB operating t
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