. American engineer and railroad journal . 20 X28 20 % x 28 21 x30 2021 x 28x 26 21 X 2621 x3023 x 30 Below Center of Boiler. Inches. 3 15201717 119 3% 13 4 3% 5 6%5 -Top of Nozzle . Below Minimum andChoke of MaximumStack. Diameter Inches. Inches. 48 16 -17 16 -18%20 -21 17 -1817 -18 53%86%60%61 60%47% 52 62 45 %~138 47% 5554 14 -15%16%-16% 14 -15%16 -18% Height stack , Choke Top above above Center Hniokebox. of Boiler Inches. Inches. 3 81 35%35%4034% 27%36% 26% 39 34%111- 54%47%54 14 -16% 14 -10% 16 -18% 15 -16%1514-18 3636 313231 3%777 123% 14 14 ?2%4% 70%7271%77 657
. American engineer and railroad journal . 20 X28 20 % x 28 21 x30 2021 x 28x 26 21 X 2621 x3023 x 30 Below Center of Boiler. Inches. 3 15201717 119 3% 13 4 3% 5 6%5 -Top of Nozzle . Below Minimum andChoke of MaximumStack. Diameter Inches. Inches. 48 16 -17 16 -18%20 -21 17 -1817 -18 53%86%60%61 60%47% 52 62 45 %~138 47% 5554 14 -15%16%-16% 14 -15%16 -18% Height stack , Choke Top above above Center Hniokebox. of Boiler Inches. Inches. 3 81 35%35%4034% 27%36% 26% 39 34%111- 54%47%54 14 -16% 14 -10% 16 -18% 15 -16%1514-18 3636 313231 3%777 123% 14 14 ?2%4% 70%7271%77 6572 6374 69686614 ~w 66% 67% 20 x 28 21 x 2621 x 2620 x28 14 -16% 14 -16% 16 -17 If. -1S% 3427%31 C33% IS X 26 20 x 26 21 X28 15 1715 -16 :?67* 45 42 39 14 10 5 14 12 6%12 69 3-10651-16 184 AMERICAN ENGINEER AND RAILROAD SUGGESTIONS CONCERNING LOCOMOTIVE ERECTINGSHOPS. By C. H. Quereau. Superintendent of Shops. New York Central& Hudson River Railroad. West Albany. N. Y. Fig. outside to 18^ ins. at the top for passenger engines,and for freight it is 20 ins. as a minimum and 21 ins. as amaximum. The bottom of the stack is flared, trumpet shape, to a radiusof 6 ins. This form of stack has been shown by Mr. J. Snow-den Bell in his paper on Locomotive Front-Ends, read beforethe Western Railway Club, September, 1899, page 25, and il-lustrated by Fig. 19 accompanying. Where these inside stacksare used an extremely low nozzle is also employed, so that thedistance from top of Lhe nozzle to the minimum diameter ofthe stack is 32 ins., and the total height of stack, from choketo top, is as much as 5(1 ins. for passenger and 62 ins. forfreight locomotives. It will be seen, therefore, that somebenefits must have been derived from the use of long stacks,since, in the case of engines which allow but
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