LOCOMOTIVE ENGINE AND RAILWAY GBADIENT8. 



163 



gives 53*87 + 25 rr 78*87 lbs. as the total resistance per 

 ton ; or 5645*6 lbs. as the mean tractive force exerted by 

 the engine in raising a load of .71*6 tons up the Accring- 

 ton incline at the rate of 6*3 1 miles an hour. 



TABLE II. 



GOODS TRAINS. 



Parti culara 

 of leading 



Particulars of 

 a«sl8taat 

 Engine. 



Total heislit 

 of gradients, I 

 and mean 



rate of 

 Inellnatiou. 



Gross wt. 

 of Train, ei- 



cluidv* of 

 Engine and 



Tender, in 

 Tons. 



Time •ecu. 



pied in 

 traTelliug 

 fVomthe 

 bottom to 

 the top of 

 incline. 





•J-O; 



Feb. 13 

 14 

 15 

 18 

 19 

 23 

 March 2 

 April 3 

 4 

 18 



108 

 144 



96 



93 

 120 



96 

 108 



20 

 126 

 138 



Mean. 



111-9 



19 

 21 

 15 

 15 

 17 

 15 

 17 

 20 

 25 

 28 



19-2 



g 



few 



a - 

 5S 



Feb. 13 

 14 

 15 

 16 

 18 

 19 

 20 

 22 

 23 

 25 

 Marchl 8 

 April 3 

 4 

 6 

 8 



108 

 126 

 126 

 108 

 120 

 141 

 132 

 126 

 132 

 96 

 111 

 138 

 138 

 144 





. :d 3 j3 S _. a 



Mean. 



123-9 



12 

 18 

 18 

 16 

 20 

 18 

 25 

 32 

 18 

 20 

 15 

 23 

 25 

 22 

 _25 



20-4 



Bails 

 wet. 



Bails 

 wet. 



Bails'^ 

 wet. 



Bails 

 wet. 



Average duty 

 performed by 

 two Engines 

 = 111-9 tons, 

 at the rate of 

 6*25 miles au 

 hour. Great- 

 est load 171 

 tons, at 5'l.i 

 mis. an hour. 



Average dnty 

 performed by 

 two Engines 

 = 123-» tons, 

 at the rate of 

 5*9 miles ai: 

 hour. Great- 

 est load 144 

 tons, at 4 8 

 mis. anlioor. 



March 5 



7 



8 



27 



132 

 138 

 144 

 120 



25 

 25 

 25 

 22 



Bails 

 slipy- 



Bails 

 wet. 

 Bails 

 slipy- 



Average duty perform- 

 ed by two Engines == 

 133 '5 tons, at the rate 

 of 1-25 miles an hour. 

 Greatest load 144 tons. 

 at 4$ miles an hour. 



Mean. 



133-5 



28-7 



In the above Table it will be observed, that the rate of 

 travelling to the ratio of the load is somewhat variable, as 

 No. 43 engine, with its assistant, performed an increased 

 rate of duty from February 13th to April 8 th, above what 

 it performed from March 5th to the 27 th inclusive, where 

 the rate of travelling, in proportion to the load carried, 

 fell off upwards of a mile an hour. 



