Pumping Stations. 



147 



q) 



Date of erection . . 

 Number of wheels 

 Dia. of wheels in feet . . 

 Width in feet 



Total width 



Number of scoops 

 Internal diameter, feet 

 Dia. of circle to which! 



scoops are tangents in 



feet . . , . . . . . I 

 Numbei of revs, per min. 

 Velocity of periphery in 



feet per second . . 

 Weight of each wheel in 



tons 



Average dip of wheels in 



feet 



Lift in feet 



Total discharge in tons'! 



per minute . . . . j 



Description of engine . . 



W.H.P 



Ratio of speed of engine 

 to wheel 



Ratio of W.H.P. \Q\ 

 I.H.P. percent. -./ 



Days of 24 hours work- 

 ing I year . , 



Pressure of steam in lbs.i 

 per square inch . . . . J 



Cylinder dia. in feet . . 



Length of stroke . . 



Number of boilers 



Size of boileis in feet . . 



Coal used in lbs. per\ 

 W.H.P. per hour . . j" 



Cost of machinery in £ 



Do. per W.H.P 



Do. buildings \Ti £ 



Per W.H.P. .. .. .. 



Do. total do 



Halfw eg. 



Katwijk. 



1852 



6 

 21*64 

 6-56 



39*36 



24 

 11*84 



5*70 



4I 

 5*00 



15 



4'6o 



1*64 to 2*62 



1037 



single-cylinder 



horizontal 



condensing 



123 



13*5 to 6 'oo 



50, average 1 

 3 years, 

 1853-56 1 



45 



3'36 

 8*00 



3 

 28*0 X 5*50 



5*50 



4845 



39*39 



7896 



64*20 

 103*59 



1880 

 6 

 29*50 



8*00 

 48*00 



io"5o 



4I 

 6*17 



43 



5*66 



o to 7*00 



2000 



2 compound 



horizontal 



condensing 



370 



36 to 4 



/33 to 70, 

 \ mean 50 



} 



60 



80 



2 'GO and 3 'GO 



4*25 



8 



32*66 X 7*31 



7*71 



14,200 



23*66 



15,100 



25-16 



48*82 



Spaarndam. 



1845 

 ID 

 17*05 



68*42 



1869 



2- cylinder 



horizontal 



condensing 



280 



3 to I 



Gouda. 



3*02 



5*16 



4 



37*72x5*40 



II '00 



1857 



6 



26*00 



5*75 



34*50 

 12 



ii*i6 



4 



5*44 



4* 16 



4'Oto 6*0 



1053 



horizontal 

 condensing 



240 



4 to I 



81*97 



65 



3*oo 



5*25 



3 



rings of cast iron, with, spokes connecting the rings to an iron nave. 

 These rings are cast in two segments and bolted together, and to 

 them are attached cast-iron start-posts, and on these twenty-four flat 

 wooden scoops are attached. The consumption of coal has been 

 found to vary very considerably as the lift is altered, owing to the 

 large proportional absorption of power at the low lifts required 



L 2 



