890 



ni:rouT — 1884. 



The pi-esent paper will Lc mainly devoted to American practice in piimpiiifr 

 machinery, it beinj^ assumed tliat the best work of the leadinpr enfrfm-ers of (iiciit 

 Britain and the Continent (in this special department of mechanical construction) 

 has been previously descri])ed in papers read before tiie Association. 



Amonf^tho earliest examples of pumping machinery used in the United States 

 were the water-works enjrines n1 Philadelphia, which were put in operation be- 

 tween the years 1801 and It^OJJ. 



rroi,'re3S in water-works pumping machinery since the Fairmount works were 

 commenced has been rapid, 



Amonp the cities whose pumpinjr machinery is worthy of mention here, either 

 from peculiarities of construction or its {.Teat capacity, may be mentioned .Mdntvenl 

 and Toronto, Canada; iJoston, Ijowell, Lynn, and Lawrence in .Massachusetts; 

 Providence and I'awtuckct in Rhode Island ; JJrooklyn, liuffiilo, and Saratofca, 

 New York; Jersey City, New Jersey, Philadelphia, and Pittsburgh, Pennsylvania; 

 Cincinnati and Cleveland, Ohio; Louisville, Ky.; St. Louis, Mo.; Cliicafro, 111.; and 

 Detroit, Mich. 



In the cities above named there ■vvill probably be found as great u variety of 

 good, bad, and inditVerent pumping machinery as has ever been collected in an 

 equal number of places anywhere in the world. A brief description of the most 

 prominent types and peculiarities was then given ; the author dwelling more 

 especially on mine pumping machinery, and direct-acting steam ])umps. 



4. The Anthracite Bamimj Locomotue of America. Bij J. D. Barxett. 



5. On EiiijlixJi [jdCdiiintiue Enginecrimj. 

 T>y A. McDoNNKfj, and J. A. i"\ Asiinam,. 



The paper included carefully tal)ulated statistics of the construction, cost, and 

 performance of the standard types of locomotives running upon the principal 

 English railways. 



A special feature in these statistics was the tabulating of tlie average life in 

 miles of those parts which most frequently require reiu'wal. 



The paper was illustrated by outUne drawings, giving dimensions of the stand- j 

 ard engines of the various railways. 



6. On the "Jonstructiun of Locomotive Engines for the London, Bri'jJdoti, audi 

 South Coad liailwny. Ihj W. Stroudlkv, 



7. On Valve ikar. Dij David .Jov. 



This valve motion was introduced to tlie public by the author in 1>^SQ, in aj 

 paper read before the Institute of Mechanical Engineers at their annual summer j 

 meeting in Barrow, and at that time was a distinct departure in a new direction.! 

 to provide a movement for tlie valves of steam-engines by the direct movement of j 

 the connecting-rod, abandoning the use of excentrics ami the time-honoured Lenlej 

 motion. 



It was first taken up by the London and Niirtli-Western Uailway Company, and j 

 tested by them on an engine built expressly for tlie purpose, and designed by i\lr.| 

 "Webb, their loeomotive engineer-in-chief, for their fast and heavy goods tralKc,j 

 and this engine has been running ever since. 



The essential feature of the g(Mir is that the movement <<1 the valves is accom- 

 plished by the combination of two motions at right angles o eacli other — that is, 

 by employing the direct reciprocating motion of the piston, ar imparted to the cou-l 

 necting-rod, with the vibrating movement of the same rod. Thus a movement isj 

 imparted to the valve which is susceptible of forward and backward motion for thai 

 engine, and for any intermediate degrr of expansion. This motion being also! 



