Document R2BEV1Kk71J6mpkRwo9xr5RYE

II if ! b- H .; } i i e More PRACTICAL IDEAS. Foot Repair Saves Shutdown . 1 was calico ouc one early morning 10 repair the 14x16 hoisting engine. It hoists coal from lower section to a1'dis tribution center. Major output of mine depended on this engine. Valve-gear link was broken on one side, top sketch. Ii was cast-iron, and we couldn't weld or braze it. Assent* bling alt pieces with block in place, we measured centers of holes in Mock and lug link, which connects to fork (double eye) of eccentric rod. I cut two pieces ol %xlVfe'in. steel, ground ends to fit heel inside of valve* spindle fork. I drilled two %-in. holes r mw 'V** in each pioce to centers of block and to link's lug, top right sketch. While this was going on one man took off the eccentric strap and the rod on re* versing the eccentric to prevent il from Hopping about as it was discon* nected from vslvo spindle. After drilling correct centers in % in. t 1% in. pieces, il was quick work to connect, eccentric rod to fork (double eye) of valve spindle. A quick check of valve setting proved no further adjustment was needed so we started engine. We could still reverse engine oh other undamaged side, provid* ing crank was off center. Hut this wasn't important because weight of coal pro* vided momentum down grade. About 350 men were going to return home because of broken engine. But this repair prevented a shut down. Engine continued to operate on this mokeshifi valve connection until a new hraas link wsa delivered* We installed il at leisure on a weekend. V Strajic Glace Bay, Canada Why Wouldn't Engine. Driven Pump Start? Our pump'jiousi has a littfe emergency pump driven by t 6-cyll|J!!l gasoline. engine. We start this once a week, to be sure U'W run if nc2i2f.-I Pump gave trouble one week, iwf finally started. 1 stopped and uartei fiy several times, but there was sig^f trouble. It didn't start first time week. Engine has conventions!I cri'okj ing motor and Bendix assembly; wg fs energised by a relay operated1 start button on control panel. When I pressed start button, Ml<4, was a POK-like noise, and that vu Contacts on starting motor relay OK. 1 had visions of pulling < motor ond Bendix assembly til] \ il agnin, watching closely this tbe!<^ POK again. I noticed the crsnkiai^ motor worked all right, but somethiai I eeemed to be holding engine fIrotnW turning. 1 asked mechanic if He noticed anything unusual Sn its op linn during post few weeks. "No, except 1 have to add a 1 water to the radiator each week," .._ replied. Thai was enough (or me. JI started pulling plugs. Sure enough^ one cylinder had water in it. We f later that a slight Haw in block (. ably o sand hole in casting) allowed^ cooling water to leak into cylinder. enough water leaked to cause noticeable*; change in operation. But with engine* shut down for a week, enough witer leaked In to keep her from turning overj unlil.it worked out. Eo Eckert New York, N. Y. HAVE YOU PROBLEMS OF: CORROSION? FEED WATER HEATING? DEAERATION? i^CiU Cochrane. Whether your plant is large or small, the * $ unbiased recommendations of Cochrane Engineers will iijure the correct selection of equipment for your particular Kjrj^ operating conditions. As specialists in the field of ^^aeration, Cochrane originated the jet tray and atomizing principles and designs and manufactures all types of &1` Deaerating equipment--Tray, Jet Tray, Atomizer or v>vV;. s' ^ Spray, and Surface--in all sizes, all materials. #. 90. years of specialized experience in water conditioning Call* Snub Pulsating Gage BtARtKc oil, registered on pressure gage on our big turbine-generator, pulsated. Cause was gear*(ype main oil-pump, driven from turbine shaft. Pulsations were of about three pounds' magnitude, not enough to prevent an average read ing, but frequency would cause rapid wear on gage mechanism. Throttling or snubbing with petcock was not possible because when it was snubbed enough to slop pulsations, it would shut off entirely. Cage was connected to oil line by a straight run of 1/16-Lu. copper tubing as shown by dotted lines, in sketch. We replaced this with a longer piece having a coil of five turns. Winding, on a 2-in. mandrel, was supported to give the coil free play. Coil absorbed pulsolioni and gave a steady gage with a cock wide open. We were afraid to use a small orifice that might clog with dirt. We had no exact rule for the number of turns and used the cut-and*try proc ess. 11 turns In coil are too many or too few, pulsations will continue. Best way is to test colls for pulsetions after adding each turn. Then stop coiling when pulsation stops. A H Moulton Pittsfield, Mass. Ammonia rufftyr are at your service when you call a Cochrane Engineer. Write for the address of our office nearest you. We'll be happy to discuss your requirements without obligation. Ip^corp. 3106 N. 17th Street, Philadelphia 32, Pa. Dumping Ammonia Safely offices in 29 principal cifies Skktcu shows a successful method of i1 I.; I* Cmadat Canadian Ouneral ElocrrU Co* lid., Toronto dumping liquid ammonia directly in10-' ' Sabcocti A WUcox do Mailco, S. A.. Moxfco Ofy the eewer. To make a harmless solution- c |v'*V ** *vP8ratlon Thornlquo g Epvratlon, Peril 2000 lb of ammonia would require -w Ir.'.-i Cofcoi latirortca L Donlol, to., Havana about 40,000 ib of water. rf- '.J fMHi A marital Survklot Etotrtta*. C.A. tS.f.CA.) Coratai, Vonotuola M E Evans Chicago, M- [Continued on page 129) tuorto llcoi F. A. Orll* A Cov San Aian S .{4 ^`0 ,vAASS...136 7UNT OniMION AND MAIHTfNAMCB MCHOH pOWtM L< tuuwi MUStmOWwSiv'11 uAi-lnlA*'M IpOMB jjt NOVEMBER 1953 127