Document 3er1OZ9xO9010Zk94JOMRVRKD

UNIT PILOT VALVE MAKES HECKLE? REGULATORS EASIER TO SERVICE AND MAINTAIN Her* i* unique KeekUy (tort that meant tf conven ience and uvingi for you. Thi pilot *alv tin b# fnod ai a unit. Thu meant uy Impaction, maintv nanca or replacement in a few minute* time. No bother whh Mparaia parts--cornu' out a* Mtily aa tha (park plug in your ear. All othar part* of thi* valve are readily accc**ibU tool All wearing paru ara made of tough, tong wearing, corrosion reaiatant stainless ateei, further lowering upkeep. More BOOKSHELF --------------`rf PK,.icv Recent tlevelctn^u 'Sffl oi heat transfer are Tviewd. conduction of heal In gaies^l/^S fer, eoodttotlon In aolldt and and natural convection, simultaneous phase change irlcal nd other type model Q * Heat flow Is treated at ,n a~ transport process in which 12 physical charactorlttka of sembly may be transferred fmiSs point by movement of eerufo-Vv Significance, Nmfutioos and valaftE logics between heat flow, chemical diffusion and electric c discussed. Chark into the Keckley line of PRBCt- SION PRESSURE REGULATORS. Sire* Vtn to 6"--prruure to 500 Ibt- rteatn, 600 the. air reduced to a low.of I lb. Variou* combination* for pressure end temperature contraL Ad our rrprrten- tative, your industrial 'distributor or write. 'ik a Itaat VttWet a Pip UHtf Voirat * Pressure Begeteteri a Strainers g T*aiarat7e tegaleleri g le*et CeetftlteM g ft Ml B** Dlephrev* Velvet SEND FOR COPY OF COMPLETE- CATALOO S3A. O.c. KECKLEY COMPANY 400 W. MADISON StREET CHICAGO 6. IIUNOIS TAKE A TIP FROM THE LEADERS Install VI king FUEL AND LUBE OIL PUMPS The use of Viking Ro- lory Pumpt by mony of the leodori in the In. duitrial fields is your as- surance of depondoble, efficient pumping. FOR THE JOB REQUIRING . FtC. 212 GfAB DRIVE' Foil, self priming . . . Capacities V> to 1050 gpm . . . Smooth, even flow . . . Pressures to 200 psi. . . Handling oil types of Petroleum products from LP-gas to fuel oils, lube oils and rars, there you will find Vikings sped* fied ond successfully'used. Ask lot folder 3J5W todoj. It's your tip lor good, efficient pumping. Vikinq Pump Company Cedar Foils. Iowa ftrvomschonlsm Anolysl*. y/pTM edition). By G J Thaltt. out trlcal engineering, IJ $ Novel tune School, ond fl C Brat**, smtfSifl engr. General Metort Cerp. fiVirfUrfl pp, many jigs., tohlcs, |7J0. WfCrSfl Booh Co, 330 (Test 42nA Strut. JfyJ 36. N. Y. >S8 Written for electrics! englaterfifl! dents in senior and gradaste eettritCu book reviews the bssie prinelpWt$fja cepts of servantcehenUm cptrnJesTSw Inirodnetlan to the design tad uHp" aerromeehanlsm aystems. One eWytin ers relay seryomechanlama beetuH'Sg growing Importance. jBH Another chapter li devoted to tJSj locus method which* ptovidei s critj method of calculating transieet' iSa from the transfcr*functlon equ*llog the concept of pole and sero eonfipu seems to offer prombe for future'dr ments in analysis and design o( ifWw An Interesting feature of (he h&tfi the 67 pp of appendices which Mrer(tj ileal equipment used In servo itaw These include: potentiometer Are You Putting Up tiansformers, synchro genmton, *-1' motors, differential units, Uqfc bridges, tcmperaturc.and pressun det^j pH detectors, controllers, lervoooieri^g This penialing devices, "-tM Turbines, Cendertsera, ond AuiUw nfu^gj." [yffanTthh sign up lust onto la too Pood-Wafer Heaters, Cvaperaferma ^Jfoat of the time it moans a costly Oeoerdters. (1950). A report by Jgt*down, idlo workmen, dolayod bines ond Condensers Subeommiutt jlH induction, vary often caused by the Prime Movers Committee, 8\4xlfH!//,r Lb^raMiif such a low-cost, but ex- paper, 23 figs, )3 tablet, $IJ0 to * 3330 to noa-memben domestic. Electric Fiutidite, 420 Lexington aw.'* York 17, N. Y. jS A report containing sutcmenti fj eilttg companies and rnsnubcWf equipment listed la the title. ' If data on turbine operating esperl^j, outages.' included ere dsta on [wly vtfai item os portable cords. P^^Hubber scientists have engi- S. Royal Portable Cords ItjijjSgCableA t~o g"ivVe tWh.eS longest rpTMoalEg^lj/eiaonmdij durability. The flexible -jJjwtore pro insulated with a high- i^R'.rubber compound, and the ffl&Jrtor assembly is protected by Sign Too Often? 60% Neoprene jacket vulcanized in lead -- thereby assuring maximum density and ruggedness. Rubber fillers ore used in all portable cobles, and atao in tho larger sizes of tho portabio cords! In all cases, tho Neo-' prone jacket is reinforced internally with a strong fibrous braid. U. S. Royal Portable Cordt ond Cables have extra efficiency and strength that make them ideal for uso on portable electric machinery, tools, lamps, electric aanderu and polishers, railroad equipment, and wherever a tough flexible cord is required. Remember that United States Rubber Company is the only manu facturer of electrical wire and cable to grow Its own natural rubber and make ite own synthetic rubber ond plastics. That's why "U. 8." gives you a quality controlled product. Write to address below for your free copy of our general catalog on elec trical wires and cobles. unacheduled outages of major pI4D,;J' nir.nl. 3 Topics discussed in lb report te'ffjj conditions for now units, prele^V ards uillUatloB, eicUatlon installations, quick starting of lurbiMV, Hied states rubber company enter field preheating, hydret jjjjm opersliun, supervisory instrument*. .. wyl geata, troubles, governors, n^ ^ overhaul practice*. Electrical Wire and Cable Department Rockefeller Confer. Now York 20, Now York <953