' mlo WOO lb In four model*, TkCT hydnulfo K(tfn tnd bw^..^ drive inclloQ uiUt are baufrtj through *erite-wound electric JijSSj All eontroU, lure iped, IcJSjS reverse, railing and lowering, hpjftSt, and key tHteh. are mourned Iq \Dg*hadl* bewL Therefore UltW '^3 can he raiaed or lowered *hcntri^^5 motion without moving it, S&J* handle.

I'm: 1948 Listing of Typical Central-Statl b/!

f 630pit, 750F trpdvtfof Uo^bSOfiOo 2SU.: D""g aV:,,/, . m,u v . machines use da motors.

The almpleat. aoreat meobaaUat over devlaed for holding wheels to abaft*.

SEARCHLIGHT SECTION 314 SEARCHLIGHT SECTIOH SLIP RING MOTORS t*t. 400 100 ISO ISO ISO 100 100 100 15 75 75 75 10 40 flip rliq Matan tefcolli Mete Up* Ipserf DtutlpUaa ci.

TECHNICAL BRIEFS S Offals la you on: GAS TURBINES , ,, latest engineering developments ter busy power men FUELS AND FIRING For shaft speeds to 1750 RPM Johns-Manville Centripac seals better Flume con bo itabillicd by. swirl vonn or |et ImpIngcmM around tKa tube of gai turbine combuttor ihown et (rft Start-up data in graph shown above cover* 3-fn(IUon U] experience on reheat boilers with no ipeclal diiflcvlllot ] Let's Look at Gas Turbine Combustion Problems Some .Practical Aspects of Combustion in the Oat Turbine.

Et hyl Gasol ine Corporat ion Tul sa Division Na t iona l Ba nk of Tul sa Buil ding Louis W.

AluminumOnGomjmnu, December 6, 1948 Dr.

f May 5, 1948 Mr.

CO P Y CLIFFORD W.

OFFICIAL CORRESPONDENCE SH OULD BE ADDRESSED TO TH E DEPUTY COMMISSIONER JMMISSIOKERS J EWELL W.

THEASSOCIATED ETHYL COMPANYLIMITED ___________ . . .

December 9 19*& Hr.

UNIVERSITY OF MICHIGAN SCHOOL OF PUBLIC HEALTH ANN ARBOR.

* DR.