Document M4ORK9BqM3oqz4wLBRog3Z0zj

alarm. Pointers o! the controls are eel at desired maximum and minimum rates ef Dow and locked with a knob. When rate of flow varies beyond that aet by the pointers, microswitch closes contact and els off an alarm, either e light or audible signal. Device may .be eel to operate when flew rate exeeeds limits of a frac tion of a gallon per minute, or will operate at the wideit range limit. Ilentxey Co, Watertown, Wle. Tube Cleaners 418 Rotojrr, in cuancrs remove scale and other deposits from tubes es small as 0.495 in. inaJde diameter. They are suitable for cleaning beilera, condenser*, evaporators, superheaters, and other tubuler apparatus.. Rotojtt motors ere available for operation with air or water. Motor has only two moving parts, a shaft and paddle, whieh rotate inside an egg-ahaped cylinder. A valve behind the motor gives operator In* stent control of toeL Elliott Co, Roto Dlv, 145 Sussex Ave, Newark 1, N. J. Tin-Content Indicator E411 litmuMCtrr determiofce ratio of lead and tin cement in eolder,,li consists essentially ef a high-resistance pyrometer and dual thermocouple extensions; one with a lead container, the other with o colder scoop. Instrument obtains percentage of tin con tent from the difference in temperature between a pure lead standard* and a leadtin alloy sample, while these materials are passing from liquid to solid phase. Lead ample Is permanently sealed In ena cup, while solder sample to be tested is scooped into the other enp and held there until reading la obtained. Standard seals range is from 0 to 10% tin. Wheeleo Instru ments Co, Hnrrtson 4k PeoHa St, Chi cago 7, 111. When you need specific information on materials or equipment, reach for your Sweet'* Hie for Power Plants (the bi| red file). It contains 119 manufacturers* CBUiogifullofusefbl Information onthou* sands ofproducts. ..from obsoiben--gas, to zeolite. Cross indexing speeds finding. If Sweet's File for Power Plants Is not available In your office, make request Immediately for application form. File* are distributed FIVES to qualified or* ganUatioru end individuals. CATALOG SERVICE hr eosfer, foster ttlottloe of prafccfs It* W. 4Mt ST, KIW VOIK IS, N. T. m (72Tb) Proportioning Pyrometer E422 Moosi IE486 pyrometer proportions carrent input to electrically heated furnaees, ovens, plastic molding machines, salt pots and other similar equipment to provide practically straight-line temperature con trol. It does this by timo modulation of input energy. Average energy supplied is proportional to deviation of temperatore Iron) the control point throughout a bend width, whieh is adjustable from 0 to 2)% full-aeale reading Drislol Co, Watcrbury 91, Conn, Fabrle Conveyor Bell E466 Important nwroars of this new belt In clude maximum tension, almost double that offered by a 48-ox eolton fabric; excellent transverse flexibility assured by the nylon transverse threads; jninlmum stretch In actual operation end steel splicing made easy because of fabrio const ruction. Rein forcement of Raynil$ fabric belts is through use of rayon 'and nylon fabrics bonded to each other. Top cover is securely bonded to carcass by shock-absorbing and dls* tributlog-cord breaker. llewitt-Roblns, Inc, Buffalo 5, N. Y. refined by the Alch lor Process only turbine oil Gulfcrest la the only turbine oil that's Alchlor-processed.* This is an extra refining step. It makes Gul/crest extra pure and extra efficient. In Cylinder I you see the oil that will become Gulfcrest. It has already gone through the usual steps used in refining other turbine oils --but has not yet been -Alchlor-proceased.* - , . .an extra step that In Cylinder 2 you see the fin ished Gulfcrest--the incom parably pure lubricating oil that gives outstanding per formance and helps keep steam turbine systems dean indefinitely. To make it even finer, spedal inhibitors are added to it -- they give it even greater stability and protect against corrosion. removes this In Cylinder 3 you see the part--approximately 15% --discarded by the Alchlor Process.* This is the part that, when allowed to re main in turbine oil, is most likely to oxidize, increase neutralization number, and form sludge, emulsifiers, and harmful acids. in a Gulf Lubrication Engineer today and ask > him to recommend the proper grade of Gulfcrest Oil to meet the specific requirements of your tur>'nes. Write. wire, or phone your nearest Gulf office. Gulf Oil Corporation - Gulf Refining Company. D/vision Safes Offltett Boston Now York Phttodelpbla * Pfllsborgh Atlanta New Orleans - Moaston * loeitvIUe Toledo C4j|fOn Corporation Cal/ Rtfialna Campon* J800 Got? Building, Piinbet|b JO. Pa. WER November 1948* 17$ .