M1CET Trade Mark

UNPOLYMERIZED

VINYL ACETATE

(STABILIZED)

C H 2 Ο II / CHO—C

\

B o i l i n g R a n g e 71.8° l o 73°C

Vinyl Acetate can be polymerized to form res­ins with exceptional bonding qualities for wood, glass, metal and fibre.

Vinyl Acetate can be used for synthesis of a-b-di-chloroethyl acetate, b-monochlor ethyl acetate, b-chloro acetals, 2-amino-thiazole, chloroacetalde-hyde and many others.

Containers' —

410 lb. drums 62,500 lb. tank cars

For further information write to:

Jfecv czwtffcmeitt Law Temperature Control

Close control of low-temperature proc­essing is said to have been made possible by a low-range radiation pyrometer de­veloped by the Brown Instrument Co., Philadelphia 44, Pa. Especially useful where the measuring instrument does not or can not come into contact with mate­rials or processing equipment, it is recom­mended for dairy and other food fields.

Comparative sise of pyrometer parts Tests were carried out in rubber and plas­tic mills and in continuous curing ovens and paint pigment kilns.

The pyrometer includes a low-range radiation-sensitive head designed for opti­mum operation a t temperatures under 1,000 ° F. ; a control box which controls the temperature of the head, and the reference junction of the temperature of the thermo­pile, at approximately 120° F.; and an electronic recorder, with control features if desired. The system is claimed to re­spond to temperature changes of 1 ° or 2° F . within the span of ambient temperature to 212° F. I t is offered as an uncalibrated unit only.

Steam-Jacketed Flow Meter

The Fischer <fc Porter Co., Hatboro, Pa., announces a steam jacketed Flow-rator instrument for materials having high melting points such as molten sulfur, naphthalene, and phosphorus. Remote totalization, recording, and control of the flow rate is available. Flow indica­tion is also provided at the primary ele­ment. The indicating extension is fur­nished with steam heating coils and the entire meter body is jacketed for 100 p.s.i. steam gage pressure to ensure that the material metered remains in the liquid phase in all parts of the instrument.

Heating and Cooling System,

Regular production has begun on porta­ble units of a self-contained Dow therm heating and cooling system a t Blaw-Enox Co., Blawnox, Pa. The system consists of one 100,000-B.t.u. per hour electrovapor generator; one 100-gal. surge tank; one 50-square foot cooler; one cooling pump for circulation of the liquid Dowtherm; one complete charge of Dowtherm "A."

heat transfer fluid; and the instrumenta­tion and framework including the control panel.

During the heating cycle, the Dowtherm fluid is vaporized by the action of a 30-kw. electric immersion heater with an explosion resistant terminal cover. De­sign working pressure for the vapor genera­tor i s 60 p.s.i. During cooling liquid Dowtherm is withdrawn from the surge tank, forced by the cooling pump through the cooler, then through the customer's piping arrangement and vessel, jacket, or coil, and then back to the upper inlet fit-. ting of the surge tank. The surge tank has capacity adequate to contain all of the Dowtherm fluid, thereby permitting re­moval of fluid from other vessels for pur­poses of inspection.

Alloy Scales J or Quantometer

Applied Research Laboratories, 4336 San Fernando Rd., Glendale, Calif., have developed a recording system to be applied to their direct-reading instrument for

speetrochemical analysis, the Quantom-etcr. The system, which employs remova­ble plastic panels fitted with direct-reading scales for each element being determined, allows panels to be made up for each type of alloy. The instrument can be set up for the analysis of any alloy of a certain base metal in a few minutes.

Calorimeter Evaluations of color differences can be

made rapidly and precisely by means of its photoelectric tristimulus colorimeter which measures color on three scales, Henry A. Gardner Laboratory, Inc., 4723 Elm. St., Bethesda 14, Md., states. Photo­cell windows and measuring circuits have been selected so that the three values of color are read directly from 10-turn po­tentiometer rheostats. These three rheo­stats may be set to the values of some standard color and a specimen of similar color then placed in exposure position. As a selector switch is turned to each of three positions, deflection of the current-deflecting galvanometer shows the magni-

1306 C H E M I C A L A M D E N G I N E E R I N G N E W S

ιν • A r/rc,« Sol»i ÔWlt.a

921 Niagara Building 'N iagara Falls, Ν. Υ.

tude on that scale of the color difference between the specimen and the standard.

Bloom Gelometer An instrument for determining the jelly

strength of glue is being manufactured by the Precision Sci­entific Co., Chi­cago 47, 111. Orig­inally developed for determining the the jelly strength of food products, it has also been found applicable to the routine testing of certain paints. The principle of opera­tion is the lowering of a plunger a pre­

determined distance (usually 4 mm.) into the jelly. The force applied to the plunger to drive it against the resistance of the jelly, a direct measure of the jelly strength of the material, is reported in grams.

Moisture Indicator To widen the range of usefulness of its

moisture tellers, the Harry W. Dietert Co., Detroit 4, Mich., has developed a model for light bulky materials. I t is equipped with a 12-inch-deep sample pan which will accommodate large samples of wool, fibers, cloth, and similar materials. Special construction of the pan prevents excessive heat loss and measures uniform temperatures throughout the sample.

Samples of wool fiber of 300 grams weight are said to be dried in 15 minutes without damage. The temperature is con­trolled by means of a thermostat in the range of 125° to 300° F .

Chemical Motor A gear motor and a corrosion-resisting

chemical motor, developed to meet diffi­cult machinery-drive problems, are being produced in a joint, cooperative endeavor by the Reliance Electric & Engineering Co., Cleveland 10, Ohio, and Philadelphia Gear Works, Inc., Philadelphia 34, Pa. Both companies will sell the finished prod­uct.

Sampling Bottle Cage A sampling cage which will hold a 32-

ounce sampling bottle and can be used for obtaining spot or running samples through an opening of 47/8 inches or larger was de­signed by Vapor Recovery Systems Co., 2820 North Alameda St., Compton, Calif., for use with its gastight gaging and sam­pling unit on low-pressure vessels in lieu of a pressure-type sampling bomb. Operation consists of lowering the cage to the desired level and uncorking the bottle by means of the tape or chain.

(Continued on page 1326)

THE CARVER LABORATORY

P R E S S

This : powerful press is justwh<at every laboratory needs for re­

search ond development work. Staradard Accessories include Electric

or Steam Hot Plates, Carver Test -Cylinders, Swivel Bearing Plates,

Cage Equipment, etc. This equipment has long been accepted as

standard for making quick, accurarte small-scale tests; for develop­

ment, research and instruction work;: testing single cavity molds; prep­

aration of samples, and even for sxnall scale production. Accurately

controlled pressures to 20,000 lbs. Self-contained hydraulic units, with

6" gauge rigidly mounted on base. Special gauges available for low

pressure work.

rfSSË&t

FRED S. CARVER INC. HYDRAULIC EQUIPMENT

347A HUDSON ST. INEW YORK 14, Ν . Υ .

Standard Equipment available -from stock · send for Catalog,

V O L U M E 2 6, N O . 1 8 M A Y 3, 1 9 4 . 8 1 3 0 7

StcuuCr-tcC iox 7<e4ecvtch and o>e<Ael&ft*He*tt

E Q U I P M E N T îtoaU . PROCESS, MAINTENANCE, AND AUXIL IARY

EQUIPMENT, FOR THE PLANT AND LABORA­

TORY IN T H E CHEMICAL PROCESS INDUSTRIES

FLASH-O-LENS SPOTLIGIirS as it MAGNIFIES ! Chemists,ens*neers, and technicians

-throusKout industry — use Flash-••Lensfor inspection work.

It's portable— -with microscopic ac­curacy and complete illumination. Plus-in an<d battery models available with 5 o r 7 power lens. Specially desisned Kousins allows interchansins of lenses. Priceci from $9.35.

Send for free illustrated price catalog.

E l i f D Ι Ι / Γ φ P f l 490 North A v e n u · . I f - r ΐ Π ί « l l l l . Elixabeth 3 , N. J .

Measure WEAR RESI STANCE of RUBBER ^ * - ^ . -

FABRIC -3 PAPER | LEATHER Λ

PAINTS LACQUERS ELECTROPLATE

dM Ν „ W ^ V x A klSt rubbing i b r a » i o n

j££-^ Wr i îç f o r new l i terature.

TABER INSTRUMENT CORP. 122 Goundry 5t. , N o , T o n a w a n d a , Ν . Υ .

F O R SiULE-New variable speed tremmission, 2 HP. Per­mits continuous regulationoF the output revolu­tions from 0 to 3 0 pee· cent in either direction. Shipping weight, 25 lbs, Priced at $14.80 F.O.B. Norman, Ok ie .

ENGINEERING RESEARCH LABORATORIES

520 South Blvd. Norman, Okie.

IJSEI* KCtUUFMENT FOR SALE: Surface condenser, copper tubes, Everdur shell,tube sh«elland expansion joint, steel weter box, 4-p>a« countercurrent water and vapor flow, 234» sq, Ft. surface, $2,250 or best offer F.O.B- Cincinnati. Available immedietely.

Box 903-J-4,Chem. «En?- News, Easton, Pa.

In addition to our fine analytical filterpapers we furnish

Special Filterpapers fx>r the Chemical Process Industriel

Write for Bulletin. No. 66-C Giving Data on Your Requirements SCK1EICHER A SCHUELL CO.

116 Wast 14th St. New York 1 1 , Ν. Υ .

N e w E q u i p m e n t (Continued from page ISO?)

Explosion-Proof Light An explosion-proof lighting fixture for

use during manufacturing operations in the chemical, paint, petroleum, and re­lated industries is in production by Safe Lighting, Inc., 90-16 Astoria Blvd., Jackson Heights, L. Ι., Ν. Υ. It is rated for use in flammable and explosive atmos­pheres containing acetylene and those containing hydrogen or similarly hazard­ous gases and vapors.

Speed Reducers Motorized speed reducers in *•/*- and

1/3-hp. capacities are being manufactured by the Ohio Gear Co., 1312 East 179th St., Cleveland, Ohio, with other capacities

• to be available soon. Ratios are from 5:1 to 72:1; output, from 317 to 24 r.p.m. Capacitor type or three-phase type gen­eral purpose motors are available.

Germicidal Lamp A 25~watt germicidal lamp claimed to

emit more than twice as much ultraviolet radiation as any lamp heretofore available has been developed by engineers of the Westinghouse Electric Corp., Pittsburgh 30, Pa. The electrical characteristics of the 36-inch lamp include starterless opera­tion, and operation in any position and down to freezing temperatures.

Drafting Template IDetailer templates made by Rapidesign,

Inc., P. O. Box 592, Glendale, Calif.,

contains commonly used plan and side view nuts, bolts, and screws. Actual size is 10 inches long.

For all Chemical Processing Industries

TAILOR MADE TO FIT YOUR INDIVIDUAL PRESSES

Our Roll Goods Division Invites Inquiries

FILTER FABRICS, Inc. 1255 West 4th St., Cleveland 1 3 , Ohio

FMC Your First Source for GOOD EQUIPMENT!

• Large stock on hand, in New York and on Location.

• Complete Listings of all Company availables.

• Complete Listings of all War Assets in our field.

• Consultation on Production Methods with equipment suggested in each process.

• Complete Library of Catalogs of most processing equipment now being made.

• Quick service by wire, phone and air mail.

F I R S T M A C H I N E R Y CORP. 157 Hudson St. New York 13, Ν. Υ.

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1326 C H E M I C A L A N D E N G I N E E R I N G N E W S