PRODUCTION
NEW
EQUIPMENT
Pressure Β Sowers Pressure blowers that are tailor as sembled for any of a number of per formance requirements have been offered by the Moore Co. / sembled from stand ard parts, a unit of given diameter with from 2 to 9 blades. *iet to the proper angle, can be provided. The rotor to which the wheel is at tached is mounted on two permanently greased and sealed bearings lubricated with Silicone grease. The units can be fabricated in carbon steel, Monel metal, stainless steel, o r any other workable metal available in shert form. Ε 1
Mefallograph Bausch & L o m b Optical C o . has an nounced a new metallograph, which pro vides equipment thnt combines the econ omy of more limited capacity instruments with many of the performance advantages of the most advanced metallographs, it is said. Some of its features: A MagnaViewer screen, stage, microscope, and eyepiece are all in one line, for easy direct observation; adjustment mechanism raises and lowers stage 0.1 mm. p e r revolution of fine adjustment knob; n e w elevating device (patent applied for) eliminates coarse adjustment a n d permits quick in terchange of objectives, retaining focus; a heat-absorbing glass replaces the incon venient and messy water cell. Ε 2
Filter Unit wi+h Permanent Elements A specially designed filter unit has been announced by Titeflex, Inc. Constructed of 316 stainless steel, the n e w unit in cludes one filter chamber of ΙΟ-sq. ft. filter ing area and one of 20-sq. ft. area. Also included is a precoat tank,__and the unit is so constructed that filter chambers can be operated simultaneously with the precoat tank, or singly, as required. Thus a choice of 30-, 20-, or 10-sci- ft. filtration area may be obtained from t h e same unit. T h e unit uses permanent filtering ele ments within t h e chambers and requires no bags, pads, o r sheets. Ε 3
improved Determination O f Carbon b y Combustion Announcement h a s been made of the availability of the Burrell Combustron, new electronic instrument for rapid and accurate determination of carbon by com bustion. It is a compact, bench-mounted selfcontained instrument. This tool 'was de veloped a n d designed by Burrell Corp. with the cooperation of steel chemists and metallurgists. I t employs induction heat ing and has exclusive features which.have
4116
tures. Likewise, low holdup receiver changer and precision receiving burets suitable for either vacuum or atmos pheric distillation are supplied with t h e assembly. Ε 7
For f u r t h e r i n f o r m a t i o n on any item or process mentioned h e r e ,
s e e coupon on p a g e 4120 been incorporated after research in both the laboratory and the field. Some of these features are: instant heating, rapid analy sis, visible combustion, a sturdy Vycor reaction tube, and availability in one or two tube models. Ε 4
Automatic Bunsen Burner W i t h On-Off Flame Control An automatic Bunsen burner that flames only when needed, by touch control, i s now being manufactured by Hanau E n gineering Co.
Counting Rate Meter Radioactive Products, Inc., has an nounced the availability of its recently de veloped model C-2, 3 counting rate meter for use with Geiger tubes. T h e instrument has found useful ap plication in monitor installations where it operates unattended for considerable pe riods of time. Further uses include the recording of x-ray diffraction patterns and other transient phenomena. Ε 5
1-Quart Filter Pump Sethco has announced a filter p u m p known as model LST-10. This filter p u m p is equipped with a high temperature lucite filter cylinder and a stainless steel p u m p , and is rated at 100 gal. per hour. Complete resistance to all electroplating solutions and industrial solutions is claimed for this model. It is reported that solutions up to 200° F. may be used with complete safety. T h e filter cylinder holds less than 1 quart of solution, every drop of which is recoverable. Filter element is a specially processed cotton yarn wound around a stainless steel supporting core. Progress of the filtration can be watched through the transparent lucite cylinder. Ε 6
Miniature Distilling Apparatus Podbielniak, Inc., has announced a new miniature Hyper-Cal laboratory distilling apparatus especially designed for t h e pre cise fractional distillation analysis of small volume samples of gasolines, light oils, fatty acids, and other organic and inor ganic chemicals, and for general labora tory use where highest accuracies are re quired. All instrumentation and controls neces sary for distilling samples from 2 to 200 cc. or more in volume, boiling over t h e temperature range of from —40° to 300° C. and from atmospheric pressure to as low as 2 mm. mercury absolute, are built into a panel assembly. Automatic control of reflux ratio, of dis tillate take-off rate, and of distillation pressure ensure accuracy a n d ease of operation. A potentiometer of special range has been incorporated in t h e unit for ac curate determination of distillate tempera
CHEMICAL
Named Touch-O-Matic, the burner pro duces a full, regulated flame as hand o r finger touches the on-off platform. I n stantly, as the hand is removed, the flame automatically goes out, leaving only a lowburning pilot. For a continuous flame,, the platform is depressed a n d turned slightly. When t h i s is reversed, the flame goes out. Use of t h e on-off platform as a com fortable work-height hand rest, while h e a t ing objects over the flame, eliminates fatigue, as opposed to the tedious, c o n ventional practice of holding the object in midair. Hanau points out. A draft guard, which may b e rotated in any direction, shields the pilot and keeps the main flame burning steadily. Ε 8
T w o Compressors Clark Bros. Co., Inc., of Olean, Ν. Υ., announce a compressor, the Clark H L A . An eight cylinder model of 2,000 b r a k e h p . and a ten cylinder model of 2,500 brake hp. are available. T h e new units, which operate at 300 r.p.m., have a b o r e of 17 inches and a stroke of 19 inches. T h e Clark HLA has vertical p o w e r cylinders in line for maximum accessibility. T h e compressor and scavenging cylinders are in a horizontal position on one s i d e of t h e crankcase. T h e HLA-8 has four compressor cylinders and t h e HLA-10 lias five compressor cylinders. Ε 9
Sampler for Testing A i r Contamination A small instrument for collecting s a m ples of all types of dust, fumes, a n d smoke in the air has been announced by t h e Mine Safety Appliances C o . Air-borne particles are trapped b y electrostatic p r e cipitation as air is drawn through an alu minum collecting tube. T h e tube is t h e n sealed with plastic caps a n d the sample is ready for laboratory analysis. T h e 4-lb. sampling head can be h e l d in the h a n d at any level. I n the h e a d is a blower that provides a constant flow of
AND
ENGINEERING
Ν Ε \Χ/ S
3 eu. ft. of air per minute and the ionizing electrode t h a t charges incoming air-borne particles. T h e aluminum collecting t u b e fits into t h e head around th-e electrode and is g r o u n d e d to attract t h e particles. T h e h e a d is connected to a p o w e r pack by a 12-ft. long high voltage cable. Ε 10
Plasticizing Pan T h e Patterson Foundry & Machine Co. has placed on t h e market a new t y p e of plasticizing pan designed primarily for the p h o s p h a t e fertilizer industry, b u t a p plicable to many types of reduction, re fining, a n d processing work. T h e pan is built in sizes up to 10 ft. As used in the manufacture of triple superphosphate fertilizer t h e crushed rock is fed continuously to this machine which further reduces the material to finer mesh. T h e liquid materials are a d d e d continu ously, a n d the pan, in addition to reducing the particle size of the rock, mixes t h e ground p h o s p h a t e with t h e liquid ingredi ents, plasticizing them and discharging the p r o d u c t through the bottom of t h e pan in form of wads suitable for drying. A belt conveyor carries t h e finished prod uct from t h e p a n to the dryer. Mixing and plasticizing is d o n e by stages. T h e first stage is near the center of t h e p a n w h e r e the material enters, a n d w h e n thoroughly mixed, passes from one c h a m b e r to another where the plasticizing is completed. Ε Π
M e t e r f o r Corrosion and Cathodic-Protection Testing A n e w model, the B - 3 , of the multicombination meter for electrolysis, corro sion a n d cathodic-protection testing, is now available from M. C. Miller. It is small a n d compact, although it has a low range of 2 mv. and special mirror scales 3.9 inches long. The accuracy is said to be 1%. W i t h this meter, measurements en countered in electrolysis a n d corrosion investigations a n d cathodic-protection test ing in field a n d laboratory can b e j m d e . By use of a circuit selector switch, t h e t w o high-sensitivity d.c. instruments can be connected into a variety of measuring circuits for measurement of potentials, current, resistance, and soil resistivity. This u n i t takes t h e place of many separate instruments usually required. Ε 12
Improved Apparatus f o r Analyzing G a s in Blood I m p r o v e d in seven ways, t h e V a n Slyke blood gas apparatus for facilitating rapid and precise analysis of carbon dioxide, carbon monoxide, oxygen, nitrogen, a n d other gases in blood and other solutions by v a c u u m extraction has recently b e e n offered b y t h e Emil Greiner Co. An arbitrary volume c a n b e taken a n d t h e a m o u n t of gas is determined b y t h e pressure read on the closed e n d m a n o m eter w h i c h is graduated in millimeters directly on t h e tube up to 600 m m . T h e V O L U M E
2 8, N O .
47»
extraction c h a m b e r is g r a d u a t e d at 0.5, 2.0, and 5 0 ml. Some of t h e improvements in t h e ap paratus are: continuously variable speeds available for stirring t h r o u g h a direct ec centric drive from a back-geared motor; clear plastic shield to protect manometer tube from accidental b r e a k a g e ; ball joint connection t o facilitate replacement of manometer t u b e or stopcock assembly; micrometric adjustment of leveling b u l b to give more precise adjustment of volumes; fluorescent light and diffuser plate be hind m a n o m e t e r tube to ease reading of scale. Ε 13
Η @ ϋ Ι l u i Mif@fV
PROTECTS
Precision C o l o r Densitometer T h e Macbeth-Ansco color densitometer, an ultrasensitive precision photometer with a range of diversified uses, has been introduced by the Macbeth Corp. It is reported to give accurate measurement of color densities in narrow spectral ranges, as well as visual densities. A few applications suggested by the company include: measurement of color ranges and liquid densities in chemical reactions, color determination of solid sur faces, a n d as a control instrument in proc esses using a spectrophotometer. Ε 14
Visual Spectroscopic Instrument An original principle of element excita tion is a feature of a spectroscope being offered by Meyer Scientific Co. This new instrument p e r m i t s laboratory personnel to analyze for 33 elements in a matter of several m i n u t e s , it was reported. Known as t h e T o d d Spectranal, it re quires only a few milligrams of the sample to be a n a l y z e d a n d it enables a positive detection without interferences. T h e sam ple is not destroyed. T h e T o d d Spectranal is designed so that t h e element is excited b y controlled voltage a n d a m p e r a g e through two plati num electrodes in a glass condenser cham ber. T h i s obviates t h e need for cool gas flames, hot a r c , or spark excitation. Ε 15
Ν Φ : ^rrosive Pumping Unit ** . «K.taniination a n d no corrosion are • LVr ' ges clr- imed for the n e w p u m p i n g tin·*· ε .:iounced by E. & M. Enterprises. ».,i/U' ά «.he Sigmamotor, it provides concjimc.MS liquid flow by means of a series oi " ' ^ ;eis" t h a t e.^.rt pressure on flexible tubing. LiquiH flow: ^iily t h r o u g h t h e r u b ber Oi synthetic tubing and does not come in contact w i t h any mechanical narts. • For p u m p i n g liquids or gases, t h ^ Sig mamotor can take care of solids ·,* the soîntion, the company states. _c will handle from 1.5 to 30 gal. per hour without speed changes. It can be installed in any system with commercial fittings and c h a n g e d from one fluid to a n o t h e r . If desired, t h e m a c h i n e can h a n d l e a n u m b e r of different fluids at the same time, entirely independent of each other. It can provide proportional a n d extremely small flows. Ε 16
NOVEMBER
2 0,
1950
YOUR INVESTM Eu? The Alnor Pyrotac excess temperature cut-off offers you low-cost, automatic protection against d a m a g e d u e to excessive temperatures . . . safeguards your investment in heating equipment and materials in process. Simple in operation, the Pyrotac constantly indicates temperature of the heated equipment and sounds an alarm and/or shuts down heater cir cuits at a safe temperature. It may also be used as the only control on a proc ess that requires a shutdown upon reaching a final temperature. Auto matic thermocouple break protection assures safety if thermocouple or ex tension wires should break or burn out. A v a i l a b l e in scale ranges from 0°-600° F. to O°-3O00° F. and Centigrade equivalents. A n A l n o r q u a l i t y instrument of laboratory precision and husky con struction; yet the price is only . . .
85
$
— f a r lower than for ordinary instruments of this type.
Ask your Alnor Representative for com plete details or write for bulletin that contains full description and wiring dia grams that show actual applications.
ClSnûïs
Illinois Testing Laboratories, inc. Room 5 0 3 , 420 Ν. La Salle St. ·
PRECISION
Chicago 10, Illinois
INSTRUMENTS
FC*tt E V E R Y
INDUSTRY 4117
