INDUSTRIAL A N D E N G I N E E R I N G CHEMISTRY
616
formation on specifications, dimensions, and styles, and a table of safe loads round out this useful literature piece. Bulletin
INDUSTRIAL 'LITERATURE
14-P-81
tions.
Bulletin 74 IE.
DESPATCH OVEN
Co*, Minneapolis, Minn. A S. T. M . Bombs for determining the gum stability of gasoline are described on a single data page now ready for mailing. The bomb is used in connection with the latest A. S. T. M. method for gum stability of gasoline, D525-39T. This method describes the procedure for an accelerated oxidation test for gasoline by means of which the induction period is determined. The induction period may be used as an indication of gum stability—i. e.. the tendency of gasoline to form gum during the period of storage. Bulletin 1206 IE. C. J. TAGLIABUE M F G . C O . , Park and
Nostrand Aves., Brooklyn, Ν . Υ. Automatic Centrifugal Clutches. A 4page leaflet just published gives details on the construction and application of this new clutch for all types of power drives. This combination clutch and flexible coupling is said to be simple and rugged in design, positive and smooth in action, and to require no service. D-E Folder IE.
DAWES
EQUIPMENT,
INC., 2280
Penobscot Bldg., Detroit, Mich. Bronze Gate Valves. A new line of standard bronze gate valves including rising and nonrising stem types ranging from γ« to 3 inches in size has been de scribed in an interesting 4-page folder which gives the design details and lists the sizes. New Bronze Gaie Valve
plasticizers, and flexibilizers, bas just been revised and brought up t o date. In addi tion t o the suggested formulas and useful tables contained therein, the above men tioned products have been completely indexed and classified according t o indus try. Of interest, too, is a list of new ma terials recently introduced b y the com pany. Chemical Glyco IE. GLYCO PROD UCTS
C O . , I N C . , 148
Lafayette
St.,
New York, Ν . Υ. Colalloy. Further information on this interesting new alloy i s presented in a series of new bulletins which have just been released. In addition t o listing the materials against which the alloy is said to give outstanding service, these bulle tins show construction units for formalde hyde tanks, culture vessels, filter plants, brine evaporation pans, tubular condens ers, planting pipe lines, sewage disposal plants, and many other items of equip ment. Bulletins 101638 IE and 101738 IE.
COLONIAL ALLOYS CO., East Somer
set, Trenton Ave., and Martha St., Phila delphia, Penna. Distilled Water and Condensate Checker. The conductivity of distilled water or condensate is an excellent meas ure of its purity. The presence in dis tilled water of one part per million of chlo ride ion will increase its conductivity about 50 per cent. A single data page describes a device which, when used in connection with water stills, results in the operation of an alarm signal, electric valve, or other control apparatus when the conductivity of distilled water departs from normal. The instrument can easily be adapted to other control devices or ap plications. Data Sheet DW-201 IE. I N DUSTRIAL INSTRUMENTS, INC., Bayonne,
N. J.
Electro-Chemograph. A 12-page bulle tin describes one of the first commercial equipments to make use of the new drop Folder IE. T H E FAIRBANKS C O . , 393 ping mercury electrode principle of analy sis for qualitative and quantitative deter Lafayette St., New York, Ν . Υ. minations. This new device automatically inks curves from which the determinations Cellosolve Solvents. A new 6-page are made, and represents an improve folder presents in brief and conoise style ment over similar equipment in tnat it information on eight members of the eliminates dark rooms, developing proc Cellosolve group of solvents. A con esses, and delicate galvanometer systems. venient table presents their principal The unit makes possible quick and useful properties—boiling points, specific gravi analyses in those processes where its pos ties, flash points, toluene or xylene dilution sibilities have been determined. Although ratios, solubilities in water and hydro for the present research laboratories estab carbons, as well as solvent powers for cer lishing routine procedures will probably tain resins. The group offers a wide be its principal users, tbe Electro-Chemochoice of boiling points and evaporation graph is a development of significance to rates and is thus useful in many applica chemical and allied industries. Technical tions. Chemical Group Folder 8 IE. Publication E-94( 1 ) IE. LEEDS & NORTHCARBIDE AND CARBON CHEMICALS CORP., RUP Co., 4934 Stenton Ave., Philadel 30 East 42nd St., New York, Ν . Y. phia, Penna. Chemicals by Glyco. A comprehensive catalog of specialty chemicals covering emulsifying agents, glycol and glyceryl esters, synthetic waxes, synthetic resins,
IE.
WALTER B A T E S Co.. I N C . ,
208 South La Salle St., Chicago, 111.
l i s t e d p u b l i c a t i o n s s h o u l d b e ffequested d i r e c t l y f r o m the c o m p a n y c o n cerned· U s e b u s i n e s s s t a t i o n e r y , menfcBo» b u l l e t i n Haram&wrs» a n d refer t o t h i s j o u r n a l . P u b l i c a t i o n s will b e s e n t free wni«a9 ©tîaeFwîae n o t e d .
Air Heaters. A workmanlike 8-page bulletin presents in clear and interesting style the advantages of a recently developed indirect type of air heater. Following a concise but fact-packed discussion of the advantages and disadvantages of indirect air heaters, the various engineering features of this new unit are clearly presented. The bulletin has been well illustrated and should be of interest to plant operators concerned with baking, space heating, drying, and curing opera-
VOL. 17, NO. 18
Floor Grating. An 8-page catalog de scribes the construction and design features of floor grating manufactured by an elec trical pressure welding of cross bars. In
Kom-bi-nator. A 4-page leaflet de scribes this new unit which is said t o be applicable to grinding, mixing, blending, emulsifying, homogenizing, and stabilizing. The machine, which performs these opera tions singly or in combination, will grind solids to as small a s one micron. The manufacturer states that considerable work has been done on the application of the Kom-bi-nator to problems in the food, barmaceutical, cosmetic, and coating elds. Kom-birnator Bulletin IE. T H E MARCO CO., INC., 5355 Westminster Ave., Philadelphia, Penna.
g
Mercury Pressure Gage. A single data page describes a new gage which is said t o m corporate a number of improvements that make for convenience and durability. For example, for the tube an unbreakable glass substitute is used, threaded directly into the casting. This is said to eliminate glands or packing. Bulletin 40Î-B2 IE. CONNELLY
IRON
SPONGE &
GOVERNOR
Co., 3154 South California Ave., Chicago,, HI. Microchemical Apparatus. A new 65page catalog describing a complete line of neurochemical apparatus is available for distribution. An unusual and useful feature for catalogs of this type is the grouping of equipment according to operations and the arrangement of these group pages in a nearly alphabetical order, thus eliminating the necessity of leafing through the index to locate any piece of equipment. I t is said about 99 per cent of this highly specialized apparatus is now manufactured in this country. Microchemical Apparatus
Catalog IE.
RATORY SUPPLY Co.,
N E W YORK LABOINC., 525
Broad-
way, New York, Ν . Y .
A Fire-Making Hobby
F
IRE-FIGHTING, or at least running t o fires at every alarm, is the hobby of many men. In some cases they have gone so far as t o have alarms installed in their homes, so they might know as promptly as the organized fire department when and where the blaze occurs. Fire making is not so common a hobby. Indeed, we know of but one individual who has made an investigation of fire-making methods and devices a hobby. This i s Warren N . Watson, secretary of the Manu facturing Chemists' Association, who has found it both informative and interesting to conduct research particularly on early fire-making methods and devices. This has required long hours of reading and some experimentation at his home in Fair fax, Va. That he has discovered some interesting incidents is shown by the fact that one of his papers on the subject ap peared not long ago in the Journal of Chemical Education, and his work in this field has also come to the attention of those interested in scouting. Mr. Watson has now reported on this o b j e c t in the form of a book of 75 pages, appearing under the title "Early FireMaking Methods and Devices". I t i s well illustrated and contains information not brought together elsewhere in so read able a form. Those interested in copies may obtain them from Mr. Watson a t SI.00 for the book having paper covers, or for $1.50, bound.
