Practical Lab Men Like Their
Despatch OVENS
• A i r velocity control • G u a r a n t e e d heat elements — 2 . 7 to 3 6 K W • Precision indicating control • Eight models of w i d e range of capacities • Accurate—speedy— rugged
Manufacturers of Ovens for all purposes
DESPATH
Minnesota Mining & Manufactur ing Company uses Despatch " V " Ovens in research and control of " 3 M " products and applications. Users of Despatch Ovens from its earliest days, this well-known company now has scores of them in its various departments. For information on how Despatch can be put to work on your laboratory and production problems, write for Bulletin No. 107. 379 Despatch Building Minneapolis 14, Minnesota
433 GAS HAZARDS —and How to Overcome Them! As a practical h e l p t o any o n e w h o is confronted w i t h the p r o b l e m of hazardous gases, mists, fumes, s m o k e s and dusts, ACME offers this valuable P r o t e c t i o n G u i d e . It lists 4 3 3 of these hazards a l o n g with ACME Gas M a s k Equipment designed to give you d e p e n d a b l e p r o t e c t i o n i in each specific case. T h i s vital information is available exclusively t h r o u g h I ACME. W r i t e for your copy today.
A C M E . . . the GAS MASK with "Picture Windows" Y o u never have that " h o r s e - b l i n d e r " feeling with the ACME Full-Vision Gas M a s k . Its patented larger lenses provide full, natural vision with greater comfort a l o n g with p r o t e c t i o n you can rely o n . O t h e r ACME features include easier b r e a t h i n g , less f o g g i n g , and increased audibility. T h e r e ' s an ACME M a s k t o p r o v i d e the r i g h t p r o t e c t i o n for every hazard such as those listed in the P r o t e c t i o n G u i d e . W r i t e for Bulletin 541 and 542 d e s c r i b i n g ACME canister gas mask e q u i p m e n t .
ACME PROTECTION EQUIPMENT COMPANY Circle No. 127 Λ 1 on Readers' Service Card, page 139 A
1S43 Kalamazoo Street, South Haven, Mich. Circle No. 127 A-2 on Readers' Service Card, page 139 A
SCHAFFER POIDOMETERS
OVER 1400 N O W SERVING INDUSTRY Scaling can be a serious h u r d l e in any p l a n t . . . until SCHAFFER Poidometers "take over." Fast, accurate, automatic P o i d o m e t e r s insure valuable w e i g h t data . . . step up output . . . p r o m o t e p r o d u c t uniformity. T h e y ' r e easy to o p e r a t e , d u r a b l e , a n d give h i g h e c o n o m y service u n d e r all w o r k ing conditions. Available w i t h total w e i g h t rec o r d e r s , a n d r e m o t e c o n t r o l s for s h o w i n g and c h a n g i n g feed r a t e .
Superior
for
WEIGHING „,„.„...„ BLENDING FEEDING MIXINO RECORDING p
R O p O R T | O N | N G
to give you better
SPRAY NOZZLES • Shown above is a portion of Spraying Systems' own research facilities. Here the variables of nozzle design, fluid properties and operating conditions are studied and measured . . . to provide original data for better design and improved performance wherever spraying is involved. WRITE FOR Catalog 24 . . . contains forty-eight pages of complete information on thousands of nozzle types and capacities.
SPRAYING SYSTEMS CO. Write for latest CATALOG
No. 3-A.
SCHAFFER POIDOMETER CO. 2 8 2 8 S m a l l m a n St.
3255 RANDOLPH STREET · BELLWOOD, ILL. ADVANCED SPRAY NOZZLE DESIGN FOR NEW DIMENSIONS IN CONTROL AND PERFORMANCE
Pittsburgh 2 2 , Pa.
Circle No. 127 A-3 on Readers' Service Card, page 139 A
Circle No. 127 A-4 on Readers' Service Card, page 139 A
VOL. 49, NO. I
·
JANUARY 1957
12 7 A
