PRODUCTION
SAFETY
FORUM
( N o b o d y is purposely careless in o p e n i n g pressure v e s s e l s , but accidents w i l l h a p p e n . . . A safety r e l e a s e pressure bolt h a s been d e v e l o p e d as p r e v e n t i v e A SAFETY factor for oil burners and -**' strainers has been developed by Thomas C. Wilson, Inc., and is finding use in other safety applications as well, s u c h as securing covers of various types o f pressure vessels against unsafe opening. T h e safety release pressure bolt is actuated by the pressure within the vessel.
A hole through the bolt bod> conducts the fluid under pressure to a piston within t h e bolt head and causes the handle bar t o b e moved and held out of bolt-turning position. W h e n under pressure the handle may be freely rotated without imparting turning movement to the bolt proper. W h e n the pressure is released the handle automatically returns to bolt-turning position and the member secured by the bolt may be safely removed. S 1
For further information on any item mentioned here, see coupon on page 2037
w i d e areas w h e r e a minimum of manpower is available, such as in gasoline bulk plants, storage areas, refineries, railroad yards, and large chemical plants. T h e unit consists of a centrally located steel tank containing dry chemical and nitrogen cylinders used to pressurize the tank. Piping runs underground from the tank to hose houses where 1-inch chemical hose is coiled. Rate of flow is 4 5 0 lb. per minute. Effective range is about 3 5 ft. S 4 Compact Valve
methane fluid. It is designed for ready mounting in laboratory hoods, over distillation assemblies, in storage sheds, or in cabinets, wherever a temporary or permanent fire hazard may exist. T h e device is approved by Underwriters' Laboratories and is rated for 700 square feet of coverage per unit. Its position may be changed t o provide immediate and automatic protection, requiring no operator, over specific pieces of equipment such as reaction kettles or drums o f combustible solvent. It operates at temperatures down to —50° F. and therefore may be installed in outdoor sheds storing combustibles. S 3
A valve for use o n 2- to 20-pound carbon dioxide (ire extinguishers, called Handigrip, has been announced by Kerotest Mfg. Co. Tested and approved by Underwriters* Laboratories, the valve features a carrying handle and operating lever designed to g i v e thumb-tip control for the How of gas. A locking device allows securing the valve in either open or closed position. S 5
Stationary Fire-Fighting Units Ansul Chemical Co. is building 500-, 1,000-, and 2,O00-lb. capacity stationary units for use with dry chemicals in fighting fires. They are designed to protect
A sparkling clear filtrate • • •
F A S T E R . . . AT LOWER COST
Leather Hand Pad
with N i a g a r a Stainless Steel Filters
General Scientific Equipment Co. has designed a glove made of horsehide with
Niagara stainless steel filters give you complete, sparkling filtrate clarity, at rates two t o five times as high as conventional cloth-covered filter presses— and at lower over-all cost. That is why more process engineers are choosing Niagaras t h a n ever before. The totally enclosed, leakproof Niagara Filter requires N O CLOTHS t o handle, wash o r replace. T h e r e is almost no w e a r on the all-stainless-stccl filter leaves, which provide u p to 500 square feet of filter area in one compact unit. Maintenance is virtually eliminated, since there are n o moving parts. Niagara filtration engineers would like to help y o u get the answers on any process involving clarifying filters. Their experience can b e helpful to you in getting improved quality, increased >rodnotion, and lower maintenance and abor costs. Just write, describing the problem, and you will receive a prompt reply. Be sure also t o ask for descriptive Bulletin C-W7.
an adjustable leather strap and fastener to allow good fit and easy removal. Called Safti-Mitt Handpads, the protectors are designed for handling of metal sheets, stampings, sharp-edged castings, cartons, paper, and cases. S 2
J
Pilot Filter R e n t a l Service
Portable Automatic Sprinkler Stop Fire, Inc., has placed on the market a portable, automatic sprinkler type of fire extinguisher self-pressured with CO a and containing one gallon of either carbon tetrachloride type or chlorobromoV O L U M E
2 8,
NO.
24
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3 0 86
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JUNE
MA IN ST.,
12,
1950
BUFFALO
14,
The new Niagara "Auto-Sluice" is telf-cloonIng. It permits fast automatic cake removal and disposal, increases productive filter time, and enables one man to handle as many as six filters at a time.
