Show Keeping Up W Science Service Rubber Barrels J. J k Glass Mattresses Will Soon Appear Novelties Arc Shown at Chemical Exposition NEW YORK New developments developments developments de de- de of the chemical in industry industry industry in- in from rubber re acid barrels to mattresses made of glass were exhibited at It Grand Central Palace here herein herein herein in the Expo Exposition of Chemical Industries The rubber barrels are the latest safety device for shipping and han him handling dUng such dangerous chemicals as hydrofluoric acid which will quickly quick ly eat Its way through ordinary glass containers The barrels half as liS big as beer kegs will stand 40 pounds to the square Inch Inte internal inter inter- nal pressure and exterior forces of ot from 1000 to 2000 pounds without without with with- out Injury Mattresses of Glass Wool The glass mattresses consist of glass wool the finely spun fibers of ot glass which are packed Into a mattress In place of hair or cotton commonly used Shown by the same exhibitor were glass ropes and twine for use where the material ma ma- will come In contact with chemicals or heat which would destroy destroy de do- stroy ordinary twine Liquid heat a special high meltIng melt melt- lug Ing point chemical was also shown shO The material Is used In heat treatIng treatIng treat treat- Ing steel by dipping It Into a bath of ot the liquid Gold Cold Silver Find Use Gold and silver coated tubing or sheet metal for tor use In chemical Industries where stainless steel and amI other ordinarily non corrosive alloys alloys al al- al loys are w worthless attracted atten atten- tion Gold coated tubing can be manu manu- for from 1 to 10 1 the I cost of ot a solid gold pipe In fabrication fabrication fabri fabri- cation a la layer er of ot the pipe metal of ofa a thickness of one half halt Inch Is s soldered soldered sol sol- dered to a la layer er of gold In whatever what whar ever proportion the final thickness of the coating Is desired This bea heavy beavy thick twin metallic sandwich sandwich sand Is then rolled cold Into a thin sheet and the two materials materials costly costly sand and Inexpensive retain inexpensive retain their orl original original inal proportions |