National Geographic : 1943 Jan
© National Geographic Society Glass Replaces Metals for Piping in Food Factories Tomato juice flows through glass pipes at the P. J. Ritter Company plant, New Jersey, because ways were developed to make tougher glass and weld it on location. Already glass plumbing is widely used in dairies. iocaacnromes oyvvinaru a..Lun c Diamonds Cut Glass Glued onCloth SoItWill Bend Even the lightest scratchwill make thestrongest glass break more easily. Here this fact is utilized to cut colored glass with 42evenly spaced diamonds worth about $400-to makeFlexglass which will conform tocurved surfaces.