time. It is composed of a mercu- impunity. scribed. rial thermometer, curved in inverted V shape, and fixed on a It is claimed that there is no difficulty in polishing the In carrying out the process, it is necessary that the glass to scale graduated to Fahrenheit degrees. The cylindrical tube… … scale. larly for flat glass, the floor of the oven is REGISTERING THERMOMETER. made to cant, so that, when the glass is heat- THE BASTIE TOUGHENED GLASS. tals and other articles exhibited. It may be etched with ed on it, it is turned to a sloping position, and the glass slides We recently witnessed…
Patents · Glass · Improved · Hight · Water · Iron · Scientific American · Keely · Bastie glass · Second hand · Glass broke · Takes place · York city · Feed water · Cast Iron · Patent office · Motive force
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