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477,148 · Parker · "Light Transmitting Floor or Sidewalk" · Page 2 Home  > Prism Glass  > Patent Index  > Page 2

477,148: 2 of 3

and will be fire-proof, and, when so desired, water-tight. It will be found to possess ad-vantages over most of the constructions heretofore employed to secure these qualities, for the form of beam and the manner of-spacing and holding them contribute-to the strength and stiffness of the structure and enable light beams to be substituted for heavy beams.     Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is--     A floor or similar structure consisting of the rails or beams having bottom flanges set at

intervals apart in spaced rows, the spacing-blocks B, located beneath the joints of the glass slabs, the glass slabs or plates, and the supporting-blocks D between the flanges and the slabs or plates, substantially as hereinbefore described.     In testimony that I claim the foregoing I have hereunto set my hand and seal. GEO. W. PARKER. Witnesses:     CHAS. E. KELLY,     EDWARD E. OSBORN.