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ROSS PATENT.




Ross Patent Vault Light

  We would like to call your attention to the new Ross light which we are now enabled to offer to the public. This is by far the greatest improvement made in vault light work, being one whereby we are able to greatly increase the light and thus make deep basements more valuable. This plate is cast with shoulders in the hole where the glass is inserted, whereby the glass, with corresponding shoulders, can be inserted from below, and then being partly turned around, is thereby fastened in so secure a manner when cemented, that it cannot be got out without breaking it to pieces, nor can it be jarred loose.
  Dauchy & Co. <i>Sidewalk and Vault Lights</i> - Ross Patent 1