Specification of Charles Christian Reinhardt : fastening metallic backs to truss pads of glass, &c.

  • Reinhardt, Charles Christian.
Date:
1857
Catalogue details

Licence: Public Domain Mark

Credit: Specification of Charles Christian Reinhardt : fastening metallic backs to truss pads of glass, &c. Source: Wellcome Collection.

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    Fastening Metallic Backs to Truss Pads of Glass, &c. LETTERS PATENT to Charles Christian Reinhardt, of the City of Baltimore in the State of Maryland, United States of America, for the Invention of “An Improvement in the Manner of Fastening Metallic Backs to Truss Pads of Glass, Porcelain, or other Analogous Substances.” Sealed the 23rd June 1857, and dated the 1st January 1857. PROVISIONAL SPECIFICATION left by the said Charles Christian Reinhardt at the Office of the Commissioners of Patents, with his Petition, on the 1st January 1857. I, Charles Christian Reinhardt, of the City of Baltimore, in the State 5 of Maryland, United States of America, do hereby declare the nature of the said Invention for “ An Improvement in the Manner of Fastening Metallic Backs to Truss Pads of Glass, Porcelain, or other Analogous Substances,” to be as follows :—• The Invention refers to the manner of attaching glass or porcelain pads to 10 their metallic backs, and is designed to obviate defects existing in the ordinary mode of securing the glass within a shallow brass cup. It consists in con¬ structing the back with a flange extending around its edge, so as to slip within the rim constituting the edge of the glass pad. This makes a strong attachment, and prevents the metallic back from coming in contact with the 15 skin of the wearer.