Specification of Joseph Mayer : specula.

  • Mayer, Joseph.
Date:
1870
Catalogue details

Licence: Public Domain Mark

Credit: Specification of Joseph Mayer : specula. Source: Wellcome Collection.

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    V A.D. 1870, §th April. N° 1010. Specula. (This Invention received Provisional Protection only.) PROVISIONAL SPECIFICATION left by Joseph Mayer at the Office of the Commissioners of Patents, with his Petition, on the 6th April 1870. I, Joseph Mayer, of the Pirm of Mayer and Meltzer, of No. 59, 5 Great Portland Street, in the County of Middlesex, Surgical Instrument Makers, do hereby declare the nature of the said Invention for “ Improve¬ ments in Specula for Surgical Purposes,’’ to be as follows :— The object of the Invention is to facilitate the opening for inspection of the vagina, as well as the rectum. Por this purpose the base of the 10 instrument may be of the “ duck bill ” form, or in two or more parts connected to or forming parts of the outer or base plate. At the outer ends or edges of this plate are supported the axes of lever arms, one on each side, which by being bent inwards form opening parts or valves, one on each side, to act on insertion in opening the passage. These 15 lever arms are acted upon by links which are acted upon by finger levers when in use for opening, and when the opening is effected to the extent desired the links may be set to keep the passage open by a set screw. LONDON: Printed by George Edward Eyre and William JSpottiswoode, Printers to the Queen’s most Excellent Majesty. 1870.