Specification of Charles François Jules Fonrobert : artificial leech and sucker.

  • Fonrobert, Charles François Jules.
Date:
1856
Catalogue details

Licence: Public Domain Mark

Credit: Specification of Charles François Jules Fonrobert : artificial leech and sucker. Source: Wellcome Collection.

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    A.D. 1855 .N° 2773. Artificial Leech and Sucker. LETTERS PATENT to Charles Francis Jules Fonrobert, of Berlin, in the Kingdom of Prussia, for the Invention of “ An Artificial Leech and a Sucker.” Sealed the 23rd May 1856, and dated the 8th December 1855. PROVISIONAL SPECIFICATION left by the said Charles Francois Jules Fonrobert at the Office of the Commissioners of Patents, with his Petition, on the 8th December 1855. I, Charles Francois Jules Fonrobert, do hereby declare the nature of 5 the said Invention for An Artificial Leech and a Sucker, to be as follows:— A cylindrical glass tube is attached to a curved end piece or elbow of ivory, metal, glass, caoutchouc, or other suitable material, in which is placed a small curved lancet, mounted on a pin or axis, which is capable of being easily removed when required. A piston is fitted into the cylindrical tube and 10 attached to a piston rod, which passes through a cap on the end of the tube, and carries a ring or handle by which it can be raised. A spring catch is formed on the side of the piston rod or attached to it, so that when the piston is raised by its handle it may be retained by the catch. Below the piston is a stem or prolongation of the piston rod, with a small 15 button at its extremity, which comes in contact with a small projecting arm