Specification of Samuel Barton : face shield for respiring in noxious atmospheres.

  • Barton, Samuel.
Date:
1873
Catalogue details

Licence: Public Domain Mark

Credit: Specification of Samuel Barton : face shield for respiring in noxious atmospheres. Source: Wellcome Collection.

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    Barton's Improved Face Shield for Respiring in Noxious Atmospheres. Barton, my executors or administrators, by an instrument in writing under my, or their, or one of their hands and seals, should particularly describe and ascertain the nature of the said Invention, and in what manner the same was to be performed, and cause the same to be filed in the Great 5 Seal Patent Office within six calendar months next and immediately after the date of the said Letters Patent. NOW KNOW YE, that I, the said Samuel Barton, do hereby declare the nature of my said Invention, and in what manner the same is to be performed, to be particularly described and ascertained in and by the 10 following statement, reference being had to the accompanying Drawing, forming a part of this Specification :— My Invention relates to apparatus which when properly fitted and secured upon the head of any person will permit the wearer to enter and remain with perfect safety in rooms or other places wherein the atmo- 15 sphere is charged with noxious gases, or vapours, or smoke. The manner in which the said apparatus is constructed and used is fully explained in the following description and accompanying Drawing. Description or the Drawing. 20 Pigure 1 is a perspective view illustrating the manner of wearing my improved apparatus. Pigure 2 shews detached portions of the same. Pigure 3 is a perspective view, shewing a modified form of the said apparatus. 25 Pigure 4 is an inside view of the respirator shown in Pigure 3. Pigure 5 is a vertical section on the line x} x, Pigure 4. Pigure 6 shews the metal face piece of the said apparatus detached. Pigure 7 is a horizontal section of the said face piece with a filter lierein-after described. 30 Like letters indicate the same parts throughout the Drawing. a is a cover or shield properly shaped to enclose the nose and mouth, and the adjacent parts of the face. The said cover is preferably made of