An improved respirator / [Oscar von Horstig].

  • Horstig, Oscar von.
Date:
1896
Catalogue details

Licence: Public Domain Mark

Credit: An improved respirator / [Oscar von Horstig]. Source: Wellcome Collection.

    1/4
    JN° 17,115 A.D. 1806 Date of Application, 1st Aug., 1896—Accepted, 17th Oct., 1896 COMPLETE SPECIFICATION. An Improved Respirator. I, Oscar von Horstig, of No. 11 Roonstrasse, Saarbriicken, in the German Empire, Engineer, do hereby declare the nature of this invention and in what manner the same is to be performed to be particularly described and ascertained in and by the following statement:— 5 My invention consists of a respirator made of caoutchouc, leather or wire-work, covered w7ith closely woven textile fabric, and having a filtering bag through which passes the air to be inhaled. In order that my invention may be the better understood I now proceed to describe the same, reference being had to the accompanying drawings, and to the 10 letters and figures marked thereon. Figure 1 is a sectional view and Figure 2 is a back view of my device. This apparatus consists of a frame made of caoutchouc, leather or other suitable material, which may be covered with closely woven textile material. The respirator covers the mouth and nose of the patient, and has a filter bag/which is 15 arranged in front of the entrance valve through which the air to be inhaled passes. This filter bag has a specially large filtering surface and may be filled with very dense filtering material such as cotton, linen, avooI fabric, flannel, felt, asbestos or infusorial earth. If desired it may be provided with disinfecting materials and also with substances which affect favourably the throat or other organs of the body. 20 The current of air is led through two valves, which may be formed as ball or flap valves, so that the air to be inhaled passes to the patient through the filter-bag/ and the entrance valve v and the exhaled air passes through the exit valve v1 direct to the atmosphere without entering the filter bag. The apparatus is provided with a metal ring or cord a, to which are attached bands b, by which the respirator is 25 held in position over the mouth and nose of the patient. Having now particularly described and ascertained the nature of this inven¬ tion and in what manner the same is to be performed, I declare that what I claim is :— A respirator constructed so that the air to be inhaled passes a very large 30 filtering surface, /, consisting of suitable substances, before it arrives at the entrance valve r, and the exhaled air is expelled direct to the exit valve vl9 substantially as described. Dated this 1st day of August 1896. FELL & JAMES, Agents for the Applicant. London: Printed for Her Majesty’s Stationery Office, by 1 lari in # & Son. Lid.—1896 [Price 8 d.]