An improved apparatus for preserving changeable liquids, also applicable as a hypodermic injector / [Felix De Backer].

  • Backer, Félix de, 1851-1927.
Date:
1894
Catalogue details

Licence: Public Domain Mark

Credit: An improved apparatus for preserving changeable liquids, also applicable as a hypodermic injector / [Felix De Backer]. Source: Wellcome Collection.

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    2 N° 12,187.—A.D. 1894. Be Backer s Improved Apparatus for Preserving Changeable Liquids, f c. by placing above the tube B a disc of cloth, gripped between two discs of wire gauze (nickeled copper) with this very simple arrangement the supply is practically constant and the speed suited to the discharge. In order to use the syphon it is first entirely sterilized and then a vacuum is produced in its interior. It is then placed in communication, by a tube also 6 sterilized, with the receptacle in which the liquid has been filtered, generally under the pressure of an inert gas. As soon as the valve S1 is opened, the liquid flows into the apparatus. The syphon is filled up to a certain height and above that the gas is caused to enter under pressure. This gas may be either azote or any other suitable gas which has no action on the liquid. The lever L is then released, the 10 valve closes, and the stopper U or the stopper I may be fitted on, according to which is to be employed. The liquid thus stored up under pressure remains without change as long as may be desired, seeing it is never in contact with the air. In order to increase the precautions the screw stoppers U and I may be sterilized each time that thev are 15 fitted on, and before each hypodermic injection, allowing a certain quantity of the liquid to run out by the pointed nozzle I. b Having now particularly described and ascertained the nature of my said inven¬ tion and in what manner the same is to be performed, I declare that what I claim is :— 20 1. An improved apparatus for preserving changeable liquids also applicable as a hypodermic injector consisting of a vessel A of suitable shape and dimensions, a long tube B penetrating therein and connected to a headpiece or cover G provided with a channel V which may be terminated as desired by a stopper U or a pointed nozzle 1 and of a piston S1, the rod of which is surrounded by a spring and is 25 operated by a lever L which serve to control the outflow of the liquid from the apparatus, all substantially as and for the purpose described and illustrated. 2. In a hypodermic injection apparatus the combination of a syphon vessel havino* an outflow controlling device and a pointed nozzle I, substantially as and for the purpose set forth. 30 Dated this 22nd day of June 1894. WM. P. THOMPSON & Co., Of 6, Lord Street, Liverpool, Agents for the Applicant. London , Printed for Her Majesty’s Stationery Office,by Darling & Son, Ltd.—-1894 LIBRARY
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