Improvements in vacuum forming apparatus, applicable for medical and other purposes / [Jean François Breuillard].

  • Breuillard, Jean François.
Date:
1900
Catalogue details

Licence: Public Domain Mark

Credit: Improvements in vacuum forming apparatus, applicable for medical and other purposes / [Jean François Breuillard]. Source: Wellcome Collection.

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    S°18,573 A.D. 3899 | • Date of A pplication, 14th Sept., 1899 Complete Specification Left, 14th June, 1900 — Accepted, 4th Aug1900 PROVISIONAL SPECIFICATION. Improvements in Vacuum Forming Apparatus, applicable for Medical and other Purposes. I, Jean Francois (called Charles) Breuillahd, of 5; Hue Coetlogon, Paris, in the Republic of France, Doctor of .Medicine, do hereby declare the nature of this invention to be as follows: — This invention relates to an improved apparatus for forming a vacuum, which 5 is adapted for use in medicine and for industrial purposes. Hitherto water injectors have only been employed for the formation of a vacuum when fixed upon a conduit of water under pressure, the water being con¬ stantly renewed; I have devised a plan for sending water under pressure into an injector by means of a pump of any suitable kind, in which the same water 10 returns to its point of departure, so as to form a closed and uninterrupted circuit. In order that my invention may be readily and clearly understood, 1 have represented in the accompanying drawing, but by way of example only, the arrangement which forms the subject thereof. Figure 1 is a longitudinal vertical section through the apparatus as a whole, 15 at the level of the axis of the three cylinders which are shewn. Figure 2 is a plan view of the same, and Figure 3 is a vertical cross-section. In these figures similar letters of reference designate like parts. As appears from the drawing, my apparatus consists in principle of two suction 20 and force pumps h arranged upon a base which forms a vessel r provided with a filling aperture e. The piston rod of each of these pumps is connected with a beam l terminating in handles m and pivoted at i upon the dome of a central closed cylinder d. Each of the pumps k is provided with a valve c upon one of the two apertures which are formed at its base and is continued by a pipe 25 extending to the bottom of the vessel r. The other aperture which is not pro- - vided with a valve, is the starting point of a tube, which, passing beneath the upper portion of the base vessel filled with water, opens into the central cylinder d at its entrance to which it is provided with a valve e1. The central dome or cylinder d is traversed throughout its length by a tube t 30 which starts at one centimetre from its base and passes out through the top of the dome where it is curved so as to form a swan-neck. At the upper extremity of the, swan-neck curve is fixed a water injector h the lower extremity of which traverses the upper wall of the base vessel at q and enters the water in the vessel to a depth of two or three centimetres. This 35 injector, the object of which is to form a vacuum, is provided with a socket a adapted for the reception of an india rubber tube placing the injector in com¬ munication with the vessel in which it is desired to create a vacuum. The injector may also be provided with a vacuum indicator. In order to operate the apparatus it is only necessary to place the hands upon 40 the handles m and impart to the beam I a movement of oscillation around its [Price 8d.]