An Improved Apparatus for Exhausting Air and Producing a Vacuum.
Year: 1898

page_text: Date of Application, 26th July, 1898-Accepted, 17th Sept., 1898
COMPLETE SPECIFICATION.
An Improved Apparatus for Exhausting Air and Producing a
Vacuum.
I, MARC FINK, of Argyle Street, St. Kilda, in the Colony of Victoria, Engineer, do
hereby declare the nature of my invention for "An improved apparatus for exhausting
air and producing a vacuum," and in what manner the same is to be performed, to
be particularly described and ascertained in and by the following statement :-
My invention relates to improved means for withdrawing air from confined spaces
such as chambers, mines, and the like, and for producing the most perfect or
complete vacuum possible in any confined air receptacle. The said invention
consists of six principle parts namely a tubular vacuum chamber, a water or steam
injector, a bulb-shaped chamber or water-cushion, a connecting nut, an exhaust pipe,
and a discharge or waste pipe connected applied and operating as an apparatus by
attachment to a water-mnain or steam supply for the purposes before mentioned.
The said apparatus and certain minor or auxiliary parts may be described as
follows:-
The said tube or vacuum-chamber is set horizontally and threaded for reception
of an injector consisting of a tapering tube connecting to a water-main or steam
supply. The orifice in the fore end of the injector lies at an adjustable distance from
a narrow duct in the nut connecting the vacuum tube with the bulb shaped water-
cushion through which duct the water or steam is injected from such injector, into
the bulb through which it passes into the discharge pipe. The entry and outlet of
the bulb is fitted respectively with swinging discs which swing forward with the
pressure and close when the pressure is relieved thus acting as clacks, the retarding
weight of resistance of which establishes the minimum of water or steam pressure
below which the apparatus ceases to operate with practical effect while serving also
in conjunction with the bulb to prevent any back-pressure or return of air to the
vacuum chamber. The bulb or water-cushion is also fitted with beaters consisting
of four radiating spoon-shaped blades set to revolve centrally therein by the water or
steam pressure, these beaters causing any odoriferous or noxious air or gases to mix
with the water or steam by means of which all such impurities are sufficiently
neutralized as to become deodorized and innoxious. In order that my said invention
may be more clearly understood I will now describe same having reference to the
accompanying drawings throughout the figures of which similar letters of reference
serve to indicate similar parts.
Figure 1 is a longitudinal section of the apparatus in elevation.
Figure 2 a similar section of elevation of the bulb shaped water-cushion shewing
the beaters or mixers.
Figure 3 the octagonal connecting nut.
In Figure 1, A is the vacuum tube in which is screwed and adjusted centrally the
apering injecting nozzle B, with out-let bore B¹. C the air exhaust pipe (broken)
which may be extended to any length, or in any direction or directions so as to
erminate in one or more confined spaces or chambers to be operated on, any
connections added to the main exhaust pipe being when desired, controlled by ordinary
egulating valves to open or cut off any such connections when desired. C¹ a small

page_text: puncture fitted with stop-key or finger-valve C², acting as a safety bore lessening the
air pressure or strain on the apparatus, and also serving to prevent the flooding of the
vacuum chamber by admitting atmospheric pressure. D the connecting nut with
cone-shaped ends and, central bore or duct D2, and octagonal flange D¹. D the solid
portion of said nut. E the bulb or water-cushion. F the beaters therein for mixing
air or gases with water or steam as before described. G and H swinging disc-clacks
at entry and exit of the bulb or water-cushion I, the wash or discharge pipe which
may be regulated by; an ordinary cock or tap., In. Figure 2. E the bulb or water-
cushion. F the beaters. In Figure 3 D¹ the octagonal connecting nut before
described bored centrally at D²,, The apparatus and its various connections may be
made of any suitable material preferably metallic. To operate the apparatus when
connected to, one or more chambers or confined spaces, water or steam is turned on
and caused to flow through the injector and thence through the duct in the
connecting nut into the bulb or water cushion, the supply of water or steam so
regulated that its pressure be always greater than the atmospheric pressure. As the
water or steam escapes from the bulb or water-cushion and flows from the discharge
pipe a continuous vacuum is set up in the vacuum tube, and the air exhaust pipe
setting up a powerful suctional in-take of air into the exhaust pipe in the chamber
or confined space until a practically complete vacuum is produced therein.
Having now particularly described and ascertained the nature of my said invention
and in what manner the same is to be performed, I declare that what I claim is :-
1. As, an apparatus for exhausting air or creating a practically complete or perfect
vacuum, the combination of a vacuum tube such as A, and injector such as B with
out-let bore such as B¹, and air-exhaust pipe such as C with safety puncture valve
such as, C, and regulating valve C² a connecting nut such as D, with centre
bore or duct, such as D2, with cone shaped sides such as D³, a bulb-shaped water-
cushion such as E, with revolving beaters or mixers such as F, and swinging disc-
shaped clacks such as G and H, and outlet or discharge pipe such as I, fitted together
as a complete, apparatus for connection to an operation by water or steam applied
and working substantially as before described and illustrated in accompanying.
drawings.
Dated this 25th day of July 1898.
WHEATLEY & MACKENZIE.
40, Chancery Lane, London, W.C., Agents.