A SUCTION VALVE FOR EXHAUSTING AIR FROM CHAMBERS IN ARTIFICIAL PALATES FOR DENTAL PURPOSES.
Year: 1884

page_text: COMPLETE SPECIFICATION.
I Jons LOUIS PIGOT LEMAN, Dental Surgeon of Beaconsfield Villa, Bingham
Road, Radcliffe on Trent, in the County of Nottingham, do hereby declare the
nature of my Invention for A SUCTION VALVE FOR EXHAUSTING AIR FROM
CHAMBERS IN ARTIFICIAL PALATES FOR DENTAL PURPOSES. and in what manner
the same is to be performed, to be particularly described and ascertained in and
by the following statement:-
The object of my invention is to improve the construction of such artificial
palates as are retained in their places by suction by providing improved means of
obtaining and retaining a vacuum between the natural and artificial palates.
And in order that my said invention may be clearly understood reference is
hereby inade to the accompanying drawings in which similar letters of reference
indicate corresponding parts; such drawings being to an enlarged scale for
greater clearness.
Fig. 1. is a disc composed of pure tin or a mixture of pure tin and lead or
other suitable metal having a central hole as shown and Fig. 2 is a section of the
same on the line a. b. of Fig. 1.
Fig. 3. is a front view of the valve case and collar g, and Fig. + is a section
of the same on the line c d of Fig. 3.
Fig. 5 is a view of a pair of united bars which act as a shield to the valve.
Fig. 6 is a view of the complete valve, and Fig. 9 is a section on the line e ƒ of
Fig. 6.
Fig. 7 is a plan of an india rubber washer which rests upon the collar g, and
Fig. 8 is a section of the same.
The disc is fitted to the model of the mouth, and forms an air chamber. The
valve case and the collar y rest upon the disc h. The valve case has three
tabs, which secure it to the artificial palate. The collar g is raised to form a
valve seat as shewn in Figs. 4 and 9 and forms an air tight joint when the valve in
is pressed against it by the pressure of the atmosphere.
In the centre of the valve seat or collar g there is a small hole that allows any
air to be withdrawn which accidentally or otherwise may have obtained access
between the natural palate and the artificial palate.

page_text: The united bars n are soldered to the valve case has shewn in Fig. 6 before the
insertion of the india rubber washer m The form of the bars n may be varied
their purpose being to keep the washer m from falling away from its-seat, and to
allow the valve sufficient play to let the air pass outwards.
The action of my said invention is as follows-When the palate is placed in the
mouth the air is expelled through the valve, outwards; and if the air at any time
should obtain access to the back of the palate between the natural and artificial
palates the wearer can immediately draw or suck out such air through the valve
and the palate is then securely held in its place by the vacuum thus produced.
The various parts of the valvo except the washer m, may be made of Gold,
Platina, Silver or their alloys.
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
my claim is:
1. The method and means of exhausting the air fron Chambers formed in
artificial palates in manner substantially as herein before described and shewn on
the drawings.
2. The manufacture and use of the valves constructed and acting as and in
manner and for the purpose herein before described and shewn on the drawings,
or any mere modification thereof.