An Improved Spittoon, chiefly designed for use in connection with Dental Surgery.
Year: 1898

page_text: [Communicated from abroad by WALTER ANDREW INGLEHART, of 519, N. Seventh
Street, Philadelphia, Pennsylvania, United States of America, Machinist.]
An Improved Spittoon, chiefly designed for use in connection with
Dental Surgery.
I, HENRY HARRIS LAKE, of the Firm of Haseltine, Lake & Co., Patent Agents,
45, Southampton Buildings, in the County of Middlesex, do hereby declare the
nature of this invention to be as follows:
This invention relates to improved fountain spittoons especially adapted for use
in connection with dental surgery; and also in combination therewith a con-
venient and efficient obtunder and ejector means.
The improved spittoon comprises two bowls, one within the other, a cap or
extension of the outer bowl curved over the edge of the inner bowl at a distance
therefrom sufficient to permit the passage therebetween of the jet-arms hereinafter
described. The inner bowl is supported above the outer bowl on a threaded tube
rising from the centre of said outer bowl. Each bowl is provided with drain-
holes at its lower central portion. Between the two bowls are rotatable jet-arms
sleeved on said threaded tube; these arms extend upwardly and overhang the edge
of the inner bowl, the jets being so directed that the issue of water therefrom:
causes the arms to rotate on their bearing about the threaded tube. The jets are
directed upon the upper inner surface of the inner bowl and as the jet-arms rotate
each jet of water travels completely around the bowl so that no part thereof shall
escape flushing.
A valve-spindle adapted to pass within the tube, which supplies water to the
jet-arms, may be fastened to the bottom of the inner bowl so as to regulate the
supply of water to the jet-arms by rotating the inner bowl.
Beneath the outer bowl surrounding the drain-holes thereof is provided a drain-
off chamber opening into a drain-off pipe which extends downwardly and is open-
at its lower end and is surrounded and enclosed by a larger chamber or gold-trap,
into the side of which opens the waste-pipe at some distance from its bottom.
This gold-trap has a removable bottom making its contents easily accessible.
In combination with this spittoon and connected with the same source of water-
supply under pressure I employ an ordinary injector regulated by a manually
operative valve and adapted to carry water mixed with air downwardly into a .
reservoir, which is open at the bottom but closed at the top and is surrounded
and enclosed by another reservoir which is connected by proper tubing with the
drain or the bowl of the spittoon. As the water mixed with air is delivered into
the inner reservoir the air rises therein while the water is pushed downward into
the outer reservoir and then upward in same and through the tubing connecting
it with the drain. The said connection with the drain being above the level of
the reservoirs a column of water is maintained in said tubing and outer reservoir

page_text: which exerts pressure upon the air contained within the inner reservoir. Suitable
tubing or piping communicating with the upper part of said inner chamber or
air-reservoir furnishes the necessary means of utilizing said compressed air for
obtunding purposes. A tubing or other suitable. conductor connected with the
air-vent, through which the air is drawn by the injector above referred to, furnishes
by the suction of air therethrough an efficient saliva-ejector.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicant,
An Improved Spittoon, chiefly designed for use in connection with
Dental Surgery.
I, HENRY HARRIS LAKE, of the Firm of Haseltine, Lake & Co., Patent Agents,
45, Southampton Buildings, in the County of Middlesex, 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:-
This invention relates to improved fountain spittoons especially adapted for use
in connection with dental surgery; and also in combination therewith a con-
venient and efficient obtunder and ejector means.
The mode of construction and operation of my invention is shown in the accom-
panying drawing which represents the same in side elevation partly in section.
The improved spittoon comprises two bowls 1 and 2, the former within the.
latter; a cap or extension 3 of the outer bowl 2 is curved over the edge of the
inner bowl at a distance therefrom sufficient to permit the passage between them
of the jet arms 4 hereinafter described.
The inner bowl is supported above the outer bowl on the threaded tube 5 rising
from the centre of the outer bowl. Each bowl is provided with drain holes 6 and 7
at its lower central portion. Between the two bowls are rotatable jet arms sleeved
on said threaded tube 5; these arms extend upwardly and over-hang the edge of
the inner bowl, and are supplied with water from the threaded tube 5. The jets or
nozzles 8 are so directed that the issue of water therefrom causes the arms to
rotate on their bearings about the threaded tube 5. Between the sleeve 9 of the
jet arms and the tube or upright 5 is interposed a bushing 10 of hard rubber,
vulcanite or other suitable substance for preventing an unpleasant squeaking which
usually results from the friction between two metals of approximately equal hard-
ness in the absence of an interposed lubricant other than water.
I do not wish to confine myself to hard rubber or vulcanite, but would include, as
within the scope of my invention, any material that would serve as a bushing under
the conditions named to obviate the squeaking.
Water is supplied to the jet arms 4 under pressure from the main source of
supply 21, through the connecting tube 30 and tube 5. This tube 5 is provided
at its upper end with a threaded shoulder adapted to co-operate with the threaded
collar projecting from the lower central portion of the inner bowl 1 so that by
rotating the bowl on said tube 5 the valve-spindle 31 which is secured to said bowl
and projects into tube 5 may be raised or lowered so as to regulate the flow of
water supply to the jet arms.
Beneath the outer bowl the drain holes 7 thereof communicate with the drain

page_text: off pipe 11 which is connected by suitable means, as for instance a rubber tube 12,
to a waste pipe.
In combination with this spittoon and co-operating with the supporting struc-
ture thereof and utilizing the same source of water and discharging into the outer
bowl or waste pipe of the spittoon I provide obtunder and ejector means.
The tube 13 forms the pivot of a jointed bracket 14 and 15; to the member 14
is attached the spittoon, while the member 15 may be attached to the dental chair
or to any other sufficiently substantial object. This tube 13 is provided at its
upper end with the cap 16 which is connected by the tube 17 with the outer bowl
of the spittoon. At the lower end of tube 13 and communicating therewith
is the chamber 18. Within this chamber 18 is the air reservoir 19 open at its
bottom. Extending through cap 16 and tube 13 and into reservoir 19, is the
tube 20 which opens near the bottom of said reservoir. This tube 20 is provided
at its upper end with an ejector supplied from the main source of water supply 21
and controlled by the manually operated cock 22. The air intake aperture 23 is
located back of the jet of water delivered from nozzle 24 so that the rush of water
through the attenuated passage 25 will cause a suction of air through aperture 23
and will carry the air, thus drawn into it, into reservoir 19 where it rises in said
reservoir forcing the water out of same and upwards in tube 13 to outlet pipe 17.
It is obvious that the air which is stored in reservoir 19 will be compressed by the
column of water sustained in tube 13.
The tube 27 communicates with reservoir 19 and extends from the top thereof
upward through tube 13. Connected to its upper end which projects through the
cap 16 is the tubing 28 through which the air under pressure may be conveyed
to the point desired by the operator for obtunding purposes. The cock 29 or other
suitable means may be employed for controlling the issue of air from said reser-
voir.
The tube 26 connected with the aperture 23 affords means for utilizing the suc-
tion of air therethrough for ejector purposes.
Having now particularly described and ascertained the nature of the said in-
vention and in what manner the same is to be performed, as communicated to me
by my foreign correspondent, I declare that what I claim is:-
1. In a fountain spittoon, an inner and an outer stationary bowl in combination
with a revolving support having attached thereto supply tubes to carry water to
the inner bowl.
2. In a fountain snittoon, the combination of a fixed inner and outer bowl,
spaced apart with a revolving sunport mounted between the bowls, and carrying
supply tubes extending up between the bowls the end thereof curved inward over
the inner bowl, a main supply pipe communicating with the revolving spindle, and
a discharge pipe communicating with the inner bowl.
3. In a fountain spittoon, the combination of a supply pipe having mounted
thereon a spindle with a bowl, a revolving support carrying supply tubes, the ends
thereof curved upwardly and inwardly over the bowl, and a discharge pipe com-
municating with the bowl.
4. In a fountain spittoon, an outer bowl, with a tube formed on and rising from
the centre of the outer bowl, in combination with an inner bowl sunported on said
tube; rotatable jet arms provided with a collar sleeved on said tube, and movable
in the space between the outer and inner stationary bowls.
5. In a fountain spittoon, an inner and an outer bowl in combination with a
revolving support having attached thereto supply tubes to carry water to the inner
bowl. and a valve spindle for controlling the sunnly of water to the supply tubes,
adapted to be operated by manually turning the inner bowl substantially as
described.
6. In a fountain spittoon the combination of an outer bowl, a tube formed on
and rising from the centre of the outer bowl, a collar sleeved on said tube and

page_text: carrying rotatable jet arms, and a bushing intermediate the collar and the tube
substantially as and for the purpose described.
7. In a fountain spittoon, the combination of an outer bowl, a tube formed. on,
and rising from the centre thereof, a collar sleeved on said tube and carrying.
rotatable jet arms, and a hard rubber bushing intermediate the tube and collar.
substantially as and for the purpose specified.
8. In a fountain spittoon, the combination in the supporting structure of, the
spittoon of a water injector to cause suction of air for ejector purposes.
9. In a fountain spittoon the combination in the supporting structure of the.
spittoon of a water injector to cause suction of air and means for storing the air
inducted by the water injector and for hydraulically compressing the same for
obtunding purposes, substantially as described.
10. In a fountain spittoon the combination in the supporting structure of the:
spittoon of a water injector to cause suction of air for ejector purposes and means
for storing the air inducted by the water injector and for hydraulically compres-..
sing the same for obtunding purposes, substantially as described.
Dated this 4th day of February 1899
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicant.