Improvements in Spittoons.
Year: 1896

page_text: Date of Application, 7th July, 1896-Accepted, 3rd Oct.. 1896
COMPLETE SPECIFICATION.
Improvements in Spittoons.
We FRANK HURLBUT, and ALBERT CHARLES CLARK, both of Masonic
Temple, corner State and Randolph Streets Chicago, Cook County, Illinois,
United States of America Dealers in Dental Spittoons and Supplies do hereby
declare the nature of the said invention 'and in what manner the same is to be
performed to be particularly described and ascertained in and by the following
statement:-
Our invention relates to that class of spittoons used by dentists, physicians, and
other specialists, the object being to provide a revolving spittoon, ornamental in
appearance, useful in all its functions, and self cleaning. We obtain the object
desired by providing a spittoon constructed of two bowls, one within the other the
outer bowl being supported by an arm or bracket secured to the operating chair,
or to the wall, or floor stand as may be desired. The inner bowl is made
revolvable, being supported within the outer bowl upon a centrally disposed pivot
and actuated by a jet of water injected against the surface of the bowl to revolve
the same. The inner bowl being thus revolved is continually covered with a sheet
of water which prevents the lodgment of any accretions thereto. For a more
detailed description of our invention, reference will be had to the accompanying
drawings in which,
Fig. 1 is an elevation of our invention, the right portion broken away showing
the relative position of the two bowls and a removable cap covering the upper
edges of the same, said cap secured to the outer bowl. The lower portion of the
figure being a vertical axial section through the mechanism.
Fig. 2 is a plan or top view of Fig. 1, with cap removed.
Fig. 3 is an enlarged view in section of a portion only, of the inner and outer
bowls with the removable cap in proper position.
"
Fig. 4 is an enlarged view in vertical axial section of the lower part of Fig. 1.
Fig. 5 is a plan view in horizontal section on line'1-1 of Fig. 4.
Fig. 6 is a plan view in horizontal section on line 2-2 of Fig. 4.
Fig. 7 is a plan view in norizontal section on line 3-3 of Fig. 4.
Similar letters refer to corresponding parts in all the figures.
A, and B, are the inner and outer bowls respectively, and C, is a removable cap
secured to the outer bowl B, and extending over and inside of the inner bowl A.
D forms the bottom of the inner bowl A and has perforations e-e etc., as shown in
Figures 1, 2, 4 and 5. The under side of the fixture D is provided with a downward'
extending collar D' concentric with the disc D. 'Within this collar D¹, a socket is
provided in the under side of the disc D'into which a pivot stem d, is rigidly secured.
E is a neck piece which is secured to and supports the outer bowl B. The middle
portion of the neck E. is conical shape corresponding with the cone-shaped collar J,
at the outer or upper end of the arm I. The lower end of the neck E is screw
threaded to receive the lock nut H. F, is a tubular post erected within the
neck E of the outer bowl B, and is disposed to receive the pivot stem d, the
tubular post F is flanged out near the lower end corresponding with the flange
of the tail piece G, the lower end of the post F, is screw threaded to receive
the plug or pivot bolt a, and the upper part of the post F is screw threaded
to receive the thimble b. G, is a tail piece adapted to be connected with a
suitable waste pipe. The upper end of the tail piece G, being flanged out and
disposed to be engaged by the inward extending flange of the lock nut H. a, is d

page_text: screw plug or pivot bolt, fitted into the lower end of the tubular post F, and
provides a pivot hearing for the pivot stem d. b, is a thimble, screw threaded and
fitted into the upper end of the tubular post F; the thimble b, being bored out
cone-shaped at its upper end and corresponding with the conical enlargement at
the upper end of the pivot stem d, and provides a side bearing for the same.
c, is an annular space enclosed by the downward extending collar Di of the disc D,
and serves as a pneumatic ram calculated to prevent water or other substance
from working up and around the pivot stem d. d, is the pivot stem above referred
10 and is bevel pointed at the lower end pivoting into the upper end of the screw
plug a. the pivot d, being provided near its upper end with a conical enlargement
corresponding with the bore in the thimble 6, the upper end of the pivot d, is
rigidly fitted into the bottom of disc D of the bowl A. The flange, of the
tubular post F, together with the flange of the tail piece G, is engaged between
the inward extending flange of the lock nut H, and the bottom end of the neck E,
thus forming a rigid support for the pivot stem d, upon which the inner bowl A,
revolves. The screw plug a, and the screw thimble 6, being adjustable vertically
admits of a perfect adjustment of the bowl A. e, indicates perforations in the
bottum disc D of the inner bowl A. g, indientes openings in the flange, of the
tubular post F. L, indicates an annular space between the bowls as well as
between the inner wall of the neck E and the post F. K, represents a supply pipe
which may be secured to the outer bowl B, and extends above the bowls as shown
in Fig. 1. The supply pipe K is provided at its upper terminal with two branch
pipes and three valves n n-n, the water being conducted to either valve
independent of the other. One of the valves n is adapted to receive and support a
water injector m, the injector m is supposed to swivel at o, heing the lower end of
one of the valves n. The injector m, terminates at the lower end with a bent
nozzle and is provided intermediately with a cross piece p, or any other suitable
device to enable the injector to he turned in the swivel joint O to any position
desired. One of the remaining valves n, may be utilized to operate a saliva ejector
and the other may be used for filling a drinking glass; the two last mentioned
features forming no part of our invention. The operation of our invention may be
summed up as follows: Assuming all the elements to be in position as shown in
Figures 1 and 2, the arm 1, being extended as before described; the tail piece G,
being connected with a suitable waste pipe and the supply pipe K being likewise
connected with the source of supply. Wishing to operate the bowl the operator
will open the valve n, above the injector m, admitting water through the injector m,
to the bowl A. The nozzle of the injector m, being set at an obtuse angle with
a radial line of the bowl A; the force of the water thus injected against the
surface of the bowl causes the same to revolve upon its pivot and the revolving
motion of the bowl causes the same to remain covered with a sheet of water; the
surplus of water escaping through the openings e, in the disc D, to the space L.
In the event of an overflow of the inner bowl A, the surplus may escape under
the cap C, and over the upper edge of the inner bowl A, into the annular space L
and thence down and out through the openings g, in the flange f of the post F, to
the waste pipe below.
We are aware that there are elements in our invention, the principles of which
are not new, and we do not claim these in a broad sense.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
let. In a spittoon a revolvable bowl, and a water injector held to direct a stream
of water against the surface of said revolvable bowl, to revolve the same.
2nd. In a spittoon, an inner and an outer bowl, the inner bowl being revolvable,
a water injector held to direct a stream of water against the surface of the inner
bowl to revolve and cleanse the same, and a valve to regulate the force of the
supply to the injector, and a swivel joint between the injector and the valve so that

page_text: the angle at which the stream of water is directed against the revolvable bowl may
be changed to modify the speed of the revolution of the bowl.
3rd. In a spittoon an inner and an outer bowl, the inner bowl being revolvable-
within the outer bowl, a water injector held to direct a stream of water against the
surface of the inner bowl to revolve the same, and a cap placed over the upper
edge of the two bowls secured to the outer bow).
4th. In a dental spittoon, the bowl A mounted upon a perforated bottom disc D,.
said disc being adapted to receive the pivot stem d, and an annular extension Di
from the under side of the disc D, enclosing the upper end of the post F, and
space c, as and for the purpose specified.
5th. In a dental spittoon the neck E, on which is mounted the bowl B, the
cylindrical post F erected within the neck E, the screw plug a, in the bottom of
the post F providing a pivot bearing for the pivot stem d, upon which the inner
bowl A revolves. The thimble b, providing a side bearing for the pivot d, all as
specified and described.
6th. In a dental spittoon in combination with an inner and outer bowl, the inner
bowl being revolvable, an upright waste pipe tail piece G, and the flange, of the
post F held in connection with the neck E by the lock nut H, and the bowls so
mounted that the annular space between the bowls communicates with the waste-
pipe.
Dated this 10th day of February 1806
GEORGE BARKER,
77 Colmore Row, Birmingham, Agent.