An Improved Funnel.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
An Improved Funnel.
WILLIAM ROBERT Littlefield, 43, Goodall Road, Leyton, Essex, Engineer, do
hereby declare the nature of this invention to be as follows:-
The
An improved funnel for indicating the height of liquid in vessels of non
transparent material whilst they are being filled thus preventing overflow.
funnel is made with a separate central tube fixed inside the ordinary tube, space
is allowed between the two tubes so that the liquid can pass direct into the vessel.
Inside the central tube is a wire, a float is attached to the bottom, and an
indicator at the top. A stop is fixed to the wire, which, by a cross bar at the top
of the central tube, limits the rise of the float, and at the same time assists to
indicate the required height of the liquid in the vessel.
A rest is fixed at the top of the outside tube which limits the position of the
funnel in the vessel and has a slot which allows a wick or other substance to pass
out of the vessel whilst being filled.
1, WILLIAM ROBERT LITTLEFIELD, of 43, Goodall Road, Leyton, in the County
of Essex, Engineer, 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 an improved funnel, and has for its object to indicate
the height of the liquid in the vessel into which the funnel is inserted, so as to
prevent overfilling.
It is particularly applicable for filling lamps, the containers of which are of
non-transparent material.
And in order that my said invention may be better understood I will now
proceed to describe the same with reference to the drawing accompanying this
specification, in which Fig. 1 shews a sectional elevation of my improved funnel:
Fig. 2 plan of same.
The same letters denote the same parts in both views.
a shews the body of the funnel, provided with the ordinary tube a¹. shews
a flange. having a portion cut away at b, c shews an internal vertical tube having
a bar d fixed across top of same. This bar is provided with a hole e through
which a wire f, passes, to the bottom of the wire f I fix a float g made of cork
or other suitable material. h shews a dise fixed on the wire f to limit the rise
of the float in the tube c, j is a disc fixed on the top of the wire g to prevent the

page_text: wire and float from falling out of the tube c.
dise if desired.
This may be used as an indicating
When the funnel is inserted into a vessel, the flange b will rest on the top of
such vessel. Upon liquid being poured into the funnel, it will pass through the
space i left between the tubes a and c into the vessel. As the liquid rises in the
vessel it will cause the float g to rise also, until the disc h comes into contact with
the bar d. It is then known that the vessel is sufficiently full, as the disc h is so
adjusted on the wire f in respect to the bar d as to effect this.
The flange bis cut away at bin order to pass a wick through when filling a
lamp.
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:-
In funnels, the employment of an internal tube furnished with a float, substan-
tially as and for the purposes set forth.
Dated this 26th day of June 1899.
BROWNE & Co.,
Agents for the Applicant,
9, Warwick Court, Gray's Inn, London, W.C.