An Improved Self-closing Draw-off Tap.
Year: 1894

page_text: Date of Application, 16th Jan., 1894-Accepted, 3rd Mar., 1894
An Improved Self-closing Draw-off Tap.
I, PAUL AUGUST HERRMAN BURKERT of 14 Ryke Street Berlin in the
Empire of Germany Merchant do hereby declare the nature of this invention and
in what manner the same to be performed, to be particularly described and
ascertained in and by the following statement :-
This invention has for its object to enable the tap to be opened by reason of the
pressure exerted on the same by the vessel held below it so that the assistance or
co-operation of another hand besides that holding the vessel to be filled is rendered
unnecessary and in consequence of the tap being automatically closed by spring
pressure it cannot drip, while should the tap be left open by inadvertence or
carelessness the liquid cannot escape therefrom.
As illustrated by the accompanying drawing this draw-off tap consists of a conical
shell S tapering rearwardly and provided with a screw thread g a portion of this
shell being inserted in the tap hole, and having a lateral opening in which the locking
part T is screwed. This part T consists of the fixed shell h which has two different
bores and b', the narrowest bore b¹ being lowermost so as to form a seat for the
plug k, and further of a hollow cylinder or casing c in the cross pieces of which is
fixed a pin t connecting the plug with the cylinder which is thus secured to the
shell. A spiral spring p is wound upon the reduced end a of the shell h and bears
upon the two circular surfaces ff so as to tightly press the plug k against the
seat e, and thus ensure a tight closing of the tap; the said seat e can also
be made of resilient material. Two or more horizontal arms or spokes are
fixed to the cylinder. To fill a bottle or other vessel having a large mouth the
mouth of the bottle or of the vessel is pressed or pushed against the spokes / so as
to raise the cylinder this compresses the spiral spring and lifts the plug.whereby
the flow can take place. The bottle or vessel being subsequently withdrawn the
spring expands and depresses the cylinder and with it the plug which then bears
firmly upon its seat and prevents the further escape of liquid. To establish a
continuous flow through the tap, the hollow cylinder must be provided with a square
slot and the shell with a pin so as to form a bayonet joint.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
A self-closing draw-off tap characterized by a shell S terminated with a tapered
end and consisting of a shell h fitting into a hollow cylinder c, both the shell and
the cylinder being connected together by a pin t and a plug k and by a spiral spring
arranged between the cylinder p and the shell h whereby the cylinder is depressed
and the plug pressed upon its seat e for the purpose of rendering the tap self closing
and tight, the locking or closing parts being raised with the plug by pressing or
pushing the mouth of a bottle against the spokes in consequence of which the
spiral spring is contracted and the cylinder is lifted.
Dated this 15th day of January 1894.
CRUIKSHANK & FAIRWEATHER,
62, Saint Vincent Street, Glasgow, Agents.