A stopper is a truncated conical piece of rubber or cork used to close off a glass tube, piece of laboratory glassware, a winebottle or barrel and other containers with orifices. A rubber stopper is sometimes called a rubber bung, and a cork stopper is called cork. Ground glass stoppers are commonly used with laboratory glassware, mainly because of their nonreactivity. This article is about the material rubber, for other uses see Rubber (disambiguation) Rubber is an elastic hydrocarbon polymer which occurs as a milky emulsion (known as latex) in the sap of a number of plants but can also be produced synthetically. ... A cork stopper for a wine bottle Cork material is a subset of generic cork tissue, harvested for commercial use primarily from the Cork oak tree, Quercus suber, with Portugal producing most cork worldwide. ... For eyeglasses, see spectacles. ... Laboratory glassware refers to a number of tools used by chemists and biologists in performing scientific experiments. ... This article is about the beverage. ... Reusable glass milk bottles A bottle is a small container with a neck that is narrower than the body and a mouth. ... A barrel is a hollow cylindrical container, usually made of wood staves and bound with iron bands. ... A bung is an apparatus used to seal a container, such as a bottle, tube or barrel. ...
The assembly rod interengages each stopperplug, whereby all of the stopperplugs are held in their respective tubes by the assembly rod, and removal of the rod from the tubes pulls the stopperplugs out of the one ends of the tubes.
whereby all of the stopperplugs are held in their respective tubes by the assembly rod and the assembly rod can be moved out of the open apertures in the tubes lengthwise of the tubes, transversely of the rod, and pull the stopperplugs therewith out of said one ends of the tubes.
Generally, complementary interengaging holding means are provided between the assembly rod and each stopperplug, whereby all of the stopperplugs are held in their respective tubes by the assembly rod, and removal of the rod from the tubes releases the stopperplugs for their removal from the tubes.
The stopperplug aspect of the invention is used to insert and secure a stopperplug to close a hole in the wall of a storage container or a pipe carrying fluid under pressure.
Compressive force is applied to the stopperplug by the cooperation of threads on a rod member which extends axially through the stopperplug with a toggle or anchor that has a pair of wings that extend to engage the inner wall of the pipe upon rotation of the threaded rod.
The stopperplug assembly 11 is now in place with the body 12 expanded to close the interior passage through the fitting F and with the toggle 14 securing the stopperplug near the wall of the pipe section P as shown in FIG.
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