IMPROVEMENTS IN APPARATUS FOR SHAPING THE MOUTHS OF BOTTLES, JARS, AND VESSELS OF LIKE KIND
Year: 1879

page_text: LETTERS PATENT to John Wilkinson, of Beech Villa, Swinton, in the County
of York, for the Invention of "IMPROVEMENTS IN APPARATUS FOR SHAPING
THE MOUTHS OF BOTTLES, JARS, AND VESSELS OF LIKE KIND."
LARA
PROVISIONAL SPECIFICATION left by the said John Wilkinson at the Office
of the Commissioners of Patents on the 6th June 1879.
JOHN WILKINSON, of Beech Villa, Swinton, in the County of York,
'IMPROVE-
MENTS IN APPARATUS FOR SHAPING THE MOUTHS OF BOTTLES, JARS, AND VESSELS
OF LIKE KIND."
In manufacturing bottles, jars, and like articles, spring tongs are usually employed
to shape the external ring or bead which surrounds the mouth of the vessel, and
these tongs are frequently provided with a central plug which entering the mouth
of the vessel forms a sustaining core, while the mouth part in a soft condition is
being turned round between the jaws of the tongs. Sometimes while this operation
is performed a shoulder groove or hollow has to be formed within the neck of the
vessel to receive means of securing or packing stoppers of various kinds that are
applied to such vessels. For this purpose the core of the tongs is provided with
retractile dogs which are protruded to form the shoulder or hollow, and afterwards
retraced within the body of the core, so that the latter can be withdrawn from the
mouth of the vessel without injuring or deforming the shoulder or hollow. My
Invention relates to a construction of tongs with retractile dogs for the purpose
mentioned as I will now describe. The external limbs of the tongs may be of
the usual form, a pair of legs united at one end by a bow spring and terminating
in jaws shaped internally to the desired profile of the external ring or bead which
has to be moulded. To the middle of the bow spring I fix a stem which extends
centrally along the middle line between the limbs of the tongs. The end of this
central stem is made tubular, and within this tubular part a rod is fitted to slide
longitudinally. Pins on each side of this rod are linked by toggle joints to the
limbs of the tongs, the toggles being so arranged that when the limbs are pressed
together, closing the jaws, the slide is protruded, and when the limbs are allowed to
spring apart the slide is retracted. To the central stem is secured a forked piece
which carries a disc from the centre of which projects the core for the bottle mouth.

page_text: There are also affixed to the central stem two springs which extend through the
disc into a slot cut transversely through the core. The inner faces of these springs
where they pass through the disc are sloped, and the end of the slide is shaped as a
wedge which enters between the sloping parts of the springs, so that when the slide
is protruded it forces the springs apart, and when it is retracted the springs close
in. On the outer faces of those parts of the springs which are within the slot of
the core are formed projections shaped to the desired profile of the shoulder or
hollow that is to be formed within the mouth of the vessel, these projections acting
as the dogs to form that shoulder or hollow. In operating with the apparatus above
described I proceed as follows:-The limbs of the tongs being expanded the end
of the hot bottle or vessel is placed between the jaws, the core being inserted in the
mouth of the vessel which bears against the face of the disc. The vessel being then
turned round while the limbs of the tongs are pressed inwards, the jaws mould the
outside, while the dogs being at the same time protruded beyond the core inside,
form the shoulder or hollow within the mouth. When the moulding is completed
the limbs of the tongs are allowed to expand, permitting the dogs to be at the same
time retracted in obedience to their springs, and the core is then withdrawn from
the bottle or vessel.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said John Wilkinson in the Great Seal Patent Office on the 14th November
1879.
JOHN WILKINSON, of Becch Villa, Swinton, in the County of York.
"IMPROVE-
MENTS IN APPARATUS FOR SHAPING THE MOUTHS OF BOTTLES, JARS, AND VESSELS
OF LIKE KIND."
In manufacturing bottles, jars, and like articles, spring tongs are usually employed
to shape the external ring or bead which surrounds the mouth of the vessel, and
these tongs are frequently provided with a central plug which entering the mouth of
the vessel forms a sustaining core while the mouth part in a soft condition is being
turned round between the jaws of the tongs. Sometimes while this operation is
performed a shoulder groove or hollow has to be formed within the neck of the
vessel to receive means of securing or packing stoppers of various kinds that are
applied to such vessels. For this purpose the core of the tongs is provided with
retractile dogs which are protruded to form the shoulder or hollow and afterwards
retracted within the body of the core, so that the latter can be withdrawn from the
mouth of the vessel without injuring or deforming the shoulder or hollow. My
Invention relates to a construction of tongs with retractile dogs for the purpose
mentioned, as I will now describe. The external limbs of the tongs may be of the
usual form, a pair of legs united at one end by a bow spring and terminating in
jaws shaped internally to the desired profile of the external ring or bead which has
to be moulded. To the middle of the bow spring I fix a stom which extends
centrally along the middle line between the limbs of the tongs. The end of this
central stem is made tubular, and within this tubular part a rod is fitted to slide
longitudinally. Pins on each side of this rod are linked by toggle joints to the
limbs of the tongs, the toggles being so arranged that when the limbs are pressed
together closing the jaws the slide is protruded, and when the limbs are allowed to
spring apart the slide is retracted. To the central stem is secured a forked piece which
carries a disc from the centre of which projects the core for the bottle mouth. There
are also affixed to the central stem two springs which extend through the disc into a
slot cut transversely through the core. The inner faces of these springs where
they pass through the disc are sloped, and the end of the slide is shaped as a wedge
which enters between the sloping parts of the spring, so that when the slide is
protruded it forces the springs apart, and when it is retracted the springs close in.
On the outer faces of those parts of the springs which are within the slot of the core
formed projections shaped to the desired profile of the shoulder or hollow that is to
be formed within the mouth of the vessel, these projections acting as the dogs to
form that shoulder or hollow. In operating with the apparatus above described I
proceed as follows:-The limbs of the tongs being expanded the end of the hot
bottle or vessel is placed between the jaws, the core being inserted in the mouth of
the vessel which bears against the face of the disc. The vessel being then turned
round while the limbs of the tongs are pressed inwards, the jaws mould the outside
while the dogs being at the same time protruded beyond the core inside, form the
shoulder or hollow within the mouth. When the moulding is completed the limbs
of the tongs are allowed to expand, permitting the dogs to be at the same time
retracted in obedience to their springs, and the core is then withdrawn from the
bottle or vessel.
DESCRIPTION OF THE DRAWINGS.
Bio 1 is a side elevation of a shaping tones with retractile dogs according to my

page_text: central stem C terminates in a tubular part in which is freely fitted a slide D. This
slide is linked by toggles E, Ento the limbs AA, and it terminates in a wedge
shaped end d which is inserted between two springs F, F: These springs are attached
at one end to the central stem C and their free ends extend into a slot in the core
mandril G, having on them projections or dogs f. f, which are made of the shape to
which it is desired to mould the groove within the bottle mouth. A fork H attached
to the central stem carries the disc K to which is fixed the mandril G. The bottle
or vessel to be operated on is held with its mouth enclosing the mandril G and
pressed against the disk K, and is turned while the jaws a, a, are closed upon it by
pressing inwards the limbs A, A. The movement of these conveyed through the
toggles E, E, causes the wedge end of the slide D to be pushed forwards between
the springs F, F, expanding them and making the dogs ff, protrude beyond the
mandril (as indicated by the dotted lines in Fig. 2) so as to shape the groove
within the bottle mouth.
Having thus described the nature of the said Invention and in what manner
the same is to be performed, I claim in respect of the spring tongs employed to shape
the mouths of bottles, jurs, and vessels of like kind,
Effecting the protrusion of the dogs used for shaping an internal groove in the
mouth of the vessel by means of a wedge-ended slide advanced between springs
carrying the dogs by the action of toggles linking the slide to the limbs of the tongs,
substantially as herein described.
In witness whereof, I, the said John Wilkinson, have hereunto set my
hand and seal, this Seventh day of November, in the year of our Lord
One thousand eight hundred and seventy nine.
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