Improvements in Tools for Moulding Screw Threads and other Forms on the Exterior of the Heads of Glass Bottles.
Year: 1885

page_text: Improvements in Tools for Moulding Screw Threads and other
Forms on the Exterior of the Heads of Glass Bottles.
I HIRAM CODD of No 41 Gracechurch Street in the City of London Bottle
Manufacturer do hereby declare the nature of my invention for "IMPROVEMENTS
IN TOOLS FOR MOULDING SCREW THREADS AND OTHER FORMS ON THE EXTERIOR
OF THE HEADS OF GLASS BOTTLES to be as follows:-
:-
"
This Invention has for its object improvements in tools for moulding screw
threads and other forms on the exterior of the heads of glass bottles.
For this purpose I form the tool either with a pair of die blocks as in the tools
or tongs now commonly used for shaping the heads or preferably with three or
more such die blocks which can be made to move radially towards and to meet
one another so as then to form a complete block having through its middle a hole
corresponding in form and dimensions to the form and dimensions to be given to
the exterior of the head. I also form the tool with a central plug or core to enter
the mouth of the bottle and with a disc or "swiller" at the base of the plug a core
for the end of the head of the bottle to abut against as is usual. The three or
other number of die blocks I carry by a ring which can turn freely around the
disc or "swiller so that when the head of a bottle is held between the dies and
the bottle is turned the dies may be carried round with it without turning the
remainder of the tongs. I also provide the central plug or core with radial blades
or dogs which can be moved outwards and made to project from its circumference
so that if the bottle be turned these blades will press outwards the soft metal of
which the head is being formed and press it against the inner face of the dies and
I also form the tool in such manner that the pressing outwards of these dogs or
blades may be effected after that the dies or blades have been made to meet and
fit against one another.
"
-
If it be desired to mould a screw thread around the exterior of the head of a
bottle then portions of a screw thread would be cut upon the inner face of each of
the die blocks or if it is desired to mould recesses or projections of other form upon
the head then the inner face of the dies would be made to the shape required to
produce them.

page_text: Forms on the Exterior of the Heads of Glass Bottles.
I, HIRAM CODD of N° 41 Gracechurch Street in the City of London Bottle
Manufacturer 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 has for its object improvements in tools for moulding screw
threads and other forms on the exterior of the heads of glass bottles.
For this purpose I form the tool either with a pair of die blocks as in the tools
or tongs now commonly used for shaping the heads or with three or more such die
blocks which can be made to move radially towards and to meet one another so as
then to form a complete block having through its middle a hole corresponding in
form and dimensions to the form and dimensions to be given to the exterior of the
head I also form the tool with a central plug or core to enter the mouth of the
bottle and with a disc or "swiller" at the base of the plug or core for the end of
the head of the bottle to abut against as is usual. The three or other number of
die blocks I carry by a ring which can turn freely around the disc or "swiller" so
that when the head of a bottle is held between the dies and the bottle is turned
the dies may be carried round with it without turning the remainder of the tongs.
I also provide the central plug or core with radial blades or dogs which can be
moved outwards and made to project from its circumference so that if the bottle
be turned these blades will press outwards the soft metal of which the head is
being formed and press it against the inner face of the dies and I also form the
tool in such manner that the pressing outwards of these dogs or blades may be
effected after that the dies or blades have been made to meet and fit against one
another.
If it be desired to mould a screw thread around the exterior of the head of a
bottle then portions of a screw thread would be cut upon the inner face of each of
the die blocks or if it is desired to mould recesses or projections of other form
upon the head then the inner face of the dies would be made to the shape required
to produce them..
Figure 1 shews a side elevation partly in section of a tool formed as above
described.
Figure 2 is an end view of the same.
Figure shews an elevation of the central plug or core and the part which
carries it. Figure 4 is a longitudinal section of the central plug or core and the
revolving ring carried by it. The section is taken at right angles to Figure 3.
Figure 5 is an end view of another pair of tongs in which the construction is
slightly modified.
The tool shown at Figures 1 to 4 resembles in many respects the tool described
in the Specification of a Patent granted to myself and Thomas Foster No 4268 in
the year 1873.-
A A are the arms which as usual spring outwards away from one another as in
the tongs commonly used for shaping the heads of bottles.

page_text: B is a central stem fixed at one end to the spring head which couples together
the two arms and at the opposite end carrying a central plug or core C to enter
the mouth of the bottle-this core is also fitted with dogs D which can be
withdrawn into the core or be made to protrude therefrom they are carried by
spring blades E as is now usual. F is a wedge which can be thrust between the
spring blades and force them apart from one another and so make the dogs
protrude from the central plug or core C. The wedge is as in the Specification
of the Patent hereinbefore mentioned fixed to a bar H generally called the
"quadrant" which is thrust forwards whenever the tongs are grasped in the hand
and whenever the arms are so made to approach one another, the ends of the
'quadrant" have for this purpose slots formed in them inclined to one another
and pins on the arms project through these slots.
The central plug or core C is carried by the stem B in the following manner.-.
The stem has rigidly fixed to it a forked piece I, to lugs I¹ projecting inwardly
from the two limbs of this fork is secured a flange which is around the base of a
cylinder J.
From the cylinder projects the plug or core C― through this plug is a transverse
slot in which lie the dogs D these are carried by the spring blades E which are
fixed as shown to the forked piece I.
Surrounding the cylinder J is a ring K which is kept from moving end wise by
a split ring L the two parts of which are fixed by screws M to the ends of the two
arins of the fork I.-Around the outer end of the ring K is a flange K¹ upon
which rest two die blocks N which can slide radially towards or from the centre of
the ring they are kept in place by a projection on each passing through a radial
slot in the flange K-the sides of the slot and of the projection may be made to
dovetail to retain the blocks from moving away from the flange or to effect the
same object a small bar K2 may be fixed to the projection so that its ends may
bear against the back of the flange-N¹ are springs fixed at one end to the
flange K and at the other connected to the die blocks-the springs tend to force
the die blocks away from one another.-00 are half rings embracing the
circumference of the two die blocks-one of these half rings is secured to the end
of one of the arms of the tongs and the other to the other arm.
.
When the tongs are grasped in the hand the two half rings are brought
together and form a complete ring within which the two die blocks accurately fit
so that the two blocks are held together and yet are free to revolve within the
ring. In this way the die blocks can revolve freely when the tongs are closed and
the head of a bottle is being moulded by them.-When the head of the bottle has
been moulded the die blocks should be allowed to turn into a position in which
one die block lies within one half ring and the other die block within the other
half ring which can readily be seen by the workman and then when the arms of
the tongs are allowed to spring apart the die blocks will also be forced apart away
from one another by the springs N¹ and so liberate the head of the bottle from
between the dies.
In order that the dogs may be thrust outwards from the central plug or core
after the die blocks have been brought together by the closing of the tongs the
arms of the tongs are made with sufficient spring in them to allow of their being
sprung somewhat together at their centre after the ends of the two half rings Ŏ
have been brought together so that the wedge piece F may be thrust forwards a
distance after the tongs are closed.
In place of effecting the thrusting outwards of the dogs after the closing of the
tongs in the above manner the same object might be obtained in the manner
illustrated in the end view of a pair of tongs shown at Figure 5.
In this construction the two die-blocks in place of being forced apart by their
springs N¹ are forced together by these springs-and around the outer cir-
cumference of each die block is a dovetail projection to enter a corresponding
dovetail groove in the half rings O. From cach half ring extends an arm P in
which is a slot P¹-the ends of the arms of the tongs enter these slots. When the

page_text: arms of the tongs are allowed to spring apart from another the spring of the arms
overcomes the springs N¹ and draws the die blocks away from one another. When
however the tongs are grasped in the hand and the arms of the tongs thereby
moved inwards towards one another the springs N' close the dies together and by
continuing to squeeze the arms of the tongs inwards towards one another after the
die blocks have so been brought together the wedge F may be thrust forward and
80 made to then move the dogs D outwards from the central plug or core C.
In Figure 1 the inner face of the dies is shewn to be suitably formed for
moulding a screw thread around the exterior of the head of a bottle but it might
be suitably formed for moulding any other projection or indentation on the head
of the bottle so long as it is of such a nature that each half of the die can be
drawn back away from the head of the bottle after such indentations or projections
have been moulded by them.
I have only shown tongs fitted with two die blocks but as before stated the die
might be divided into three or more parts if the form to be given to the head of
the bottle is such that the parts of the die could not be drawn back if the die
were divided into two parts only.
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
1. The construction of tongs used for shaping the heads of bottles with the die
blocks for moulding the exterior of the head carried by a plate which is free to
swivel around the central plug or core and with the die blocks capable of being
moved towards or away from one another and in such manner that when the
tongs are grasped in the ordinary manner by the workman the die blocks are
brought together and then form a complete circular die free to revolve together
with the plate which carries it and in addition blades or dogs are moved outwards
from the central core to expand the head of the bottle into the die.
2. The construction of tools for moulding screw threads and other forms upon
the exterior of the heads of glass bottles substantially in the manner herein before
described.
Dated this 20th day of November 1905