Apparatus for Blowing and Moulding in Glass.
Year: 1894

page_text: Date of Application, 10th July, 1894
Complete Specification Left, 30th Apr., 1895-Accepted. 15th June, 1895
PROVISIONAL SPECIFICATION.
Apparatus for Blowing and Moulding in Glass.
I, HENRY BERNOULLI BARLOW, of 17 St. Ann's Square, Manchester, in the
County of Lancaster, Patent Agent, do hereby declare the nature of this invention,
which has been communicated to me from abroad by J. J. Power, of Pittsburg,
Allegheny County, Pennsylvania, United States of America, to be as follows:-
My invention relates to an apparatus for blowing and molding glass articles,
such as bottles and the like.
Its object is to provide a simple form of apparatus by which the work can be
carried on accurately and expeditiously.
The invention includes the mold made of a body section, a neck and top
section, adapted to be moved to and from a body section and it includes also a
special form of blow pipe and other features hereinafter described and particularly
pointed out in the claim.
The glass from which the bottle is to be blown is first put in a conical cavity
of the main mold, which is formed of sections hung together and adapted to be
thrown apart. The hinged post to which the two parts of the main mold are
pivoted support also a neck mold which is also formed in two parts which are hung
on the side post. After the main mold has been closed and the desired quantity of
glass is deposited in the conical cavity, the two sections of the neck mold are
swung together over the said cavity so that the lower shoulder of the neck mold
will rest in said cavity. The blow pipe is then introduced into the neck mold and
as it is of less diameter than the neck mold, the glass will be forced up said neck
and will spread laterally around the enlarged head of the neck mold thus com-
pletely forming the neck of the bottle and the top or rim with the attached bulb
or bloom which is afterwards blown and expanded to form the body of the
bottle. The parts of the main mold rest upon a ring or plate provided with a
central opening.
After the blow pipe has been introduced and the neck and top of the bottle
formed as described above, the parts of the main mold are swung open, leaving the
mass of glass depending from the neck mold, and of the form of the conical
cavity in the main mold. This mass therefore tapers downwardly and centrally
over the opening in the plate and it is thus in proper position to enter the top
of the bottom mold when said material is raised through the opening in the
plate.
A lever is used by which the body mold can be forced up through the opening
of the plate to receive and enclose the tapering mass of glass hanging down from
the neck mold. The body mold is made in sections hung together and these parts
are swung slightly open, so that when they are raised, they will receive and enclose
the depending mass of glass. The body mold is raised until it contacts with the
lower shoulder of the neck mold and then it is closed about the glass and the
operation of blowing a bottle is performed.
It will be understood, of course, that the opening in the plate is of sufficient
diameter to receive the body mold with its two sections swung slightly apart, so
that said body mold may be raised while open to receive the mass of glass
depending from the neck mold.
The blowing tube or plunger is provided with a valve or solid part at its lower
end, consisting of a piece having a stern headed on its upper end within the tube,

page_text: and adapted to allow the valve or head to move towards and from the end of the
tube, so as to open and close the opening therein.
When the blowing tube is first introduced into the mass of glass, this valve
closes by reason of the downward pressure of the tube against the glass, and this
prevents the molten material from rising within the tube, and thus clogging the
same and rendering it useless.
After the body mold has been lifted, however, and has enclosed the depending
mass of glass, the blow tube is lifted slightly and the valve is then free to fall and
when the air pressure is put on, the current of air can pass freely through the tube
and out around the valve, thus blowing the glass to the size and shape of the body
mold. When the tube is first introduced, it may be thrust sufficiently far into the
cavity of the main mold to form a pocket in the depending mass of glass, and this
will aid the subsequent operation of blowing.
The blow tube may be carried by a cross-bar under tension of a spring in side
posts, tending to lift the blow tube. After the glass has been blown to the
size and shape of the body mold, the parts thereof may be separated and the
parts of the neck mold likewise swung open and then the bottle removed and
the operation repeated.
Dated this 9th day of July 1894.
H. B. BARLOW & GILLETT,
Agents for Applicant.
COMPLETE SPECIFICATION.
Apparatus for Blowing and Moulding in Glass.
I, HENRY BERNOULLI BARLOW, of 17 St. Ann's Square, Manchester, in the
County of Lancaster, Patent Agent, do hereby declare the nature of this invention,
which has been communicated to me from abroad by J. J. Power, of Pittsburg,
Allegheny County, Pennsylvania, United States of America, and in what manner
the same is to be performed, to be particularly described and ascertained in and by
the following statement :-
My invention relates to an apparatus for blowing and molding glass articles,
such as bottles and the like. Its object is to provide a simple form of apparatus by
which the work can be carried on accurately and expeditiously.
The invention includes the mold made of a body section a neck and top section,
adapted to be moved to and from a body section and it includes also a special
form of blow pipe and other features hereinafter described and particularly pointed
out in the claim.
In the drawings,
Figure 1 is a vertical sectional view through the entire apparatus.
Figure 2 shows the same in closed position and in perspective, and
Figures 3 and 4 represent detail views.
The glass from which the bottle is to be blown is first put in the conical cavity 1,
of the main mold 2, which is formed of sections 3, 3, hung together and adapted to
be thrown apart. The hinged post 4 to which the two parts of the main inold are
pivoted supports also a neck mold 5 which is also formed in two parts, which are
hung on the side post. After the main mold has been closed and the desired
quantity of glass is deposited in the conical cavity, the two sections of the neck
mold are swung together over the cavity so that the lower shoulder 6 of the neck mold
will rest in said cavity. The blow pipe 7 is then introduced into the neck
mold as shown in Figure 3, and as it is of less diameter than the neck mold, the
glass will be forced up said neck and will spread laterally around the enlarged
head of the neck mold 8 thus completely forming the neck of the bottle and the
top or rim with the attached bulb or bloom which is afterward blown and expanded

page_text: to form the body of the bottle. The parts of the main mold rest upon a ring or
plate 9 provided with a central opening 10. After the blow pipe has been
introduced and the neck and top of the bottle formed as described above, the parts
of the main mold are swung open, leaving the mass of glass depending from the
neck mold, and of the form of the conical cavity in the main mold. This mass
therefore tapers downwardly and centrally over the opening 10, in the plate 9, and
it is thus in proper position to enter the top of the bottom mold 11, when said
mold is raised through the opening 10, in the plate.
Figure 1 shows the mold in proper position below the main mold, when the same
is closed and it shows also, a lever 12, by which the body mold can be forced up
through the opening 10, to receive and inclose the tapering mass of glass hanging
down from the neck mold. The body mold is made in sections hung together
and these parts are arranged, so that when they are raised, they will receive and
inclose the depending mass of glass. The body mold is raised until it contacts
with the lower shoulder of the neck mold and then it incloses the glass and the
operation of blowing a bottle is performed.
It will be understood, of course, that the opening in the plate 9, is of sufficient
diameter to receive the body mold with its two sections swung slightly apart, 80
that said body mold may be raised while open to receive the mass of glass
depending from the neck mold.
The blowing tube or plunger is provided with a valve or solid part at its lower
end, consisting of a piece 13, having a stem 14, headed on its upper end within the
tube, and adapted to allow the valve or head to move toward and from the end of
the tube, so as to open and close the opening therein. When the blowing tube is
first introduced into the mass of glass, this valve closes by reason of the downward
pressure of the tube against the glass, and this prevents the molten material from
rising within the tube, and thus clogging the same and rendering it useless. After
the body mold has been lifted however, and has inclosed the depending mass of
glass, the blow tube is lifted slightly and the valve is then free to fall and when
the air pressure is put on, the current of air can pass freely through the tube and
out around the valve, thus blowing the glass to the size and shape of the body
mold. When the tube is first introduced, it may be thrust sufficiently far into the
cavity of the main mold to form a pocket in the depending mass of glass, and this,
will aid the subsequent operation of blowing.
The blow tube may be carried by a cross bar 15, under tension of spring 16,
in the posts 17, tending to lift the blow tube. After the glass has been blown
to the size and shape of the body mold, the parts thereof may be separated and the
parts of the neck mold likewise swung open and then the bottle removed and the
operation repeated.
Having now particularly described and ascertained the nature of this said inven-
tion and in what manner the same is to be performed I declare that what I
claim is
1. In combination, the sectional main mold having a cavity in its upper part
closed at the bottom by bringing the sections together, the sectional neck mold
above the main mold, said molds being fixed in their vertical relation to each other
and capable of having opening movement only, the sectional body mold arranged
normally below the main mold and movable upwardly to occupy the position of the
main mold when the latter is opened, and the combined plunger and blow tube
consisting of the tube having the valve at its lower end, said blow pipe being
arranged to be moved down through the neck in the main mold to force the
glass up into the neck mold, substantially as described.
Dated this 29th day of April 1895.
H. B. BARLOW & GILLETT.