IMPROVEMENTS IN MOULDS USED IN THE MANUFACTURE OF GLASS BOTTLES AND LIKE ARTICLES
Year: 1884

page_text: PROVISIONAL
SPECIFICATION.
We ALFRED ALEXANDER of 72 Bishopsgate Street Within, City of London,
Bottle Manufacturer and ROBERT PARK of Southwick Sunderland in the County
of Durham Manager of Bottle Works, do hereby declare the nature of our invention
for
" IMPROVEMENTS IN MOULDS USED IN THE MANUFACTURE OF GLASS BOTTLES
AND LIKE ARTICLES" to be as follows:--
.
This Invention has for its object improvements in moulds used in the manufacture
of glass bottles and like articles.
In the manufacture of bottles it is usual to employ a mould divided into two
parts: and in process of blowing, the bottle is introduced into this mould and there
blown out to a proper size and shape. Sometimes these moulds are lubricated, and
the bottle is turned about whilst in the mould in order to give to the glass a smoother
and better surface than it would otherwise acquire.
Our Invention relates to moulds which are to be used in this manner and it
consists in arranging the entire bottom of the mould so that it may rotate freely
with the bottle when the bottle is turned in the mould. For this purpose the
bottom is carried upon a central pivot, and is also supported by wheels and rollers.
We are aware that for the special purpose of producing letters upon the bottom
of bottles, a separate small ring forming portion of the mould bottom has been
made separate from the remainder and so that it can turn when the bottle is rotated
within the mould whilst the remainder of the bottom remains stationary; this
therefore we do not claim."
3
We provide the mould with an outer casing or, if made from the solid; with.
double faces these being separated by a channel; the. outer faces meet when. the
mould is shut, whilst the inner faces are a little apart to allow the smoke, resulting
from the burning of tallow or other lubricating matter, to pass off tlirough: the
channel thus preventing any inconvenience to the workmen.

page_text: We ALFRED ALEXANDER of 72 Bishopsgate Street Within, City of London,
Bottle Manufacturer and ROBERT PARK of Southwick Sunderland in the County
of Durham Manager of Bottle Works do hereby declare the nature of our invention
for "IMPROVEMENTS IN MOULDS USED IN THE MANUFACTURE OF GLASS BOTTLES
AND LIKE ARTICLES" and in what manner the same is to be perforined to be
particularly described and'ascertained in and by the following statement :-
This Invention has for its object improvements in moulds used in the manufacture
of glass bottles and.like articles.
In the manufacture of bottles it is usual to employ a mould divided into two
parts and in process of. blowing the bottle, is introduced into this mould and there
blown out to a proper size and shape. Sometimes these moulds are lubricated, and
the bottle is turned about whilst in the mould in order to give to the glass a
smoother and better surface than it would otherwise acquire.
Our Invention relates to moulds which are to be used in this manner, and it
consists in arranging the entire bottom of the mould so that it may rotate freely
with the bottle when the bottle is turned in the mould. For this purpose the
bottom is carried upon a central pivot, and is also supported by wheels and rollers.
We are aware that for the special purpose of producing letters upon the bottom
of bottles a separate small ring forming portion of the mould bottom has been
made separate from the remainder and so that it can turn when the bottle is rotated
within the mould whilst the remainder of the bottom remains stationary; this
therefore we do not claim.
:
J
We provide the mould with an outer casing or, if made from the solid, with
double faces these being separated by a channel; the outer faces meet when the
mould is shut, whilst the inner faces are a little apart to allow the smoke, resulting
from the burning of tallow or other lubricating matter, to pass off, through the
channel thus preventing any inconvenience to the workmen.
•
In order that our said Invention may be most fully understood and readily carried
into effect we will proceed to describe the drawings hereunto annexed.
DESCRIPTION OF THE DRAWINGS.
Figure 1 is an elevation of a bottle mould constructed in accordance with our
Invention..
Figures 2 and 3 are vertical sections of the same in two planes in right angles
the one to the other..
"Figure 4 shows separately the rotating bottom.
A is the base of the mould, and
BB are the sides jointed to it at B¹ B', they shut together enclosing a cavity in
the form of the bottle to be produced. These side pieces B B are connected in the
usual manner with a treadle and counterpoises, so that the mould can be shut by
placing the foot unon, the treadle and when the pressure upon the treadle is

page_text: The base A of the mould receives into it a bottom piece C, and in this the central
pivot C¹, is securely fixed. Rollers C2C are also mounted on this bottom piece. -
Their axes are dropped into slots or notches provided in the part C to receive them
as is clearly seen in Figure 4.
D is the revolving part which forms the actual bottom to the mould cavity. It
rests centrally upon the point of the pivot C₁, and is supported near its outer edge
by the rollers C, it is thus able to turn very freely.
In the use of this mould it is lubricated with a vegetable oil, colza oil is suitable
for the purpose.
A wooden block in the form of the bottle is prepared; this is mounted at the
end of a stick or handle, it is dipped in the oil and placed in the mould. The
mould is closed upon it and the block is rotated to distribute the oil. The mould
will require to be frequently lubricated in this manner, one lubrication will serve
perhaps for half a dozen bottles.
The process of preparing the bottle upon the end of the tool or blow pipe is well
known and need not now be described. When ready it is placed in the mould and
the mould is shut, the bottle is blown in the mould as at present except that the
bottle is continually turned round by the workman within the mould, this however
we do not claim. The heat of the glass causes a liberation of gas and smoke, which
passes away by the channels B'.
The main feature of novelty in the arrangement is that as the bottle is turned
within the mould the entire bottom rotates with it, by which an objectionable
friction on the bottom of the bottle is avoided. With moulds constructed in
accordance with our Invention the bottles are produced with a better finish and
less skill is requried for their production.
In place of making the sides B B of the mould solid they may be in parts
joined together, the inner part having a jacket formed as a separate piece attached
to it.
Having now particularly described and ascertained the nature of our said
Invention and in what manner the same is to be performed we declare that what
we claim is
The construction of moulds for the manufacture of glass bottles and like articles,
with bottoms mounted so that the entire bottom is able to rotate freely together
with the bottle substantially as herein described.
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