Improvements in Machinery for Manufacturing Glass Vessels.
Year: 1897

page_text: Date of Application, 16th July, 1897—Accepted, 11th Sept., 1897
COMPLETE SPECIFICATION.
Improvements in Machinery for Manufacturing Glass Vessels.
We ROBERT GOOD, Engineer, of Poughkeepsie, in the County of Dutchess, State
of New York, and ROBERT GOOD, Jun., of Denver, in the County of, Arapahoe,
State of Colorado, Engineer both in the United States of America 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:―
Our invention relates to improvements in glass machinery for manufacturing
glass vessels such as have a mouth whose diameter is smaller than that of the
inside of the bottle or other vessel.
or'
The improved machine which we have invented is designed to produce glass
vessels by first pressing, by ordinary methods, a quantity of hot glass into the
shape of a vessel whose upper extremity corresponds in all respects to the head
of a bottle or jar to be produced; but whose inside diameter is the same,
smaller, than that of its mouth its entire length; then partially withdrawing a
plunger and removing the parison mold below the neck, leaving the incomplete
vessel, which is yet in a viscous condition, suspended by the neck part of the
mold, and at the same time closing the finishing mold around the glass vessel,
and finally blowing the glass vessel to the exact shape of the finishing mold by
introducing through the plunger a current of air, steam or liquid under
pressure.
Our improvements relate more especially to the mechanism by which the
parison and finishing molus are operated to bring them into proper relation to
the mass of viscous glass, and to the combination and organization of elements
acting in conjunction with these devices in a manner and for the purposes which
will be hereinafter more fully described and claimed.
To enable others to understand our invention, we have illustrated the preferred
embodiment thereof in the accompanying drawing, forming part of this specifica-
tion, and in which,―
Figure 1 is a side elevation of our machine, showing the parison mold closed;
Figure 2 is a view, in side elevation, with the parison mold opened and with
the finishing mold closed around the embryonic vessel;
Figure 3 is a top plan view, showing the parison mold closed; and
Figure 4 is a detail plan view showing the ring-follower and the neck-mold
thereon.
Like letters of reference denote corresponding parts in all the figures of the
drawings, referring to which,-
The letter A designates a table, supported at a suitable height on legs or
standards a. In this table we provide the slots B, B¹; B, B, which lie at
right angles with one another about the fixed bottom of the finishing mold. at
the centre of the. table. In the slots B, B₁ are fitted the riders C, C which
carry the longitudinally-divided or two-part parison mold D, D¹, and in the.
slots B, Bworks another pair of riders E, E, which in turn carry two of the
three parts of the finishing mold F, F, F, the interior of the finishing.
"

page_text: mold F, F, F, being shaped in exact accordance to the vessel to be produced.
This finishing mold consists of a bottom F, and a vertically divided part forming
the members F, F, and of these three members the bottom F is fixed to, and
stationarily placed on the table A at the middle thereof! where the slots
B, B1, B, B converge, while the vertically divided members F F are attached
to and movable with the riders EE. 3.2
The members D, D₁ of the parison mold are constructed or attached to their
riders C, C¹, so as to slide over- the fixed bottom of the finishing mold, and the
movable parts F, F¹ of the finishing mold are constructed to exactly register with
each other and with the fixed bottom Fil, when the vessel is to be blown, in order
that no imperfections may be produced in the finished product. The members D, D
of the parison mold and the riders C, C to which they are attached, are movable
simultaneously in opposite directions by suitable mechanism. One embodiment
of the means for adjusting the riders C, C and the parison mold as shown in the
drawings, contemplates the employment of the angular levers G, G¹ and the foot
treadle or hand lever G". Each lever G, G¹ is a three armed lever, fulcrumed
at g to a horizontal bar g¹ under the table, and one end or arm h of each lever is
fitted in a slot of the rider C, or otherwise attached thereto; another arm of said
lever is linked at h¹ to the treadle, while the third arm of said levers: G, G¹ are
linked at h to an equalizer bar H which connects the two levers G, G¹, another
treadle H being linked to said equalizer bar for operating the latter, as may be
required. But we do not confine ourselves to this particular method of adjusting
the riders C, C in connection with the parison mold, as it is merely incidental to
the main features of our invention, and any convenient application of power may
be substituted without substantially altering our mechanism.
The finishing mold members F, F are movable in paths at right angles to the
movement of the parison mold members D, D', and to quickly bring the finishing
mold members up to the glass vessel when the parison mold D, D is withdrawn
from the glass vessel, we provide the toggle joint connections I J between the
riders C, C and D, D¹ of the two molds, whereby the movement of the treadle H
which withdraws the parison mold from the vessel operates to move the finishing
mold members F, F1 up to and around the vessel and in proper relation to the
fixed bottoin member F of the finishing mold. The links I connect the riders C¹
with the riders E, E¹, so that the parison mold members 1), D' are caused to
move in an opposite direction to each other and at right angles to the oppositely
movable members F, F1 of the finishing mold, all the mold members being
movable simultaneously on a single depression of the treadle. The two sets of
riders C, C¹ and E, E are fitted in the slots B, B, B, B to slide easily and
truly therein, and the toggle connections I J are preferably arranged below the
table so as to be out of the way and not interfere with the operator in his work
on the table. In connection with the two molls, we employ a vertically re-
ciprocating press K, of any of the suitable forms, such as are used for pressing
tumblers, jar lids, &c. This press carries a hollow plunger L which is provided
with an exit port 7, at its lower end, which port is normally, closed by a plug or
valve on the lower end of a slidable spring pressed rod or stem 71. The
spring that actuates this stem or rod exerts light tension on the valve, so that
the latter is displaced slightly by the force of a current of steam or air which
is designed to be supplied to the hollow plunger by any suitable appliances, for
the purpose of blowing the glass vessel, or said valve may be displaced by vacuum
following the withdrawal of the plunger. This press K is constructed so that the
plunger, the neck mold M. M thereon, and the follower N can be held conveniently
in either of two positions of rest, i.e. either raised away from the parison
mold D, D to permit glass to be run into the mouth of the mold, or rested on
top of the mold D D¹ during the process of pressing and blowing the vessel, as,
in Fig. 2.
The means by which the press may be held in either of the described positions.
may be of the usual or any preferred construction, and as such means forms no

page_text: part of the present invention, and are well known to those skilled in the art to
which the invention relates, we do not deem it necessary to illustrate or describe
the adjusting means for the press.
The follower N is in the form of a ring suitably attached to the press K, and
through this ring-like follower works the hollow plunger L. This follower-ring
carries the neck-mold which is in two parts as at M af, in Fig. 4, the parts of
the divided neck-mold being pivoted as at m or otherwise conveniently adjusted
to the follower ring to permit the divided neck-mold to be opened or closed as
required.
With the divided parison mold D D', we have combined means for locking the
members fixedly in place when the members are closed. One embodiment of this
locking means shown in the drawings, contemplates the provision of the adjustable
bars and the stops or abutments " ". The bars 0 0₁ are pivotally
attached, at o, to the riders CC, which carry the parison mold members D D',
and the stops or abutments "O" are fixed to the table A at such distances
from the centre thereof that when the parison mold is closed, the outer ends of
the locking bars O¹ may be adjusted to rest or bear against the abutments,
whereby the parison mold is held securely and fixedly in position. But we
do not confine ourselves to this special method of locking the parison mold
members, as it is merely incidental, and may be accomplished by other well
known devices, as for example, by a clamp attached to each mold member and'
dropping into a slot to lock them firmly in place.
up
The
With a machine constructed as described, the operation is as follows:
press K is raised to its highest position, leaving the mouth of the parison
mold D D open, the members 1 D₁ of which parison mold are firmly clamped
together by the locking arms 0 0¹, as shown by Fig. 1. A quantity of hot glass
is now introduced into the parison mold, and the press is lowered to rest upon
the mold, while the plunger L is forced downward by suitable appliances into
the hot glass. The follower and neck-mold descends with the press to bring the
As
neck-mold into close juxtaposition to the open mouth of the parison mold.
the hollow plunger is forced downward into the hot glass in the parison
forced
mold, a
glass is
into the neck-mold
part of the viscous
As soon as this is accom-
sufficient to produce the neck of the vessel.
plished, the plunger L is partially withdrawn, to the position shown by Fig. 2,
the locking arms 0 0¹ are liberated, the treadle is depressed to open the mold D D'
and move the members thereof away from the neck-mold and embryonic vessel,
and at the same time the finishing mold members FF1 are closed around the
partially formed vessel which is yet in a viscous condition. After allowing a
moment for the surface of the glass to recover from the chilling effects due to
the withdrawal of the plunger and the parison mold D D¹, and to the adjustment
of the finishing mold FF, a pressure of steam, air or fluid is forced through the
plunger and the glass is blown to the size and shape of the mold F, F, F.
The apparatus now remains at rest for a length of time sufficient for the vessel
to become cool and rigid, when the treadle is operated to cause the two molds
to move to a position equidistant from the centre of the table, the neck-mold M M
is opened, and the press is raised, leaving free the finished vessel which stands
on the fixed bottom section F11.
Having now particularly described and ascertained the nature of our said in-
vention and in what manner the same is to be performed, we declare that what
we claim is :-
1. In a machine for forming glass vessels, the combination with the support-
ing table having a fixed bottom, at the centre of its top for the finishing mold,
slots lying at right angles with one another about said fixed bottom of the
finishing mold, riders C, C¹ carrying the two-part parison mold D, D', riders E, E¹
carrying two of the three parts of the finishing mold, the movable parts of said

page_text: finishing mold being attached to their riders to slide over the fixed bottom of
the finishing mold, substantially as specified.
2. In a machine for forming glass vessels, the combination of a two-part parison
mold, a sectional finishing mold, and means substantially as described for opera-
tively connecting the two part parison mold with the corresponding side sections
of the finishing mold, and means substantially as described for imparting motion
to one of said molds, substantially as described.
3. In a machine for forming glass vessels, the combination of a three-part
finishing mold having a stationary bottom section and two movable side sections,
arranged to register with each other and with the stationary bottom section,
with a two-part parison mold movable in a path at an angle to the movable
sections of the finishing mold, and connections substantially as described, between
the parison mold and the corresponding sections of the finishing mold to present
the latter to the fixed bottom section when the parison mold sections are with-
drawn therefrom, as and for the purpose specified.
4. In a machine for forming glass vessels, the combination of a table provided.
with slots which lie at right angles to each other, two sets of riders slidably fitted
in said slots, a two-part parison mold attached to one set of riders, a three part
finishing mold having its bottom section fixed to the table and its two movable
sections carried by the other set of riders, the levers connected to one set of
riders, and having means to actuate the same, and a toggle joint connecting the
two sets of riders as and for the purposes described.
5. In a machine for forming glass vessels, the combination with a parison
mold and a finishing mold, of a vertically reciprocating press carrying a follower
ring, a divided neck-mold attached to said follower ring, and a hollow plunger
carried by the press and arranged to play through the follower ring and the
neck mold substantially as and for the purposes described.
6. In a machine for forming glass vessels, the combination with a parison
mold, and a finishing mold, of a vertically reciprocating press carrying a follower
ring, a neck-mold on said follower ring, and a hollow plunger provided with a
port at its lower end and with an automatic valve which tends to normally close
said port, as and for the purposes described.
Dated this 6th day of July 1897
WHEATLEY & MACKENZIE,
40 Chancery Lane, London, W.C., Agents.