Improved Process of Making Hollow Glass Ware.
Year: 1894

page_text: Date of Application, 20th Nov., 1894-Accepted, 22nd Dec., 1894
COMPLETE SPECIFICATION.
Improved Process of Making Hollow Glass Ware.
1, HENRY GUINARD, of No. 446 Canal Street, in the City of New York,
County and State of New York, United States of America, 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 relates to an improvement in the manufacture of hollow glass
ware, by which a durable and perfect article may be produced.
In the accompanying drawing:
Figure 1 is a perspective view of a form of wire skeleton adapted to be embedded
within a glass vessel.
Figure 2 is a similar view of a wire skeleton adapted to be embedded within a
glass tube or pipe.
Figure 3 is a vertical section of a complete vessel containing the wire core shown
in Figure 1.
Figure 4 is a cross section on line 4, 4, Fig. 2.
Figure 5 is a sectional elevation of the apparatus for carrying my invention into
effect, showing the plunger raised.
Figure 6 is a similar view showing the plunger lowered, and
Figure 7 is a detail of the centering pin m.
The letter a, represents a core or skeleton made of tubular, cylindrical or such
other form as corresponds with the shape of the hollow glass ware to be formed,
the characteristic of such skeleton being that it constitutes one endless or con-
tinuously curved body, in contradistinction of being a flat plate. It is obvious
that an infinite variety of shapes may be imparted to the skeleton body, to conform
to the various shapes of hollow ware. Figure 1 shows a shape adapted for the
manufacture of a deep dish b, while Figure 2 shows a shape adapted for the
manufacture of a tube or cylinder. At the top the skeleton may be provided with
a continuous binding wire a', and at the bottom with a similar binding wire a³.
For the manufacture of jars, pots and other hollow glass ware that have a bottom,
the skeleton a, is provided with a corresponding bottom a³, that may be composed
of a series of radially placed wires.
The skeleton thus prepared is embedded within a hollow glass body by means
of the mold A, shown in Figures 5 & 6. This mold is somewhat larger than the
skeleton a, while the plunger B, is somewhat smaller than such skeleton. The skeleton
is properly centered within the mold and is held at a short distance above the
bottom by means of suitable pins m, projecting laterally and downwardly from
the wire, to which they are clinched. The wire skeleton is next connected to a
dynamo or other source of electricity D, by means of the conducting wires c, or
the wire skeleton is heated in other manner before or after being placed into the
mold. Thus the skeleton is properly heated and chilling of the molten glass is
prevented. The molten glass is now poured into the mold A, and then the
plunger B is caused to descend, so as to press the glass through the meshes of the
skeleton and embed such skeleton within the glass. (Figure 6.). The plunger is
then raised, the connecting wires c, are severed and the glass vessel is removed
and annealed in the usual manner, when it is completed.

page_text: Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :
The process of manufacturing hollow glass ware which consists in centering an
endless core of wire netting within a mold, partially filling the mold with glass and
pressing the molten glass through the wire netting into a hollow form, while the
wire netting is being heated, substantially as specified.
Dated this 20th day of November 1894.
ALLISON BROS.,
Agents for the Applicant.