IMPROVEMENTS IN MOLDS FOR PRESSED GLASSWARE
Year: 1884

page_text: COMPLETE
I, WILLIAM HALEY of Ravenna, County of Portage, State of Ohio, one of the
United States of America, Glass Mold Manufacturer, do hereby declare the nature
of my Invention for "IMPROVEMENTS IN MOLDS FOR PRESSED GLASSWARE," and
in what mannor the same is to be performed, to be particularly described and
ascertained in and by the following statement :—
My Invention relates to molds for pressed glassware having a hole through it,
in which the plunger, while descending to shape the glass in the body, comes in
close contact with the top of a plug and forces the plug down with it, and when
the glass has been sufficiently pressed, the plug is forced still further down by
means of a lever, and the plunger lifted.
A sliding sleeve on the plug and also two half rings hinged together are used in
pressing glass into articles of peculiar shapes, such as those having annular recesses
or flaring bottoms, as seen in a glass globe, for the screw to tighten against, and in
various forms of lamp burners.
In the Drawings forming a part of this Specification Fig. 1. is an elevation with
a part of the bottom plate broken off; and Fig. 2. is a vertical section. The
plunger a and ring b may be attached to a press in the ordinary and well-known
manner. When plunger a is being forced down into body b and before the glass
in the body is pressed, the plunger comes in contact with the top of plug c fitting
the top very closely to prevent any glass from entering between plug c and
plunger a
As the plunger continues to descend, it forces plug c down with it until the
glass has been sufficiently pressed.
Plunger a may then be drawn up and plug c forced still further down by means
of lever for the purpose of partially withdrawing the plug (which is slightly
tapered) from the glass before the latter has contracted too much by cooling;
lever is pivoted in the slotted side of bottom plate d and also in the lower end
of plug c which is slotted for the purpose.
Sleeve is vertically slotted on one side to receive lever l. The outer end of
lever is provided with a weight w sufficient to lift plug c.
Sleeve e on plug c is caused to move vertically in bottom plate & by means of a
sliding bar e which extends through bottom plate d and enters inclined grooves i
in opposite sides of sleeve e the parts of the bar which slide in the grooves being
correspondingly inclined as seen in the lower part of Fig. 1.

page_text: The purpose of sleeve e is to enlarge the diameter of the glass in the bottom of
the mold in making glass articles which have flaring bottoms.
When the article has been thus molded and before the glass has materially
contracted by cooling, sleeve e is to be drawn down away from the glass by pulling
on sliding bar e'.
The ring formed by two half rings 881 is used for the purpose of forming an
annular recess or other depression in the outside of the glass.
It is formed in two half rings that it may be opened to allow the pressed glass
when it has sufficiently cooled, to be removed from the mold.
In the Drawings the mold is represented as having been placed in position under
plunger a which has already descended till in contact with the top of plug c, the
plug being held up by weight w on the outer arm of lever b. While plunger a
continues to descend to press the glass, it forces down plug c which slides in
sleeve e, the latter being held up by sliding bar e¹.
When plunger a has thus descended until the glass has been sufficiently pressed,
it is to be drawn up.
The outer end of lever is to be lifted for the purpose of still further lowering
plug c to prevent the cooling glass from contracting against it, and for the same
purpose sleeve e is to be lowered by pulling bar e¹ to slide it in grooves i on opposite
sides of sleeve c.
The operator, by continuing to pull on bar el, may draw or slide the mold from
beneath plunger a, and then by grasping handles h h of body b the latter may be
turned bottom side up and lifted from the molded glass, after first opening balf
rings 8 8¹ by means of their handles o, to release the glass.
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. In molds for pressed glassware, the plunger in combination with a sliding
plug to form an opening through the glass, having its upper end above the molten
glass to be pressed, and closely fitting the plunger while the latter is forcing down 3
the plug and molding the glass substantially as described.
2. In molds for pressed glassware, the plunger a and sliding plug c, having their
ends closely fitted to each other, and a sliding sleeve e surrounding and closely
fitting the plug, and each having vertical movement independent of the other, in
combination with bottom plate d, connected with, and supporting both the plug 3
and sleeve, substantially as described.
3. In molds for pressing glassware, the plug c and its sleeve e, each having
vertical movement independent of the other, in combination with the weighted
lever, sliding bar e', bottom plate d, hinged half rings 8 8, and plunger a, the
sliding plug e extending above the molten glass to be pressed, and its upper end 4
closely fitting the bottom of plunger a substantially as described.
Dated this 16th day of February 1884.