Improvements in Tools for Forming the Necks of Glass Bottles.
Year: 1890

page_text: Date of Application, 18th Nov., 1890-Accepted, 17th Jan., 1891
COMPLETE SPECIFICATION.
Communicated from abroad by WILLIAM PAINTER, Manufacturer, of Baltimore, in
the State of Maryland, United States of America.]
Improvements in Tools for Forming the Necks of Glass Bottles.
We THE BOTTLE SEAL COMPANY LIMITED of No. 8 Great Winchester Street in the
City of London 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 improvements in tools for forming the necks of bottles.
In the description of the said invention which follows reference is made to the
accompanying drawing in which :-
Figure 1 is a front view of the improved tool and
Figure 2 a sectional view of the same with the jaws closed on the core.
Figure 3 is a bottom view of the core and its boss.
Figure 4 is a view of one of the guiding and groove forming levers detached.
Figure 5 is a vertical sectional view taken on the line 5-5 Figure 3.
Referring to the drawing, A represents the jaws of the tool which in the present
case are two in number. Each jaw consists of a rigid casting having forming and
rabbing surfaces a to shape the portion of the bottle contiguous to the mouth.
These jaws are pivoted together at a', and have a common movement. The said
jaws are yieldingly held apart by means of a spring B which is confined within
recesses a² in the said jaws. The spring is preferably perforated and the shank C₁ of
the core, C, passes through it and rests within a bearing a³, formed in or carried by
the jaws.
of the core is adapted to enter the mouth of the bottle and act as a
The portion
former for its inner side.
C³ is a boss formed upon or cast with the core, and hollowed or coved out at its
under side at c and provided at its outer edge with a downwardly extending lip c¹
so as to co-operate with the forming surface of the jaws, to properly round and smooth
the lip of the bottle.
D Dare guiding levers pivoted to the core at d and to the jaws at d. The core is
slotted to receive the levers and the slot is denoted by c².
At the point where the outer ends of the levers connect with the jaws lugs a¹ are
formed for obvious purposes.
In order that the mouth of the bottle may be provided with an interior groove,
the arms D of the levers, D are furnished with points d' of the proper configuration.
When the jaws are open, the points d' are concealed within the slot c² in the core
and when the jaws are closed or brought towards the core, the said points are pro-
jected outward as shown in Figure 2. The stops which limit the closing movement
of the jaws are represented by a³.
It will be understood that as the jaws are closed, the core is projected outward, or in
other words, the core has a motion longitudinally of the jaws.
From the foregoing description it will be seen that the points d² which form the
interior groove in the bottle mouth offer no obstruction to the application of the tool
to the bottle as they are wholly within or do not project beyond the outer surface of
the core when the jaws are extended.
The parts marked in the drawings may conveniently be made of chilled cast iron
and the handles may be loosely wrapped with non conducting heat material as shown
at E by binding the same by metal wires w leaving an air spaces between the handles
and the non conducting binding.

page_text: Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what
we claim is :-
:-
1. In a tool for forming the necks of bottles the combination with the jaws pivoted
together and adapted to be moved towards or from each other, of the central core
situated between said jaws and susceptible of a longitudinal motion relative thereto
and the guiding levers pivoted positively one to each jaw and both to the said
core whereby the relative positions of the jaws and core are rigidly maintained
substantially as specified.
2. In a tool for forming the necks of bottles the combination with the jaws pivoted
together and adapted to be moved towards or from each other of the central core
situated between the said jaws and susceptible of a longitudinal motion relative thereto
and the guiding levers pivoted positively one to each jaw and both to the said core
whereby the relative positions of the jaws and core are rigidly maintained, the said
levers having forming ends extending below their pivots in the said core, adapted to
be projected from the latter, as the jaws are closed, substantially as specified.
3. In a tool for forming the necks of bottles the combination with the jaws pivoted
together and adapted to be moved towards or from each other and the spring for
forcing the said jaws apart, of the central core situated between the said jaws and having
a longitudinal motion relative thereto, and the guiding levers pivoted positively one
to each jaw and both to the said core whereby the relative positions of the jaws and
core are rigidly maintained the said levers having forming ends extending below
their connections with the said core and the latter being slotted to permit the meeting
of the said ends of the levers to form a stop to the movement of the jaws substantially
as specified.
4. In a tool for forming the necks of bottles, the combination, with the central
core, of the jaws connected therewith, and pivoted together at their upper ends, and a
spring for forcing them apart, the said jaws being cast in form and rigid, and provided
with shaping surfaces at their lower ends, substantially as specified.
5. In a tool for forming the necks of bottles, the combination, with the contral
core and the guiding levers pivoted thereto, of the rigid jaws pivoted together and
provided with the lugs within which the other ends of the said levers are pivoted and
held, with the core in line with the said jaws, substantially as specified.
6. In a tool for forming the necks of bottles the combination with the jaws having
forming surfaces upon their lower ends of the central core connected with the said
jaws and the forming boss on the said core coved-out and having a downwardly
extending lip at the sides of the tool for operating in connection with the forming
surfaces of the jaws to round the edge of the bottle mouth and open where the boss
opposes the jaws substantially as specified.
7. In a tool for forming the necks of bottles, the combination of the central core,
and the jaws hinged together and connected with the core by the levers as described,
the said jaws having each a recess, the two recesses being adapted to form a guide
for the upper end of the core substantially as specified.
Dated this 18th day of November 1890.
AYRTON & THOMAS,
Patent Agents.