Improvements in Moulds for the Manufacture of Glass Articles.
Year: 1892

page_text: COMPLETE SPECIFICATION.
Improvements in Moulds for the Manufacture of Glass Articles.
I, JOHN SAMUEL IRWIN, residing at Saltsburg, in the County of Indiana and
State of Pennsylvania, United States of America, Glass Blower, do hereby declare
the nature of my invention for IMPROVEMENTS IN LABEL-FORMERS FOR GLASS-
MOULDS, and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
My invention relates to moulds for forming hollow articles, more especially of
glass, and has particular reference to the means employed for forming letters or
characters on the side of the vessel.
It has for its object to provide for the insertion and withdrawal of a plate bearing
the lettering to be formed upon the vessel without the necessity of removing the
mould from its bed or changing the position of the mould in order to introduce or
withdraw said plate.
It has further for its object to provide for securely holding the plate in position
and for effecting close contact between it and the portion of the mould next to the
article to be formed, so as to avoid the formation of fins along the vessel where the
said plate and mould or "former" come in contact with each other.
It has further for its object to generally improve the manner of introducing and
securing this plate in position, whereby the manipulation of the parts is greatly
facilitated and better results obtained than heretofore, while at the same time there
results great saving in time and labour.
To the accomplishment of the foregoing and such other objects as may hereinafter
appear, the invention consists in the construction and the combination of parts herein-
after particularly described, and then specifically defined by the claim.
Figure 1 of the accompanying drawings is a vertical section through the mould
and its base-plate with the two parts of the moulds closed.
Fig. 2 is a side elevation of the mould with its sections thrown open and showing
the impression-plate in position.
Fig. 3 is a cross-section through the mould and plate.
Fig. 4 is a side elevation of the mould and plate with parts broken away.
Fig. 5 is a perspective of the impression-plate looking at the rear of it.
In the drawings, which contain an illustration of my invention, the letter A
designates a two-part former adapted for the making of bottles in the ordinary way
with the two sections of the former hinged together in the usual manner by the pin
illustrated as extending below the body of the mould and entering the base-block.
In the section of the former which will contain that portion of the bottle on whigh
is usually impressed the name of the person for which the same is made is formedia
recess B, extending lengthwise of the former, which recess is of a depth sufficient to
receive a plate on which is inscribed the name of the person for whom the bottles
are made and such other matter as it may be desired to impress upon the bottle.
11 1
1 1
1
"

page_text: i
This plate is designated by the letter C, and when placed in the aforesaid recess
forms a portion of that side of the former.
It has been customary to use plates for the purpose stated and which constitute
a portion of the former, the said plate working in suitable guides, which hold it in
place and permit it to be slid into and out of position; but the plate so employed
has been introduced from the bottom of the former, which necessitates the removal
of the former from its bed when it is desired to introduce the plate or to remove the
same in order that it may be replaced by another, and this has involved the loss of
time and labour, as well as the removal or disturbance of the former.
To overcome the objections and inconvenience experienced from constructions
heretofore employed, I form a passage-way D in the body of the former, preferably
through the top of the former and longitudinally with the recess B and cause the
same to communicate with the recess B, so that it will be a continuation thereof,
but inclosed on all sides instead of having an open face next to the bottle, as the
recess B has. This allows the plate to be slid into and out of place without moving
the former from off its bed or support, while the four walls which enclose the
passage-way D and also the plate C, which slides therein, serve to accurately guide
and hold the plate in position, and by forming a passage-way through the top of the
former it permits the plate to be quickly dropped into position and lifted therefrom
when it is to be replaced by another.
In the body of the former and to each side of the recess B, I form dovetail
guideways E, which are also preferably extended through the passage-way D, which
beveled guideways permit the plate to be pressed closely up against the inside face
of the former, as by a wedge action, so that close contact can always be maintained
between the plate and the edges of the recess B, and thus the tendency to the
formation of a fin along the line of the recess be reduced to the minimum, if not
practically entirely overcome. These dovetail guideways also tend to more securely
hold the plate against shifting or movement. A set-screw F, passed through the
body of the former, with its end bearing against the plate, serves as a means for
pressing the plate firmly against the dovetail wall of the guideway, and by forming
a slight depression in the outside face of the plate to receive the end of the set-screw
the plate will be held by the set-screw against any longitudinal movement in its
ways.
prefer to form shoulders or stops G at the lower ends of the dovetail guide-
ways, E, so as to limit the downward movement of the plate and prevent the same
from dropping below the bottom of the former. These stops or shoulders also tend
to keep the plate in alignment, even though there should be any unevenness in the
bed on which the mould is supported. The edges of the plate at its lower end are
cut away, as shown at H, or reduced in dimensions at that end. so that the lower
end of the plate may extend down to the end of the former, while portions of the
plate will bear against the shoulders or stops at the lower ends of the guideways.
The construction described not only possesses the advantages set forth in the
detailed description of the several parts, but also greatly facilitates the introduction
and removal of the impression-plate and saves much labour and time in the
manipulation of the parts, besides insuring accuracy of adjustment of the plate and
giving better results in the character of the work done.
I have described with particularity the construction of the several parts; but it
is obvious to the skilled in the art that changes may be made in the details of the
severnl parts without departing from the spirit of my invention.
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 former for making hollow vessels, constructed with a recess to receive an
impression-plate which will constitute a portion of the moulding cavity of the former
and formed with a passage-way through the upper portion of the body of the former

page_text: for the impression-plate to slide in, said passage-way forming a continuation of said
recess and serving to guide and steady the impression-plate and to allow the plate
to be inserted and removed from the upper portion of the mould, substantially as
and for the purposes described.
Dated this 2nd dor of August 1905
ABEL & IMRAY,
Agents for the Applicant.