Improvements in the Method of Attaching Glass Containers (for Oll or other Liquids) to Metal Mounts or Stands.
Year: 1888

page_text: Date of Application, 21st Mar., 1888
Complete Specification Left, 13th Dec., 1888
Complete Specification Accepted, 12th Feb.. 1889
Improvements in the Method of Attaching Glass Containers (for
Oll or other Liquids) to Metal Mounts or Stands.
GEORGE WILLIAM PRIDMORE Highland Villas Holyhead Road Handsworth in
the County of Stafford, Designer & THOMAS HENRY WOODALL 2 Albert Road
Handsworth in the County of Stafford Commercial Traveller, do hereby declare the
nature of this invention to be as follows:-
Improvements in the method of attaching Glass Containers (for Oil or other liquids)
to metal Mounts or Stands which consists of a new arrangement whereby the fixing
is arrived at by means of having the glass blown or pressed into what is called the
bottom screw,
which has some deeply turned or stamped parallel lines thereon-so that
when the glass is blown or pressed into the same makes it impossible for the Container
to be pulled or otherwise severed from it-This gives a great advantage as the
usual means of attachment is by plaster of Paris which invariably allows the Container
to become loose & is dangerous.
The principal we advocate would make the lamp perfectly safe as the bottom
screw and container would so to speak be one, & would materially strengthen the
same as the ordinary container bas a straight peg whereas our Invention would allow
the glass to be blown or pressed to the outline or shape of the bottom screw.
Dated this 20th day of March 1888.
GEORGE WM. PRIDMORE.
THOMAS H. WOODALL.

page_text: Improvements in the Method of Attaching Glass Containers (for
Oil or other Liquids) to Metal Mounts or Stands.
We GEORGE WILLIAM PRIDMORE of Highland Villas Holyhead Road Handsworth
in the County of Stafford Designer and THOMAS HENRY WOODALL of No. 2 Albert Road
Handsworth in the County of Stafford Commercial Traveller do hereby declare the
nature of our 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 consists of the improvements hereinafter described and illustrated
in the accompanying Drawing in the method of attaching the glass oil containers of
lamps to the metal mounts or stands of the said lamps. Although our invention is
particularly applicable to the glass oil containers of lamps it may also be applied to
other glass liquid containers such for example as the glass oil containers of night
lights the glass water containers of flower stands the glass water bowls of stands the
glass oil cups of lubricators and the like.
We will describe our invention as applied to the metal mounts of the glass con-
tainer of a lamp.
The metal mounts of the said glass oil containers consist of a cup like shell
commonly called the bottom screw fixed at the base of the oil container the screwed
end of the said mount or bottom screw serving to connect the oil container with the
foot or base of the lamp.
The said bottom mounts are usually fixed to the glass containers by plaster of
Paris. By the use of this the ordinary method of attachment the mounts are liable
to get loose and hence much danger attends the use of an oil container when the
mounts have been attached in this way. By attaching the metal mounts to the glass
oil container according to our invention all liability to their accidental detachment
is obviated the mounts and oil container when connected together according to our
invention virtually forming one article.
According to our invention we make in the cup part of the base mount or bottom
screw by a shaping or turning process a series of deep preferably parallel lines or
depressions so as thereby to form in the inside of the cup part of the mount or
bottom screw a series of ring like ribs. The mould in which the container is to be
blown or moulded has in its bottom a recess of a size and shape suitable for the
reception of the said mount or bottom screw. The said metal mount or bottom
screw having been dropped into the recess in the bottom of the mould and the partially
ormed glass container being introduced into the open mould the said mould is
closed and maintained or fixed in its closed position while the workman blows the
partially formed glass container so as to make it take the figure of the mould. The
partially formed peg or projection at the bottom of the container is forced by the
blowing process into the metal mount or bottom screw and made to take the figure
of the interior of the said mount or bottom screw the plastic glass passing into and
filling up the spaces between the ring like ribs and also filling the troughs of the
screw thread at the bottom of the mount. The metal mount is thus fixed very firmly
to the bottom of the container the ribs in the cup part of the mount as well as the
ribs of the screw thread preventing the container being withdrawn or removed from
the mount.
Where the body of the glass container is made by the blowing process without the
use of a mould we make a peg on the bottom of the glass container and while the

page_text: said container is still supported on the blowing pipe we allow it to cool to such an
extent that its figure is not likely to be changed by gentle pressure. We invert the
container still on the blowing pipe so as to bring its bottom and peg uppermost.
We drop the metal mount on the peg and introduce into the said mount some melted
glass as strongly heated as is compatible with its manipulation. By means of a
cylindrical rod or pressing tool we press upon the molten glass and thereby cause it
to join the peg and fill the grooves in the mount and fix the said mount to the glass
container.
The blowing and pressing method described is also applicable to the attaching of
the glass oil or other container to the top of the metal pillar of the lamp or other
stand which in the case of the pressing process must be hollow for the introduction
of the pressing tool.
Figure 1 of the accompanying Drawing represents in side elevation and Figure 2
in vertical section an oil lamp the glass oil container of which is attached to the
bottom metal mount or bottoun screw according. Figure 3 represents in elevation the
bottom mount or bottom screw separately.
The same letters of reference indicate the same parts in the several Figures of the
Drawing.
a is the glass oil container of the lamp and 6 is the bottom metal mount or bottom
screw to which the glass peg or projection c (see Figure 2) at the bottom of the glass
container is attached according to our invention as herein before described dd are
the internal parallel ribs on the metal mount b and e is the screwed end of the metal
mount by which the glass container is screwed to the foot or stand f of the lamp.
By an examination of the section Figure 2 it will be seen that the glass peg.c at
the base of the oil container a has by the blowing process when the said glass peg
was in a plastic state been made to take the figure of the interior of the metal mount
or bottom screw b thereby filling the spaces between the internal ribs d d and also
filling the troughs of the screw e thus securely attaching the oil container to and
preventing its withdrawal from the mount. By the contraction of the metal mount
on cooling upon the peg c the attachment of the two parts is further secured.
The pressing process herein before described also secures the metal mount to the
glass peg of the container in the manner illustrated in the Drawing and the blowing
or pressing method is also as before stated applicable to the attaching of glass con-
tainers to the tops of the pillars of metal stands.
Having now particularly described and ascertained the nature of our invention
and the manner in which the same is to be performed we declare that we
claim as our invention :-
Attaching the glass oil or liquid containers of oil lamps and other articles to the
metal mounts of the same by the method herein before described and illustrated in the
accompanying Drawing that is to say by forcing the partially made peg or projection
on the bottom and underside of the glass container into and making it fill the metal
mount or top of the metal stand placed in the bottom of the mould by the blowing
and moulding operation by which the body of the container is made the said metal
mount being provided with internal ribs projections or screws for the purpose and
substantially as described and illustrated.
Also connecting the peg of the glass container made by blowing but without
moulding to the metal mount or top of the metal stand by the use of a separate
portion of molten glass forced into the grooves or depressions in the mount or top of
the stand by external pressure substantially as herein before described.
Dated the 13th day of December 1888.
W. T. WHITEMAN,
Agent for the Applicants.