IMPROVEMENTS IN APPARATUS TO BE USED IN MAKING GLASS BOTTLES OR GLASS WADE”
Year: 1882

page_text: LETTERS PATENT to Thomas Wood of Portobello in the County of Mid-
Lothian, North Britain, Glass Bottle Manufacturer for an Invention of
"IMPROVEMENTS IN APPARATUS TO BE USED IN MAKING GLASS BOTTLES OR
GLASS WADE”
PROVISIONAL SPECIFICATION left by the said Thomas Wood at the
Office of the Commissioners of Patents on the 26th January 1882.
THOMAS WOOD, of Portobello in the County of Mid-Lothian, North Britain,
Glass Bottle Manufacturer. "IMPROVEMENTS IN APPARATUS TO BE USED IN
MAKING GLASS BOTTLES OR GLASS WARE."
This Invention has for its object by means of a simple and convenient modifica-
tion of apparatus to effect an improvement in making certain kinds of glass bottles
and glass ware.
The "marver" as ordinarily used on which to roll the plastic glass to bring the
mass into a suitable form for blowing a bottle, is a piece of stone or an iron plate
having a flat upper surface. In cases in which a soft or strongly alkaline glass is
used, with which the ordinary rolling operation on a flat marver does not answer
satisfactorily, a kind of iron mould is used in which to shape the plastic glass; but
this apparatus cannot be used successfully with the strong mineral or silica glass of
which black bottles are generally made in this country.
marver,
The present Invention consists in modifying the marver so as to assist the
imparting of an improved form to the plastic glass and it is successfully applicable
with the strong mineral or silica glass as well as with other kinds. The improved
which may be made of stone or iron or other suitable material, is neither
flat on its upper surface nor in the form of a mould, but is made with a narrow
Alat rim or "cranny" part, along the side further from the blower or workman, and
the remaining part is made concave, the concavity being carried from side to side,
so that the blower can roll the plastic glass a sufficient distance from side to side
whilst the curvature of the surface enables him to make the glass take the desired
shape. In one modification the concavity merges, into a flat part at the inner side
such flat part being at a lower level than the cranny part, whilst in other
modifications the curved form is continued so as to rise again more or less towards
the inner side. The differences in the concavities are to suit different kinds of
glass or different forms which it may be desired to give the glass.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Thomas Wood in the Great Seal Patent Office on the 24th July
1882.
THOMAS WOOD, of Portobello, in the County of Mid-Lothian, North Britain, Glass
Bottle Manufacturer. "IMPROVEMENTS IN APPARATUS TO BE USED IN MAKING
GLASS BOTTLES OR GLASS WARE."
My said Invention has for its object by means of a simple and convenient
modification of apparatus to effect an improvement in making certain kinds of
glass bottles and glass ware.
"
The " marver as ordinarily used, on which to roll the plastic glass to bring the
mass into a suitable form for blowing a bottle, is a piece of stone or an iron plate
having a flat upper surface. In cases in which a soft or strongly alkaline glass is
used, with which the ordinary rolling operation on a flat marver does not answer
satisfactorily, a kind of iron mould or shaping block is used in which to shape the
plastic glass; but this apparatus cannot be used successfully with the strong silica
or mineral glass of which black bottles are generally made in this country.
"
My present Invention consists in modifying the marver so as to assist the
imparting of an improved form to the plastic glass in the operation of marvering
and forming the "pattison" and it is successfully applicable with the strong silica
or mineral glass as well as with other kinds. My improved marver, which
may be made of stone, or iron, or other suitable material, is neither flat
on its upper surface, nor in the form of a mould; but is made of the
form shown on the accompanying Sheet of explanatory Drawings. Figure 1,
of the Drawings is a plan or top view of my improved marver and Figure, 2,
is an end elevation. The marver is shown as set in the inclined position
in which it is generally used. It is made with a narrow flat rim or "cranny
part A, along the side of the top further from the workman or blower, and the
remaining part B, of the top is made concave, the concavity being continued from
end to end, so that the blower can roll the plastic glass a sufficient distance along
the marver, whilst the curvature of the surface enables him to make the glass
pattison take the desired shape. Modifications of the form of the concave part, B,
are shown by dotted lines, C, D, which indicate about the least and greatest
depressions of the concavity which will generally be found suitable in practice.
As shown in Figure, 2, the concavity merges into a flat part at the inner side such
flat part being at a lower level than the cranny part, A, but if preferred the
curved part may be continued so as to rise again more or less towards the inner
side or edge. The differences in the concavities are to suit different kinds of glass,
or different forms which it may be desired to give the glass.
With my improved form of marver the workman can more easily and
expeditiously than heretofore, give the plastic glass or pattison the desired shapo
for blowing glass bottles or other glass vessels of uniform thickness.
For the strong silica or mineral glass of which bottles are generally made in this
country I prefer to use a stone marver with a concavity shaped as in the Drawings.
For the softer and more alkaline glasses and for special purposes marvers may be
used having the curvature of the concavity continued so as to rise again more or
less at the inner part.
Having thus particularly described my said Invention and the manner of
performing the same I have to state that I do not restrict myself to the precise
details herein described or delineated but that what I believe to be novel and

page_text: original and claim as the Invention secured to me by and in terms of the herein-
before in part recited Lotters Patent is :-
The constructing of marvers used in making glass bottles or glass ware of the
improved form hereinbefore described and shown in the accompanying Drawings,
and more particularly with the concavity, B, in the top of the marver and extending
from end to end.
In witness whereof I, the said Thomas Wood, have hereunto set my hand
and scal this Nineteenth day of July in the year of our Lord One
thousand eight hundred and eighty-two.