IMPROVE- MENTS IN OR CONNECTED WITH THE MANUFACTURE OF TUMBLERS, GOBLETS, WINE GLASSES, LAMP CHIMNEYS, AND OTHER ANALOGOUS ARTICLES MADE OF GLASS
Year: 1883

page_text: LETTERS PATENT to John Thomas Haden Richardson, of Hatton, in the
County of Derby, Flint Glass Manufacturer for an Invention of "IMPROVE-
MENTS IN OR CONNECTED WITH THE MANUFACTURE OF TUMBLERS, GOBLETS,
WINE GLASSES, LAMP CHIMNEYS, AND OTHER ANALOGOUS ARTICLES MADE OF
GLASS
"
↓
PROVISIONAL SPECIFICATION left by the said John Thomas Haden
Richardson at the Office of the Commissioners of Patents on the 7th June
1883.
JOHN THOMAS HADEN RICHARDSON, of Hatton, in the County of Derby, Flint
Glass Manufacturer, "IMPROVEMENTS IN OR CONNECTED WITH THE MANUFACTURE
OF TUMBLERS, GOBLETS, WINE GLASSES, LAMP CHIMNEYS, AND OTHER ANALOGOUS
ARTICLES MADE OF GLASS
"
This Invention relates to certain improvements in or connected with the
manufacture of tumblers, goblets, wine glasses, lamp chimneys, and other
analogous articles made of glass, and which require the ends or edges of the
rims or like parts to be rounded and formed even and smooth.
It has been hitherto usual to form such edges on blown glass articles, by
shearing or cracking off the uneven edges of the partly manufactured article and
afterwards melting and manipulating the edge of the rim in a furnace or lamp.
To remedy the defects attendant upon this process attempts have been made to
give the desired formation to the edges by means of a glass cutter's wheel which
is usually arranged vertically and has a smooth or level surface, but the result
attained has not been satisfactory, the edges being left too flat and not being
properly or sufficiently rounded.
The object of the present improvements is to give to the edges of the articles
a smooth and even rounded surface similar and equal to that produced in the
ordinary way by the most skilled and highly paid workmen at the furnace, by
simple means which need only comparatively unskilled and less expensive workmen,
and do not necessitate the use of a furnace.

page_text: According to one modification of attaining the said object, there are used wheels,
which on their acting faces have annular grooves or rings turned in them, or
formed on them by raised ridges or parts, the grooves being of about the size and
shape of the edge required to be given to the glass articles. The wheels may be
made of stone, metal, emery, or of any other suitable substances, and they may be
set horizontally, vertically, or at an inclination, and may have motion suitably
imparted to them; and their acting faces in which the grooves are formed may be
made flat, convex, or concave.
According to another modification, the same object is obtained by the use of
wheels formed with a plain surface but of, a pliable material which would yield
to any sufficient pressure of the article on its surface, and so produce the rounded
edges required; emery or other suitable cutting material being if required used
on their acting faces or incorporated with the substance of the wheels for facilitating
the action.
After being thus cut or formed to an even rounded surface, the glass article is
polished in a similar way by the usual appliances.

page_text: :
SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said John Thomas Haden Richardson in the Great Seal Patent
Office on the 7th December 1883.
JOHN THOMAS HADEN RICHARDSON, of Hatton, in the County of Derby, Flint
Glass Manufacturer. "IMPROVEMENTS IN OR CONNECTED WITH THE MANUFACTURE
OF TUMBLERS, GOBLETS, WINE GLASSES, LAMP CHIMNEYS AND OTHER ANALOGOUS
ARTICLES MADE OF GLASS."
This Invention relates to certain improvements in or connected with the
manufacture of tumblers, goblets, wine glasses, lamp chimneys, and other analogous
articles made of glass, and which require the ends or edges of the rims or like
parts to be rounded and formed even and smooth.
It has been hitherto usual to form such edges on blown glass articles, by
shearing or cracking off the uneven edges of the partly manufactured article, and
afterwards melting and manipulating the edges of the rim in à furnace or lamp.
To remedy the defects attendant upon this process, attempts have been made to
give the desired formation to the edges by means of a glass-cutter's wheel which
is usually arranged vertically and has a smooth or level hard surface, but the
result attained has not been satisfactory, the edges being left too flat and not be
properly or sufficiently rounded.
The object of the present improvements is to give to the edges of the articles
a smooth and even rounded surface similar and equal to that produced in the
ordinary way by the most skilled and highly paid workmen at the furnace, by
simple means which need only comparatively unskilled and less expensive workmen
and do not necessitate the use of a furnace.
One modification of attaining the said object is illustrated on the accompanying
drawings in Figs 1, 2, and 3, which are respectively perspective, sectional and
front views. This modification consists in the use of rings, discs, or wheels 1,
which on their acting faces have one or more annular grooves 2, turned in them,
or formed in or on them by or between raised ridges or parts or otherwise, the
grooves being of about the diameter of the glass article 4, and of about the size
and shape of the edge required to be given thereto. The rings, discs, or wheels,
or their equivalents, may be made of stone, metal, emery, or of any other suitable
substance or composition in any suitable manner, and they may be set horizontally,
vertically, or at an inclination, on the spindle of a lathe, or may be attached to
any other suitable means 3. capable of imparting a revolving motion to them,
and their acting faces in which the grooves 2, are formed, may be made flat,
convex, or concave.
According to another modification of the present improvements, the same object
is obtained by the use of revolving rings, discs, wheels, or their equivalents, made
of any suitable pliable, flexible, or elastic material, such, for example, india-rubber,
or any suitable composition, and formed with a plain flat, convex, or concave
surface, upon which there is spread (or there is incorporated or combined with the
substance of the wheels) emery or any other suitable cutting material. Thus, by
the pressure of the glass article against the revolving cutting disc, ring, or wheel,
the acting face thereof yields to the pressure and gives the required even and
smooth rounded edge to the ends or edges of the article.
In lieu of having the glass article held stationary or nearly so, and the said
rings, discs, or wheels revolving, the latter or any equivalent thereof such as
segments, may be stationary, and the articles to be operated on may be caused to
revolve.

page_text: After the ends or edges of the glass articles have been thus cut or formed with
an even rounded surface, the article is or may be polished in a similar way by the
usual appliances.
Having thus particularly described and ascertained the nature and object of
my said Invention, and in what manner the same is to be or may be performed
or carried into practical effect, I would observe in conclusion that what I consider
to be novel and original and therefore claim as constituting the Invention secured
to me by the hereinbefore in part recited Letters Patent is :-
1. The application and use of grooved rings, dises, wheels, or their equivalents,
substantially as and for the purpose herein before described.
2. The application and use of yielding rings, discs, wheels, segments, or their
equivalents, substantially as and for the purpose herein before described.
In Witness whereof, I, the said John Thomas Haden Richardson, have hereunto
set my hand and seal, this 6th day of December in the year of our Lord, One
thousand eight hundred and eighty three.
JOHN, THOMAS, HADEN, RICHARDSON (L.S.)
Witness.
CHARLES AUBREY DAY. Fel; Inst. P.A.
Office for Patents. Trade Marks & Designs.
321. High Holborn, London, W.C.