An Improved Oven for Burning or Fusing Lettering, Designs, Colours, and the like Into or Upon Articles of Glass, Earthenware, and other Glazed or Enamelled Goods.
Year: 1896

page_text: Date of Application, 25th Feb., 1896
Complete Specification Left, 25th Nov., 1896-Accepted, 30th Jan., 1897
PROVISIONAL SPECIFICATION.
An Improved Oven for Burning or Fusing Lettering, Designs,
Colours, and the like Into or Upon Articles of Glass, Earthenware,
and other Glazed or Enamelled Goods.
I FRANK ALBRECHT of 6 York Buildings, Dale Street, Liverpool, in the
County of Lancaster, Agent and Commission Merchant, do hereby declare the
nature of this invention to be as follows:-
My said invention relates to an improved oven for burning or fusing lettering,
designs, colours and the like into or upon articles of glass, earthenware and other
glazed or enamelled goods and is intended more particularly for use in carrying
into effect the manufacture or process for the production of designs, lettering and
the like upon glass, for which Letters Patent No. 13838 of 1893 were granted to
Wenzel Knapp.
The improved oven constituting my present invention consists primarily of a
square or other suitably shaped box or casing made of sheet metal plates which
may be united and strengthened at the corners and other parts by angle iron bars.
This oven is cased in a brick setting, a space or flue being left all round to allow
of the circulation of the heated products of combustion. In front I arrange a
pair of doors with double action lever bolt and drop handle or other means of
securing the same. The oven is mounted upon a firebrick setting or saddle
supported if necessary by metallic girders. The furnace is situated beneath the
oven and is furnished with the usual door and ash aperture. Doors are also fitted
in the front of the brick work to allow of the cleansing of the surrounding flue or
flues. The products of combustion from the furnace pass round the oven and
make their escape by a chimney in front. The said chimney may consist of an
iron pipe capable of being utilised for heating purposes. Access to the oven is
obtained through the double doors already mentioned. The glass or other
articles to be treated are placed in the oven, the several layers or stacks of articles
being separated by loose removable perforated horizontal sheets of metal, the
perforations allowing free circulation of the heat to all parts of the oven.
When the contents of the oven have been sufficiently fired, they can be removed
through the double doors and replaced by a fresh set of articles.
Dated the 24th day of February 1896.
COMPLETE SPECIFICATION.
An Improved Oven for Burning or Fusing Lettering, Designs,
Colours, and the like Into or Upon Articles of Glass, Earthenware,
and other Glazed or Enamelled Goods.
I FRANK ALBRECHT of 5 Rumford Place, late of 6 York Buildings, Dale
Street, Liverpool, in the County of Lancaster, Agent and Commissiou Merchant,
do hereby declare the nature of this invention and in what manner the same is to
Price 8d1

page_text: be performed to be particularly described and ascertained in and by the following
statement and accompanying drawings:-
My said invention relates to an improved oven for burning or fusing lettering,
designs, colours and the like into or upon articles of glass, earthenware and other
glazed or enamelled goods and is intended more particularly for use in carrying
into effect the manufactures or processes for the production of designs, lettering
and the like upon glass in accordance with the Specifications of Letters Patent
No. 13838 of 1893 and No. 24283 of 1895 of both of which Patents I am the
registered proprietor.
The improved oven constituting ny present invention consists primarily of a
square or other. suitably shaped box or casing made of sheet metal plates which
may be united and strengthened at the corners and other parts by angle iron bars.
This oven is cased in a brick setting, a space or flue being left all round to allow
of the circulation of the heated products of combustion. In front I arrange a
pair of doors with double action lever bolt and drop handle or other means of
securing the same. The oven is mounted upon a firebrick setting or saddle
supported if necessary by metallic girders. The furnace is situated beneath the
oven and is furnished with the usual door and ash aperture. Doors are also
fitted in the front of the brick work to allow of the cleansing of the surrounding
flue or flues. The products of combustion from the furnace pass round the oven
and make their escape by a chimney in front. The said chimney may consist of
an iron pipe capable of being utilised for heating purposes. Access to the oven is
obtained through the double doors already mentioned. The glass or other articles
to be treated are placed in the oven, the several layers or stacks of articles being
separated by loose removable perforated horizontal sheets of metal, the perforations
allowing free circulation of the heat to all parts of the oven.
When the contents of the oven have been sufficiently fired, they can be removed
through the double doors and replaced by a fresh set of articles.
To render the construction of my improved oven more clear I will give a
detailed description of the same supplemented by the annexed two sheets of
illustrative drawings.
Fig. 1. is a front view of the oven.
Fig. 2. is a longitudinal section at the line A B Fig. 1.
Fig. 3. is a cross section at the line C D Fig. 2.
The oven proper or enclosure in which the articles are treated consists of a box a
composed of any suitable material for example of sheet iron and connected at the
corners by angle irons as shown. This box a is furnished with a double door in
front, composed of two halves bb the front of the box carrying a frame c to which
the doors are hinged. The box a rests on a fireclay sole d the box and sole being
supported by "double L" girders e extending from front to back of the oven and
appearing most clearly in section in Fig. 3. These girders may be supported by
front and back bearers or by inserting into the brick work. Beneath the oven door
frame is a frout plate containing the furnace door g and an ash hole through
which the ashes are withdrawn.
The fuel is consumed on the furnace bars i which are supported by back and
front bearers as shown. The box a is entirely surrounded and enclosed by brick
work ka flame space or flue l existing round the sides and back of the box as
plainly shown in the drawings. The smoke and gaseous products of combustion
after passing round and heating the box, as shown by the arrows escape by the
chimney or smoke pipe m, a damper n being used to regulate the draft and thereby
increase or diminish the temperature of the oven. A thermometer may be fixed
on the front of the oven to indicate the temperature. For the purposes of
inspecting and cleansing the flues I form holes in the front wall the said holes
being closed by stoppers o, which appear in Fig. 1. The flues or spaces surrounding
the box are preferably lined with fireclay bricks so as to withstand the heat
better.

page_text: When in operation the heat from the furnace circulates around and behind the
box a thoroughly heating the same, the smoke and spent gaseous products of
combustion escaping as aforesaid through the chimney m.
The methods of storing and burning the articles to be treated in the oven vary
with the nature of the articles. For instance in the case of such goods as glass
tumblers, glasses, bottles and the like, I arrange the first lot on the floor of the
box a as indicated for example in Fig. 3. where glass tumblers are represented
and marked p. Upon the top of the bottom lot of tumblers I place a loose shelf r
of perforated metal or other suitable pervious material which will let the heat
pass freely. Upon the shelf r I place another lot of tumblers and lay a second
foose shelf thereon. The next lot of tumblers support a third shelf r 2 and so
on till the box a is completely filled.
Before being placed in the oven the goods whether of glass, earthenware or
other glazed or enamelled materials are stamped, printed or otherwise caused to
receive designs, lettering and the like either plain or in colours in accordance
with the manufacture or process in respect of which the hereinbefore cited Letters
Patent Nos. 13838 of 1893 and 24283 of 1895 were granted.
The heat to which goods so treated are subjected in my improved oven causes
the said designs or lettering to become burned into the glass.
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 improved oven for the purposes and substantially as hereiubefore described
and illustrated.