Improvements in Potters' Ovens.
Year: 1893

page_text: Date of Application, 26th Aug., 1893
Complete Specification Left, 23rd May, 1894--Accepted, 26th Sept., 1894
PROVISIONAL SPECIFICATION.
Improvements in Potters' Ovens.
JOHN GRATTON Potters Fireman 8 Rushton Road Burslem Staffordshire do
hereby declare the nature of this invention to be as follows:-
Drawing No. 1. The white spaces show new design for the formation of the
flues. The enclosed spaces filled in with cross lines show the flue sides or
mid-feathers.
Drawing No. 2 shows new design for covering the flues.
This new design of a potters oven bottom may be applied to all potters round
kilns and ovens.
Improvements in Potters' Ovens.
JOHN GRATTON Potters Fireman 8 Rushton Road Burslem Staffordshire do
hereby declare the nature of this invention and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement:-
My invention is an improvement in potters oven construction and is only
applicable to that part of a potters oven known as a potters oven bottom.
In the following description reference is made to the accompanying two sheets
of drawings marked No. 3 & 4 Nos. 1 & 2 being filed with my Provisional
Specification.
A potters oven bottom consists of flues or passages which convey the smoke and
sulpherous fumes and heat from the mouths or fireplaces; the mouths are shown
at A Drawing No. 3 and E Drawing No. 4.
The flues are formed of brick walls and are four and a half inches wide and
twelve inches deep; and the passage about four inches wide.
The leading or principal flue as shown at G Drawing No. 4 is a direct passage
from the mouth to a cavity or "well-hole" which about twelve inches deep and
twelve inches wide-see F Drawing No. 4.
When the oven is full of seggers and their contents, this cavity acts as the base
of a chimney and is an outlet for the smoke and sulpherous gases to pass out at
the top as shown at B Drawing No. 3.
The off or side flues as shown at K Drawing No. 4 are connected with the
principal or direct flues by bevelled junctions as indicated at H Drawing No. 4 and
when the oven bottom is new and in good condition receive their share of the
smoke and heat, from a circular flue at the outer boundary of the oven bottom as
shown at C Drawing No. 4.
These off or side flues are opposite the pillars or columns of the oven-as shown
at D Drawing No. 4-and are not available for the same inspection as the principal
or direct flues and any imperfect brick-work from these off or side flues endangers
the ware or goods and causes uncertain results in pottery manufacture.
The white spaces-as shown in Drawings No. 1 and No. 4 show the flues and the
filled-in spaces with cross lines show the flue sides or "mid-feathers."

page_text: 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
1. A new and improved construction of the flues and "mid-feathers" of a
potters oven bottom.
2. A new and improved passage for the smoke and sulpherous gases to be carried
away and a new and improved method for the equal distribution of heat.
3. That it is constructed with new shaped bricks or quarries and possesses a new
and firmer bearing for the contents of the oven and is suitable for any size of
potters round kilns or ovens.
Dated this 22nd day of August 1894
JOHN GRATTON.