Year: 1887

page_text: Date of Application, 18th Feb.,. 1887
Complete Left, 17th Nov., 1887
Complete Accepted, 20th Dec., 1887
I, JOHN HOWIE of Hurlford in the County of Ayr, Firoclay Manufacturer, do
hereby declare the nature of this invention to be as follows :-
My invention relates to an improved doughing tub or trough for use by bakers
and others for mixing and preparing batches of dough the trough under the invention
being composed of fire clay or earthenware upon the interior or interior and exterior
of which is formed a coating of glaze or enamel. The fire clay or earthenware is
moulded or shaped to any of the various forms of the ordinary wooden troughs in
use, and the glaze or enamel applied by dipping or otherwise, the trough being fired
in a kiln in a manner analogous to that practiced in the manufacture of enamelled
ware.
In the bottom or in the bottom and sides of the trough a flue space or spaces or
channels may be formed for the circulation therethrough of hot water or air or for
the insertion of heating pipes or irons whereby the material of which the trough is
composed may be slightly heated to promote fermentation of the batch of dough in
the trough or to prevent retardation of the fermenting process which might be apt
to occur by contact of the dough with the cold surface of the trough.
11
1000
CRUIKSHANK & FAIRWEATHER,
62, Saint Vincent Street, Glasgow,
Agents.

page_text: I, JOHN HOWIE of Hurlford in the County of Ayr, Fireclay Manufacturer 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 relates to an improved doughing tub or trough for use by bakers
and others for mixing and preparing batches of dough the trough under the invention
being composed of fire clay or earthenware upon the interior or interior and exterior.
of which is formed a coating of glaze or enamel. The fire clay or earthenware is
moulded or shaped to any of the various forms of the ordinary wooden troughs in
use, and the glaze or enamel applied by dipping or otherwise, the trough being
fired in a kiln in a manner analogous to that practiced in the manufacture of
enamelled ware.
In the bottom or in the bottom and sides of the trough a flue space or spaces or
channels may be formed for the circulation therethrough of hot water or air or for
the insertion of heating pipes or irons whereby the material of which the trough is
composed may be slightly heated to promote fermentation of the batch of dough in
the trough or to prevent retardation of the fermenting process which might be apt to
occur by contact of the dough with the cold surface of the trough.
In the accompanying drawings figure 1 is a plan illustrating a doughing tub or
trough composed of two pieces jointed together at A with cement or similar material
and figure 2 is a cross section of the same. Figure 3 is a cross section showing a
tub or trough having a double cased bottom with channels or flues B formed therein
for the purpose above mentioned. The tubs or troughs may be made each in a single
piece or of two or more pieces jointed together.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is
1. A doughing trough or tub composed of fire clay or earthenware coated with
glaze or enamel substantially as described.
2. A doughing trough or tub composed of glazed or enamelled fire clay or
earthenware and having formed in its bottom or bottom and sides flue spaces or
channels substantially as and for the purpose set forth.
Dated this Sixteenth day of November 1887.
CRUIKSHANK & FAIRWEATHER,
62, Saint Vincent Street, Glasgow,
Agents.