Machines for Moulding, Pressing, and Shaping Clay and other Plastic Materials.
Year: 1892

page_text: Date of Application, 23rd Feb., 1892
Complete Specification Left, 18th Nov., 1892-Accepted, 23rd Feb., 1893
PROVISIONAL SPECIFICATION.
Machines for Moulding, Pressing, and Shaping Clay and other
Plastic Materials.
I CHARLES GORDON PICKING of Bounds Green Pottery New Southgate
Engineer do hereby declare the nature of this invention to be as follows:-
This invention has for its object to improve the construction and working of
machines for moulding and shaping clay or plastic materials and it has reference
principally to the manufacture of clay or plastic materials vessels of a hollow form
such as flower pots, vases, jars, cup pieces and similar shaped vessels.
It has been found that in existing machines, the clay or material used adheres
detrimentally to the plunger, dolly or mould used to form the inside or hollow part
of the vessel being shaped and to the mould which forms the outer shape, notwith-
standing that heating the mould and plunger using air or water pressure to eject
the article after being moulded have been employed.
To overcome this difficulty is the object of the present arrangement, and
according to this invention, the dolly or plunger, or mould are rotated at the same
time that it is being raised or lowered, by this improvement the mould and plunger
or dolly are kept free of the article being pressed and the work is turned out clean
and expeditiously.
I find that sometimes it is preferable to use separate metallic liners to the mould
one being placed in the mould before putting the clay or material in.
To this liner the article being shaped adheres, this liner can be made plain
fluted or ornamental and it is removed from the mould with the article when shaped
and when the article contracts in drying it becomes loose and can be readily
taken off.
In preparing the clay or material for the mould it can be made continuous
in the shape of a pipe by forcing the clay or material through an ordinary
pipe machine and cutting it off in lengths suitable prior to its being placed in
the mould.
Dated this 23rd day of February 1890
COMPLETE SPECIFICATION.
Machines for Moulding, Pressing, and Shaping Clay and other
Plastic Materials.
CHARLES GORDON PICKING of Bounds Green Pottery New Southgate
Engineer, 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:―
This invention has for its object to improve the construction and working of
machines for moulding and shaping clay or plastic material and it has reference
principally to the manufacture of clay or plastic material vessels of a hollow form
such as flower pots vases jars cup pieces and similar shaped vessels.
It has been found that in existing machines the clay or material used adheres
detrimentally to the plunger dolly or mould used to form the inside or hollow part
of the vessel being shaped and also to the mould which forms the outer shape
Price 8dl

page_text: Having now described the nature of my said invention and in what manner the
same is to be performed I declare that I claim is-
First. The dolly or plunger in combination with the means for working and
lubricating the same substantially as described.
Secondly. The use of thin sheet metal or paper liners in combination with the
moulds substantially as described.
Thirdly. The construction and arrangement of the machine for pressing articles
of clay or similar material substantially as described.
Dated this 14th day of November 1892.
CHARLES GORDON PICKING.