Improvements in and in the Manufacture of Decorative Lamps.
Year: 1892

page_text: Date of Application, 7th Dec., 1892
Complete Specification Left, 6th Sept., 1893-Accepted, 7th Dec., 1893
PROVISIONAL SPECIFICATION.
Improvements in and in the Manufacture of Decorative Lamps.
I WILLIAM ISIAH GEORGE LEWIS, of 12, Peel Street, Dresden, Stoke-on-
Trent, in the County of Staffs, Potters Modeller, do hereby declare the nature of
this invention to be as follows:-
My invention relates to improvements in and in the manufacture of decorative.
lamps for drawing-rooms, ball-rooms, conservatories or the like, and for such other
purposes wherein decorative effects and not high illumination, are the primary
objects, and consists in constructing such lamps of porcelain, parian, or china in
the manner hereinafter specified.
According to my invention I model a block of clay, or other suitable substance
to the form desired to be produced and from this is taken a plaster mould consisting
of one or more parts, according as the configuration or ornamentation of the model
may determine. The lamp itself is then cast by pouring slip or liquid clay into
the said mould, and allowing same to remain in the latter until the article has
acquired the requisite thickness, which is accomplished by the slip or liquid clay
adhering to the sides of the mould, the remaining or unattached slip or clay being
poured out therefrom.
The crust or adhering portion is then allowed to stand until it acquires a
sufficient firmness, when the interior is finished off by means of a piece of india-
rubber.
When the mass of clay has become perfectly hard and cool, it can, by reason of
the contraction consequent on the cooling, be removed from the mould and the
edges trimmed, when the lamp so formed will be ready for firing, which will be
performed in the ordinary manner.
After firing, the articles can be gilded or decorated in any desirable manner.
I can also decorate the lamp by producing lithophanic figures and ornaments in
relief while the article is in the mould.
'
I wish it to be distinctly understood, that I do not design my improved lamp
for the purpose of illumination proper but solely for decorative and analogous
purposes.
Dated this 7th day of December 1892
HUGHES, SON & Co.,
38, Chancery Lane, London, Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in and in the Manufacture of Decorative Lamps.
I WILLIAM ISIAH GEORGE LEWIS Potters Modeller of 18 Chester Street
Shieldfield Newcastle on Tyne 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 improvements in, and in the manufacture of decorative
lamps for drawing-rooms ball rooms conservatories or the like and for such other
purposes where decorative effects and not illumination are the primary objects
and consists in constructing such lamps of porcelaine parian or china in the manner
hereinafter specified.
According to my invention I model a block of clay or other suitable substance
to the form desired to be produced and from this is taken a plaster mould consisting
of one or more parts, according as the configuration or ornamentation of the model

page_text: may determine. The lamp itself is then cast by pouring slip or liquid clay into
the said mould, and allowing same to remain in the latter until the article has
acquired the requisite thickness which is accomplished by the slip or liquid clay
adhering to the sides of the mould, the remaining or unattached slip or clay being
poured out therefrom.
The crust or adhering portion is then allowed to stand until it acquires a
sufficient firmness when the interior is finished off, by means of a piece of india-
rubber.
When the mass of clay has become perfectly hard and cool, it can, by reason of
the contraction consequent on the cooling, be removed from the mould and the edges
trimed, when the lamp so formed will be ready for firing, which will be performed
in the ordinary manner.
After firing, the article can be guilded or decorated in any desirable manner.
I can also decorate the lamp by producing lithophanic figures and ornaments in
relief while the article is in the mould.
I wish it to be distinctly understood that I do not design my improved lamp
for the purpose of illumination proper but solely for decorative and analogous
purposes.
I do not confine myself to the decorative effects on the lamps alone, but on the
stand or container in combination with the shade. The lamp may be lighted by
electricity or other illuminant and may be painted in barbotine or enamel.
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. The introduction of porclean and other bodies used in potting for this kind of
decorative lamp, stands and containers.
2. The introduction of lithophanique figures views and ornament, barbotine and
enamel painting to give photographic effect.
3. That my lamps are made by a process not before used in the manufacture of
any circular lithophanique article they being cast and then finished by a profile
of pliable material in the interior and do not require any lever jolly or machine for
their manufacture.
Dated this 4th day of December 1893.
WILLIAM ISIAH GEORGE LEWIS.