IMPROVEMENTS IN THE PRODUCTION OF MODELS, DESIGNS, OR PATTERNS FOR VARIOUS ARTISTIC AND USEFUL PURPOSES
Year: 1878

page_text: LETTERS PATENT to George Stephenson, of Leamington, in the County of
Warwick, Designer, for the Invention of "IMPROVEMENTS IN THE PRODUCTION
OF MODELS, DESIGNS, OR PATTERNS FOR VARIOUS ARTISTIC AND USEFUL
PURPOSES."
led the 14th March 1879, and dated the 28th September 1878.
"
PROVISIONAL SPECIFICATION left by the said George Stephenson at the
Office of the Commissioners of Patents on the 28th September 1878.
GEORGE STEPHENSON, of Leamington, in the County of Warwick, Designer.
IMPROVEMENTS IN THE PRODUCTION OF MODELS, DESIGNS, OR PATTERNS FOR
VARIOUS ARTISTIC AND USEFUL PURPOSES."
This Invention consists in producing models, desigus, or patterns for the use of
photograpers, silversmiths, and other workers in metal or glass, china, or other plastic.
materials, leather, wood, and stone.
I take a thick card or a sheet of any soft metal, and with a specially shaped knife
I cut any suitable design partially through the card or metal obliquely, and by a
turn of the knife whilst cutting I throw out the surface of the cut so as to form
it into a projection upon the surface of the card or metal.
This plate then forms the model from which a photographer takes his negative,
and from that negative any number of positives which have the effect of a design
in light and shade, the shade being given by the raised parts of the cutting.
Plaster casts or casts in sand may be taken from these cut designs, and may be
used as patterns for metal workers, or workers in plastic or fictile materials, and
these casts may be electrotyped and form moulds for other artificies, whilst for
workers in wood or stone such cut designs would form models from which to carve.
The same art of cutting the design up from the surface may be used on leather for
the production of ornamental leather work.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said George Stephenson in the Great Seal Patent Office on the 27th
March 1879.
GEORGE STEPHENSON, of Leamington, in the County of Warwick, Designer.
"IMPROVEMENTS IN THE PRODUCTION OF MODELS, DESIGNS, OR PATTERNS FOR
VARIOUS ARTISTIC AND USEFUL PURPOSES."
My Invention consists in producing models, designs, or patterns for the use of
photographers, silversmiths, and other workers in metal or glass, china, or other
plastic materials, leather, wood, and stone.
I take a thick card or a sheet of any soft metal, and with a specially shaped knife
I cut any suitable design partially through the card or metal obliquely, and by a
turn of the knife whilst cutting I throw out the surface of the cut so as to form it
into a projection upon the surface of the card or metal. The knives I employ
have short blades, the principal forms being a blade rounded at the end from the
edge towards the back, another convex at the edge and concave at the back,
another having the end ground concave, both edge and back, and another with
the end rounded nearly semicircular.
This plate when cut forms the model from which a photographer takes his
negative, and from that negative any number of positives, which have the effect
of a design in light and shade, the shade being given by the raised parts of the
cutting.
Plaster casts, or casts in sand may be taken from these cut designs, and may be
used as patterns for metal workers, or workers in plastic or fictile materials; and
these casts may be electrotyped and form moulds for other artificers, whilst for
workers in wood or stone such cut designs would form models from which to carve.
The same art of cutting the design up from the surface may be used on leather for
the production of ornamental leather work.
Having thus described the object and nature of my said Invention, and the
manner in which the same is to be carried into effect, I claim, without limiting myself
to these precise details, the improvements in the production of models, designs, or
patterns for various artistic and useful purposes, substantially as herein set forth
and specified.
In witness whereof, I, the said George Stephenson, have hereunto set my
hand and seal, this Twenty-fourth day of March, in the year of our Lord
One thousand eight hundred and seventy-nine..
GEORGE STEPHENSON. (L.S.)