IMPROVEMENTS IN MACHINERY OR APPARATUS FOR MOULDING OR SHAPING PLASTIC MATERIALS
Year: 1877

page_text: LETTERS PATENT to Richard Cosslett, the younger, of Elgin Park, Redland,
Bristol, for the Invention of "IMPROVEMENTS IN MACHINERY OR APPARATUS
FOR MOULDING OR SHAPING PLASTIC MATERIALS."
Sealed the 8th March 1878, and dated the 19th December 1877.
PROVISIONAL SPECIFICATION left by the said Richard Cosslett at the
Office of the Commissioners of Patents on the 19th December 1877.
RICHARD COSSLETT, the younger, of Elgin Park, Redland, Bristol. " IMPROVE-
MENTS IN MACHINERY OR APPARATUS FOR MOULDING OR SHAPING PLASTIC
MATERIALS."
- "f
My Invention relates to machinery or apparatus for moulding, embossing,
recessing, or otherwise shaping clay or other plastic materials, and it consists in
the employment for that purpose of rocking or rolling pressure in the manner
herein-after described.
In carrying out my Invention I employ a convex plate or former of any suitable
sweep or radius, to which I impart motion so as to cause it to rock backwards and
forwards over the clay or other plastic material to be moulded, embossed, recessed,
or otherwise shaped.
The clay or other plastic material is placed underneath on a bed or in a mould,
as may be found most convenient.
The convex plate or former is arranged with guides, racks, stops, or other suitable
devices in order to secure uniform action, so that by depressing and elevating a
handle or handles the plate or former is caused to rock forwards and backwards
over the clay or other plastic material employed.
The convex plate or former is made of sufficient weight, or sufficiently weighted
or otherwise held down to impress the material under treatment.

page_text: The surface of the convex plate or former may be made of any suitable materials,
and moulded to any shape or pattern, or embossed or recessed to any design
suitable or considered desirable.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Richard Cosslett in the Great Seal Patent Office on the 17th June
1878.
RICHARD COSSLETT, the younger, of Elgin Park, Redland, Bristol.
"IMPROVE-
MENTS IN MACHINERY OR APPARATUS FOR MOULDING OR SHAPING PLASTIC
MATERIALS."
My Invention relates to machinery or apparatus for moulding, embossing,
recessing, or otherwise shaping clay or other plastic materials, and it consists in the
employment for that purpose of rocking or rolling pressure in the manner herein-
after described.
In carrying out my Invention I employ a convex plate or former of any suitable
sweep or radius, to which I impart motion so as to cause it to rock or roll back-
wards and forwards over the clay or other plastic material to be moulded, embossed,
recessed, or otherwise shaped.
The dry or other plastic material is placed underneath on a bed, or in a mould, as
may be found most convenient.
The convex plate or former is arranged with guides, racks, stops, or other suitable
devices, in order to secure uniform action, so that by depressing and elevating a
handle or handles the plate or former is caused to rock or roll forwards and back-
wards over the clay or other plastic material employed.
The convex plate or former is made of sufficient weight, or is sufficiently
weighted or otherwise held down to impress the material under treatment.
The surface of the convex plate or former may be made of any suitable materials,
and moulded to any shape or pattern, or embossed or recessed to any design suitable
or considered desirable.
Having thus far described the nature of the said Invention, and incidentally inti-
mated in what manner the same is to be performed or carried out in practice, I will
now proceed (aided by the accompanying Drawings), to further and particularly
describe and ascertain in what manner the same is to be performed or carried out in
practice, that is to say :—
DESCRIPTION OF THE DRAWINGS.
Fig. 1 represents side view of my improved apparatus or machinery for moulding,
embossing, or shaping plastic materials; Fig. 2, front view.
A is the convex plate or former, to which a rocking or rolling motion is imparted
by elevating or depressing a handle or handles D, or by other suitable means. B,
convex rack, and B' fixed rack. C, bed or mould underneath the plate or former
A, on which the material required to be moulded or shaped is placed. E, weight

page_text: attached to apparatus for holding down the plate A in order to make sufficient
impression upon the material operated upon.
The convex plate A may be made of the form shewn in the Drawings, or of other
suitable shape or design.
Although the Drawings show arrangements for effecting rocking or oscillating
motion only, it is obvious that complete circular motion could be arranged for if
desired.
Having now particularly described and ascertained the nature and object of
the said Invention, and in what manner the same is to be performed or carried out
in practice, I hereby declare that I claim the said Invention of " Improvements in
Machinery or Apparatus for Moulding or Shaping Plastic Materials," substantially
as herein-before set forth and described, and in which Invention the peculiar and
important feature is the use or adoption of arrangements for securing rocking, or
backwards and forwards, or rolling action over the clay or plastic material.
In witness whereof, I, the said Richard Cosslett, the younger, have
hereunto set my hand and seal, this Eighth day of June, in the year
of our Lord One thousand eight hundred and seventy-eight.
RICHARD COSSLETT, JUN". (LS.)
Witness,
T. MORGAN,
Secretary,
Inventors' Patentright Ass"., Lª.,
21, Cockspur Street, S.W.