Improvements in Dies or Mouth-pieces for Moulding or Shaping Clay and other Plastic Substances.
Year: 1894

page_text: Date of Application, 25th June, 1894
Complete Specification Left, 21st Mar., 1895-Accented, 11th May, 1895
PROVISIONAL SPECIFICATION.
Improvements in Dies or Mouth-pieces for Moulding or Shaping
Clay and other Plastic Substances.
I, DAVID Lewis, of No. 50 Brecon Road, Merthyr Tydfil, in the County of
Glamorganshire, Mechanical Engineer, do hereby declare the nature of this
invention to be as follows:-
This invention has reference to a construction of die or mouth-piece adapted for
use in a machine designed to form clods of clay or other plastic material for
conversion into bricks, blocks or other articles of various sizes.
According thereto, my die is constructed of a number of sections or parts, con-
veniently four, of suitable hard material, such as cast iron or brass, which, or some of
which, are adjustably mounted on the flange or outer face of a conical mouth piece,
and are arranged to overlap each other as seen in end view or cross section, the
arrangement being such that by suitably adjusting the said sections or parts
towards or from each other, the cross sectional area and shape of the die passage
formed by and between them can be readily altered so as to enable clods of different
cross sections to be made by the same die according to requirement. The said
sections or parts may conveniently be secured to the conical mouth-piece by pin
and slot connections and be provided with setting up screws to facilitate their
adjustment. The mouth-piece is secured or adapted to be secured to the delivery
end of a pugging or mixing machine of the kind herein before referred to.
The said die sections or parts, which may be made with or without a steam
jacket or case, are or may advantageously be so formed that the die passage formed
by and between them, will, starting from the end where it communicates with the
conical mouth-piece, be parallel for a portion of its length and be succeeded by a
portion that gradually and slightly increases in cross sectional area towards the
delivery end. The lengths of the parallel portion, and the taper and length of the
delivery portion can be varied to suit requirement.
A die constructed as described in addition to enabling clods of various sizes to be
produced at will therewith, possesses the further advantages that it will deliver a
clod that is stiff and free from cracks, and can be pressed at once into bricks, or
cut by wires into bricks or blocks; that lubrication of the clod may be dispensed
with, thus saving the cost of oil, and that on account of the clods being stiff, much
time is saved in drying, on the drying floors, the bricks or other articles produced
therefrom. Furthermore the die is economical in use, as it will require little or no
repairs; it can be easily set or adjusted; and one die will serve for many different
sizes of cluds or bricks.
01 1 1801

page_text: Improvements in Dios or Mouth-pieces for Moulding or Shaping
Clay and other Plastic Substances.
I, DAVID LEWIS, of No. 50, Brecon Road, Merthyr Tydfil, in the County of
Glamorganshire, Mechanical 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 reference to a construction of die or month-piece adapted for
use in a machine designed to form clods of clay or other plastic material for
conversion into bricks, blocks, or other articles of various sizes.
According thereto, my die is constructed of a number of sections or parts,
conveniently four, of suitable hard material, such as cast iron or brass, which,
or some of which, are adjustably mounted on the flange or outer face of a
conical mouth-piece, and are arranged to overlap each other as seen in end view
or cross section, the arrangement being such that by suitably adjusting the said
sections or parts towards or from each other, the cross sectional area and shape of
the die passage formed by and between them can be readily altered so as to enable
clods of different cross sections to be made by the same die according to require-
ment. The said sections or parts may conveniently be secured to the conical
month-piece by pin and slot connections and be provided with setting up screws
to facilitate their adjustment. The mouth-piece is secured or adapted to be
secured to the delivery end of a pugging or mixing machine of the kind herein-
before referred to.
n
The said die sections or parts, which may be each made with or without a steam
jacket or case, are or may advantageously be so shaped that the die passage
formed by and between them, will, starting from the end where it communicates
with the conical month-piece, be parallel for a portion of its length and be succeeded
by a portion that gradually and slightly increases in cross-sectional area towards
the delivery end, as in the construction of die or mouth-piece described in the
Specification of another Application for Letters Patent filed by me dated 1 May
1894 No. 8640. The length of the parallel portion, and the taper and length of the
delivery portion can be varied to suit requirement.
In the accompanying illustrative drawings,
Fig. is a plan, Fig. 2 a front elevation, Fig. 3 a side elevation, and Fig. 4 a
longitudinal vertical section, showing a die or mouth-piece constructed according to
this invention.
In the example shewn,, the die is composed of four sections A, B, C and D
of metal such as cast iron, each of them consisting of four walls or plates, of
which one serves to form one side of the die, another as a means of attachment
to a carrier, and the other two as strengthening ribs or flanges. Three of the
sections, rit. -A, B, and C are adjustably mounted on the flange or outer
Ence of a conical mouth-piece E, by means of bolts F, which pass through
slots G in the sections A, B, and C, and through corresponding holes in the
flange E, the other section D being adjustably secured to the flange E' by
bolts 1. For the sections A and C, the holes H in the flange E' are plain ronni
holes in which the bolts are fitted, but for the section B, a hole in the
form of a horizontal slot, shown in dotted lines in Fig. 2, is provided. As will
be seen from Fig. 2, the slots G of the sections A and C are arranged to
allow these sections to be adjusted along the face and one side respectively of the
fixed section D, whilst the slots G of the section B and the slot H in the flange E
allow of the adjustment of this section into any position corresponding to that of
the sections A and C. Thus it will be readily seen that the width and height of

page_text: the die passage J formed by and between the sections A, B, C, D, can be readily
varied to suit different requirements from time to time. The die passage J is
of the shape described in my said former Specification, that is to say, its internal
cross-sectional area is uniform from K, where it communicates with the conical
mouth-piece E, to L (see Fig. 4), a distance which is considerable relatively to the
length of the die, whilst from L to M at the delivery end, it very slightly
increases.
A die constructed, as described, in addition to enabling clods of various sizes to
be produced at will therewith, possesses the further advantages that it will deliver
a clod that is stiff and free from cracks, and can be pressed at once into bricks, or
cut by wires into bricks or blocks; that lubrication of the clod may be dispensed
with, thus saving the cost of oil; and that on account of the clods being stiff, much
time is saved in drying, on the drying floors, the bricks or other articles produced
therefrom. Furthermore, the die is economical in use, as it will require little or
no repair; it can be easily set or adjusted; and one die will serve for many
different sizes of clods or bricks.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. For moulding or shaping clay or other plastic substances, a die constructed of
a number of sections or parts, some, or all, of which are adjustably mounted on the
flange or outer face of a conical mouth-piece so as to overlap each other as seen in
end view or cross section, the arrangement being such that by suitably adjusting
the said sections or parts, or some of them, relatively to one another, the cross-
sectional area and shape of the die passage formed by and between them can be
readily altered, substantially as hereinbefore described.
2. My improved die or month-piece constructed substantially as described and
shown.
51
100%
DAVID LEWIS.
W. Lloyd Wise,
Chartered Patent Agent,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicant.