A New and Improved Mould for Moulding Leather, Paper, and such like Pulp.
Year: 1891

page_text: Date of Application, 4th July, 1891
Complete Specification Left, 4th May, 1892-Accepted, 2nd July, 1892
PROVISIONAL SPECIFICATION.
A New and Improved Mould for Moulding Leather, Paper, and such
like Pulp.
GEORGE MAHAFFY 16 Maidenhead Court London E.C. Commission Agent,
WILLIAM RABLEY 16 Maidenhead Court London E.C. Boot Maker, JAMES
WESTAWAY 16 Maidenhead Court London E.C. Commercial Traveller, do hereby
declare the nature of this invention to be as follows:-
This invention in providing a mould of a porous material so that the moisture
and air contained in the pulp operated upon may penetrate the mould and thus be
eliminated from the material operated upon and the same is carried out in the
following manner :—
We construct our mould of wood of a suitable texture, so that the resisting
surface of the mould presents the end grain of the wood to the material.
The part of the plunger or piston which comes into contact with the material is
also of this construction. We find that in the case of moulding heels or soles for
boots from leather pulp, that a block of wood in which the mould is cut so that the
end grain is exposed, the bottom being formed of a plug of wood also exposing the
end grain, is most convenient, the piston or plunger carries an end grain head, or
it may be entirely of that material. It will be seen that any of the well known
porous bodies such as compressed charcoal, coke or such like material may be
employed for the purpose of carrying out this invention.
Dated this Third day of July 1891.
GEORGE MAHAFFY,
WILLIAM RABLEY,
JAMES WESTAWAY,
Applicants.
COMPLETE SPECIFICATION.
A New and Improved Mould for Moulding Leather, Paper, and such
like Pulp.
We GEORGE MAHAFFY, Commercial Traveller, WILLIAM RABLEY, Tanner,
and JAMES WESTAWAY, Commercial Traveller, all of 16 Maidenhead Court,
Aldersgate Street, in the City and County of London, 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 relates to a mould for use with leather, paper and such like pulp,
so constructed as to allow the moisture and air contained in the pulp operated upon
to penetrate the mould and thus pass off from the material under treatment, as and
when the pressure necessary for moulding or forming the same is applied thereto.
To this end the moulds are lined faced or covered with or made from wood of
suitable strength so placed that the grain of the wood runs towards the interior of
the mould. When pressure is applied to the plunger or male part of the mould the
moisture and air expressed from the pulpy mass enters the grain or pores of the
wood and passes therethrough into channels grooves or recesses in the back of
the mould, or of the mould lining as the case may be, from whence it is carried
away by suitable conduits.
By this construction of mould we are enabled while affording ample provision for
: Pains 871

page_text: the passage of the expressed air and moisture, to dispense with the formation of
channels on the faces and sides of the mould.
Wood with the end of the grain presented to the surface of pressure is not so
liable to deformation as is the case when the surface of pressure is at right angles
to the direction of the grain or pores of the wood. Furthermore, should some
slight deformation of the wood, the end grain of which is presented to the surface
of pressure, result from the extreme pressure which pulp and pulpy masses require
for their consolidation, such deformation would distend the wood laterally and thus
open up the grain pores or fibres of the wood and offer a wider passage for the air
and moisture expressed from the pulpy mass. Such lateral distension would how-
ever be limited by the metal casing in which the moulds or the mould linings are
enveloped or to which they are attached.
To ensure that all the faces of the moulds present the grain of the wood end on
to the material under pressure, it will be necessary to make the moulds in sections
the number of which will depend on the shape or configuration which it is required
to give the finished articles. For example, to produce an article in the shape of a
triangular prism, the mould would require to be made of five sections or parts.
One part for each of the three sides, the fourth for the bottom or base of the mould
and the fifth for the bottom of the plunger or die or male part of the mould. Each
part would require to be so cut and placed that its grain would run in the direction
towards the interior of the mould.
The accompanying drawings shew illustrations of the manner in which our inven-
tion may be carried into practical effect.
Figure 1 is a sectional plan of a mould made according to this invention for the
heels of men's boots, and Figure 2 is a vertical section on the line EF of Figure 1.
It will be observed that this mould is made of six parts, namely:-the four sides
marked A, B, C & D on the drawings, the base G and the plunger bottom H, and
that cach part is so cut and placed in the metal outer casing J as to present the
end of its grain towards the interior K of the mould. L L are filling pieces and
M M are conduits for carrying off the expressed air and moisture. Figures 3 to 5
shew a mould also made in six parts suitable for moulding the heels of women's
boots. From the peculiar curved formation of the heels of women's boots it is
found advisable to fill in the pulpy mass from front to rear of the heel, that is, in
the direction of the arrows shewn in Figures 3 and 5 and the mould requires to be
built accordingly. Figure 3 shews a vertical section of the mould, Figure 4 is a
plan section and Figure 5 is an elevation. In this case the base of the mould N
shapes the back of the heel, the two sides O and P of the mould shape the sides of
the heel, the other two sides R and S of the mould shape the top and bottom of the
heel, and the front of the heel is shaped by the piece T which is attached to or
forms the bottom of the plunger.
We wish it to be distinctly understood that the forms shewn in the drawings, are
illustrations merely and that we do not confine ourselves to the particular manner
of building up the moulds as therein shewn. Nor do we confine ourselves to. the
formation of boot heel moulds only, as our invention is adaptable to any shape of
mould for use with pulp and pulpy inasses.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is :-
1. For moulding or compressing pulp a mould made of or lined or faced with
wood so cut and placed that its grain is presented towards the interior of the mould
substantially as and for the purpose described.
2. For moulding or compressing pulp a mould made in sections from wood so cut
and placed that the direction of the grain fibres or pores of the wood is towards
the interior of the mould, the grain or pores thus offering channels or. ducts through
which the expressed, air and moisture can pass to conduits outside the mould, the

page_text: said sections of the mould being enclosed in a metal or other casing or attached to
a metal or other frame capable of withstanding the pressure necessary for con-
solidating the pulp substantially as described.
Dated this 4th day of May 1892.
F. W. GOLBY,
[36, Chancery Lane, London, W.C., Patent Agent for the Applicants.