Year: 1887

page_text: Date of Application, 19th Nov., 1887
Complete Specification Left, 10th July, 1888
Complete Specification Accepted, 31st Aug., 1888
rectionery and other
I, WILHELM GRASSHOFF, of Wriezen %, in the empire of Germany, Purveyor to
the Royal Court, do hereby declare the nature of this invention to be as follows:-
My invention relates to moulds for the manufacture of objects from plastic
substances."
The moulds hitherto used for forming objects out of soap, wax, clay, porcelain or
other resinous and plastic substances have the inconvenience that the surplus of the
substance after the mould has been opened has to be cut off; and generally the
substance adheres to the two parts of the mould thereby making the cleaning difficult.
Furthermore the moulds used by confectioners and for the manufacture of marzipans
are not easily constructed, especially as the objects to be made have to be formed in
two or more parts and to be joined together. To remedy these inconveniences I
construct a mould having a case of cast metal or of sheet iron according to the out-
line of the object to be formed and a separate moulding portion, the latter of which is
made with a pattern. This moulding portion fits into the case and can be removed
therefrom after the hardening of the cast. In moulding the substance the outlines
are formed by the edges of the case, the recesses and projections however are formed
by the moulding portion.
For moulding one-sided figures one half of the mould may be sufficient, the surplus
material being simply struck off the edges of the case. For moulding full figures
the two parts of the mould are put one upon the other filled with the substance to be
moulded. The surplus is cut off directly by the corresponding sharp edges of the two
parts of the case.
If hollow figures or objects have to be moulded the two parts of the mould are
coated with the required thickness of the substance, the connection of which is imme-
diately obtained by pressing the two parts together. The two parts of the mould are
of the required height.
In nedôn to five this nose it can be provided with a flange.

page_text: For filling up the mould the case is put upon one half of the pattern lying on a
suitable plate. The outlines of this patterns should correspond exactly with the inner
contour of the case. If now a suitable substance as, for example, sulphur, plaster,
cement, metal or other similar substances is poured into the case over the pattern a
cast corresponding exactly to the pattern is formed which when set can be taken off
with the case from the pattern and fixed by means of the flanges. The other half of
the mould is constructed in a similar manner by means of the other part of the case.
To secure the adhesion of the cast with the case it is advantageous to previously warm
the case before pouring in the liquid substance and to provide it with a layer of varnish
or other adhesive substance. The liquid substance then comes into intimate contact
with the melted varnish or the like whereby the detachment of the substance especially
at places where it is thin is prevented. In employing substances which are not placed
in the case in a melted condition but in the form of a paste the warming of the case
is superfluous.
To produce good results the two frames are advantageously connected by means of
a hinge in such a manner that after filling abundantly one half of the moulds with
the required substance, the other half has only to be folded over it so as to effect in
one action the moulding of a figure and the cutting off of the superfluous substances
by the corresponding edges.
One half of the mould may be fixed on a base plate and the other half held in
guides fixed to the base plate so as to be lowered and raised.
If the figures or objects to be moulded possess complicated outlines the sheet-iron
cases are constructed with difficulty, in this case it is advantageous to employ cast-iron
cases, which besides, have the further advantage that the moulding portion is held
better than in the sheet iron case. The cast-iron cases are preferably enlarged at the
lower part, so as to secure the moulding portion in the case. This cast iron case is
advantageously rivetted, soldered or screwed on a base plate of sheet-iron or other
suitable material. The cast iron cases can be connected by hinges or by other means
or arranged in a press.
If designs of little complication are to be moulded, sheet-iron cases enlarged at
their bases can be constructed and the mould portion itself may be stamped out of
sheet-iron integral with the sheet-iron case or connected with it by rivetting or
soldering. In the latter case the filling up of the hollow space is not required.
For special purposes and especially for moulding objects of warm or hot substances,
as for example, in the chocolate manufacture, the moulding portion can be provided
with a metal covering or be replaced directly by a moulding portion of cast iron. In
the first case the metal covering must be of uniform thickness which for instance can
be obtained by electro-deposition.
The described moulds enable the manufacture of a large number of half-moulds
with only one pattern and have besides the advantage that the corresponding edges
of the case remove the surplus of the plastic substance which owing to the sharp
condition of the edges cannot adhere to the moulds.
Moulds of this construction have further the advantage that one-sided objects can
be pressed out more or less, as the surplus of the substance has not, as in the ordinary
moulds, to be cut off with a knife but is effected by the sharp edges. They have
further the advantage that they can be operated quickly so that the objects can be
taken out of the moulds in their plastic condition, so as to allow of modifications.
The described moulds will consequently find suitable employment in the
confectionery, cookery, in the manufacture of marzipan, tragacanth, biscuit, and soap
and wax as well as in the ceramic art and everywhere where a mould for a plastic
substance is required.
D
1
1011
1
G. F. REDFERN & Co.,
4, South Street, Finsbury, London,
Agents for the Applicant.

page_text: Improvements relating to Moulds for the Manufacture of Con-
fectionery and other Articles from Plastic Substances.
I, WILHELM GRASSHOFF, of Wriezen in the German Empire, Confectioner 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 :--
The moulds forming the object of the present invention, for the manufacture of
confectionery and other articles from plastic substances such as sweetmeats, soap, wax,
clay and the like, consist of two parts a a¹ the sharp edges b b¹ of which are pressed
together thus cutting away the superfluous material.
To manufacture these moulds the casings a a¹ are cast or formed of metal strips or
pressed in the outline of the article to be formed from the plastic substance. These
casings are of conical or tapered section coming to a sharp edge at the line of contact
with each other, and are fastened to the base platesc c¹ in an inclined position so that
the base d d has a greater circumference than the edges 6 61. The casings are then
filled in with sulphur or other suitable substance in which the form and shape of the
article to be manufactured is pressed in by means of a pattern.
The base of the casing being wider than the top the substance e e¹ filled in will also
have a broader base and will thus remain fastened in the casing.
The base platesc c¹ can either be hinged together as represented in Figs. 1 and
or otherwise joined and pressed together for instance by a suitable stand and hand-
wheel as represented in Fig. 5.
For the manufacture of articles in high relief only one of the two halves is necessary
as represented in Figs. 3 and 4.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, 1 declare that what
I claim is :-
A mould for the manufacture of confectionery and other articles from plastic
substances consisting of a casing such as a of conical or tapered section and repre-
senting the outline of the article to be manufactured and projecting from its base
plate c in an inclined position so that its base has a greater internal circumference
than its edge 6 in combination with a suitable substance filled in the casing and
formed with the shape of the article to be manufactured for the purpose of cutting
away the superfluous plastic substance by means of the sharp edge of the
casings a.
Dated this 10th day of July 1888