Mould for Vulcanizing India-rubber Tyres and Rings.
Year: 1890

page_text: Date of Application, 24th Jan., 1890
Complete Specification Left, 10th Oct., 1890-Accepted, 15th Nov., 1890
PROVISIONAL SPECIFICATION.
Mould for Vulcanizing India-rubber Tyres and Rings.
I ADOLPHUS ISIDOR RATH India Rubber Manufacturer Imperial Works Cooper
Street Hyde Chester do hereby declare the nature of this invention to be as
follows:-
Iron steel or metal mould in rings or sections forming a complete mould & steam
chest in the following manner viz.
A series of grooved rings fitting one upon another with or without top & bottom
plates also grooved as the rings, or otherwise & bolted or clamped together so as to
form a hollow chamber or cavity for the admission of steam to effect vulcanisation of
the material in the said grooves.
The said mould may be formed either with or without top & bottom plate, & be
placed into an ordinary steam pan or chest.
COMPLETE SPECIFICATION.
Mould for Vulcanizing India-rubber Tyres and Rings.
ADOLPHUS ISIDOR RATH, India Rubber Manufacturer of Imperial Rubber Works,
Cooper Street, Hyde in the County of Chester, 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 improvements in moulds for vulcanizing india rubber
tyres and rings the object being to construct the mould in such a manner that it may
not only serve as a mould which may be placed into a steam pan or chamber for the
vulcanization of the material enclosed but constitute in itself a vulcanizing pan.
For this purpose I provide a bottom plate made either dished out or flat in the
centre and provided with an inlet and outlet for steam and with a groove for the
reception of the rubber dough of which the tyre or ring is to be formed and loops
on the sides for bolts.
A series of rings grooved on both sides are made each with a turned shoulder and
downcast lip so as to be capable of fitting interchangeably upon the bottom plate and
successively one upon the other bringing the grooved parts into position to form in
pairs correct matrices to contain the rubber dough to be vulcanized.
A tyre formed of rubber dough in a plastic state is placed in the groove of the
bottom plate and is covered by a ring into the upper groove of which another similar
tyre is placed, additional rings and tyres being built up in the same way to any
requisite number and then covered over by the top plate which like the bottom plate
is provided with a groove for the reception of the rubber dough forming either with
one of the rings or with the bottom plate alone without the intervention of any rings
a complete matrice for one tyre or ring.
The steam inlet and outlet passages being provided in the bottom plate such
openings are not required in the top plate but it has loops to correspond with the
loops in the bottom plate in order that both plates by means of bolts secured in these
loops, may be drawn together and so force the plates and rings into close contact
providing at every joint a steam tight closure by means of the various tyres or rings
of rubber dough thereby also compressed.
Steam being admitted through the inlet pipe in the bottom plate is introduced into
the cavity or steam spaces formed by the closed plates and rings and thus effects the
……lanninating

page_text: The rings form the sides, the tyres or rings of rubber dough, the packing for
retaining the steam and the top and bottom plates complete the vessel which may be
described as a combined mould and steam pan or vulcanizer.
Instead of formning the rings and plates with only one top and bottom groove they
may be formed with two or more top and bottom grooves for vulcanizing at the same
operation two or more tyres or rings of rubber dough diminishing in diameter. Or
separate series of rings enclosing rubber dough to be vulcanized may he built up
and enclosed by the rings and plates which form the combined mould and steam pan
or vulcanizer hereinbefore described.
The accompanying drawings in which the same parts are indicated by like letters
of reference in all the figures will serve to further explain the construction herein-
before described.
Figure 1 is a sectional elevation of the complete apparatus.
Figure 2 is a plan of Figure 1.
Figure 3 is a sectional elevation of the complete apparatus having rings grooved
for receiving three tyres.
Figure 4 is a plan of one of the rings of Figure 3.
Figure 5 is a plan of the underside of Figure 3.
A is the bottom plate provided with bolt loops B and suitable lugs C for securing
the apparatus to the floor if desired. D are the superposed rings and E are the
matrices in which the tyres or rings of rubber dough are placed. F is the top plate
and G are the bolts for closing the various parts of the mould. H is the steam inlet
and J is the steam outlet formed in the bottom plate A.
Having now particularly described and ascertained the
invention and in what manner the same is to be performed,
claim is
I
nature of my said
declare that what
1. A mould for containing tyres or rings of rubber dough to be vulcanized by
enclosing the mould in a steam pan or chamber, consisting of superposed rings inter-
vening between a top and bottom plate, the rings and plates having grooves formed
therein to close together accurately in pairs forming a complete matrice at each joint
substantially as described.
2. In a mould for containing tyres or rings of rubber dough to be vulcanized
therein, the combination of one or more rings grooved on both sides with a top
and bottom plate each having a groove or grooves corresponding respectively with
the upper groove or grooves of the uppermost ring, and the lower groove or grooves
of the lowermost ring, the rubber dough to be vulcanized forming the necessary
packing and a steam inlet and outlet passage for admitting steam to the cavity or
steam spaces to effect the vulcanization of the rubber dough substantially as
described.
3. A combined mould and steam pan or vulcanizer substantially as described and
illustrated by the accompanying drawings.
Dated this 10th day of October 1890.
AYRTON & THOMAS,
Agents for the Applicant.