or in Articles Made therefrom.
Year: 1886

page_text: or in Articles Made therefrom.
I BENJAMIN JOSEPH BARNARD MILLS of the firm of Harris and Mills of 23 South-
ampton Buildings in the County of Middlesex Patent Agent do hereby declare the
nature of this invention, a communication to me from abroad by Alfred Fayaud of
Paris in the Republic of France, India Rubber Manufacturer, to be as follows:-
The invention consists in a new process of vulcanization of pure caoutchouc in
sheets whereby the following advantages are obtained as compared with the processes
hitherto known.
1st. Complete vulcanization of all articles made of pure caoutchouc.
2nd. The caoutchouc retains all its strength and its quality remains complete, the
present process excluding all acids capable of injurcing it.
3rd. Rapidity in the operation.
4th. Economy.
To obtain these results I operate in the manner hereinafter described and employ the
apparatus represented by way of example in the accompanying drawing in which
Figure 1 is a vertical section and Figure 2 a plan.
The pure caoutchouc is cut into sheets to the desired thicknesses or it is rolled into
sheets by means of rolls.
1st. In either case I take the sheets of caoutchouc and apply on their surfaces a
coating of powdered sulphur, I cut the article to be vulcanized to the desired form and
I join the parts by the usual means, then I pass it to the stove.
2nd. I arrange a reservoir of metal or other material, provided with small supports c
to carry a moveable cover B. The form of this reservoir is of no importance for the
process, that is to say, any article in the form of a reservoir of any convenient shape
may serve for the present process.
3rd. I place in this reservoir the articles which have been previously immersed in
pure water after their treatment in the stove.

page_text: 4th. I place the moveable cover B which on account of its being of smaller dimen-
sions than the interior of the reservoir, leaves a space E for the passage of the pure
water which the reservoir is to receive. This cover serves to retain in their respective
positions the articles to be vulcanized and has water both above and below the same.
5th. I pour over the cover B the quantity of water necessary to cover the articles
to be vulcanized as also the cover as shown at Figure 1.
6th. And finally. The reservoir A thus prepared is arranged in any suitable steaming
apparatus where it is submitted to a pressure of from 4 to 5 atmospheres and where it
is left for from 30 to 35 minutes according to the thickness of the sheet, employed in
the manufacture of the articles to be vulcanized.

page_text: or in Articles Made therefrom.
I, BENJAMIN JOSEPH BARNARD MILLS of the firm of Harris and Mills of 23 South-
ampton Buildings, in the County of Middlesex, Patent Agent, do hereby declare the
nature of this invention, a communication to me from abroad by Alfred Fayaud of
Paris, in the Republic of France, India Rubber Manufacturer, and in what manner the
same is to be performed to be particularly described and ascertained in and by the
following statement:-
The invention consists in a new process of vulcanization of pure caoutchouc in
sheets whereby the following advantages are obtained as compared with the processes
hitherto known.
1st. Complete vulcanization of all articles made of pure caoutchouc.
2nd. The caoutchouc retains all its strength and its quality remains complete. the
present process excluding all acids capable of injuring it.
3rd. Rapidity in the operation.
4th. Economy.
To obtain these results I operate in the manner hereinafter described and employ
the apparatus represented by way of example in the drawing accompanying my
Provisional Specification in which Figure 1 is a vertical section and Figure 2 a plan.
The pure caoutchouc is cut into sheets to the desired thicknesses or it is rolled into
sheets by means of rolls.
1st. In either case I take the sheets of caoutchouc and apply on their surfaces a
coating of powdered sulphur, I cut the article to be vulcanized to the desired form
and I join the parts by the usual means, then I pass it to the stove.
2nd. I arrange a reservoir of metal, or other material, provided with small supports c
to carry a moveable cover B. The form of this reservoir is of no importance for the
process, that is to say any article in the form of a reservoir of any convenient shape
may serve for the present process.
3rd. I place in this reservoir the articles which have been previously immersed in
pure water after their treatment in the stove.
4th. I place the moveable cover B, which on account of its being of smaller
dimensions than the interior of the reservoir, leaves a space E for the passage of
the pure water which the reservoir is to receive. This cover serves to retain in their
respective positions the articles to be vulcanized and has water both above and below
the same.
5th. I pour over the cover B the quantity of water necessary to cover the articles to
be vulcanized as also the cover as shown at Figure 1.
6th and finally. The reservoir A thus prepared is arranged in any suitable steaming
apparatus where it is submitted to a pressure of from 4 to 5 atmospheres and where it
is left for from 30 to 35 minutes according to the thickness of the sheet employed in
the manufacture of the articles to be vulcanized.

page_text: Having now particularly described and ascertained the nature of the said invention
and in what manner the same is to be performed 1 declare that what I claim is :—
1. A process of vulcanizing pure caoutchouc in sheets, consisting, first of coating
the sheet of caoutchouc with sulphur, second in joining the parts together, third in
placing it in the stove, fourth in passing it into pure water, fifth in placing it in water
in a reservoir or vessel with a moveable bottom, sixth in placing this vessel provided
with the articles to be vulcanized in a steaming apparatus under pressure, all sub-
_stantially as herein described and for the purpose stated.
2. In a process of vulcanizing pure caoutchouc in sheets as described the employ-
ment of an apparatus consisting of the reservoir A with moveable bottom B, leaving a
free space E, in which the articles to be vulcanized are to be immersed, such reservoir
being employed to carry the articles to be vulcanized whilst in a steaming apparatus
under pressure substantially as herein shown and described.