Means for the Recovery of Rubber from Waterproof Cloth or Cuttings thereof.
Year: 1899

page_text: Date of Application, 18th Aug., 1899
Complete Specification Left, 18th May, 1900-Accepted, 18th Aug., 1900
Means for the Recovery of Rubber from Waterproof Cloth or Cuttings
thereof.
We, RICHARD RUSSELL GUBBINS, of 95 Pelton Road, East Greenwich, Kent,
and HERMANN LOOG, of 27 Acre Lane, Brixton, County of London, Engineers,
do hereby declare the nature of this invention to be as follows:-
This invention relates to means for the recovery of rubber from waterproof
cloth or cuttings thereof.
For the purpose of this invention, we saturate waste or cuttings or trimmings
of waterproof fabric factories, or the waste of waterproofing workshops, or of
old waterproof garments, or waterproof rags in a bath of naphtha or other liquid
solvent of rubber, and its solutions or gums when well soaked and the gum ex-
panded and softened we pass it in fairly even layers between one or more pairs
of plain faced nip rollers, such as from an inclined feeding plate, or from a
feeding apron, the pressure being regulated and determined by the
nature of the material under treatment to squeeze the softened
rubber and the solution or gum off or from the fabric. The rubber recovered
or extracted from the cloth is next washed in fresh solution either alone or in
conjunction with the fabric, or the fabric alone is washed in a weak solvent and
hot water to deprive the fabric of any particles of rubber still adhering, and
finally in hot water to deprive the fabric of what may remain.
The fabric, particularly that of a woollen base, is next placed in a still and by
heat and precipitation, the naphtha or solvent can be recovered for re-use, or as
found necessary.
The recovered rubber can be similarly treated for the removal
of the solvent held in it, the naphtha being drawn off or decanted as desired.
In some cases such as when the fabrics are of double texture with rubber
between them, the first saturation by the solvent will permit of the two cloths
being pulled asunder and then the rubber in a pasty condition can be more
readily removed, and if desired a flannel covered roller saturated with a solvent
could be put into contact with the rubber just before the roller squeezing for
assisting or expediting the removal operation.
I 1000
H. GARDNER,
Patent Agent, 166 Fleet Street, London.
Agent for the said
Richard Russell Gubbins and
Hermann Loog.

page_text: COMPLETE SPECIFICATION.
Means for the Recovery of Rubber from Waterproof Cloth or Cuttings
thereof.
We, RICHARD RUSSELL GUBBINS, of 95 Pelton Road, East Greenwich, Kent,
and HERMANN Loog, of 27 Acre Lane, Brixton, County of London, Engineers,
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 means for the recovery of rubber from waterproof
cloth or cuttings thereof.
For the purpose of this invention, we saturate waste or cuttings or trimmings
of waterproof fabric factories, or the waste of waterproofing workshops, or of
old waterproof garments, or waterproof rags in a bath of naphtha or other liquid
solvent of rubber, when well soaked and the vulcanized rubber expanded and
softened we pass it in fairly even layers between one or more pairs of plain faced
nip rollers, either from an inclined feeding plate, or from a feeding apron, the
pressure being regulated and determined by the nature of the material under
treatment to squeeze the expanded and softened vulcanized rubber off or from the
fabric.
The vulcanized rubber recovered or separated from the cloth is washed in a
fresh bath of naphtha or its equivalent either alone or in conjunction with the
fabric, or the fabric alone is washed in a weaker or cheaper solvent than the
naphtha, such as benzoline to deprive the fabric of any particles of rubber still
adhering to it.
The fabric is next placed in a still, and by heat and distillation the naphtha
or solvent is driven off for re-use.
The recovered rubber is similarly treated for the removal of the solvent held
in it, the naphtha being driven off as above described.
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 :-
The means for the recovery of rubber from waterproof cloth or cuttings thereof
consisting in saturating and soaking the waterproof fabric in a bath of naphtha
or liquid solvent of rubber, pressing or squeezing such soaked material to re-
move the rubber from the fabric, washing the extracted rubber, either alone or in
conjunction with the fabric, or the fabric alone, in a bath of naphtha, or its
equivalent, placing the recovered rubber or the fabric in a still where by heat
and distillation the naptha or solvent is recovered for re-use, substantially as
described.
R. CORE GARDNER,
Patent Agent, 166 Fleet Street, London.
Agent for the said
Richard Russell Gubbins and
Hermann Loog.
The 18th day of May 1900.
R. CORE GARDNER,
Patent Agent, 166 Fleet Street, London.
Agent for the said
Richard Russell Gubbins and
Hermann Loog.