IMPROVEMENTS IN THE MANUFACTURE OF LIFE PRE- SERVERS, AIR BEDS, CUSHIONS AND COVERLETS, AND IN THE EMPLOYED THEREFOR.
Year: 1872

page_text: LETTERS PATENT to John Macintosh, of Bayswater, and William
Boggett, of Chelsea, both in the County of Middlesex, for the
Invention of "IMPROVEMENTS IN THE MANUFACTURE OF LIFE PRE-
SERVERS, AIR BEDS, CUSHIONS AND COVERLETS, AND IN THE
EMPLOYED THEREFOR.
"
MATERIALS
Sealed the 21st February 1873, and dated the 28th August 1872.
o
PROVISIONAL SPECIFICATION left by the said John Macintosh and
William Boggett at the Office of the Commissioners of Patents,
with their Petition, on the 28th August 1872.
We, JOHN MACINTOSH, of Bayswater, and WILLIAM BOGGETT, of
Chelsea, both in the County of Middlesex, do hereby declare the
nature of the said Invention for "IMPROVEMENTS IN THE MANUFACTURE OF
LIFE PRESERVERS, AIR BEDS, CUSHIONS AND COVERLETS, AND IN THE MATERIALS
EMPLOYED THEREFOB," to be as follows:-
:-
The object of this Invention is to lessen the cost and weight of the
above articles by employing air proof fabrics, consisting of but one
cloth in place of the double cloth heretofore used for making those

page_text: articles. We make the material or fabric we prefer to employ for the
purposes of our Invention by giving a coating of india-rubber to closely
woven thin cloth, adding upon it a second coat of a mixture of one part
india-rubber and six parts of lampblack mixed in naptha, in some cases
putting in about 8 or 10 per cent. of paraffine; or for certain purposes
where a high temperture is not objectionable, equal parts of india-rubber
and paraffine. The fabric thus treated is impervious to air and moisture
and is not affected by atmospheric changes of temperature. We convert
this or other air proof single cloth in accordance with our improvements,
into life preservers by making it into tubes which are inflated and worn
round the neck or other parts of the body. We also use it (generally
converted into tubular lengths) for making air beds, cushions and
coverlets, in the manner described in the Specification of a Patent
granted to us, dated 6th May 1871, No. 1226.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said John Macintosh and William Boggett in the
Great Seal Patent Office on the 28th February 1873.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, JOHN
MACINTOSH, of Bayswater, and WILLIAM BOGGETT, of Chelsea, both in
the County of Middlesex, send greeting.
о
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-eighth day of August, in the
year of our Lord One thousand eight hundred and seventy-two, in the
thirty-sixth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto us, the said John Macintosh and William Boggett,
Her special license that we, the said John Macintosh and William
Boggett, our executors, administrators, and assigns, or such others as we,
the said John Macintosh and William Boggett, our exccutors, adminis-
trators, and assigns, should at any time agree with, and no others, from
time to time and at all times thereafter during the term therein expressed,
should and lawfully might make, use, exercise, and vend, within the
United Kingdom of Great Britain and Ireland, the Channel Islands,
and Isle of Man, an Invention for "IMPROVEMENTS IN THE MANUFACTURE OF
LIFE PRESERVERS, AIR BEDS, CUSHIONS AND COVERLETS, AND IN THE MATERIALS
the said
EMPLOYED THEREFOR," upon the condition. (amongst others) that we,

page_text: John Macintosh and William Boggett, our executors or administrators,
by an instrument in writing under our or their hand and seal, or under
the hand and seal of one of us or them, should particularly describe
and ascertain the nature of the said Invention, and in what manner the
same was to be performed, and cause the same to be filed in the Great
Seal Patent Office within six calendar months next and immediately
after the date of the said Letters Patent.
NOW KNOW YE, that we, the said John Macintosh and William
Boggett, do hereby declare the nature of the said Invention, and in what
manner the same is to be performed, to be particularly described and
ascertained in and by the following statement thereof, that is to say :-
The object of this Invention is to lessen the cost and weight of the
above-named articles, by employing air-proof fabrics consisting of but
one cloth in place of the double cloths heretofore used for making those
articles. According to our improvements we make the material or
fabric we prefer to employ for the purposes of our Invention, by giving
a coating of india-rubber to closely woven thin cloth, adding upon it a
second coat of a mixture of one part india-rubber and six parts of lamp-
black, or thereabout, mixed in naptha, in some cases putting in about 8
or 10 per cent. of paraffine, or for certain purposes where a high tem-
perature is not objectionable, equal parts of india-rubber and paraffine.
The fabric thus treated is impervious to air and moisture and is not
affected by atmospheric changes of temperature. We convert this
or other air-proof single cloth into life preservers, by making it into
tubes which are inflated and worn round the neck or other parts of the
body. We also use it (generally converted into tubular lengths) for
making air beds, cushions and coverlets, by interweaving the said tubes.
in the manner described in the Specification of a Patent granted to
us, dated 6th May 1871, No. 1226. Or, the above articles may be
made by fastening the opposite sides of cushions or beds, by placing
discs of leather or vulcanized sheet india-rubber soaked in melted
paraffine at intervals between the two cloths, through which we punch
holes for the insertion of metal eyelets, which when pressed together,
securely hold the cloth in its place. To prevent the passage of air
through the cloth we saturate it round the apertures with spirit varnish.
We make no claim to the waterproof compound or mixture of lamp-
black and india-rubber previously described, the same having been

page_text: described in the Specification of a Patent granted to John Macintosh,
dated 6th December 1870, No. 3200, for "Improvements in Compounds
for Waterproofing Textile Fabrics and other Surfaces, but what we
claim is,―
"
Firstly. The manufacture of life preservers, air beds, cushions, and
coverlets from a single cloth or fabric coated with waterproof compound
as herein-before described.
Secondly. We claim the methods of making the said articles in the
manner herein-before described.
•
In witness whereof, we, the said John Macintosh and William
Boggett, have hereunto set our hands and seals, this Twenty-
seventh day of February, in the year of our Lord One thousand
eight hundred and seventy-three.
Witness,
(L.S.)
JOHN MACINTOSH.
WILLIAM BOGGETT. (L.S.)
J. G. TONGUE,
Patent Agent,
34, Southampton Buildings,
Chancery Lane,
W.C.