IMPROVE- MENTS IN THE MANUFACTURE OF INDIA-RUBBER BELTS OR DRIVING BANDS
Year: 1880

page_text: LETTERS PATENT to John Albert Reinhold Hildebrandt, of the Firm of
A. Hildebrant, Patent Agent, of 43, Market Street, in the City of Manchester,
in the County of Lancaster, Civil Engineer, for an Invention of "IMPROVE-
MENTS IN THE MANUFACTURE OF INDIA-RUBBER BELTS OR DRIVING BANDS."
A communication from abroad by Franz Clouth, of Nippes, near Cologne, in
Germany.
PROVISIONAL SPECIFICATION left by the said John Albert Reinhold
Hildebrandt at the Office of the Commissioners of Patents on the 17th
January 1880.
JOHN ALBERT REINHOLD HILDEBRANDT, of the Firm of A. Hildebrandt, Patent
Agent, of 43, Market Street, in the City of Manchester, in the County of Lancaster,
Civil Engineer. "IMPROVEMENTS IN THE MANUFACTURE OF INDIA RUBBER BELTS
OR DRIVING BANDS," A communication from abroad by Franz Clouth, of Nippes,
near Cologne, in Germany.
The strips of woven fabric, leather, or other material of which the belt is to be
composed are coated with india rubber and piled one upon another until the desired
number of layers is provided. These layers are then stitched or sewn through by
hand or machine, and the belt thus formed is then coiled up or laid in some
convenient manner and brought into the vulcanizing apparatus, and is now
subjected to the vulcanizing process in the ordinary way. If desired, the coating
of india rubber may be omitted on the exterior surfaces of the belt, and in this
case only the layers of cloth, leather, &c., with the intervening india rubber will be
stitched and vulcanized, and the external surfaces which are not coated with india
rubber may or may not be coated with oil, paint, varnish, talc, or other similar
substances. In place of all or some of the layers of cloth, leather, &c., mill-
board, pasteboard, paper, or similar tissues may be used, and if such materials
preponderate the layers of the belt are not stitched together. Instead of uniting
the layers of the belt by stitching or sewing, as described, screws, pegs, wire, rivets,
and similar means may be employed, or such means may be used in addition to
stitching.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said John Albert Reinhold Hildebrandt in the Great Seal Patent Office
on the 17th July 1880.
JOHN ALBERT REINHOLD HILDEBRANDT, of the Firm of A. Hildebrandt, Patent
Agent, of 43, Market Street, in the City of Manchester, in the County of Lancaster,
Civil Engineer. “IMPROVEMENTS In the Manufacture of India ŘuBBER BELTS
OR DRIVING BANDS." A communication from abroad by Franz Clouth, of Nippes,
near Cologne, in Germany.
The strips of woven fabric, leather, or other material of which the belt is to be
composed are coated with indiarubber and piled one upon another until the desired
number of layers is provided. These layers are then stitched or sewn through by
hand or machine, and the belt thus formed is then coiled up or laid in some
convenient manner and brought into the vulcanizing apparatus, and is now
subjected to the vulcanizing process in the ordinary way.
If desired, the coating of india rubber may be wholly or partly omitted on the
exterior surfaces of the belt, and in this case only the layers of cloth, leather, &c.,
with the intervening india rubber will be stitched and vulcanised, and the external
surfaces, which are not coated with india rubber, may or may not be coated with
oil, paint, varnish, talc, or other similar substances. In place of all or some of the
layers of cloth, millboard, pasteboard, paper, or similar tissues may be used, and if
such materials preponderate the layers of the belt are not stitched together.
Instead of uniting the layers of the belt by stitching or sewing, as described,
screws, pegs, wire, rivets, and similar means may be employed, or such means may
be used in addition to stitching.
Having now particularly described the Invention, & ascertained in what
manner the same is to be performed, I declare that I do not limit myself to exact
details given for the purpose of explaining the Invention, but claim as new
substantially,-
1.) Driving bands composed of layers of calico, linen, paper, leather, or similar
materials, or some one, or more, or all such substances coated entirely or partly
with indiarubber, or alternating with layers of india rubber, & united by stitching,
riveting, screwing, pegging, or other known method, or one or more such methods,
and afterwards vulcanized, substantially as described.
2.) Such bands entirely coated with india rubber externally and afterwards
vulcanized.
3.) Such bands externally coated with india rubber on one side, or such coating
omitted entirely, but surfaces not coated with india rubber coated with oil paint,
and the like, or not so coated, substantially as described.
4.) Driving bands made of layers of paper and layers of india rubber, which may
or may not alternate with layers of calico and the like, riveted, sown, screwed, or
otherwise united, and vulcanized after so uniting them, substantially as described.
In witness whereof, I, the said John Albert Reinhold Hildebrandt, have here-
unto set my hand and seal, this Sixteenth day of July, in the year of
our Lord 1880.