An Improved Pneumatic Tyre and Method for Producing the same.”
Year: 1897

page_text: [Communicated from abroad by the firm of CARL PIEPER, of No. 3 Hindersin Strasse,
Berlin, in the Empire of Germany.]
"An Improved Pneumatic Tyre and Method for Producing the same.”
"
I, HENRY HARRIS LAKE, of the firm of Haseltine, Lake & Co., Patent Agents,
45 Southampton Buildings, in the County of Middlesex, do hereby declare the nature
of this invention to be as follows:-
This invention relates to a pneumatic tyre for the wheels of vehicles; the said tyre
being of indiarubber and having an endless, flattened and closed tubular band of
fabric inserted within it, the whole being formed upon a suitably shaped drum.
Apart from this method of construction a further distinctive feature of this
pneumatic tyre consists in its being provided with a roughened tread for preventing
slip while travelling, and with incisions or slits arranged at opposite points on the
smooth inner surface which embraces the rim of the wheel, which incisions or slits
serve for conveniently introducing or withdrawing the inner air tube. The latter must
of course be constructed in the form of a straight tubular band, closed at its ends and
provided with an air-valve. It is further necessary to provide in addition a circular
opening in one of the incisions or slits of the tyre, through which the valve of the
air tube can protrude.
Upon the cylindrically or otherwise suitably shaped drum, first the inner half of
the pneumatic tyre is formed by winding a strip of india rubber thereon and sub-
sequently encircling the said strip with a tube of fabric such as canvas or the like, in
which operation the inner circumference of the said tubular insertion closely joins
the outer surface of the indiarubber strip. The upper or outer indiarubber strip is
then put on and its edges are connected with the edges of the lower or inner india-
rubber strip, in which operation likewise a close connection of the said outer strip
with the circumference of the inserted fabric-tube is made.
During the process of vulcanisation of the endless flattened pneumatic tyre thus
produced, its exterior surface or tread is wrapped, or covered with, a fabric of coarse
texture, so as to obtain a surface corresponding in roughness to the fabric used. Two
slits or incisions are then made in the inner circumference of the pneumatic tyre in
such a manner that these slits or incisions lie opposite one another, one of them being
provided with a circular opening, which allows the inflation valve fixed to the air tube
to protrude. After the air tube has been introduced into the tyre, the slits or in-.
cisions are closed by lacing or tying with cord or the like. The tyre can be secured
upon the rim of the wheel by inflating the air tube.

page_text: "An Improved Pneumatic Tyre and Method for Producing the same.”
I, HENRY HARRIS LAKE, of the firm of Haseltine, Lake & Co., Patent Agents,
45 Southampton Buildings, in the County of Middlesex, 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 a pneumatic tyre for wheels of vehicles, which tyre is
made of india-rubber and inserted fabric arranged as an endless flattened and closed
tubular band and formed upon a shaped or smooth drum.
The said tyre apart from its flattened shape, presents the further characteristic
feature, that its tread is provided with a roughened face preventing the wheel from
slipping when propelled, and further the said tyre has incisions arranged at two
opposite points of its smooth inner surface bearing against the rim, which incisions
serve as a medium for ensuring a more easy insertion and withdrawal of the air
tube.
For this purpose, the latter must, of course, be made in the form of a straight
tubular band with closed ends, one of which carries the air-valve, it being moreover
necessary, that one of the before mentioned incisions be in addition provided with a
circular opening, through which the valve of the air tube can be passed.
This improved pneumatic tyre and the method of manufacturing the same are
practically exemplified in the accompanying drawing, in which
Figures 1, 2 and 3 are views illustrating the method of producing the improved
tyre.
Figure 4 shews the method of inserting the air tube in the tyre.
Figures 5 and 6 are sections of the tyre shown in Figure 4 looking in opposite
directions and illustrating the incisions for the insertion of the air tube.
Figure 7 is a view of the air tube.
Figures 8 and 9 further illustrate the method of inserting the air tube partly shewn
in Figure 4, and
Figure 10 shews the two ends of the air tube connected together.
Upon a smooth or, as represented in the drawing, a shaped drum a, first the interior
half of the flat tyre is produced by placing an india-rubber strip or band b¹ thereon,
and subsequently the tubular insertion c of cloth, canvas or the like indicated in
dotted lines, is placed upon said strip or band. By this operation the inside of the
inserted cloth or the like is connected with the india-rubber band 61. The upper or
outer india-rubber band 62 is then fitted on in the manner illustrated in Figure 2,
its edges being connected with those of the india-rubber band 61, whereby also the
band 62 is connected with the inserted tube.
During the operation of vulcanizing the endless and flat pneumatic tubular hose
thus produced, its outer or running surface b² is wound with coarse woven fabric, in
order to obtain the roughened tread as represented in Figure 3, according to the quality
of the fabric used. Two incisions d d' (Figures 4 to 6) are then cut into the pneu-
matic band in such a manner as to lie opposite each other and one incision d is, in
addition, provided with a circular opening d² as shewn more clearly in Figure 5, the
said opening serving to receive the valve f fixed to the air tube e.
This air tube, as represented in Figure 7, is produced in the form of a straight tube,
closed at its two ends, and is connected with the air valve f in the known manner.
As will be seen from Figure 4, the air tube e is first with its extremity inserted into
the opening d of the pneumatic band and this extremity is then slid along until it
reaches the opposite opening d¹. The said air-tube is then drawn through the
opening to such an extent as shown in Figure 8, that its other extremity provided

page_text: with the valve f arrives in the opening or incision d of the pneumatic band. The
extremity of the tube e is then again inserted into the incision d¹ (see Figure 9) and
slid along until it reaches the incision d and finally the flaps or flanges respectively
arranged on the two tube extremities are placed one on the top of the other, as shewn in
Figure 10.
After the incisions d d have been closed by lacing or sewing, in the
manner represented in Figures 5 and 6, the pneumatic tyre is ready for use and can
be fastened upon the rim of the wheel by inflating the air tube.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, as communicated to
me by my foreign correspondents, I declare that what I claim is :-
1. A pneumatic tyre for wheels of vehicles, consisting of an endless, flattened and
closed tubular band having its tread provided with a roughened face, preventing the
wheel from slipping when being propelled; the said tyre being further provided with
two opposite incisions so arranged on the inside of the tyre as to allow of a straight
air tube, closed at both ends, being easily inserted into and withdrawn from said
incisions, substantially as described with reference to the drawings.
2. A method of producing a pneumatic tyre, of the kind referred to in the first
claim, in such a manner that upon a smooth or shaped drum first the interior smooth
half of the tyre is formed and subsequently-after a tube, serving as an insertion of
fabric, has been placed thereon-the exterior half of the tyre is formed and so
connected with the interior half that a flat, endless tubular band is produced, whilst
in the vulcanizing operation a cloth of coarse woven fabric wound around the tread
surface serves to produce the rough top face; and that finally at the opposite points
of the inside of the pneumatic tyre the incisions serving for the insertion and
withdrawal of an air tube are arranged substantially as described.
Dated this 19th day of October 1897.
HASELTINE LAKE & Co.
45 Southampton Buildings, London, W.C. Agents for the Applicant.