Improvements in and relating to Compressed Air Tyres for Velocipedes and other Vehicles.
Year: 1891

page_text: Date of Application, 23rd Sept., 1891
Complete Specification Left, 30th Oct., 1891-Accepted, 12th Dec., 1891
PROVISIONAL SPECIFICATION.
•
[Communicated from abroad by L. ROCHET & Co., of 74, Rue de la Folie
Regnault, Paris, in the Republic of France, Manufacturers.]
Improvements in and relating to Compressed Air Tyres for
Velocipedes and other Vehicles.
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:-
The present invention relates to compressed air tyres which are chiefly designed
for use in connection with velocipedes.
The said invention is illustrated in the accompanying drawing in which:
Figure 1 shows a section of one form of tyre applied to an ordinary rim of a
velocipede wheel.
Figure 2 shows the same tyre applied to a hollow rim.
Figures 3 and 4 show modifications of the improved tyre.
In the form or modification of the invention shown in Figures 1 and 2 I combine
with a metal rim J of suitable shape a band or strip B of india-rubber or other
elastic material which is formed by moulding or otherwise the sides of which are
feather edged so that after the tyre is placed in position they engage with the side
walls of the rim J and of the tube or air chamber A partly encircled by the said band
or strip B in such a manner that by reason of the expansion imparted by the inflation
of the air chamber A these sides of the covering band B are strongly compressed
against the side walls of the rim and prevent any displacement of the said tyre.
To ensure, during the placing in position of the tyre the exact position of
the covering band B in the rim. two half circular grooves G are provided in the
side walls of the latter so as to be capable of receiving two corresponding ribs b
on the covering band.
In this arrangement the tightening zones of the covering band B are situated as
shewn in the drawing beneath the centre of the india-rubber tube A so that the
maximum of elasticity is obtained without there being any danger of an accidental
separation of the parts in question by lateral strains.
The modified arrangement shown in Figures 3 and 4 comprises the combination
of a metallic rim with an india-rubber band with feathered edges which after the
said band has been put in its place, are inserted between the sides of the rim and
the air chamber in such a manner that the expansion of the latter by inflation
causes the adhesion of the tongues of the covering against the sides of the rim the
borders connected in the moulding with the covering serving only to ensure the
fixing of the latter in its place in the rim.
In the said modifications the borders of the outer covering instead of being
placed as above described in grooves formed upon the edges of the rim, are
arranged at the two edges of the outer covering B and placed either in two
ribs NN having edges parallel with the plane of the rim as in Figure 3 or in a
single rib N' with parallel edges as in Figure 4.
It may here be observed that the ribs NN Figure 3 and N¹ Figure 4 are
specially formed in the rim for giving it rigidity and receiving the tension nuts of
the spokes; I thus dispense with the grooves G (see Figures 1 and 2) and replace
them by the ribs N N and N¹ which thus fulfil a double object-Firstly to render
the rim rigid and secondly to receive the borders 6 of the outer covering so as to
guide the same when being put in place.
It should now be observed that the tongue M see Figures 1 and 2 which is pressed
by the air chamber A against the sides of the rim is somewhat altered in Figures 3

page_text: and 4 in form and position, thus the border is provided at the edge of the covering
as set forth, but the part, M which constitutes the zone of adhesion of this covering
always remains in the same position with this difference that its elongation has
become necessary for enabling the border b held at the edge of the covering to be
placed in the ribs N and N' of the rim in order to ensure the exact position of the
same in the said rim.
Deted thin 92nd day of Santamber 1901
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in and relating to Compressed Air Tyres for
Velocipedes and other Vehicles.
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 compressed air tyres for velocipede and other wheels of
the kind described in the Specification of my former application dated July. 23rd
1891, No. 12539.
The present invention consists in the combination of a metallic rim with an india-
rubber band or envelope provided with enlarged edges which, after the said band has
been put in its place, are inserted between the sides of the rim and the air chamber
in such a manner that the expansion of the latter by inflation causes the adhesion
of the covering against the sides of the rim, the said enlarged edges which are con
nected in the moulding, with the said covering or envelope serving only to ensure
the fixing of the latter in its exact position in the rim.
In the accompanying drawing,
1
Figure 1 is a section of an improved tyre and rim constructed according to the
present invention.
Figure 2 is a modified form of the same.
A represents the air chamber and B the outer covering or envelope: The
enlarged edges b of the outer covering instead of being arranged as described in
the said foriner Specification that is to say in grooves or recesses formed upon the
edges of the rim, are arranged at the edges of the outer covering B and fixed either
in grooves or depressions N N the edges of which are parallel with the face of
the rim as shown in Figure 3 or in a single groove or depression: N' as in
Figure 2.
.
The said grooves or depressions N N Figure 1 and N¹ Figure 2 are formed in
the rim for the purpose of giving it rigidity, and for receiving the tension nuts of
the spokes. I thus dispense with the grooves described in the said former
Specification and replace them by the grooves or depressions. N N and N¹ which
thus fulfil a double object; firstly to render the rim rigid and secondly to receive
the enlarged edges 6 of the outer covering so as to guide the same when being put
in place.
The part M of the covering B which is pressed by the air chamber A. against
the sides of the rim is provided with enlarged edges which are arranged in the
grooves or depressions N and N¹ of the rim in order to ensure the exact position:
of the covering B in the said rim..
Having now particularly described and. ascertained the nature of this inven
tion and in what manner the same is to be performed as communicated.to.merby.
my foreign.correspondents,,I.declare that what I claim:is.:
First. A compressed air tyre B the thin parts-M of which are inserted-between”

page_text: the sides of the rim and the air chamber, without causing any perceptible deforma-
tion of the said chamber, these two pressure zones preventing the displacement of
the tyre B, irrespective of the strains to which it is subjected.
Second. A compressed air tyre B provided on each side with enlarged edges b
which serves to keep the said tyre exactly in its place upon the rim J which is
provided for this purpose with one or more depressions or grooves N designed to
receive the said enlarged edges, the outer edges of the said grooves being parallel
with the face of the rim.
Dated this 30th day of October 1891.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.