Improvements in pneumatic tyres for vehicles and velocipeds
Year: 1896

page_text: I, JAMES HAROLD BARRY of 145 Sandringham Road Dalston in the County of
Middlesex, Engineer, do hereby declare the nature of this invention to be as
follows:-
Improvements in pneumatic tyres for vehicles and velocipeds, and are constructed
as follows,
I enclose a single or other tube within a hollow felloe and superposed on this a
mushroomed headed wearing piece, which wearing piece is sometimes kept within the
hollow felloes or rim by a cover overall, with its edges secured to the sides of the
hollow felloes or rim, on its outer periphery by which means mud and water is excluded
from the tyre, and I preferably make the pneumatic part of this tyre to fit the rim or
felloe touching the sides of such rim within, when under pressure of air, by this means,
the sides of the tyre or air chamber are not chafed through; but I sometimes use a
loose air bag or air tube to fill the entire hollow of the rim or felloe; when I use
this description of air chamber I make the inner portion of the mushroom headed
wearing piece tapered in the centre to act as a wedge or plunger on the centre of
such chamber, instead of the friction being on the sides, as in former patents granted
to me I found the air bag or tube chafed through against the inner sides of the rim
in a few weeks.
I also make the tyre with a double headed plunger or wearing piece, but not of a
mushroom or hooded type the inner part and the outer being the same or nearly the
same shape these pieces are joined at the centre by a flange or extending flap on each
side which is secured to the outer edges of the rim or felloe, supporting the wearing
piece which is by this means made reversable, and in covering the mouth of the rin
acts as a cover to exclude moisture.
Dated this 3rd October 1806
I, JAMES HAROLD BARRY, of 145, Sandringham Road, Dalston, in the County
of Middlesex, Engineer, 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 :-
Improvements in pneumatic tyres for vehicles and velocipedes which are constructed
as follows:-
I enclose a single or other tube within a hollow felloe, and superpose on this a
mushroom beaded wearing piece which wearing piece is kept within the hollow felloe
or rim by a cover overall with its edges secured to the sides of the hollow felloe or
rim on its.outer periphery by which means mud and water is excluded from the tyre:
and I preferably make the pneumatic part of this tyre to fit the rim or felloes, touching
Price 8d1

page_text: the sides of such rim within when under pressure of air, by this means the sides of the
tyres or air chambers are not cut through.
I sometimes use a loose bag on the air tube to fill the entire hollow of the rim or
felloe. When I use this description of air chamber I make the inner portion of the
mushroom headed wearing piece tapered in the centre to act as a wedge or plunger on
the centre of such air chamber; instead of the friction being on the sides; as in
former patents granted to me I found the air bag or tube chafed through against the
inner sides of the rim in a few weeks. I also make these tyres with a double headed
plunger or wearing piece, but not of a mushroom headed type, the inner part and the
outer being the same or nearly the same shape, and joined at the centre by a flange.
or by extending flap on each side which is secured to the outer edges of the rim
or felloe, thus supporting the wearing piece, and is by this means made reversible,
and in covering the mouth of rim, acts as a cover to exclude moisture.
Referring to the accompanying illustrative drawings (in which like parts are
similarly lettered) Fig. 1 shows in cross section an arrangement according to my
invention in which A is a hollow felloe or rim, B is an air tube, C a loose bag
of canvas or other suitable material, surrounding and enclosing the air tube, Da
wearing piece of mushroom headed form in cross section with its inner portion of
a form gradually decreasing in width towards its innermost part, the said part
heing adapted to press as shown and have a wedge or plunger like action against
the central portion of the outer circumference of the air tube for the purpose set
forth. E is a cover which surrounds the outer portion of the wearing piece D
and has its edges beaded and secured to the sides of the hollow felloe or rim at
its outer periphery by curved portions Fx of the rings F in order to exclude
mud and water from the tyre, or E and D may be united as in Figs. 2, 4, 5 and 6.
Fig. 2 shows a modification in which the cross sectional form of the fellos or
rim A differs somewhat from that represented in Fig. 1 and the wearing piece D
and cover E are united. F F are hollow rings which serve for securing DE
in place, as well as for protecting the same laterally. Through the inner sides
of each ring F stud holes F are formed (see Figure 3) the wider ends of which
(when the tyre is deflated) can be passed over the heads G of studs which project
laterally from the respective sides of the cover E. When the tyre is inflated the
shanks of the studs are, as a result of the outward pressure exerted against DE,
caused to enter the smaller ends of the holes F, (Figs. 2 and 3). The edges of
the cover are formed with annular shoulders, which, when the tyre is inflated,
bear against the inner portions of the rings F.
The annular shoulders may be omitted or the rings F F may be made solid and the
studs omitted, the annular shoulders being retained.
Fig. 4 shows a modification in which D and E are united as in Figure 2 but
the edges of E are secured to the sides of the hollow felloe or rim between
curved portions A' of the rim and curved portions F of rings F secured to the
felloe or rim.
Figure 5 shows a modification in which D and E are in one but D is made
with a core D₁ of suitable material such as corkine or canvas. The edges
of E are stiffened by pieces of metal or other suitable material inserted within
them.
Figure 6 shows a modification in which again D and E are in one but the
inner portion of the wearing piece D is formed with shoulders which, when the tyre
is inflated, bear against the lips A³ of the felloe or rim. In this example D may be
made (as shown) with a core D' of suitable material such as above referred to. In
this case the canvas cover or bag C (or the single tube if such be employed) may be
(as shewn) of such a size that the air tube cannot be inflated to such an extent as to
All the felloe or rim thereby avoiding any tendency of the sides thereof being burst,
or bent outwards.
Figure 7 shows a modification of the arrangement shown in Fig. 6 the wearing
piece D being made separate from the cover E and formed if desired with a core (as
shewn) of suitable material such as already referred to.

page_text: Figure 8 shows a inodification in which there is a double headed wearing piece not
of mushroom headed type, the inner part D and the outer part D being of similar
shape and attached to and joined by concentric bands which form lateral flaps Ex that
project outward at each side and are secured to the outer edges of the rim or felloe
in suchwise as to hold in place the wearing piece, even should the air tube become
deflated, and which enables the wearing piece to be reversed, and, when in position,
acts as a cover to the annular opening round the felloe or rim so as to exclude mud,
dust and water.
It is to be observed that in all the hereinabove described arrangements the inner
portion of the wearing piece D is so formed as to have a more or less welge-like or
plunger-like action against the central portion of the outer circumference of the air
tube B such as will tend to push or draw away from the lateral walls of the hollow
felloe or rim A instead of forcing in chafing contact therewith the outermost side
portions of the air tube B. By this means liability to chafing of the air tube against
the felloe or rim, such as obtains in most tyres enclosed within hollow rims as heretofore
constructed, is obviated.
Although in each of the several arrangements illustrated I have shewn an air tube
enclosed in a canvas or other hag, it will be evident that a single air tube may be
employed, which may be of india rubber and canvas or of other known kind.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. In a hollow felloe or rim wheel tyre comprising an air tube in the hollow felloe
or rim and an outer cover, a wearing piece which in cross section is mushroom headed
with an inner portion of a form tapering or decreasing in width in cross section
towards its inner circumference and arranged to act as a wedge or plunger upon the
air tube in the manner hereinbefore described for the purpose specified.
2. The improved pneumatic tyres hereinabove respectively described with reference
to and shown in Fig. 1 in Figs. 2 and 3, in Fig. 4, in Fig. 5 in Fig. 6 and in Fig. 7 of
the accompanying drawings.
3. A hollow felloe or riu wheel tyre comprising an air tube in the hollow felloe or
rim a double headed wearing piece whose inner and outer parts are the same or nearly
the same in shape and are joined and secured to the outer edges of the rim or felloe
by flaps substantially as described with reference to the example illustrated in Fig. 8
of the drawings.
4. In a pneumatic tyre of the kind referred to a wearing piece whose inner portion
which bears against the outer circumference of the air tube enclosed in the hollow
felloe or rim is made of a cross section tapering or decreasing in width towards its
inner circumference and is arranged to act after the manner of a wedge or plunger
against the air tube as and for the purpose specified.
Dated this 24th day of February 1897
W. Lloyd Wise,
JAMES H. BARRY.
46 Lincoln's Inn Fields, London, W.C., Agent for the Applicant.