Improvements in Rims for Detachable Pneumatic Tyres.
Year: 1898

page_text: Date of Application, 17th Nov., 1898
Complete Specification Left, 17th Aug., 1899-Accepted, 14th Oct., 1899
PROVISIONAL SPECIFICATION.
Improvements in Rims for Detachable Pneumatic Tyres.
We, HERMANN LooG, of 36, 37, 38, 39 and 40, Newgate Street, Manager to
Messrs. Faudel Phillips and Sons, and RICHARD RUSSELL GUBBINS, of 95, Pelton
Road, East Greenwich, London, S.E., Engineer, do hereby declare the nature of
this invention to be as follows:-
;
Our invention relates to improvements in rims for detachable pneumatic tyres
& has for its object means for gaining access to the inner tube for examination
and repairs. We carry out our invention by making à rim of two or in some
cases of three, outwardly flanged rings, held together by an encircling inwardly
flanged compressing hand. These inward and outward #langes engaging and the
compressing band being tightened by the pressure on it of the compressed air
in the tyre, render the whole practically solid. The outer cover is fastened by
its edges to the rings in grooves provided for them in the same. One of the
rings, where two are used or the middle one when there are three, is wide enough
to receive the spokes of the wheel the other may be narrower. The compression
band may be slotted where the valve passes through it, and may be secured by a
nut either on the valve itself or elsewhere. After inflation tightening this nut
fastens the band independently of the air pressure in the tyre and there is no
danger of the tyre coming off if it gets punctured.
On slacking the band the flanges readily disengage and the rings forming the
rim can be spread apart leaving the air tube perfectly free.
Dated this 16th day of November 1808
HERMANN LOOG,
R. R. GUBBINS,
Improvements in Rims for Detachable Pneumatic Tyres.
We, HERMANN Loo, of 36, Newgate Street, London, Machine Manager, and
RICHARD RUSSELL GUBBINS, of 95, Pelton Road, East Greenwich, London,
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:-
―
Our invention relates to improvements connected with rims of wheels for
pneumatic tyres constructed in parts and held together when in use by a flanged
band in such a way that the said rim may be opened for gaining access to the
air chamber or tube without disturbing the outer cover from its fastening to the
1P 77

page_text: rim and without in any degree depending on the air pressure in the tyre as an
aid to security.
The means employed will be readily understood by reference to the accompany-
ing drawings.
Figure 1 is a longitudinal section of part of a tyre mounted on our improved
divided rim.
Figure 2 is a transverse section of a similar tyre showing the divided rim
closed.
Figure 3 is the same open, giving access to the air chamber or tube.
Figure 4 is a view on a reduced scale of the compressing band used for holding
the parts of the divided rim together.
Figure 5 is a side view of Figure 4.
Figure 6 is a section of the rim and band close to the air valve, Figure 1.
Figure 7 represents in section a slight modification in the shape of the rim.
Similar letters refer to similar parts throughout the drawings.
The rim B is placed between two rings D and C which latter have tubular
edges for receiving the beaded edges of the outer cover A. One of them, D,
may be made in one with the rim B as shown in Figures 1, 2, and 3.
A flanged band E, the ends of which overlap, encircles the whole as shown af
Figure 2.
The valve G passes through a hole and slot in the said overlapping ends E¹
allowing the band to expand and contract freely. The valve stem is furnished
with a nut H:
It is obvious that the greater the pressure on the tyre the tighter this band
will grip the parts D, B, and C, of the rim together, and when the pressure is
removed it will easily yield and allow the ring C to separate from B leaving a
wide space between as shown in Figure 3, through which the air tube may be
handled.
1
In order to make the band E release the ring C more readily, its flanges are
removed where its ends overlap on opposite sides of the valve hole. The flanges
are tapered gently from this point until they obtain their full width as shown
in Figures 1 and 4.
•
A clip F of similar section to the band E is mounted on the valve stem G and
this holds the rings firmly together while the tyre is inflated. The nut H is
tightened and prevents subsequent movement of the parts in case of deflation
through puncture or otherwise.
To open the rim, it is only necessary to loosen the nut enough to let the valve G
with its clip F be forced up high enough to clear the band E when the ring C
will separate easily from B as shown in Figure 3.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed we declare that what
we claim is ;-
1. The improvements connected with rims of wheels for securing pneumatic
tyres in place thereon, as set forth.
2. In appliances for securing pneumatic tyres to rims of wheels, the combina-
tion of wheel rim B, rings C, D, overlapping band E, cover A, valve G having
tightening nut H and clip F, all arranged and acting substantially in the manner
set forth.
3. Providing the rim of a wheel with a tubular edged extension or ring D for
attachment of one edge of a tyre cover, the other edge of the cover being
attached to a loose ring C; an overlapping channelled band E encircling the
rin B and rings D, C, for affixing the rings C to the rim by inflation of a tube
contained within the tyre cover A and afterwards securely held thereto 'by the
tightening of the screw nut H on air valve G, as set forth.
4. In appliances for securing tyre covers to wheels as set forth in Claim 3, pro-
viding the band E with flanges for the greater part of its circumference and

page_text: gradually tapering the flange down to that part of the band where the overlap-
ping takes place to enable the ring C to be more readily released, as described
and shown.
The 17th day of Anos 1900
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said Hermann Loog and Richard Russell Gubbins.