Improvement in or connected with Pneumatic Tyres for the Wheels of Cycles and other Vehicles.
Year: 1892

page_text: Date of Application, 9th Mar., 1892
Complete Specification Left, 26th May, 1892-Accepted, 2nd July, 1892
PROVISIONAL SPECIFICATION.
Improvement in or connected with Pneumatic Tyres for the
Wheels of Cycles and other Vehicles.
GUSTAV RITTERSHAUS Surgical Appliances Maker of 15 Little George
Street London West and ANTON JOSEPH SCHAEFER Civil Engineer of
43 Torrington Square London West City do hereby declare the nature of this
invention to be as follows:
The nature of the invention is a special protector for pneumatic tires. The
protector is a flaxible metalic chain webbing. The metalic chain webb protector
can be fixed and applied to all kind of pneumatic tires any how they are
constructed, what strap they have, and as they are fastened or secured to the rim.
The protector may be placed and fastened either around an pneumatic tire outward
or between a pneumatic ring and a solid rubber ring tube. The protection ring is
saaped as a semi circle tube therefore it covers the pneumatic tire on its outward
surrounding only. The advantages of the metalic protector for pneumatic tires are
to prevent sharp or pointed matters to destroy the pneumatic tire which cycles or
vehicles will meet on the road.
Dated this 9th day of March 1892.
GUSTAV RITTERSHAUS.
ANTON JOSEPH SCHAEFER.
COMPLETE SPECIFICATION.
Improvement in or connected with Pneumatic Tyres for the
Wheels of Cycles and other Vehicles.
We GUSTAV RITTERSHAUS Surgical Appliance Maker of 15 Little George
Street London West and ANTON JOSEPH SCHAEFER Civil Engineer of
43 Torrington Square West City 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 :-
The invention has for its object an improvement upon the ordinary pneumatic
tvres now in use.
In actual practice it has been found that pneumatic tyres are seriously defected
and destroyed by sharp or pointed matters, our invention prevents such defects, etc. its
object being to protect the air tube of such tyres by means of a, flat flexible metalic
webb, or ring chain, of the shape of a semi circle tube which is placed on the
outward surrounding of the air tube. The flexible metalic guard or protector
(which we call in short protector) can be fixed (cemented) and applied to all kind
of pneumatic tyres however the tyres and the rims are constructed, whatever shape
they have, or are fastened or secured to the rim. The protector may be placed and
fastened either around an air tube without further covering or between such tube
and a solid rubber ring. Its advantages are as following, it prevents sharp or
pointed bodies, we may mention, thorns pins, nails, broken glass, porcelain eath-
ware, sharp steels or such like, from penetrating the rubber air tube, and it also
prevents the outside solid rubber from being cut to such extent that it is of no
further use, the absorbing viberation will still be retained by the protector.
Tyres supplied with our invention can be placed either on or into a rim, we
prefer to place it, into a rim, as the absorbing vibration which is retained by the
protector will improve when the rim is of the shape (of a semi circle) like the
protector, by this as well the air tube, when inflated, is prevented from inlarging.
into extreme demensions.

page_text: Generaly pneumatic tyres are constructed of various but always stout materials,
by applying the protector the rubber, both of air tube as well the solid rubber,
need not be of so thick a substance which further intersepts vibration and will
balance the weight of the protector with a less quantity of rubber into its usual
lightness.
The way that we prefer to apply the protector to the wheels of cycles etc. fitted
with pneumatic tyres will allow the cycle to make the narrowest bow or circle
which they can go, either on the road or to overcome a corner, as they are
absolutely free of side sliping, it also is impossible that the first wheel of a cycle
can collapse by going in a bow or around a corner as the edges of the solid rubber,
on right and left sides of the tyre will touch the ground and lift up the cycles and
prevents that it turns entirely over, thereby good balance easily can be kept.
Now we describe the manner which we prefer to apply the protector and how
we construct a rim and to fasten both in combination, on the wheels of cycles and
other vehicles. The rim is of a semi circle shape with two curves on each side all
round it, a cross cut strip of canvas is cemented on the concave surface of the rim,
of course a hole is cut into the canvas to allow the valve tube of the air tube to
pass through, then we place and cement the air tube into the semi circle of the rim.
The protector and the solid rubber are placed and cemented over the air tube and
firmly pressed into the curves, two fastenings, wire catgut etc. bending and tightening
the rubber and protector into the curves.
In the above mentioned manner, wheels fitted with pneumatic tyres will be of a
much reduced weight specially when the rim is made of aluminium.
It may be fully understood that the invention can be applied to solid tyres or
cushions as well, either around or inserted into the inside of the solid rubber,
providing the rim is as mentioned above.
We will describe now our invention reference being made to the accompanying
drawing in which
Fig 1 is a side view of a part of a cycle wheel and shows how it is constructed on
the out and inward side on a small rim, in this figure,
A is the rim, made of any suitable material. B the spokes. C the air tube
made of india rubber. D, & F the two cross cut canvas both surrounding the
protector so that on its edges a double layer of canvas laid (any thin durable
canvas may be used for it) to prevent coming in contact with the air tube and the
solid rubber. E is the protector which may be made of any suitable material, we
prefer thin tempered or hardened steel wire. G is the solid india rubber, we prefer
to choose a fair thickness. H the valve.
Fig. 2 is a transverse section of Fig. 1, with the exception that the solid rubber
covers the rim all over. A is the air tube. B & D canvas. C protector. E solid
rubber. F rim. G spokes. H valve.
Fig. 3 is an exact transverse section of Fig. 1. A is the air tube. B & D canvas.
C protector. E solid rubber. Frim. G spokes. H valve.
Fig. 4 is a transverse section of a tyre fixed to a semi circle rim, without a rubber
covering the protector, it also shows how the protector is fastened to the rim by
means of rings. A is the air tube. B canvas, which is cemented over the air tube.
C protector. D rim. E spokes. F valve.
Fig. 5 is a side view of Fig. 1 & 2 when partly opened on the surface of the
tyre. A is the rim. B solid rubber. C C canvas. D protector.
Fig. 6 is a side view of Fig. 4. A is the rim. B air tube. C protector.
Fig. 7 & 8 show two kind of flat flexible metálic webb or ring chain, made with
the finest meshes, of which Fig. 7 is the flat webb, Fig. 8 the flat ring chain.
Fig. 9 is a transverse section of a tyre fixed on a semi circle rim with two curves
all round the same, it shows in which, why we prefer to construct rims and how we
fasten the protector with the solid rubber to them. The inside circle represents
the air tube. A is the solid rubber; which is a little wider than the protector
(before it is tight on) therefore it will have a small overlapping edge when fastened.
B protector. C rim. D fastening.

page_text: Having now particularly described and explained the nature of our said inven-
tion and the manner in which the same is to be performed we declare that what we
claim is.
No. 1. The improvement on pneumatic tyres to protect them from being deflected
or destroied by means of applying a flat flexible metalic webb or ring chain of the
shape of a semi circle on the outward surrounding over the air tube with or without.
a solid rubber covering.
No. 2. The construction of a flat flexible metalic webb or ring chain protector
in combination with pneumatic and solid rubber tyres and cushions, and it use as
illustrated in the accompanying drawings.
No. 3. The manner of, and fixing the protector with the tyres.
No. 4. The shape of rims mostly suitable for fastening the protector and solid
rubber in combination.
No. 5. The manner of fastening the protector on a small or into a semi circle rim
with or without curves on both side around the rim as described.
Dated this 25th day of May 1892.
GUSTAV RITTERSHAUS.
ANTON JOSEPH SCHAEFER.