Improvements in or relating to Pneumatic and other Tyres.
Year: 1893

page_text: This Print is in accordance with the Original Specification as it sta uls after
Amendment (under Section 18 of the Patents, &c., Act, 1883), as allowed by
the decision of the Comptroller General of the 8th day of January 1897.
Date of Application, 26th July, 1893
Complete Specification Left, 24th Apr., 1894-Accepted. 9th June, 1>94
PROVISIONAL SPECIFICATION.
Improvements in or relating to Pneumatic and other Tyres.
I WALTER SANDELL MAPPIN of 61 Elsham Road London in the County of
Middlesex Mechanical Engineer do hereby declare the nature of this invention to
be as follows :—
This invention relates to protective tyres for various kinds of wheels particularly
to pneumatic and other cycle wheels in order to protect them from being punctured,
and from the excessive wear and tear pneumatic and other rubber tyres are now
subjected to, and the method for fixing the same.
The protective tyre is composed of steel or other metalic substance or of
vulcanite, hard rubber, canvas, canvas and rubber combined or any other suitable
material.
The protective tyres are made in strips about one and a quarter inch wide or
about one fourth the circumference of the wheels to which they are to be attached
and may be in one continuous piece or the ends may overlap each other. The
edges of the protective tyres may be straight or serrated in order to give them
greater clasticity and held firmer in position. The protective tyres are curved to
fit the circumference of the face of the pneumatic or other rubber tyres. In fixing
the protective tyres I attach a piece of rubber and canvas or other suitable material
to each side of the pneumatic or other rubber tyre, each piece being about one inch
wide and cemented to the pneumatic or other rubber tyre to about one half its
width thus forming a continuous, channel on each side of the face of the wheel.
The detached edges of the strips may be turned over with or without a strip of
metal enclosed to give them additional strength. The metal or other protective
tyre may then be inserted in the channels for use and may be detached at pleasure.
For a protective tyre for wheels now in use I make a tubular piece of canvas
and rubber or other suitable material in diameter somewhat smaller than the
pneumatic or other tyre to be protected, open on the face or tread its entire length,
the two edges to be turned over with or without a metalic strip as previously
described. To attach the protective tyre the tubular piece should be coated with
rubber solution on its inuer side the entire length leaving a space along each inner
edge about three eighths of an inch wide to form two channels as previously
described. The tyre to be protected should then be enclosed and pressed firmly
until the solution is set. The metalic or other tyre may then be fixed in the
channels as previously described.
Dated this weth J
T1000

page_text: (AMENDED).
Improvements in or relating to Pneumatic and other Tyres.
I WALTER SANDELL MAPPIN of 61 Elsham Road London in the County o
Middlesex, Mechanical 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 :—
This invention relates to protective tyres for various kinds of wheels particularly
to pneumatic and other cycle wheels in order to protect them from being punctured
and from the excessive wear and tear pneumatic and other rubber tyres are now
subjected to, and the means for fixing the same.
The protective tyre is composed of steel or other suitable metallic substance,
or of vulcanite, hard rubber, canvas and rubber combined or any other suitable
material. The protective tyres are made in strips about one and a quarter inch
wide, and may be in one continuous piece or the ends may overlap each other.
The edges of the protective tyres may be straight or serrated in order to give
them greater elasticity and enable them to be held firmer in position. The
protective tyres are curved to fit the circumference of the face of the pneumatic
or other rubber tyre. In fixing the protective tyres I attach a piece of rubber and
canvas or other suitable material to each side of the pneumatic or other rubber
tyre, each piece being about one inch wide and cemented to the pneumatic or other
tyre to about one half its width thus forming a continuous channel on each side of
the face of the wheels. The unattached edges of the strips may be turned over
with or without a strip of metal enclosed to give them additional strength, the
metal or other protective tyre may then be inserted in the channels for use and
may be detached at pleasure.
In the accompanying drawings,
Fig. 1. is a plan of the metallic or other strip or band.
Fig. 2. is a section of the underside of the protective tyre made of rubber or
canvas and rubber.
Fig. 3. is a section of the metallic or other strip or band with a covering of
canvas.
Fig. 4. is a section of the top side of the protective tyre made of rubber or
canvas and rubber.
Fig. 5. is a section of the protective tyre when completed.
Fig. 6. is a section of a pneumatic tyre shewing the pieces on each side of the
tyre for securing the protective tyre.
Fig. 9. is a section of a protective tyre shewing the recess for the metalic strip
or band to be inserted.
In constructing a tyre according to my invention I take a strip of rubber or
rubber and canvas insertion of the required length and width and join the same
into a tube cc with the ordinary solution or naptha, fixing on each side a strip of
the same material as shewn in a. a. Fig. 6. The lower edges only of the strips a. a.
are cemented to the tube c. c the upper portion of the strips forming a continuous
channel to receive the protective tyre Fig. 5, the tube is then supplied with any
suitable valve for inflation or deflation and vulcanized by any ordinary process.
The tyre may be fixed to the wheel rim hh by the air pressure of the tyre or by
any suitable methods.
In making a protective tyre as shewn in Fig. 5. I take a metallic strip or band,
by preference of steel as shewn in Fig. 1. of the required width and thickness
suitably tempered and bend or curve the same to fit the circumference of the
wheel allowing the ends to overlap each other and secure the same by rivetting or
brazing thus forming a continuous band; it is then covered with cauvas and rubber
solution as shewn in Fig. 3. previous to being inserted between rubber or rubber

page_text: and canvas as shewn in Figs. 5 and 9. by cementing the parts together. It is then
to be vulcanized. In fixing the protective band onto the pneumatic tyre the latter
should be deflated, the protective tyre placed on the surface c c Fig. 6. the lower
edges d d Fig. 5 being inserted into the channels formed by the strips a a Fig. 6..
Upon reinflation the protective band will be found to be firmly fixed, the band
being rigid and inflexible transversely it may be in most cases held firmly in position
by the pressure of air only which may be under very high pressure.
I am aware that some of the elements I employ are not in themselves new but
by the above combination of parts it will be seen that as a whole I construct an
effective, inexpensive, rigid and inflexible tyre (in the sense described) for
velocipedes and other vehicles by which I attain great resiliency and speed.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what I
claim is:
1. Constructing and applying a transversely rigid inflexible, removable pro-
tective tyre for velocipedes and other vehicles, substantially as described and
illustrated in the accompanying drawings.
2. The combination or arrangement of inflated tyres with the protective_tyres
described, and the method of fixing the same substantially as described and
illustrated in the accompanying drawings.
Dated this 24th day of April 1894.
W. SANDELL MAPPIN.