Improvements in and relating to Pneumatic Tyres.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
Improvements in and relating to Pneumatic Tyres.
I, WILLIS STETSON WILLIAMS, of 9, Farringdon Road, in the City and County
of London, Merchant, do hereby declare the nature of this invention to be as
follows:-
This invention relates to a device for the prevention both of puncture and
side-slip, and it consists of a band formed of a series of short lengths of any suitable
hard or unyielding substance or material mounted on a strip or hoop of fabric, metal,
or other suitable material or substance, in close proximity the one to the other,
the exterior shape of the said band being such as will give to the tyre when
finished a narrow tread with sharp edges.
By way of example I will describe one method of carrying this invention into
practice. I form the band of a series of short pieces of wood of a suitable shape
in cross section and of a suitable length. These are then fixed by any convenient
means to a strip or hoop of canvas or other suitable material. The band thus
formed is placed in the cover of the tyre during construction between the rein-
forcing fabric and the outer rubber. The band is preferably solutioned to the
reinforcing fabric, and the outer rubber which may be simply a thin strip of
rubber is solutioned over the band and on to the reinforcing fabric.
The blocks or pieces forming the band are so shaped as to give a flat but
narrow tread with sharp edges, and they may if desired be curved on their
undersides to adapt the band to fit the section of the air tube when inflated.
As a modification the blocks or pieces may be mounted on a strip or band
of sheet steel which is preferably made flat in cross section, and if it is desired
that it should embrace the air tube, small curved pieces are rivetted or otherwise
fixed to each of its edges.
I may sometimes face the tread portions of the blocks or pieces with metal
which may be placed either over or under the outer layer of rubber.
Dated 100L 1
P
1000
Improvements in and relating to Pneumatic Tyres.
I, WILLIS STETSON WILLIAMS, of 9, Farringdon Road, in the City and County
of London, Merchant, do hereby declare the nature of this invention and in
[Price 8d.]

page_text: -1
what manner the same is to be performed to be particularly described and
ascertained in and by the following statement:
-
This invention relates to a device for the prevention both of puncture and
side-slip, and it consists of a band, formed of a series of short lengths, or blocks of
any suitable hard or unyielding substance or material mounted on a strip or hoop
of metal, fabric or other suitable material or substance, in close proximity the one
to the other, the exterior shape of the said band being such as will give to the tyre
when finished a narrow tread with sharp edges.,
In the accompanying drawing which illustrates one form my invention may
assume
Figure 1 is a view in transverse section of a pneumatic tyre constructed
according to my invention.
Figure 2 is a broken view in plan thereof.
Figures 3 and 4. are similar views showing the blocks and a modified form
thereof respectively with the outer covering removed, and
Figures 5 and 6 are broken views in longitudinal section.
Throughout the views similar parts are marked with like letters, of reference.
A band of sufficient length to form the tread or periphery of the tyre is formed
of a series of blocks or short pieces A of wood or other light unyielding material
which are fixed in any convenient manner in close proximity the one to the other
on to a strip or hoop B of metal or other suitable material. This strip or hoop B
is flat in cross section but may be ribbed or corrugated transversely and is
preferably of a less width than that of the blocks A which are attached..to it.
A convenient way of attaching the blocks A to the strip or hoop B is to screw
them to the said strip or hoop, but they may also be attached to the strip or
hoop by covering the said strip or hoop with canvas or other fabric and cementing
the blocks to this fabric.
As an alternative construction the strip or hoop B may be placed in a pocket b
formed in the canvas or other fabric, used for restraining the cover of the tyre
and the blocks A cemented thereto. Another construction is to enclose both the
blocks A and the strip or hoop B in a pocket formed in or on the restraining
fabric of the cover, the fabric of the said pocket being slit transversely between
the blocks A to give it the required flexibility. The band thus formed is pre-
ferably enclosed within the rubber coating X of the cover which is made much
thinner than usual.
The blocks A are so shaped in cross section that they give a wide base. and a
narrow tread which preferably has sharp or square edges. This is conveniently
accomplished by making them of the cross section shown by Figure 1. .In. some
cases I may form the blocks with a slightly concave tread surface so as to produce
still sharper edges for the purpose of preventing side slip. The edges a a of the
blocks which are adjacent to one another may be sloped as shown by Figures 3
and 5 to allow them to overlap each other or they may be cut square,as.shown
by Figures 4 and 6.
The tread portions a¹ of the blocks A are preferably faced with thin pieces C
of sheet metal, but this is not obligatory.
t
.
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) The improvements in pneumatic tyres substantially as hereinbefore described
and shown.
(2) In a pneumatic tyre, a band consisting of a series of blocks of wood or
similar substance mounted on a strip or hoop of metal or other material, the said
blocks being so shaped as to give the tyre a broad base and a narrow tread, as
and for the purpose set forth.
1
(3) A pneumatic tyre consisting essentially of an air tube and of a cover com-
posed of rubber and fabric in the well-known manner and having at its tread

page_text: portion a band composed of a series of blocks of wood or other like substance
mounted on a hoop or strip of metal or other material, the said blocks being of
such a shape in cross section as to have a wide supporting base and give to the
completed tyre a narrow tread, as and for the purpose set forth.
(4) A pneumatic tyre consisting essentially of an air tube and of a cover com-
posed of rubber and fabric in the well-known manner and having at its tread
portion a band composed of a series of blocks of wood or other like substance
mounted on a hoop or strip of metal or other material the said blocks being of
such a shape in cross section as to have a wide supporting base and give to the
completed tyre a narrow tread with sharp or square edges the said blocks being
faced with metallic plates as and for the purpose set forth.
Dated th
20th
£ Ontolan 1907
ROBERT E. PHILLIPS, Assoc. M. Inst. C.E., M.I. Mech. E.,
Consulting Engineer and Patent Agent,
70, Chancery Lane, London, W.C., Agent for the Applicant.