Improvements in and connected with the Detachable Covers of Pneumatio Tyres for the Wheels of Velocipedes and Road Vehicles.
Year: 1894

page_text: Date of Application, 29th Sept., 1894
Complete Specification Left. 1st July, 1895-Accepted, 3rd Aug., 1895
"
PROVISIONAL SPECIFICATION,
Improvements in and connected with the Detachable Covers of
Pneumatio Tyres for the Wheels of Velocipedes and Road
Vehicles.
We, ROBERT WILLIAM EDLIN, of 299, Bradford Street, in the City of
Birmingham, Pneumatic Tyre Manufacturer, and RICHARD GREEN, of 299, Brad-
ford Street, aforesaid, Mechunician, do hereby declare the nature of this invention
to be as follows :-
4
Our invention consists firstly of an improved construction of the wire rings which
are used in the edges of some kinds of detachable covers of pneumatic tyres for
engaging with the wheel rim to secure the outer covering theroto round the inner
air tubes and our invention consists secondly of a detachable cover for pneumatic
tyres having in each of its edges one of the wire rings forined in accordance with
the first part of this invention.
We make the said wire ring as follows, so that we neither have to braze the ends
of the wire together (which has a detrimental effect of softening the wire) nor do
we have to use a screwed nipple or any other joint connection, nor splice the ends
of the wires as is done in stranded wire rings as heretofore made for the above
purposes. We take a piece of wire of suitable thickness and say for instance of a
length equal to two or more times the circumference of the required ring according
to whether the ring is to be made of 'two or more thicknesses of wire. At a certain
'distance from the ends of this wire we bend the wire into a ring somewhat larger
in diameter than the required ring and we then twist the other portions of the
wire round this ring so as to made the ring of apparently two or more strands
twisted together, but in reality it is the same strand continued round and round,
the two ends of the wire meeting and overlapping or not as may be desired. The
fact of coiling the remaining portion of the wire round the wire ring as aforesaid
slightly reduces the diameter so as to 'make the finished ring of the required size.
We thus form a stranded wire ring without a joint and which is of the same
strength throughout."
The stranded wire rings formed in accordance with this invention are or may be
fixed in the edges of the detachable covers of pneumatic tyres in any of the ways
as now adopted when fixing other kinds of wires in the edges of the said covers.
Dated this 28th day of September 1894.
CHARLES BOSWORTH KETLEY,
Agent for the Applicants.
COMPLETE SPECIFICATION.
Improvements in and connected with the Detachable Covers of
Pneumatic Tyres for the Wheels of Velocipedes and Road
Vehicles.
We, ROBERT WILLIAM EDLIN, of 299, Bradford Street, in the City of
Birmingham, Pneumatic Tyre Manufacturer, and RICHARD GREEN, of 79, Walford
Road, Sparkbrook, Worcestershire, late of 299, Bradford Street, aforesaid,
TDJ1

page_text: Mechanician, 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 consists firstly of an improved construction of the wire rings
which are used in the edges of some kinds of detachable covers of pneumatic tyres
for engaging with the wheel rim to secure the outer covering thereto round the
inner air tube; and our invention consists secondly of a detachable cover for
pneumatic tyre having in each of its edges one of the wire rings formed in
accordance with the first part of this invention.
By this invention we are enabled to form a stranded wire ring without a joint
and which is of the same strength throughout. Thus we neither have to hraze the
ends of the wire together (which has a detrimental effect of softening the wire)
Dor do we have to use a screwed nipple or any other joint connection nor splice
the ends of the wires as is done in stranded wire rings as heretofore made for the
above purposes.
We will describe this invention by referring to the accompanying drawings in
which
Fig. 1 represents a stranded wire ring formed in accordance with this
invention;
Fig. 2 shewe how the ends of the wire forming the ring are finished off;
Figs. 3 and 4 illustrate the formation of the stranded wire ring shewn in Figs. 1
and 2, and
Fig. 5 illustrates a slight variation of the method illustrated by Figs. 3 and 4;
Fig. 6 shews a portion of the well-known form of outer covering for the air
fube of a pneumatic tyre provided with two of our stranded wire rings for fixing
the said outer covering round the wheel rim.
The same letters of reference indicate the same or corresponding parts in all
the figures.
In forming a jointless stranded wire ring in accordance with this invention, we
take a piece of wire of suitable thickness and say for instance of a length equal to
two or more times the circumference of the required ring according to whether the
ring is to be made of two or more thicknesses of wire. As the ring shewn by Fig. 1
is made of three plys or thicknesses of wire, the piece of wire shewn by Fig. 3 is a
little longer than three times the circumference of the ring. At a certain distance
from the ends of this wire we bend the wire into a single wire ring A slightly
larger in diameter than the required ring and we then twist the other
portions A2 A3 of the wire round and with this ring A¹ so as to make the finished
ring of apparently two or more strands, say three strands as shewn in Fig. 1
twisted together, but in reality it is the same strand continued round and round,
the two portions A A³ of the wire meeting and by preference overlapping as shewn
in Fig. 1.
This method of forming the jointless stranded wire ring will be quite clear by
an examination of Figs. 1, 3 and 4 where it will be seen in Fig. 3 that after the
wire has been twisted at a to form the single strand wire ring A', the other
portious A3 A3 of the wire are each twisted half round the ring A which will itself
be twisted and it will then have the appearance of a two ply stranded ring shewu
in Fig. 4. The portions A2 A³ of the wire are then respectively twisted half
round this ring so as to lie between the other strands and they will then meet and
overlap and the ring will have the appearance of a three ply stranded wire ring
shewn by Fig. 1. The effect of coiling the portions A' A³ of the wire round the
wire ring A as aforesaid slightly reduces the diameter of the ring so as to make
the finished ring shewn by Fig. 1 of the required size. We thus form a stranded
wire ring without a joint and which is of the same strength throughout. As before
stated the overlapping ends A' A' shewn in Fig. 1 may be bent down and coiled
between the other strands round the ring as far as they will reach (as shewn in
Fig. 2) and then they may be soldered if desired so as to prevent their standing
out and being liable to catch in the outer covering.

page_text: In the slightly modified method of carrying out our invention as shewn by
Fig. 5, the single strand wire ring A' is formed very near the end A³ of the wire,
and the other portion A' of the wire is then twisted twice round and with the
ring A so that the finished ring will have the same appearance and be precisely the
same as shewn in Fig. 1. In making the rings the length of wire is by preference
wound on a shuttle or shuttles so that it can be more conveniently twisted round
and with the ring as above described.
In using the stranded wire rings, formed as above described in accordance with
this invention, two of the said rings are fixed in the two edges of the detachable
cover of a pneumatic tyre, as shewn for instance by Fig. 6, for securing the
said cover to the wheel rim round the air tube, this fixing of the two rings in the
outer cover being performed in the usual way during the process of forming the
outer covering as is adopted when fixing other kinds of wire rings in the edges of
the said outer coverings.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
1. The herein described improved stranded wire rings for the detachable covers
of pneumatic tyres of wheels of velocipedes and road vehicles, each of the said wire
rings being made from one piece of wire which is first bent into a single strand
ring of a little larger diameter than the finished ring and is then twisted one or
more times round and with this ring so as to form a stranded wire ring without a
joint and of uniform strength throughout its circumference, substantially as
hereinbefore set forth.
2. The combination with a detachable outer cover of a pneumatic tyre of two
jointless stranded wire rings made as denoted under Claim 1 and secured in the
edges of said outer covering as and for the purpose herein before set forth.
Dated this 29th day of June 1895.
CHARLES BOSWORTH KETLEY,
Agent for the Applicants.