Improvements relating to Resilient Tyres for Wheels.
Year: 1897

page_text: Date of Application, 9th Feb., 1897-Accepted, 1st May, 1897
COMPLETE SPECIFICATION.
Improvements relating to Resilient Tyres for Wheels.
We, JOHN M° ALPINE, of 68 Grove Green Road, Leyton, Essex, Engineer,
and THOMAS STAMPS ALLDEN, of 46 Ashley Road, Crouch Hill, Middlesex,
Accountant, 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 has for object, special combinations or arrangements of rubber or
like blocks and spring steel bands as resilient bodies between the rim and the cover
of a tyre, the cover edges being looped or hooked over reverse loops or hooks in the
outside portions of the rim.
Our invention will be clearly understood by reference to the annexed drawings.
Figure 1 is a section of part of a tyre according to one of our arrangements and
in which a wavy strip of spring steel locates a series of rubber blocks between the
rim and a plain band of spring steel next the cover.
Figure 2 is a similar section of a tyre in which the outer band of steel is dispensed
with, and having the wavy band composed of short lengths connected at their ends
by bolts which pass through them and the rim, said connected ends being supported
by transverse strips which rest upon curved parts or shoulders provided for them
within the rim.
Figure 3 is a similar section of tyre in which both the wavy and the plain steel
bands are employed as with the arrangement shown at Figure 1, but in which fewer
blocks of rubber are used to give the wavy band more resiliency than with the
arrangements shown on the two previous figures.
Figure 4 is a similar section to that shown at Figure 2 in so far as the short
lengths of the wavy band are concerned but with their ends connected to the cross
pieces and to the outer band respectively.
Figure 5 is a section of a tyre with outer band dispensed with but having
different shapes of rubber blocks arranged alternately in the curved openings
formed respectively between the wavy band and the rim and between the wavy
band and the cover.
Figure 6 is a transverse section of a tyre such as through the lines a, a, of
Figure 4; Figure 7 being a transverse section through the lines b, b, of Figure 2
and Figure 5 as adapted for the wheels of a velocipede or other light vehicle.
Figure 8 transverse section of tyre through the line b, b, of Figures 2 and 5
as adapted for the wheels of a motor or heavy vehicle.
Figure 9 transverse section of same tyre through the line b, b, Figures 2 and 5.
Figure 10 indicates how the blocks next the cover can be moulded to form
part of same, so that in building up a tyre the inner block and the wavy steel
band can be placed in position around the rim and then the combined blocks
and cover can be stretched over them and the cover edges dragged over the
hooks on the outside of the rim.
According to Figures 2 and 3, what we may term outer blocks are those
through which the outer loops of the wavy band are passed by a threading on
action, as marked A in Figures 2, 5, 7, 8, and 9, or by fitting separate blocks
on the outer loops of the wavy band, as marked B Figure 3. If the rubber
blocks are intended for light wheels, such as for velocipedes, pony carts, and
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page_text: other light vehicles we prefer the plain hollow moulded blocks like the one
marked C in Figure 7, whether the wavy band D be passed through the slots,
as before explained, or whether the upper parts be separate and only fitted on
the loop of the wavy band, as at B, Figure 3.
The attachment of wavy strips D in short lengths to each other, as at
Figure 2, and to the rim as at E, Figure 2, or to themselves and to the outer
band F, as at Figure 4, serves to localize their positions but where no outer
band is employed, as at Figures 2, 5, 7, 8, and 9, the curves of the wavy band
will be sufficient for that purpose, whether it be continuous for blocks to be
laid in the loops only, or have its two ends connected after lacing the blocks
on, or whether the wavy band be in short lengths and have the blocks laced
on, or be laid in.
If the blocks be for the wheels of heavy vehicles and require wide treads,
the inner faces of the blocks i.e. next the rim E, can be made cellular with
partitions H, as at Figures 8 and 9, and these partitions may be of sufficient
depth as to rest upon the rim E, as at Figure 8, or to rest upon the bottom
loop of the wavy band D, as at Figure 9.
The blocks may be solid or hollow, but if hollow they have at least one open
face, as will be understood by the right and left hand sides of Figures 1 and 2
respectively.
The cover G is of any flexible material, preferably rubber and canvas like
those now so well known, and to the selvedge edges of which we form internal
books, as at I, for engaging within loop like flanges J, Figures 6, 7, 8, and 9,
but any other system of securing the cover G on can be adopted, as desired.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed we declare that what
we claim is :-
1. In a wheel tyre, the combination of resilient blocks moulded to shape and
set alternately in reversed position between the rim and outer band, said blocks
supporting and being supported by a wavy spring band, as described and represented
at Figure 1 of the annexed drawings.
2. In a wheel tyre, localizing a wavy spring band (continuous or in short lengths
connected as set forth) and employing resilient blocks therewith moulded to shape
with or without an outer band, and whether the outer portions of some of the blocks
be slotted or have filling-in pieces, as described and shown with reference to the
annexed drawings.
D
..
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H. GARDNER,
Patent Agent, 166 Fleet Street, London,
Agent for the said John M'Alpine and Thomas Stamps Allden.