Improvements in the Means of Protecting Pneumatic and other Flexible Tyres on the Wheels of Bicycles, Tricycles, and Road Carriages.
Year: 1891

page_text: The decision of the Comptroller-General, of the 17th day of October 1892, allowed,
under Section 18 of the Patents, &c. Act, 1883, an Amendment of this
Specification.
Date of Application, 17th July, 1891
Complete Specification Left, 19th Apr., 1892-Accepted, 21st May, 1892
PROVISIONAL SPECIFICATION.
Improvements in the Means of Protecting Pneumatic and other
Flexible Tyres on the Wheels of Bicycles, Tricycles, and Road
Carriages.
We, ALFRED NORMANTON and HERBERT NORMANTON both of Stretford
Road Manchester in the County of Lancaster Agents, do hereby declare the nature
of this invention to be as follows:-
This invention relates to protectors primarily for pneumatic tyres, but is alike
applicable to all descriptions of flexible tyres such as are used on bicycles,
tricycles, and light road vehicles, and the object of this invention is to prevent the
perforation and consequent destruction of pneumatic tyres, or injury to other forms
of flexible tyres, when running over stony ground, newly metalled roads, and uneven
surfaces.
In this invention we construct a shield or covering for tyre, by means of a band
or strip of strong canvas or other suitable material of a length sufficient to be
placed round the edge of the wheel, and of a width sufficient to cover the tyre.
We form said band or strip with a stitched or selvage edge, in which we place
eyelet holes at convenient distances apart.
We rivet, cement, or otherwise attach to one side of said strip or band, a
succession of rectangular pads formed of leather, vulcanized rubber, or other
suitable material, the length of each of said pads corresponding to the length or
extent of tyre resting on the ground. These pads may either be formed flat on
both sides, or may be curved on the inner side to the same curve as the tyre.
The band or strip to which the leather or other pads are attached, we secure to
the rim of the wheel by placing said canvas strip on and around the outer edge of
the wheel and passing a lace backwards and forwards through the aforesaid eyelet
holes, and over the back of the tyre and rim: by these means a perfect shield or
protector is formed, which will yield or adapt itself to the compression of the tyre.
In a modification of our invention we cement or otherwise secure the aforesaid
pads, directly to the pneumatic or other tyre, without the intervention of a canvas
or other backing.

page_text: COMPLETE SPECIFICATION (AMENDED).
Improvements in the Means of Protecting Pneumatio and other
Flexible Tyres on the Wheels of Bicycles, Tricycles, and Road
Carriages.
We ALFRED NORMANTON and HERBERT NORMANTON both of Stretford Road
Manchester in the County of Lancaster Agents 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 aud by the following statement :—
This invention relates to protectors primarily for pneumatic tyres, but is alike
applicable to all descriptions of flexible tyres such as are used on bicycles, tricycles
and light road vehicles, and the object of this invention is to prevent the
perforation and consequent destruction of pneumatic tyres or injury to other forms
of flexible tyres when running over stony ground newly metalled roads and uneven
surfaces.
We attain this object by the means hereinafter described and as illustrated in
the accompanying sheet of drawings; in the several views shown therein. similar
letters refer to similar parts.
Fig. 1 is side view of a protector or shield constructed according to this
invention, with one side partly removed to show the interior:
Fig. 2 is an edge view of the same partly in section:
Fig. a portion of the same protector or shield stretched out flat in order that
the construction may be clearly defined:
Fig. 4 is a perspective view of a wheel having a pneumatic. tyre with the afore-
said protector or shield applied:
Fig. 5 shows a portion of the same wheel in section drawn to an enlarged, scale.
In this invention we construct a shield or protector for tyre in the form. of a
covering, by means of a band or strip of strong canvas a or other like material
and rubber vulcanized together of a length sufficient to be placed round the outer
edge of the wheel and of a width sufficient to cover the tyre: said canvas and
rubber strip may be formed flat. as in Fig. 3, but we prefer to treat the canvas and
rubber so as to mould it into a semicircular or U. shape as represented in Figs.. L
and 2. with a rubber wearing surface at a¹ and canvas edges. e.
We attach to the inside in the centre of aforesaid band or strip a by
cementing thereto or by other preferred means a succession of narrow pieces, or
pads of leather or other non-penetrable material b. The length in a forward
direction from n to o of each of these pieces of leather or material is preferably
such as will correspond to the length or extent of that portion of the tyre that
may rest on the ground at any one moment.
We affix said pieces or pads of leather to the inside of the hereinbefore described
canvas band a in the positions represented in Fig. 3. with their convergent. edges q
slightly apart when said shield or protector is placed out flat, so as not to overlap
each other, and perfectly level on the surface; these pads of leather may be either
of a uniform thickness as in Fig. 6 or they may be thicker in the centre than at
the edges as in Fig. 7. and may be either flat strips or moulded to. any, required.
curve as in Fig. 8. The width of these pads from b¹ to & may, be varied according
to the extent of the surface of the tyre it is désired to protect.
In applying this our invention to a pneumatic or other tyre we place the strip or
band a to which the pads b are.affixed, over, and around the outside of said tyre so
that the aforesaid pads come over the wearing surface of the tyre, and the selvage
edges e of the band a extending up over the edges of the rim f of the wheel g; we
pass a lace c through the eyelet holes d formed near the edges of the band a and
cross said lace backwards and forwards over the back of the rim of the wheel as in
Fig. 4. thereby securely fastening the cover forming the shield or protector over.
and to the tyre h.

page_text: The aforesaid lace is preferably elastic but leather or other like laces may be
used. By these means a perfect shield or protector is formed, as when the weight
on the tyre causes said tyre to deflect or flatten on the tread or that part that is in
contact with the surface of the road, the hereinbefore described leather pads b
are brought close together at the divisions 6ª and practically form a continuous
non-penetrable covering while yielding or adapting itself to the compression of the
tyre.
In a modification of our invention we cement or otherwise secure the aforesaid
leather or other pads or protectors directly to the pneumatic or other tyre without
the intervention of a canvas or other backing.
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 :-
A shield or protector in the form of a covering constructed of a succession
of narrow pads of leather or other non-penetrable substance secured to
the inside of a strip or band of canvas or like material with their convergent edges
slightly apart when the shield or protector is placed out flat in order that said pads
may not overlap each other when placed round the tyre and may have a perfectly
level surface, for placing over and around any perfectly finished and completed
pneumatic or other elastic tyre in the manner and for the purpose substantially as
herein before described.
2. The application to the external covering of a pneumatic or other elastic-tyre,
of leather or other like pads cemented to, or otherwise attached to the wearing
surface of said covering
THOMAS
PRESCOTT,
53, Arcade Chambers, St. Mary's Gate, Manchester, Agent for Applicants.