Improvements in Covers or Envelopes of Pneumatic Tyres.
Year: 1896

page_text: PROVISIONAL SPECIFICATION.
Improvements in Covers or Envelopes of Pneumatic Tyres.
We, ROBERT BELL and WILLIAM. THOMAS HALL, of 2 Whitburn Terrace, South
Shields Manufacturers do hereby declare the nature of this invention to be as
follows:-
This invention has for object, certain improvements in covers or envelopes for
Pneumatic Tyres, the fixing of which is dependent upon certain wrappings or
insertions of the article itself without extraneous or additional appliances for
fastening the cover in place, as at present.
To carry our invention into practice, we employ a length or strip of strong
canvas cut on the bias which forms a sett, part of this has on its inner side a thick
unstretchable canvas to, say, rather more than half the circle or circumference
of the Tyre, the other part being left plain except at the flap edge which may
not only be coated or embedded in solution but have a thick exterior forming the
tread and this may be plain, serrated, chequered or otherwise indented or have ribs
for grip on the road.
The canvas at the tread edge is extended loosely and is available for folding
back to form a reverse flap. A portion of the bias canvas has also a reverse flap
for interlocking purposes with the other fold back flap.
The outer jacket may be attached to the rim by solution or by rivetting or as
desired.
The inflation of the Pneumatic tube fixes the cover, and is easily removed after
deflation.
or Envelopes
euma
Tyres.
We ROBERT BELL and WILLIAM THOMAS HALL of 2 Whitburn Terrace, South
Shields, Manufacturers 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 certain improvements in covers or envelopes for
Pneumatic tyres the fixing of which is dependent upon certain wrappings or
insertions of the article itself without extraneous or additional appliances for
fastening the cover in place as at present,

page_text: The invention will be clearly understood by reference to the annexed drawings,
in which
Figure 1 is an elevation of canvas cover in an open condition.
Figure 2, section of tyre with canvas cover rolled and the flaps reversed and
interlocked.
To carry our invention into practice we employ a length or strip of strong
canvas A, cut on the bias which forms a sett part of this has on its inner side a
thick canvas B as a flap the other part being left plain except at the flap end C
which may not only be coated or embedded in solution but have a thick exterior
forming the tread D and this may be plain, serrated, chequered or otherwise
indented or have ribs for grip on the road.
The canvas B at the tread edge is extended loosely and is available for folding
back to form a reverse flap; the opposite portion E of the bias canvas A has also
a reversable flap F for folding back and interlocking purposes with the other fold
back flap B. The flaps B. F. may be formed from the canvas A by folding and
cementing back certain parts as at Figure 3.
According to Figures 4 and 5 we show a modified method of arranging the
flaps B. F. where by their simple approach of one within the other the inter-
locking is effected without the fold back.
The outer jacket thus formed may be attached to the rim G by solution or by
rivetting or as desired.
The inflation of the pneumatic tube H fixes the cover and is easily removed
after deflation.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed we declare that what we claim
is:-
1. As a cover for a pneumatic tube or wheel tyre the particular arrangement
of canvas A cut on the bias and the two flaps B.F. on reverse sides of the canvas A
as means when the canvas A is rolled (to overlap) for interlocking each other by
a fold back of one within the other as set forth and as shown at Figures 1, 2 and 3
of the drawings.
2. The modified method of arranging the flaps B. F as shown at Figures 4 and
5 of the annexed drawings whereby the interlocking of the flaps is effected without
being folded back as and for the purposes described.
This 30th day of August 1807
H. GARDNER,
Patent Agent, 166 Fleet Street, London.
Agent for the said R. Bell and W. T. Hall.
H. GARDNER,
Patent Agent, 166 Fleet Street, London.
Agent for the said R. Bell and W. T. Hall.