Improvements in Pneumatic Tyres.
Year: 1895

page_text: Date of Application, 8th Oct., 1895
Complete Specification Left, 3rd July, 1896-Accepted, 15th Aug., 1896
PROVISIONAL SPECIFICATION.
Improvements in Pneumatic Tyres.
I, BEWICKE BLACKBURN, of 12 Calverley Park, Tunbridge Wells, in the
County of Kent, Civil Engineer, do hereby declare the nature of this invention
to be as follows:-
The object of my invention is to strengthen the air tubes of pneumatic tyres
and enable them to bear the high pressures of air under which they have to be
distended for heavy carriages, and yet to be highly flexible. For this purpose an
endless chain is wound in close coils round the india rubber air tube, or a series of
chain rings or chain bracelets are fitted close together around the air tube. As
the flexibility is chiefly required on the exterior of the tyre which is flattened on
the road, each bracelet may consist of two semicircular parts, the one part, which
is to be outermost, made as a chain, the other or inner part as a bent strip of metal.
In like manner the continuous chain may consist of parts consisting of links
alternating with parts which are bent strips, the lengths of these parts being such
that when the chain is wound on the tube the linked portions present themselves
on the outer side of the tube. These coils or rings are then covered with thick
india rubber, or compound of india rubber and canvas or other suitable fabrics.
It is preferred to introduce a thin coat of asbestos fabric between the chains or
rings and the india rubber air tube.
Dated this 8th day of October 1895.
ABEL & IMRAI,
Agents for the Applicant.
Improvements in Pneumatic Tyres.
1, BEWICKE BLACKBURN, of 12 Calverley Park, Tunbridge Wells, in the
County of Kent, Civil Engineer, 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 :-
The object of my invention is to strengthen the air tubes of pneumatic tyres
and enable them to bear the high pressure of air with which they have to be
distended for heavy carriages, and yet to be highly flexible.
For this purpose, I construct a pneumatic tyre for a heavy carriage as I shall
describe referring to the accompanying drawings. Fig. 1 being a transverse
section and Fig. 2 a part longitudinal section of the felloe and tyre.
A is the felloe which in this case is shewn to be of wood, on this I fix by screws
or otherwise a flanged metal ring which is made in halves B B put on the felloe
one from each side.
On this ring is placed an elastic pneumatic tube C of semicircular section
covered by fabric D. Over this fabric covering are placed side by side chain
bracelets E having their extremities made as hooks F which engage under the
lower flanges of the rings B. The bracelets are covered by fabric G and caoutchouc
I Urias 27

page_text: or caoutchouc compound H which forms the tread of the wheel, these being
secured by metal rings K held by bolts and nuts L.
The bracelets E are of such strength giving such support to the pneumatic
tube C that it can be distended by air of very high pressure, which maintains the
elasticity of the tyre under very heavy loads.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
In combination with a pneumatic tyre tube a series of chain bracelets with
coverings, arranged and operating substantially as and for the purpose set forth.
Dated this 3rd day of July 1896.
ABEL & IMRAY,
Agents for the Applicant.