Improved Grip or Attachment Appliances for Pneumatic Tyre Covers.
Year: 1898

page_text: Date of Application, 25th July, 1898
11
00
J
OLL
1000
PROVISIONAL SPECIFICATION.
Improved Grip or Attachment Appliances for Pneumatic Tyre Covers.
I, FELIX DENNIS, of The Railway Hotel, Church End, Finchley, County of
Middlesex, Hotel Proprietor, do hereby declare the nature of this invention to be
as follows:
This invention relates to means for fixing covers on pneumatic tyres, and con-
sists of three straight or square walled ribs, on the cover near the two edges.
The straight or square ribs may be of cane, whalebone, metal, or other material
secured to or embedded in the canvas or rubber solutioned to overlap and enclose
them.
One edge of the cover has two of the straight or square walled ribs, and the
other, one only, which when placed in position between the other two ribs form
the means for locking one edge to the other with a rigid connection due to the
inflation of the inner tube, the ribs and the extension edges of the cover finding
a lodgment in the hollow of the rim which may be as shallow or nearly flat, as
desired.
By this invention, there is no tendency for the tyre to blow or to move side-
ways, the connection of the cover edges by the square or straight ribs affording a
side pull in opposite directions which keeps the bonding central and makes the
grip or attachment most effective.
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said Felix Dennis.
Improved Grip or Attachment Appliances for Pneumatic Tyre Covers.
I, FELIX DENNIS, of The Railway Hotel, Church End, Finchley, County of
Middlesex, Hotel Proprietor, do hereby declare the nature of this invention and
in what manner the same is to be performed to be particularly described and ascer-
tained in and by the following statement:-
This invention relates to means for fixing covers on pneumatic tyres, and con-
sists of three straight or square walled ribs, on the cover near the two edges.
The straight or square ribs may be of cane, whalebone, metal, or other material

page_text: secured to or embedded in the canvas or rubber solutioned to overlap and enclose
them.
Ouc edge of the cover has two of the straight or square walled ribs, and the
other, one only, which when placed in position between the other two ribs form
the means for locking one edge to the other with a rigid connection due to the
inflation of the inner tube, the ribs and the extension edges of the cover finding
a lodgment in the hollow of the rim which may be as shallow or nearly flat as
desired.
By this invention, there is no tendency for the tyre to "
blow" or to move side-
ways, the connection of the cover edges by the square or straight ribs affording a
side pull in opposite directions which keeps the bonding central and makes the
grip or attachment most effective.
My invention is clearly represented on the annexed drawings in which Figure 1
shows a plain surfaced pneumatic tube cover in section with my three straight
walled ribs cemented, rivetted, or otherwise affixed. Figure 2 similar section of
my three straight walled ribs enclosed in the fabric forming the base of the cover
and on to which the rubber is moulded in the well known manner. Figure 3
represents section of a pneumatic tyre complete with my three straight walled
ribs interlocked and in position in relation to each other when on the rim of a
wheel.
The same letters of reference apply to all the figures.
A, straight or square walled rib near one edge B of the cover C of which D)
forms the tread. E, E, two straight or square walls near the other edge F of the
cover, these being so prepared that the ribs can interlock each other, as at Figure 3,
can rest upon a centrally flat faced rim of a wheel.
According to the section shown at Figure 1, the ribs A, E, E, can be rivetted
to the cover canvas such as would be the case if of cane or whalebone, or if of
butt leather the ribs could be sewn on to the canvas, but if of metal the ribs can
be cemented and embedded in the cover canvas.
I am aware that an interlocking of ribs has been previously effected in the rims
of cycle wheels, pneumatic and other, but those ribs have inclined sides to engage
undercut like lips of the rim or of the cover.
My invention is therefore limited to three straight walled ribs of the cover
which can interlock each other by a straight down pressure for engagement and
a straight up-lift for disengagement.
The ribs of my invention are not necessarily in continuous rings because they
may be in segments so arranged that each segment can be gradually inserted into
the hollow of a rim in succession and the ends be made to meet butt-end on to
each other and so cause the segmental ribs to assume the ring like formation.
The rim may be almost or entirely flat, the inflation of the inner tube G being
sufficient to fix and maintain the grip of the cover on or in the rim, should there
be any looseness of the cover when in position.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed I declare that what I
claim is-
1. The triplicate ribbed cover of pneumatic tyre, each rib having a straight
wall for interlocking by side surface contact or improved grip in the manner set
forth and shown on the annexed drawings, Figures 1, 2, and 3, for the purposes
explained.
The 22nd day of April 1899.
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said Felix Dennis.