Attachments for Pneumatic Tyres for Bicycles or other Vehicles.
Year: 1896

page_text: PROVISIONAL SPECIFICATION.
Attachments for Pneumatic Tyres for Bicycles or other Vehicles.
LEWIS OWEN MICHAEL 88 Bordesley Green Birmingham Manufacturer .do hereby
declare the nature of this invention to be as follows:-
The object of my invention is to so attach the outer cover of a Pneumatic
Tyre to the rim of the wheel that it shall remain firmly attached whether the inner
tube be inflated or deflated, and at the same time is not dependent on
non-Extensible Edges to hold it on the rim.
In carrying out my Invention I employ a rim for the wheel made with a
Tubular Edge but having an opening on its outer side. I then make the outer cover
of the Pneumatic Tyre with a head on its Edge this head can be made single or
double. I prefer to use a double head as being more secure, and the second
head I make to project inwards more than the first These heads are made
horizontal with the cover and are in that position inserted in the opening of the
tubular Edge of the rim, and on the cover being brought around the rim the heads
jam in the opening of the Tubular Edge and so prevent its coming out while the
sides are in that vertical position.
I may also make a rim with a tubular Edge having its opening on the inner side
of the rim, and use a cover with a similar head, but in practice I prefer to have
the opening on the outer Edge, as being most easily worked.
To detach the cover it has only to be drawn down to a horizontal position when the
head will come out of the Tubular Edge quite Easily.
Dated this 16th day of December 1896.
COMPLETE SPECIFICATION.
Attachments for Pneumatic Tyres for Bicycles or other Vehicles.
I LEWIS OWEN MICHAEL of 79 Whitmore Rd Small Heath Birmingham late of 88
Bordesley Green in the County of Warwick Manufacturer 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 :-
My invention has for its object the attachment of the outer cover of a pneumatic
tyre to the rim of the wheel in such a manner that it remains firmly attached
whether the inner tube be inflated or deflated while at the same time my tyre not
being dependent upon nonextensible edges to the outer cover is easily attached and
detached either in whole or any part alone.
In order that my invention may be clearly understood and easily carried into
effect I have added hereto a sheet of drawings upon which I have fully illustrated
the nature of my said improvement.
Figure 1 is a cross section of my tyre when inflated.

page_text: Figure 2 is a cross section of the rim shewing the first process in the attachment
of the outer cover.
Figure 3 is a similar cross section to Figure 2 but shewing the second process of
attachment of the cover.
Figure 4 is a cross section shewing the position of the outer cover when the wheel
is running and the tyre deflated.
Figure 5 is a part side elevation. shewing a modification in the edge of the outer
cover.
Figure 6 is a section through the bead of the outer cover shewing a special form of
construction of same.
In carrying my invention into effect I provide a rim A having on each side the
tubular er grooved edges a¹ with openings a2 on the outside of the tubular edge.
Upon the edges of the outer cover B the beads b¹ are provided which may be made
double as shewn by Figure 6 where the second bead 6 is made to project further
inwards than the first b For attachment of the cover B to the rim A the cover
B is first turned inside out and the bead b¹ on the one side is inserted in the
opening a while the cover is in the horizontal position shewn by Figure 2. after
which the cover is turned over and the reverse side 'pulled down by the thumb
and fingers until the bead part of that side is in or below the horizontal position
shewn by Figure 3 at which time the bead 61 is pressed into the opening a2 on that
side and as the cover takes its natural curve the sides 62 of the cover occupy a vertical
position and the thickest part 63 of the bead engages with the one side as of the
opening a² of the tube. the other or thin edges 6 of the bead bearing against the
reverse side a of the tube opening by which means the bead edge 61 is prevented from
leaving the tube a¹ so long as the sides 62 are vertical to the rim A or even when the
sides 62 are at an angle such as in the depressed and deflated tyre shewn by Figure 4
the outer cover B is still retained on the rim but can easily be removed when the
sides of the cover B are pulled into or below the horizontal position as before
described. The detachment of the cover B is effected in a similar manner to that of
the attachment only that when the side of the cover is pulled or pressed into the
horizontal position described the bead is withdrawn from the tube instead of being
pressed into it as for attachment and any part of the outer cover B however short or
long can be detached and attached without disturbing the remainder.
If desired the beads may be disconnected or severed in their lengths as shewn at
65. Figure 5 with equal effect although for cheapness I prefer to form them of a
continuous length say of two cords 66 and 67 Figure 6. It will be seen that when
the tyre is running in a deflated condition as seen in Figure 4 there are no edges on
the rim to injure the outer cover as the whole of the pressure is received by the
outside as of the tubular edges a Although in practise I prefer to have the
openings a² on the outsides of the rim as being most easily worked I do not confine
myself to the exact position here shewn as 'I may form them on the inner sides of the
tubes if so desired.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what I
claim is
In pneumatic tyres for cycles or other vehicles the combination of an outer cover
B having beads such as 61 a rim A having tubular edges al and openings a²
substantially as and for the purpose herein described and shewn upon the
accompanying drawings.
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Candomben 1907