Improvements in and connected with Pneumatic Tyres and Wheel Rims for the same.
Year: 1893

page_text: Date of Application, 11th Jan., 1893
Complete Specification Left, 11th Oct., 1893-Accepted, 11th Nov., 1893
PROVISIONAL SPECIFICATION.
Improvements in and connected with Pneumatic Tyres and Wheel
Rims for the same.
WILLIAM HUNTER Watchmaker 9 Airlie Terrace Dundee, in the County of
Forfar, N.B. do hereby declare the nature of this invention to be as follows:-
My invention relates to an improved construction of those parts of velocipede or
other wheels which are connected with the tyre and rim.
The first part of my invention consists of a rim having inclined planes and
recurved edges, which, in combination with the usual wired or hooped edges of the
cover or lining, provides an accurate and reliable tyre.
My invention decreases the tendency to rolling of the tyre, it also ensures truth
and accuracy in the finished wheel; and in the event of accidental deflation ensures
the possibility of riding without damaging the tyre. It also prevents mud or water
lodging about the tyre.
In carrying this part of my invention into practice I provide a rim of shallower
form than the well known "Dunlop" rim, and in place of the flat or nearly flat
surfaces of the Dunlop rim I provide inclined planes ending in recurved edges,
which edges are formed out of the metal of the rim itself or added thereto in the
form of a beading. The pneumatic tube along with its usual cover or coverings,
and provided with the now well known hoops or rings are placed while in a deflated
condition on the rim, the depth of which is sufficient to allow the wires or rings
with the cover to pass over the edge of the rim and come into position at the lower
portion or base of the inclines. On inflation, the tyre becomes securely fastened by
the advance of the rings up the inclined planes and the tyre is also adjusted truly,
in relation to the rim, when the rings or hoops are finally arrested and gripped by
being jammed into the aforesaid recurved edges.
This gripping or jamming of the cover with its hoops secures the whole very
firmly and supports and relieves the hoops or rings from additional incidental
strains set up when the wheel is in action on the road.
The second part of my invention relates to the canvas cloth or other lining of the
cover, and consists in forming the same by first slitting the lining crosswise to a
sufficient extent to enable it to accomodate itself more accurately to the air tube,
and thereafter affixing by any convenient means such as cement or stitching or
both, a strip or strips of canvas or other material, on the slitted portion, preferably
on the underside. The said strip or strips are of sufficient width to completely
cover and overlap the said slits. This lining is usually of canvas but I do not
limit myself to that material.
Dated this 10th day of Tan 1902
WILLIAM HUNTER.
COMPLETE SPECIFICATION.
Improvements in and connected with Pneumatic Tyres and Wheel
Rims for the same.
I WILLIAM HUNTER of 9 Airlie Terrace Dundee in the County of Forfar,
Watchmaker, 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 relates, firstly, to an improved construction of those parts of
velocipede or other wheels which are connected with the tyre and rim whereby the

page_text: tyre and rim are more securely and truly fastened together and also more perfectly
kept in truth during running and secondly, to an improved method of forming the
canvas or other lining of the tyre whereby it accommodates itself more perfectly to
the tyre when inflated.
I carry the first part of my invention into practice by providing a rim, preferably
of shallow section, having inclined planes and recurved edges. I combine such a
rim with the usual wired cover or cover lining. Ou infation of the tyre the wires
of the cover or lining advance up the inclined planes and finally are arrested and
gripped by being jammed into the aforesaid recurved edges. They are thus held
truly and immovably in position. I thus provide an accurate and reliable fastening
between the tyre and rim which resists effectively the strains tending to shift or
displace the tyre which are set up when the wheel is in action on the road.
In order that the nature of my said invention may be clearly understood I will
.escribe the same with reference to the accompanying sheet of drawings.
Fig. 1 is a transverse section of the complete tyre. A represents the rim of the
wheel with inclined planes at B and the recurved portions at C. These recurred
portions may be formed out of the metal of the rim itself or they may be made
separately and attached by soldering or rivetting.
G is the ordinary air or pneumatic tube. H is the usual canvas or other lining
the edges of which are lapped and attached to the wires at K. The ends of the
wire rings or hoops may be connected by a nipple with a right and left hand screw
or by flattening the wire and bending it into a hook at each end which hooks are
kept in position and prevented from injuring the air tube by a small metal sleeve
which slides over them and keeps all secure or by any other suitable method.
The second part of my invention relates to an improved method of making the
lining of the cover. I first slit the canvas or other suitable material crosswise to
an extent sufficient to enable it to accommodate itself more accurately to the inner
or air tube and thereafter I affix a strip or strips of canvas or other material on
the slitted portion preferably on the underside either by cementing or stitching or
both or by other couvenient means; said strip er strips of canvas are of sufficient
width to cover and overlap the said slits.
The edges of the canvas are affixed in the usual way to the retaining wires.
In Fig. 2 is shown a longitudinal section of the canvas lining L is the wired
edges of same, and M is the slits: the dotted line at N indicates the position of
the covering strip. An additional strip or strips may be added to strengthen the
tread.
I am aware that Dunlop in his Patent No. 6126 A.D. 91 claims the combination
of a wire secured cover and special section rim with deep central groove and right
angled edges.
Having now particularly described and ascertained the nature of my invention
and in what manner the same is to be performed I declare that I do not claim
securing the pneumatic tyre on the rim of a wheel by means of wires as I am aware
that such means are old; but what I claim is :-
:―
First. In a velocipede or other wheel having a pneumatic tyre, the combination
of a wired tyre or tyre lining with a rim having recurved edges substantially such
as is herein before described for the purpose specified.
Second. In a velocipede or other wheel having a pneumatic tyre, the tyre lining
provided with accommodation slits substantially such as is hereinbefore described
for the purpose specified.
Dated this 10th dow of Otohon 1902.
WILLIAM HUNTER.