Improvements in Appliances for the Removal from and Replacing of Pneumatic Tyres on Wheel Rims.
Year: 1899

page_text: Date of Application, 2nd Nov., 1899-Accepted, 9th Dec., 1899
COMPLETE SPECIFICATION.
Improvements in Appliances for the Removal from and Replacing of
Pneumatic Tyres on Wheel Rims.
I, ALBERT CLAYTON PALMER, of Euroa, in the Colony of Victoria, Miller, 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 consists of a novel appliance for manipulating (that is, removing
from and replacing on the rim) pneumatic cycle tyres, or rather that external
tyre which is usually termed the cover, because it usually encloses a thin inner
tube, which however, is always put on or removed with ease once the tyre
cover is disposed of. This disposal has hitherto presented much difficulty and
caused damage to the cycle, as well as undue loss of time, so far as many cyclists
are concerned. The operations of removing and replacing the tyre cover are
performed with rapidity and ease by this invention, and injury to the wheel rim
and cover is avoided.
By my construction a movable rod is used, which is, at or near one (herein
called the lower) end, adapted to be attached or pivoted to, or on, the axle of
the wheel the tyre cover of which is to be removed or put on. At the other
(herein called the upper) end of the said rod, is a projection consisting of any
suitably bent or hooked plate or arm, which is used for the purpose of removing
the cover.
On that side of the said rod which is opposite to the said bent plate;
there is a projection which serves as the axle of a wheel which has circumferen
tially a flange or a groove, and which is used for the purpose of putting the tyre
cover upon the cycle wheel rim. The distance between the said bent plate (and
flanged wheel) and the said lower end of the rod is adjustable, and this is
preferably accomplished by attaching said bent plate (and wheel) to a sleevé
fitting on and movable along the said rod. A clamp is also used, to temporarily
hold the tyre cover to the rim for the purpose hereafter described. The appliance
may be made of brass, or any other strong material whilst parts improved by:
being covered with rubber, or with a smooth substance like celluloid, may be
so covered. The appliance is ordinarily constructed in combination with the
barrel of a tyre inflator, of the ordinary tubular description, the barrel, if
weak, being strengthened as for example by adding a piece of tubing over each
end, to carry the parts above described. The combination with an inflator
renders the appliance far more useful and desirable than it would otherwise be.
In the accompanying drawings Fig. 1 shows an edge view of a cycle wheel, with
my appliance (combined with an ordinary inflator) attached. The act of
supporting and guiding the tyre cover into position by means of a grooved wheel
so as to put it on the cycle wheel rim is here illustrated. Fig. 2 shows in
side view part of the cycle wheel with my appliance attached, but in this instance
it is in the position occupied in the act of removing the tyre cover, by means
of the bent or curved plate aforesaid. The clamp is not used when removing
the said tyre cover, but only when replacing it, but it is shown in this view
for convenience of illustration in respect to the description of the said replacing.
Figure 3 shows an edge view of a cycle wheel with my appliance attached, the
position of parts when removing the tyre cover being illustrated. Fig. 4 shows

page_text: a design (edge view) of my appliance without an inflator, the place of which is,
in this instance, occupied by a bar of metal having a movable sleeve which
carries the bent plate and the wheel opposite it before mentioned. Fig. 5 shows
the bar in Fig. 4 in side view. Fig. 6 shows the clamp, which it is useful to
affix to the rim of the cycle wheel, to hold the tyre cover at one part so as to
prevent its slipping out, when being manipulated at another part as aforesaid.
At the back end of this clamp is a lever, which is useful for the purpose of
lifting, clear of the rim, part of the tyre cover edge in the first instance, before
proceeding to insert the bent plate aforesaid, although it is quite feasible to
dispense with this lever and insert the bent plate to begin with. In these
drawings the spindle of a wheel of a cycle is marked, the rim and the tyrė
The arm of my appliance (usually the inflator pump stem) is marked
and is an adjustable sleeve thereon, a cramp, set screw, or any suitable means
being used for temporarily fastening this sleeve firmly, at whatever part of the
arma is found desirable. Projecting from this sleeve is a suitable bent or hooked
plate marked c and opposite to it a grooved wheel d, or it may be a broad
wheel with a flange on one side-the outer-only, of any section which will
hold and guide the tyre cover temporarily during the replacing operation and
release it as herein described.
cover y.
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In order to remove the tyre cover y, it is necessary to slip one end of the
spindle into a hole e, in the lower end of a rod (or of an attachment thereto,
such as a fixed or adjustable sleeve thereon in Figures 1 to 3) or into one of
several such holes, when a number of them are provided to suit cycle wheels of
various diameters. The operator also slips the outer edge of the bent plate c
under any point of the cover y (at which point it has preferably been already
raised). The operator then makes a revolution of the arm a on its centre 2,
as per arrow in Fig. 2 and this action raises and disengages the edge of the
tyre cover from the rim of the wheel. In the drawings the edge of the tyre
cover where exposed (that is clear of the rim a) is marked y'. In order to replace
the tyre cover, the operator first slips the said cover over the rim of the wheel,
tucking it in by hand as far as convenient. The appliance is then adjusted in
position, with the flange (nearest to the said cover) on the edge of wheel d,
beneath the edge of the tyre cover y as in Fig. 1, and the clamp f (the lever
of which is marked g) secured. over the rim of the cycle wheel as in Fig. 2
to prevent the tyre cover slipping. In order that the wheel d may have the
part which goes under the tyre cover projecting inward sufficiently to so guide
the tyre cover edge as to release the latter so that it shall fall within the rim y,
the said wheel & has its axle set obliquely to the rod as shown. The
arm is then revolved on its centre, and the successive points of the tyre cover
will be found, as they are released by wheel d, to fall just above or into their
places within the rim. Then as the edge of the tyre cover drops on or inside
the rim, it may be, if desirable further depressed or tucked in by hand pressure,
by the operator, who can use for the purpose the thumb of the hand with which
he is (at the same time) revolving the appliance. A convenient part of the
rod for the hand grasp is marked it being situated slightly more distant
from the eye or eyes e than the attachment b. The inner tube of the tyre is best
partially inflated during the replacing of the tyre cover.
This invention need not make the inflator unwieldy, as the parts added to it
might be removable, so as to go into the cyclist's tool-bag. The eye need not be
a close fit on the spindle or the like. Various modifications of other details
might be made in this invention without departing from its scope.
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. In an appliance for manipulating pneumatic tyres of wheels, the combina-
1

page_text: attachment or part adapted to be attached, or pivoted to or on the axle of the
wheel, and (at an adjustable distance therefrom on the said stem or rod) a sleeve
or attachment having a projection consisting of any suitable bent or hooked
plate for the removal of the external tyre or cover substantially as and for the
purpose set forth.
2. In an appliance for manipulating pneumatic tyres of wheels, the com-
bination with (and near one end of) the stem of an inflator, or other rod, of an
attachment or part adapted to be attached or pivoted to or on the axle of the
wheel, and (at an adjustable distance therefrom on the said stem or rod) a
sleeve or attachment having a flanged or grooved wheel for the replacing of the
external tyre or cover substantially as and for the purpose set forth.
3. In an appliance for manipulating pneumatic tyres of wheels, the com-
bination with (and near one end of) the stem of an inflator, or other rod, of an
attachment or part adapted to be attached or pivoted to or on the axle of the
wheel, and (at an adjustable distance therefrom on the said stem or rod) a
sleeve or attachment having on one side a projection consisting of any suitably
bent or hooked plate, and on the side opposite said projection, a flanged or grooved
wheel, all as and for the purpose set forth.
4. The combination with a rod or inflator stem a, of the adjustable sleeve or
attachment b, having the plate or arm con one side, and the obliquely set axle d
with grooved wheel d on the other side substantially as and for the purpose
set forth.
5. The combination with a rod or inflator stem «, of an attachment a having
an eye or eyes c (adapted to fit over the spindle of a wheel) and a sleeve or
attachment 6 having the plate c at one side and the grooved wheel d at the other,
the distance of the sleeve or attachment from the eye or eyes e being adjust-
able, the said rod or stem having also a part or end a² (to be grasped by the
operator) more distant from the eye or eyes e than the said attachment b, so
as to enable an external tyre or cover to be removed and replaced substantially
as set forth.
Tatal thi. 1960
HERBERT HADDAN & Co.,
Agents to Applicant, 18, Buckingham Street, Strand, W.C.