Improvements in Pneumatic Wheels for Cycles, Perambulators, Ambulances, Bath Chairs, and other Light Vehicles.
Year: 1891

page_text: Date of Application, 5th Nov., 1891-Accepted. 5th Dec., 1891
COMPLETE SPECIFICATION.
Improvements in Pneumatic Wheels for Cycles, Perambulators,
Ambulances, Bath Chairs, and other Light Vehicles.
ALFRED EVES of 48 Duckett Road Harringay London, N. Gentleman, and
JOHN THOMAS O'CALLAGHAN of 1 Dorset Villas, Seven Sisters Road London, N.
Millers Traveller, 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 improvements claimed lies in the construction of a flanged or rimmed wheel
having the flanges or rims at equal distances slotted or punctured with oblong holes
near the edges of both flanges or rims, the slots and the screws, pins or bolts, may
be protected from grit and other substances by a circular thin steel or guard of
other material, screwed or secured to the rim of the wheel. Within the flanges or
rims we insert a pneumatic tube made of materials suitable for that purpose,
and secured to the rim by adhesion or otherwise. This pneumatic tube we inflate
through a tube made in metal, secured to the inside of the pneumatic tube and
passed through the rims of the wheel. Such small tube will be bent in the form of
a syphon or any other shape suitable to the purpose, and the end thereof will taper
smaller to allow a substance of circular form to fall upon a punctured cushion or
ring or cone shaped piece of india rubber or any other suitable material, so that the
pressure of the confined air, will keep it in its place as a stopper, which stopper in
course of the tube being inflated will be forced back against four or more stops
placed on the inside of the tube and above the cone or cushioned seat of the stopper
so as to allow air to pass as may be requisite to inflate the pneumatic tube, next to
the pneumatic tube we place a solid or cushioned tyre of india-rubber or any other
material suitable to the purpose, made straight at the sides with either a flat or
concave surface resting on the pneumatic tube; this tyre we perforate across at
various distances with a small hollow tube of metal or other suitable substance and
on each side of this tube we place a small metal washer. Inside of this small cross
tube we may have a screw thread and a corresponding screw to fit therein from the
outside of the rims, or in place of such screws, a linch pin, or a headed bolt and nut
right through such small cross tube so that the tyre is held within the rims of the
wheel and allowed to play up or down the slots therein.
The above described wheels may be made plain beaded, or fluted, and are
applicable to the various, cycles and light wheels of all descriptions now in use.
Where intended to apply to larger vehicles such as ordinary cab and carriage
wheels, ambulances, bath chairs, we provide two flat rims or wheels of flanged
metal of a larger diameter than the wheel applied to, such rims we slot where
deemed necessary and the same, bolted or otherwise secured on the wheel and
secure the pneumatic tube and the tyre thereto upon the same principle as set forth
herein.
And in order that our invention may be carried into effect we describe the
accompanying sheet of drawings reference being made to the figures and letters
marked thereon.
Fig. 1. shows a wheel side view, marking the approximate position of the slots
or oblong cuts marked A in the rims thereof as well as the position of the inflating
tube marked B connected with the pneumatic tube and the solid tyre marked C.
projecting beyond the rim of the wheel.
Fig. 2. shows section of the rim of the wheel wherein is first placed the pneumatic
tube marked D. and then the solid tyre marked E. with the small hollow tube
marked F. crossing, and its washers marked G. on each side thereof, and the head
of the pin bolts, nuts or screws used marked H. and the guards to protect the slots

page_text: and heads of bolts marked I. outside the rim of the wheel, to show how the tyre is
secured to the wheel.
Fig. 3. shows section of inflating tube which we.insert in pneumatic tube and its
rubber cone shaped cushion marked J, and stops marked K. and ball stopper
marked L.
Fig. 4. shows section of rim of wheel slotted, which can be bolted or otherwise
screwed and secured to ordinary wheels, making those wheels to work upon the
same principle as set forth in Fig. 1.
Having now particularly described and ascertained the nature of our said inven-
tion and improvements and in what manner the same is to be performed we declare
that what we claim is
An invention and improvement of a wheel with slotted openings on sides thereof
and of such dimensions, as to the width of the flanges or rims, as will secure, first;
a pneumatic tube and inflating tube and upon that a tyre perforated and secured to
the rims of the said wheel, by screws, bolts, pins, or appliances which allow the
working and free play thereof in such slots as set forth in our drawings herev..th,
and thereby secure a practical immunity from the pneumatic tube being punctured
and have all the advantages of the buoyancy, elasticity, and free play of
ordinary pneumatic tyre and the further advantage of the pneumatic tube and t
being taken out of the rims of the wheels in a few minutes for the purpose of
cleaning and repairs.
Dated this 5th day of November 1891.
"
3
JOHN THOMAS O'CALLAGHAN.
ALFRED EVES.