Improvements in Wheels for Road Vehicles.
Year: 1895

page_text: PROVISIONAL SPECIFICATION.
Improvements in Wheels for Road Vehicles.
I, PETER FYFE, of 1 Montrose Street, in the City of Glasgow, Sanitary
Inspector, do hereby declare the nature of this invention to be as follows:--
This invention relates to wheels for road vehicles in which a pneumatic hub
composed of a hollow sleeve divided into compartments is applied between the
nave and the axle bush of the wheel for minimising or preventing transmission of
vibration from the wheel nave to the axle and thence to the body of the vehicle.
Under the present improvements I make provision for simultaneously instead of
separately inflating the several chambers or compartments into which the pneumatic
sleeve or cushioning of the hub is divided by forming an air passage around one
end of the sleeve with connecting branches to each compartment so that in the
operation of the air pump all the chambers are inflated together at an equal
pressure. At any point between each chamber pressure is applied to close off
the connection between the chambers, by means of a ring plate attached to the
nave and screw bolts or pins bearing on the end of the sleeve so that after inflation
the chambers are again rendered independent one of the other.
The axle bush may be formed with a screw thread at either end upon which is
fitted a nut serving as or having a flange to bear on the end of the cushioning and
nave, but by preference the nut is screwed on at the inner end where it is not
exposed and liable to be loosened or broken, an enclosing flange being cast on to
the outer end of the bush.
Under a modification in lieu of the pneumatic sleeve divided into compartments
I employ a number of close ended tubes of rubber or like material placed between
the axle bush and the wooden pave of the wheel, the said tubes which may be of
any desired cross section resting in longitudinal grooves both in the bush and nave.
The tubes are connected together at their ends by rings or diaphragms of rubber or
like material, and at one end an air passage is formed in the ring or diaphragm
through which the whole of the tubes are simultaneously and equally inflated. The
tubes are subsequently disconnected by means of ring plates and locking bolts or
pins or like devices fitted to press on the ring opposite the air passage which is
thus closed between each tube.
In a further modification the air cushion is made in the form of a tube or tubes
of rubber or like material wound helically in single or double thread around the
axle bush between it and the nave in grooves formed in both for its reception, the
direction of winding being preferably such that the forward action of the wheel
tends to tighten the tubular sleeve on the axle bush and so drive the latter round
on the axle. To assist this tightening action lugs or flanges may be formed on
both ends of the rubber tubes, one end of which is secured to the nave and the
other end to the axle bush.
Dated this 1st day of May 1895.
WALLACE FAIRWEATHER,
Chartered Patent Agent,
2 Saint Vincent Street, Glasgow, Agent for the Applicant.

page_text: Կ ԵԱՆԵՄ,
I, PETER FYFE, of 1 Montrose Street, in the City of Glasgow, Engineer, 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 relates to wheels for road vehicles in which a pneumatic hub
composed of a hollow sleeve divided into compartments is applied between the
nave and the axle bush of the wheel for minimising or preventing transmission of
vibration from the wheel nave to the axle and thence to the body of the vehicle.
Under the present improvements I make provision for simultaneously instead
of separately inflating the several chambers or compartments into which the
pneumatic sleeve or cushioning of the hub is divided by forming an air passage
around one end of the sleeve with connecting branches to each compartment so
that in the operation of the air pump all the chambers are inflated together at an
equal pressure, and at any point between each chamber pressure is applied to close
off the connection between the chambers.
The invention is illustrated by the accompanying drawings, Fig. 1 being a
vertical section of a wheel nave, Fig. 2 a transverse vertical section of the same,
Fig. 3 a transverse vertical section of a modification, and Figs. 4 and 5 similar
views to Figs. 1 and 2 of a further modification of the nave.
The axle bush A may be formed with a screw thread and supplied with a
flanged nut or boss at either end as shewn in drawings, the nut or flanged boss E
being fitted on to outer end of bush having the large bearing on the end of the
nave D. The nut B is then screwed on us at Figs. 1 and 4, enclosing the flangel
nut or boss E and if desired securing it in its position.
Under the m difications shown by Figs. 1, 2 and 3 1 employ a number of
close ended tulis F of rubber or like material placed between the axle bush
A and the wooden nave of the wheel, the said tubes F which may be of any
desired cross section may or may not rest in longitudinal grooves a, d, buth
in the and naye. That or cushions may be comerted together t
their ends by rings or diaphragms of rubber or like material, at one om u
air passage is formed in the ring or diaphragm through which the whole at the
tube are simultaneously and equally inflated or the tube- P may as shown be
connected together by an air tube at one end which also admits of simultaneously
inflating the tubes. The tubes or cushion. Fara cubsequently disconnerted by
means of ring plates secured to the nave al locking bolts or pin or itke devi
fitted to press on the air tube at points between the air inlet pamages to the
tubes F which are thus closed between each tube as described in the Specification
of my Patent No. 25185 of 1894, or as is preferred by wiring the air tube G
between each cushion tube F in the modification shewn at Fig. 2 and between
every pair in the modification shewn at Fig. 3 in the manner also described in my
Specification above mentioned.
In a further modification illustrated by Figs. 4 and 5 the air cushion C is made
in the form of a tube or tubes of rubber or like material wound helically in
single or double thread around the axle bush A between it and the nave D in
groove u, d, formed in both for its reception, the direction of winding being
preferably rch that the forward action of the wheel tends to tighten the tubular
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the axle bush A end to drive the latter
retion lugs or flunges if my la formal
of which is sure to the Dand th
Full inflation of this tube. or V
on the axle bush A.
! on the ande. To assist
bth ends of the rabber
other end to the ge
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page_text: to its being wound into place, a nozzle and valve being provided for attachment of
the inflator.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is: --
1. A wheel nave for road vehicles the parts of which are constructed and com-
bined substantially as described under several modifications with reference to the
accompanying drawings.
2. In a wheel for road vehicles an elastic or resilient hub composed of a number
of close ended rubber tubes placed between the axle bush and the nave the
said tubes being adapted to be simultaneously inflated and subsequently dis-
connected so as to be independently maintained under inflation substantially as
described.
3. In a wheel for road vehicles an elastic or resilient hub composed of an inflated
rubber tube or tubes wound helically between the axle bush and the nave
substantially as described.
Dated this 29th day of February 1896
WALLACE FAIRWEATHER,
Chartered Patent Agent,
62 Saint Vincent Street, Glasgow, Agent for the Applicant.