Improvements in and connected with Pneumatic Tyres for the Wheels of Vehicles.
Year: 1894

page_text: Date of Application, 25th Oct., 1894
Complete Specification Left. 13th July, 1395-Accepted, 17th Aug., 1895
PROVISIONAL SPECIFICATION.
Improvements in and connected with Pneumatic Tyres for the
Wheels of Vehicles.
I, ALEXANDER SHIELS of 190 Bath Street, Glasgow, M.B., C.M., B.Sc., do
hereby declare the nature of this invention to be as follows.-
-
"
or
This invention relates to pneumatic tyres for buses, cabs and such like vehicles.
In carrying out my invention I use a pneumatic tyre of the "Dunlop'
other known suitable pattern the cover of which is or may be secured to a metal
rim, attached to the felloe of the wheel by means of wires or other suitable
attachments. Fitted at the outside of the tyre in such manner as to enclose it is
a metal shoe of trough shape in cross section. The tread part of this shoe is
thicker than the sides and is preferably curved both inside and outside the inner
curve being preferably quicker than the outer one. One of the sides of the trough
shaped shoe is secured to the tread part by means of screws, bolts, or pins. The
sides or flanges of the shoe slide on guide plates secured to the wheel felloe and
these guide plates are preferably provided with edges or beadings against which
the sides of the shoe can abut in the event of the pneumatic tyre bursting. The
space, at each side, between the shoe and the beadings aforesaid, is or may be
covered over with flaps or pieces of canvass, leather or other suitable material for
the purpose of keeping out dirt.
Sufficient space is preferably left between the sides of the shoe and the rubber
tyre to permit of a free and full expansion of the latter when inflated without
causing it to bear or rub against the said sides.
The shoe can if desired be made in two or more sections.
The metal may be barffed to prevent rusting.
H. D. FITZPATRICK,
70 Wellington Street, Glasgow, Agent.
Improvements in and connected with Pneumatic Tyres for the
Wheels of Vehicles.
1, ALEXANDER SHIELS of 190 Bath Street, Glasgow, M.B., C.M., B.Sc., 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 pneumatic tyres for buses, cabs and such like vehicles.
And in order that my said invention may be properly understood I have hereunto
appended an explanatory sheet of drawings, whereon,
Fig. 1 shows my improved bus tyre in section.
Fig. 2 is a side view of part of the bus wheel.
Figs. 3 and 4 show in section and side view a slight modification.

page_text: 1
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In carrying out my invention' I use a pneumatic rubber tyre d of the "Dunlop
or other well known and suitable pattern the cover of which is, or may be, by
means of wires d' or other known attachments, removably secured to a metal rim /
shrunk on or screwed or otherwise attached to the ordinary wood felloe a of the
wheel. It will be seen that the rim bis recessed for the reception of the wires.
Fitted at the outside of the tyre d, in such manner as to enclose it, is a metal
shoe e of trough shape in cross section and which extends right round the wheel.
The tread part e of this shoe is made thicker than the sides e, e', and is, prefer-
ably, curved both inside and outside the inner curve being, preferably, quicker
than the outer one so as to form a seat for the pneumatic tyre. The inside surface
may however be flat. One side e¹ of the shoe is secured to the tread part et by
means of screws, bolts, or pins e as shown. The tread e is, preferably, made
with the recessed part e for the reception of the side e': so that one solid running
surface is presented by the shoe which would not be the case if the side e', was
merely secured in place with its lower edge flush with the lower surface of the
tread. When the wheel is running the sides e, e', of the shoe, as a consequence
of the resiliency of the tyre d, slide up and dowu on the guide plates c, e', 'secured
round the wheel felloe a. The plates c, c², · are provided with safety edges or
iflanges C against which the sides of the shoe can abut and' bear in the event of
the pneumatic tyre d bursting so that the vehicle can still proceed on its journey.
The space, at each side, between the shoe and the flanges C" can be covered
over with flaps or, pieces of canvas, leather, or other suitable material for the
purpose of keeping out dirt.
By removing the side e¹ the shoe can easily be taken off the wheel.
..Sufficient space is left between the sides of the shoe and also the guide plates c, c',
and the rubber tyre to permit of a free and full expansion of the latter when
inflated without frictional rubbing against either the guide plates or the sides.
The rubber tyre is inflated by means of a valve passed through the wood
felloe a.
If desired the shoe can be constructed as shown at Figs. 3 and 4. In this
case it is made in two or more sections which are cast or turned of a trough shape
as shown at Fig. 3. These sections are fitted over the rubber tyre and then
bolted together so as to form a complete ring by means of the flanges f on the
sections and bolts g.
The metal may be barffed to prevent rusting.
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
consider novel and desire to claim is :-
A combination tyre for vehicles constructed substantially as herein before
described with reference to the drawings annexed.
Dated this 12th day of July 1895.
H. D. FITZPATRICK,
70 Wellington Street, Glasgow, Agent.