Improvements in Furnaces and Appliances for Heating Tyres.
Year: 1894

page_text: Date of Application, 7th Nov., 1894
Complete Specification Left, 6th Aug., 1895-Accepted, 28th Sept., 1895
PROVISIONAL SPECIFICATION.
Improvements in Furnaces and Appliances for Heating Tyres.
We, HERBERT HALL MULLINER, Coach-builder, of 300 Broad Street, in the
City of Birmingham, and HERBERT AUSTIN, Engineer, of 58 Broad Street,
Birmingham aforesaid do hereby declare the nature of this invention to be as
follows:-
This invention has reference to the manner in which we construct and arrange
furnaces and appliances for heating tyres and wheels. The object of the invention
being to provide a rapid and economical method of heating tyres by gas or the
like flame, to be directed automatically round the entire circumference of the tyre
when it is placed upon or within our store.
In carrying our invention into effect when constructing a furnace for heating
tyres to be shrunk on to an ordinary vehicle wheel, we arrange a base or central
platform forming the bottom side of our muffle or furnace, lining it with fire brick
and encasing it with the same non-conducting and fire resisting material or other
like material; and from the centre of this muffle base we pass a pipe or hollow
axle, which serves as our gas conducting pipe to supply our branch arms or other
nozzle pipes which we attach to the upper portion of this axle.
Below the muffle base we arrange a bracket or a suitable frame to carry gearing
for giving motion to our hollow axle, the shaft or spindle for driving the axle,
and its connected burners being carried to the outside preferably of our muffle
casing and there driven by suitable chain, belt or other ordinary gearing from a
hand shaft or from a motive power shaft connected or geared up to it in any
ordinary manner. We mount our driving gear for giving motion to the axle to
work in connection with a blower or fan for impelling or forcing air as through
pipe or series of pipes to supply the necessary air which is to mingle with the
gas within our nozzle burner pipes, so that a Bunsen flame may be produced
with a strong draught impelling the flame outwards; we cause the same shaft
which gives the high speed motion to the blower to give the desired revolving
motion to the burner axle, so that the air is forced through the burners while
they are revolving. We mount our hollow axle in a suitable stuffing box, arranged
in any ordinary manner beneath our burners base, so that the gas may pass from a
common chamber beneath the axle without escaping, and so that the air may also
pass without a leakage.
When arranging our air and gas pipes to enter into the one common bottom
chamber which feeds the hollow axle, we provide one stuffing box only for the
axle, but when employing a current of air which shall mix elsewhere with the
gas than at the bottom of the axle, we may employ two stuffing boxes instead.
In order to permit of varying sizes of tyres being operated upon in our furnace
muffle, we make separate arm pieces with varying lengths of arm to suit the
varying diameters of the tyres, or we arrange telescopic joint pieces upon the arms
or pipes so that they may be extended or collapsed to suit the altered sizes of the
tyre. We place a cover or cap over the whole of our furnace muffle, so as to
enclose the tyre and we provide, when so desired, exhaust chimney piece or other
exit passages to permit of the fumes to escape; the cover can be raised or lowered
by chains or other ordinary devices.

page_text: We sometimes arrange a set of burners on the outside of our tyre rim as well
as upon the inside or instead of the inside to suit the thickness or other con-
ditions required for the tyre. We may cause the tyre itself to revolve while the
burners remain stationary, the force draught being employed to drive out the
Bunsen flame from the burners which are fixed on to the tyre which is revolving.
We do not limit the application of our invention to any particular form of
tyre rim or to any particular form of blower, shape of furnace or arrangement
of gearing, but we modify the shape and arrangement of the furnace and the
method of imparting the motion to the burners or to the tyre, as well as employ-
ment in any well known form of fan or blower to suit any particular requirement
that may be desired.
Dated this 5th day of November 1894.
MARKS & CLERK,
18 Southampton Buildings, London, W.C., and
13 Temple Street, Birmingham, Agents for the Applicants.
Improvements in Furnaces and Appliances for Heating Tyres.
We, HERBERT HALL. MULLINER, of 300, Broad Street, Coach-builder, and
HERBERT AUSTIN, of 58, Broad Street, Engineer, both in the City of Birmingham,
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 has reference to the manner in which we construct and arrange
furnaces and appliances for heating tyres and wheels. Our object being to provide
a rapid and economical method of heating tyres by gas or the like flame, to be
directed automatically round the entire circumference of the tyre when it is placed
upon or within our stove.
In the accompanying sheet of explanatory drawings to be hereinafter
referred to―
Figure 1 is a plan of our improved furnace with the top cover removed.
Figure 2 is a sectional elevation of the furnace.
The same reference letters in the different views indicate the same parts.
In carrying our invention into effect when constructing a furnace for heating
tyres to be shrunk on to an ordinary vehicle wheel, we arrange a base or central
platform A, to form the bottom of our muffle or furnace, sometimes lining it with
fire brick and encasing it with the same non-conducting and fire-resisting or other
like material. From the centre of this muffle base we pass a pipe or hollow
axle B, which serves as our gas conducting pipe to supply our branch arms or other
nozzle pipes or burners C, which we attach to the upper and enlarged portion B' of
the axle B. The outer ends of the pipes or burners C are preferably flattened
in order to produce a wide thin flame, thus distributing its effect over a considerable
area.
Below the muffle base we arrange a suitable frame or brackets to carry gearing
for giving motion to our hollow axle B; the shaft or spindle D for driving the
axle and its connected burners, being carried to the outside or clear of our muffle
casing, and there driven by suitable chain, belt, or other ordinary gearing, from a
hand shaft or from a motive power shaft connected or geared up to it in any
ordinary manner. We sometimes mount our driving gear for giving motion to the
shaft D, to work in connection with a blower or fan for impelling or forcing air
through a pipe, such as E, to supply the necessary air which is to mingle with the
gas within our nozzle burner pipes, so that a Bunsen flame may be produced with
a strong draught impelling the flame outwards. With this arrangement we

page_text: preferably cause the same shaft which gives the high speed motion to the blower.
to give the desired revolving motion to the shaft D, and the air is thus forced
through the burners while they are revolving.
We mount our hollow axle in a suitable stand such as F, arranged in any
ordinary manner beneath our burners base so that the gaseous mixture may pass
from a common chamber G beneath the axle without escaping, and so that the air
may also pass without a leakage.
"
We preferably arrange our air pipe E, and gas pipe H, to enter into the one
common bottom or mixing chamber G, which feeds the distributing chamber B' of
the hollow axle B, the branch pipes C being connected with the distributing
chamber through stuffing boxes or in any other suitable manner.
In order to permit of varying sizes of tyres being operated upon in our furnace
muffle we make separate arm pieces with varying lengths of arms to suit the
varying diameters of the tyres, or we arrange telescopic joint piece upon the arms
or pipes, so that they may be extended or collapsed to suit the altered sizes of the
tyre. We place a cover or cap J over the whole of our furnace muffle, so as to
enclose the tyre, and we provide when so desired, exhaust chimney piece or other
exit passages to permit of the fumes to escape; the cover can be raised or lowered
by chains attached to the hook bolts K, or by other ordinary devices. We provide
an apperture in the cover with a suitable door or shutter L, for the purpose of
inspection, and to enable the burners to be readily lighted when starting the
furnace.
On the interior of the muffle base we attach half round or other bars or
projecting pieces, such as M, for the purpose of permitting the gas flame to play
freely under the tyre to be heated, and for convenience in the handling of the tyre
on its insertion and withdrawal from the muffle.
We do not limit the application of our invention to any particular form of tyre
rim or to any particular form of blower, shape of furnace, or arrangement of
gearing, but we modify the shape and arrangement of the furnace, and the method
of imparting the motion to the burners, and employ any well-known form of fan or
blower to suit any particular requirement that may be desired.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is.-
1. The improved method of heating tyres and wheels by means of revolving
burners within a muffle or furnace, substantially as herein described.
2. In muffles or furnaces for heating tyres, the use of a hollow central axle with
radiating pipes or burners, substantially as and for the purposes hereinbefore
described, and as illustrated in the accompanying drawings.
3. In muffles or furnaces for heating tyres, the combination of a hollow central
axle having radiating pipes or burners, with a supporting standard having a chamber
formed therein for the mixing of the gas and air, substantially as hereinbefore
described and as illustrated in the accompanying drawings.
4. The improved furnace for heating tyres, arranged substantially as herein
described.
. גימ
1 1
1005
MARKS & CLERK,
18 Southampton Buildings, London, W.C., and
13 Temple Street, Birmingham, Agents for the Applicants.