Improvements in or relating to Oil Furnaces.
Year: 1893

page_text: Date of Application, 23rd Nov., 1893
Complete Specification Left, 22nd Aug., 1894-Accepted, 13th Oct., 1894
PROVISIONAL SPECIFICATION.
Improvements in or relating to Oil Furnaces.
I, FREDERICK TYERS of 247 Mansfield Road, Carrington in the Borough of
Nottingham, Plumber do hereby declare the nature of this invention to be as
follows:-
:-
This invention relates to improvements in oil furnaces such as described in the
Specification of Letters Patent No. 16036 of November 6th 1888. In carrying out
this invention the lower end of the pump for compressing air above the oil in the
reservoir, is provided with two valve chambers one of which is in communication
with the barrel of the pump and contains a check valve of ordinary construction.
The second chamber is provided with a screw down valve and on one side of this
valve the chamber is in communication with the check valve chamber and on the
other is in communication with the interior of the oil vessel the latter being carried
or extended above the level of the oil by means of a tube.
With this arrangement the air on its way from the check valve to the oil
reservoir is intercepted by the screw down valve and when sufficient pressure is
obtained in the reservoir the screw down valve may be closed so as to take the
pressure off the check valve and effectually prevent leakage. The screw down
valve is operated by a spindle of ordinary construction the outer end of which passes
through a stuffing box in the end of the chamber.
The pipe which conveys the oil to the vapourizing coil is provided with a
combined supply cock and drain cock the latter to drain the pipe above the supply
cock and the coil, when the supply is cut off in order to prevent the stove from
making smoke as the coil cools, which occurs if any residue is left in it.
The combined supply and drain cock is formed by a casing provided with a
seat, a screw down valve, and passage forming a supply cock of ordinary
construction, and in addition is provided at the side with a second independent
seat and screw down valve operated by an independent spindle which together
form a drain cock. The drain cock like the supply cock is in communication with
the upper end of the casing to which the upper part of the supply pipe is connected
and is also provided with an opening communicating with the atmosphere so that
when the cock is opened the contents of the supply pipe and coil will pass out
through the opening and may be caught in a vessel to which the opening may be
connected by a drain pipe. If preferred the supply cock and drain cock may be
made independent of each other.
In order that the pump may be employed for testing water, gas, or other fittings
on the upper part of the reservoir is a cock provided with a union to which one
end of a preferably flexible tube may be connected the other end of the tube
being connected to the fittings to be tested and air compressed in them by means
of the pump; a pressure gauge on the reservoir, flexible tube, or fittings will
indicate any leakage by the fall of the pressure if left for a short time.
The grating above the coil for carrying a pan or vessel is formed with a
removable centre the cowl enclosing the pan is also made removable so that it may
be replaced by a cowl made in the form of a cone with the apex cut off.
Through the opening at the upper end of this cowl is inserted a cylindrical
casing provided with a flange to rest on the cowl and hold it in position the
lower end of the casing extends down through the centre of the grating to the
upper surface of the coil and is preferably lined with asbestos or other fireproof
material.

page_text: With this arrangement a long and fierce flame may he obtained which may be
employed for heating vessels or articles that cannot be placed in the furnace, and
for brazing or like purposes.
Dated this 23rd day of November 1893.
W. P. THOMPSON & BOULT,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in or relating to Oil Furnaces.
1, FREDERICK TYERS of 247 Mansfield Road, Carrington, in the Borough of
Nottingham, Plumber, 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 improvements in oil furnaces such as described in the
Specification of Letters Patent No. 16036 of November 6th 1888 in which the
oil is forced from the reservoir by compressed air into a coil where it is vapourized
and delivered from a jet under pressure in the stove and consumed.
It will be best understood by reference to the accompanying drawings in
which :-
:-
Figure 1 is an elevation partly in section of a stove constructed according to
my invention.
Figure 2 is a vertical section of the upper part of the stove showing alternative
arrangement.
Figure 3 is a vertical cross section of the reservoir showing air pump partly
in section.
Figure 4 is a cross section of the end of the pump on line X X.
Figure 5 is a plan of the supply cock and
Figures 6 and 7 are vertical sections of the casing taken respectively on
lines Y Y and Z Z.
Like letters indicate like parts throughout the drawings.
Figures 3 and 4 are drawn to a larger scale than Figures 1 and 2, and
Figures 5-6 and 7 are drawn full size.
In carrying out this invention the lower end of the pump A (see Figure 3) for
compressing air above the oil in the reservoir B is provided with two valve
chambers A A² the former of which is in communication with the barrel of. the
pump and is fitted with a check valve A³ of ordinary construction to prevent the
return of air to the pump barrel. The second chamber A2 is provided with a
screw-down valve C and seat C¹ and on one side of this valve C the chamber is,
by means of a passage C² put in communication with the chamber A¹ and on the
other side by means of a passage C³ through the seat C¹ and tube C' is put in
communication with the interior of the reservoir B.
With this arrangement the air on its way from the check valve chamber A¹ to
the oil reservoir B may be intercepted by the screw down valve C and when
sufficient pressure is obtained in the reservoir the screw-down valve may be
closed so as to take the pressure off the check valve and effectually prevent
leakage.
The screw down valve is operated by a spindle D passing through a nut and
stuffing box in the end of the chamber A².
The supply pipe E which conveys the oil from the reservoir B to the vapourizing
coil F is provided with a combined supply cock and drain cock G the latter to
drain the pipe E above the supply cock, and coil, when the supply is cut off, in
order to prevent the stove from making smoke as the coil cools, which occurs if
any residue is left in it.

page_text: The combined supply cock and drain cock is formed by a casing G (see
Figures 5-6 and 7) provided with a seat G¹ (see Figure 6), a screw down G and
passages G³, G forming a cock of ordinary construction and in addition is provided
at the side with a second seat H (see Figure 7) and screw down valve H' operated
by an independent spindle H³. The seat H of the drain cock is, by means of a
passage H³, in communication with the upper end of the casing G to which the
upper part of the supply pipe is connected and an opening H is also formed in the
casing communicating with the atmosphere so that when the cock is opened
the contents of the supply pipe will pass out through the opening H and may be
caught in a vessel to which the opening may be connected by a drain pipe. If
preferred the supply cock and drain cock may be formed by independent casings.
The coil F is preferably provided in the centre with a sleeve F with an interior
diameter of such a size as to partially check the pressure of the vapour coming
from the jet and prevent it from extinguishing itself when the upper part of the
stove is open.
In order that the pump A may be employed for testing water, gas, or other
fittings, on the upper part of the reservoir B is a cock J provided with a union or
other suitable arrangement to which one end of a preferably flexible tube may be
connected the other end of the tube being connected to the fittings to be tested and
air compressed in them by means of the pump; a pressure gauge on the reservoir,
connecting tube, or the fittings, will indicate by the fall of the pressure any leakage
if left for a short time.
The framing K above the coil F (see Figures 1 and 2) for carrying a metal pan
or vessel is formed with a removable grating K in order that a cylindrical casing L
(see Figure 2) preferably lined with asbestos L' may be placed centrally above the
coil. This casing is provided with a flange L' to rest on the framing K by means
of which it is held in position with its lower end immediately above the coil F.
The cowl M may also be removed and a conical shaped cowl M' shown in Figure 2
substituted.
With this arrangement a long and fierce flame may be obtained which may be
employed for heating vessels or articles that cannot be placed in the furnace and
for brazing or like
purposes.
In some cases the upper part of the stove may be formed independently of the
reservoir and the former connected to the latter by a flexible supply pipe in
order that it may be used in positions which would be inaccessible with the stove
altogether.
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. In a furnace such as described the combination with a pump A and check
valve A³ of a screw down valve such as C between the check valve and the
delivery into the reservoir B substantially as described and illustrated in the
accompanying drawings.
2. In a furnace such as described the combination with a pump A of chambers
such as A¹ A connected by a passage C and containing a check valve A³ and screw
down valve C respectively substantially as described and illustrated in the
accompanying drawings.
3. In a furnace such as described the combination with a supply cock such as G
of a seat H valve H' passage H3 and opening H forming a drain cock substantially
as described and illustrated in the accompanying drawings.
4. In a furnace such as described the combination with a vapourizing coil such
as F of a central sleeve such as F¹ substantially as and for the purpose described
and illustrated in the accompanying drawings.
5. In a furnace such as described the combination with a pump A reservoir B
and valve such as C of a cock, such as J substantially as and for the purpose
described and illustrated in the accompanying drawings.

page_text: 6. In a furnace such as described the combination with a coil F and framing
such as K of a grating K' which is removable in order to admit the casing L
substantially as described and illustrated in the accompanying drawings.
7. In a furnace such as described the combination with a vapourizing coil F of
a casing such as L substantially as described and illustrated in Figure 2 of the
accompanying drawings.
8. In a furnace such as described the combination with a coil F and framing K
of a casing such as L provided with a flange L' fitting on the framing K
substantially as described and illustrated in Figure 2 of the accompanying
drawings.
9. The combination and arrangement of parts constituting the complete
furnace substantially as herein described and illustrated in the accompanying
drawings.
Dad thin at dawnt
1004
FREDERICK TYERS.
W. P. Thompson & Boult,
Agents for the Applicant.