Improvements in Blow-lamps.
Year: 1895

page_text: Improvements in Blow-lamps.
I, JOSEPH WILLIAMS, of 135 Hyde Road, West Gorton, Manchester, in the
County of Lancaster, Plumber, do hereby declare the nature of this invention to
be as follows:-
My invention relates to improvements in blow-lamps employed in burning off
paint, soldering, or for other purposes, and the chief object of my invention is to
vapourize the oil and to regulate the size of flame more effectually than can be
done in the blow-lamps now known, and I effect this by the use of a valve to the
outlet of the burner.
In making my improved blow-lamp I employ a reservoir for a mineral oil or
other suitable heating agent and of suitable size and shape, with a handle which
may form part of the pump; to the top of the reservoir is a pipe connected to the
outlet for the oil which is pumped to the outlet, in the first instance, and passes say
along one tube then through a cross tube opposite the outlet of the burner to a
return tube parallel with the first which conducts the oil to the outlet preferably
placed at the rear of the burner and midway between the two tubes; a special
feature of my invention is the use of a screwed spindle with a pointed end arranged
to enter the rear end of the outlet and regulate the size of outlet for the passage
of the vapour and so determine the size of flame produced, or any other form of
valve may be employed for this purpose.
The outlet and the tubes which convey the vapour to it are wholly or partially
surrounded by a chimney.
To start the blow-lamp a small quantity of spirit is placed in a chamber below
the burner and ignited to heat it and the pump is worked either before or after
igniting the spirit, to force the oil upward and as it reaches the heated burner it is
vapourized in its passage through the tubes to the outlet where it burns.
Dated this 22nd day of May 1895.
H. B. BARLOW & GILLETT,
Agents for Applicant.
IH
I, JOSEPH WILLIAMS, of 135 Hyde Road, West Gorton, Manchester, in the
County of Lancaster, 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 :-
My invention relates to improvements in blow-lamps employed in burning off
paint, soldering, or for other purposes, and the chief object of my invention is to
vapourize the oil and to regulate the size of flame more effectually than can be done
in the blow-lamps now known and I effect this by the improved construction of
ID011

page_text: Durber aud by the use and application of a valve to the outlet of the burner
substantially as hereinafter described with reference to the accompanying two
sheets of drawings in which
Fig. 1 is a side sectional elevation of a blow-lamp to which my improvements
are applied, and
Fig. 1 is a section of the burner on the line A B, Fig. 1.
Fig. 2 is an alternative form of my improved blow-lamp, and
Fig. 3 is a modified construction of blow-lamp also made according to my
invention.
In the drawings,-a is the reservoir or body of the lamp to which is shown
connected, in Figs. 1 and 2, a pump barrel b and a boss c to which is secured by a
screwed coupling a burner d through which various passages are made to admit
liquid or vapour from the reservoir a to the outlet e. The outlet e is conical in
form and is fitted with a conical valve f formed on the end of a screwed spindle f¹
fitted in a stuffing box g on the burner d. A small dish is connected to the
burner d between the top of the reservoir and the outlet e which is connected by
the passages in the burner d and a fixed pipe i to the front lower portion of the
reservoir so that all the mineral oil or other suitable heating agent, say, for
example, benzoline, may be utilized. A handle is secured to the pump barrel b
and the reservoir a which has an opening k through which it is filled. The pump
barrel has a cap into which is fitted a hollow piston rod m with a button m² and a
hole (or holes) n in the hollow piston rod m serves to admit air into the piston rod
and pump barrel when the button m¹ is drawn outwards; on the inner end of the
hollow piston rod m is a cup leather or pistou o mounted upon a hollow boss p
secure. to the piston rod m and forming a passage into which is fitted a back
pressure valve
g. To the end of the barrel is secured a boss r to which is also
secured the end of another tubes which contains a valve spindlet and plug t¹ which
is held by a spring over a hole in the boss r. The spindle t is supported by a
boss fitted in a screwed cover v screwed over the opening to the tubes and a small
tube w opens into the tubes and projects about to the top of the reservoir a.
A chimney or cylindrical casing surrounds the burner d.
In Fig. 2 a tubular reservoir a is shown with the pump 6 set parallel with and
near to it; this construction is more convenient for certain work than the lamp
shown in Fig. 1.
In Fig. 3 the pump is dispensed with and the benzoline is stored in a reservoir
placed above and connected to the burner by a pipe a¹. This form of blow-lamp
is particularly suitable for heating the ignition tube of oil and similar motor
engines or for any like purpose where change of position is not required.
On
In operation, where a pump is employed, after filling the reservoir a the piston is
actuated which forces air through the valve g into the tubes to the back of the
plug t from whence it flows to the top of the reservoir and exerts pressure enough
to force the benzoline up the pipe i through the burner d to the outlet e.
opening the valve f some of the benzoline will escape into the chimney x and fall
into the dish and when the dish is nearly full the valve f must be again closed.
The liquid in the dish h is then lighted and allowed to burn itself out or nearly so
when it will have sufficiently vapourized the benzoline in the passages leading to the
outlet e. The valve f is then opened again to allow the vapour to escape through
the outlet e where it is ignited. The burning vapour causes an inrush of air
through the back of the chimney and a very hot flame passes through the front
end of the chimney which flame can be maintained for a long time by occasionally
working the pump.
One of the chief advantages obtained by my improved construction of burner is
that the full heat of the flame is directed on to that part which contains the cross
tube or passage d' whereby the liquid passing from the reservoir becomes com-
pletely vapourized before it reaches the oulet e. A special feature of my burner
is the use of the valve by which the size of orifice for the escape of vapour aud
consequently the size of the flame can be regulated, and further any dirt can be

page_text: removed from the orifice by screwing the point of the valve as far as it will go
through the outlet e.
It is obvious that a greater flame will require more vapour to feed it but the fact
of the flame being larger will mean that a greater heat is being imparted to the
cross tube or passage d' and a more rapid vapourization of the liquid is accordingly
effected.
The operation of the blow-lamp shown in Fig. 2 is similar to that of Fig. 1, but
the burner in this case can be heated by a loose dish or a dish such as h can be
applied to it.
In Fig. 3 the benzoline flows by gravity from the reservoir a to the outlet e,
a dish being shown for heating the burner d.
I wish it to be understood that the improved buruer may be applied to a lamp
without a pump, or with any suitable form of pump other than that shown.
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 blow-lamp, the combination with the improved construction of burner in
which a cross tube or passage within the chimney is exposed to the full heat of the
flame from the burner outlet, of a valve for regulating the size of said outlet and
consequently the size of the flame and for keeping the burner outlet clean and clear
substantially as herein described and as shown.
2. The several combinations and arrangements of parts embodying my improve-
ments in blow-lamps substantially as described and as shown in the accompanying
drawings.
Dated this 13th day of February 1896.
H. B. BARLOW & GILLETT,
17 St. Ann's Square, Manchester, Agents for Applicant.