Year: 1887

page_text: Date of Application, 22nd Oct, 1887
Complete Specification Left, 18th July, 1888
Complete Specification Accepted, 24th Aug.,
1888
ANDREW SWEET 102 Hampstead Road N.W. Manufacturing Iron-monger do
hereby declare the nature of my said invention to be as follows:-
The object of this invention is to make the heating apparatus such as may be sub-
merged in the water to be heated primarily intended for heating water in a Bath for
bathing purposes, but useful for heating water or other liquids for general purposes.
In my improved heater the water is heated partly by contact with the exterior of
the apparatus and partly by an interior circulating chamber the sinking weight.
necessary to subinerge the heater is placed in the outlet flue where it does not impair
the heating surface, means of simple and safe management of the burner are also
introduced, that is to say the burner can he withdrawn from its acting position in the
heater for lighting, thus preventing the liability of explosion from carelessness.
The sheet of drawings attached with references and explanations thereto will fully
explain the nature and scope of these combined improvements, the drawing being one
quarter the full size of a 12 inch heater.
Fig. 1 and 2 show the heater in vertical section and plan similar letters indicating
corresponding parts.
A is the circulating chamber with the flows and return F F.
B shows the conformation of the combustion chambers B' showing the burner in its
acting position.
Cis the tube or flue to carry off the products of combustion.
D is the tube to admit the circular burner, and the air to support combustion.
E represents the gas inlet end of the burner.
Fas already explained are the outlets and inlets to the circulating chamber.
G. is the handle to facilitate the apparatus being removed from place to place.
H. shows the depth of water into which the heater may he placed in relation to the
tube D.
Fig. 3 and 4 shows the burner in elevation and plan, this burner is made of copper
tube having a large number of small holes striking out laterally.
0-1 1887

page_text: ANDREW SWEET 102 Hampstead Road London N.W. Manufacturing Iron Monger
do hereby declare the nature of my said invention and in what manner the same is
to be performed, to be particularly described and ascertained in and by the following
statement:
The object of this invention is to make the heating apparatus such as may be
submerged in the water to be heated, primarily intended for heating water in a
bath for bathing purposes, but useful for heating water or other liquids for general
purposes.
In my improved heater the water is heated partly by contact with the extended
exterior surface of the apparatus and partly by an interior circulating chamber, and
means of simple & safe management of the burner are also introduced, that is to
say the burner can be withdrawn from its acting position in the heater, for the
purpose of lighting, while the sinking weight is placed in the outlet flue, where it is
not detrimental to the heating surface of the heater.
The sheet of drawings attached with references and explanations thereto, explain
the nature and scope of the combined improvements. The drawing being about one
quarter the full size of a 12" heater, although it is evident the apparatus may be
varied in its conformation otherwise than shown in the drawing.
The drawing is that sent in with the provisional, to which reference is now made.
Fig. 1 and 2 show the heater in verticle section and plan similar letters indicating
corresponding parts.
A shows the circulating chamber with the flow and return tubes F F.
B shows the conformation of the combustion chamber, and burner.
B₁ shows the burner resting in its acting position, being midway between the
circulating chamber and the exterior shell or case this position is important to ensure
the most perfect combustion.
C is the tube or flue to carry off the products of combustion this tube is necessarily
long because it has the double duty to perform viz. to carry off the products of com-
bustion and to draw the air to feed the burner down the tube or space D.
Dis the tube to admit the circular burner and the air to supply combustion.
E represents the gas inlet end of the burner projecting a little above the tube D
to allow of the flexible tube being attached.
Fas already explained are the outlets and inlets to the circulating chamber.
G is the handle to facilitate the apparatus being moved from place to place.
H shows the proper height of the water line, or the depth of water into which
the heater should be submerged when in use.

page_text: Having now particularly described and ascertained the nature of my said
Invention and in what manner the same is to be performed I declare that what I
claim is
1st. The combination of tubes and hollow discs with circulating tubes passing
through the outter case in conjunction with the movable burner.
2nd. The heavy tube or flue giving sinking weight to the apparatus without
reducing area of heating surface.
3rd. A water heater, the water being heated by contact and circulation as specified
and illustrated and for the purposes set forth.
ANDREW SWEET.