Improvements in Toy Boats.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improvements in Toy Boats.
I, JOSIAH THOMAS CRAWLEY, of Honolulu, Hawaiian Islands, Chemist, do hereby
declare the nature of this invention to be as follows:
The improved toy boat is provided with a completely closed hull, a keel, and
a rudder, and from the hull leads a small pipe in a rearward direction in align-
ment with the keel, the pipe being preferably located between the end of the
keel and the gearing of the rudder. The top of the hull is provided with a filling
opening normally closed by a plug and directly below the said filling opening
is arranged a transverse shelf adapted to sustain substances for generating gas
in the hull of the boat.
The device is used as follows:-The plug of the filling opening is removed
and the interior of the hull is partly filled with water or other suitable fluid
and gas generating substances are placed on the shelf and the plug is screwed
into the filling opening to close the hull. The gas generated from the substances
on the shelf now presses upon the liquid contained in the hull so that this liquid
is forced out in a very fine stream and in a rearward direction through the pipe
before mentioned, into the water in which the boat is floating, and as the stream
leaving the pipe strikes the water it propels the boat forward in a direction in
accordance with the position of the rudder.
From the foregoing it will be seen that the boat is propelled without any
special machinery and in a very simple manner, it being understood that the
boat may be run for quite a long time, according to the amount of gas generated
in the hull and the size of the minute outlet pipe through which passes the
liquid forced out of the hull by the pressure of the gas.
I do not limit myself to any special substance used for generating the gas
but it is evident that sodium carbonate or similar substances may be employed
and placed on the shelf, and an acid or an acid salt, such as bisulphate of soda,
is then added to the substance, to generate gas in the hull for the purpose above
mentioned.
I, JOSIAH THOMAS CRAWLEY, Chemist, of Honolulu, Hawaiian Islands, do hereby
5 declare the nature of my invention, and in what manner the same is to be per-
Price Sd1

page_text: formed, to be particularly described and ascertained in and by the following
statement; —
The object of the invention is to provide a new and improved toy boat, which
is simple and durable in construction, and designed to be propelled in a very
simple manner, without the use of special machinery.
The invention consists of novel features and parts, and combinations of the
same, as will be fully described hereinafter and then pointed out in the claims.
Reference is to be had to the accompanying drawings forming a part of this
specification, in which similar characters of reference indicate corresponding
parts in both the figures.
Figure 1 is a side elevation of the improvement with parts in section; and
Figure 2 is a plan view of the same.
The improved toy boat is provided with a completely closed hull A, a keel B
and a rudder C, of any approved construction; and from the hull A leads a
small pipe D in a rearward direction in alignment with the keel B, the pipe
being preferably located between the end of the keel and the gearing for the
rudder, as is plainly indicated in the drawings. The top of the hull A is pro-
vided with a filling opening, normally closed by a plug E, and directly below
the said filling opening is arranged a transverse shelf F, adapted to sustain
substances for generating gas in the hull of the boat.
The device is used as follows;
The plug E of the filling opening is removed and then the interior of the hull
is partly filled with water or other suitable fluid, as indicated in Figure 1, and
gas generating substances are placed on the shelf F and the plug E is screwed
into the filling opening, to close the hull. The gas generated from the sub-
stances on the shelf now presses upon the liquid contained in the hull, so
that this liquid is forced out in a very fine stream and in a rearward direction
through the pipe before mentioned into the water in which the boat is floating
and as the stream leaving the pipe D strikes the water, it propels the boat forward
in a direction in accordance with the position of the rudder C.
From the foregoing, it will be seen that the boat is propelled without any
special machinery and in a very simple manner, it being understood that the
boat may be run for quite a long time, according to the amount of gas generated
in the hull and the size of the minute outlet pipe D through which passes the
liquid forced out of the hull by the pressure of the gas.
I do not limit myself to any special substance used for generating the gas,
but it is evident that sodium carbonate or similar substances may be employed
and placed on the shelf F; and an acid or an acid salt, such as bisulphate of
soda, then added to the substance to generate gas in the hull, for the purpose
above mentioned.
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
1. The herein described method for propelling a boat, consisting in partly
filling the boat with a liquid and then generating a gas in the compartment
containing the liquid, to force the latter through a minute outlet in a rear-
ward direction into the water in which the vessel is floating, substantially as
shown and described.
2. As a new article of manufacture, a toy boat having a closed hull adapted
to receive a liquid and gas producing substance, and a minute discharge pipe
leading from the bottom of the hull in a rearward direction, substantially as
shown and described.
3. As a new article of manufacture, a toy boat consisting of a closed hull
adapted to be partly filled with water, a minute discharge pipe leading from the
bottom of the hull in a rearward direction in alignment with the keel of the boat;

page_text: a shelf within the hull, and adapted to sustain chemicals, and a filling opening
on said hull and normally closed by a screw cap, substantially as shown and
described.
Dated this 17th day of Octalion 1900
A. M. & WM. CLARK,
Chartered Patent Agents, 53, Chancery Lane, London.