JET APARATUS FOR FIRE LXTINCTION AND LIKE PURPOSES
Year: 1884

page_text: I FRANCIS BOLTON of N° 4 The Sanctuary Westminster in the county of
Middlesex Kht do hereby declare the nature of my invention for 'JET
APARATUS FOR FIRE LXTINCTION AND LIKE PURPOSES' to be as follows
-
My invention relates to apparatus whereby I can obtain from a low pressure
water main jets of considerable force available for extinction of fire or for other
purposes for which such jets may be required
For this purpose I combine
together preferably in portable form, two or more sets of hydriulic rams theso
having a single connection to the main and preferably a single au vessel fiom
which the hose or jet pipe proceeds In order that the several runs may deliver
into the air vessel not simultaneously but successively I make the passages from
the main to them of different lengths or some of these passages more bent than
others of them so that the rams which have the most direct passages shall start
before those having passages les direct For the purpose of overbalancing the
valves of the rams so as to cause them to open when the momentum of the water
16 destroyed I use springs which I adjust by means of screws to suit the pressure
in the main to which the apparatus is applied I also, by means of screw stops,
adjust the extent of opening of the valves as may be required
ABEL & IMRAY
Agents for the Applicant,
28, Southampton Buildings,
London, W C

page_text: I FRANCIS BOLTON of No 4 The Sanctuary, Westminster in the County_of
Middlesex, Knight, do hereby declare the nature of my invention for "JFT
APPARATUS FOR FIRF EXTINCTION AND LIKE PURPOSES" 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 apparatus whereby I can obtain from a low pressure
water main, jets of considerable force, available for extinction of fire, or for other
purposes for which such jets may be required.
The said apparatus is based on the action of a body of water flowing through
a pipe whereby when its flow through an opening is periodically restricted, the
momentum attained by the moving body will enable it to propel a portion thereof
through an opening of smaller area to a greater beight than that due to the head
that produces the flow through the pipe
According to one arrangement for carrying my invention into effect, I combine
together, preferably in portable form, two or more sets of hydraulic rams these
having a single connection to the main and preferably a single au vessel from
which the hose or jet pipe proceeds In order that the several rams may deliver
into the air vessel not simultaneously but successively I make the passages from
the main to them of different lengths or some of these passages more bent than
others of them, so that the rams which have the most direct passages shall start
before those having passages less direct. For the purpose of overbalancing the
valves of the rams so as to cause them to open when the momentum of the water
is destroyed, I use spungs which I adjust by means of screws to suit the pressure
in the main to which the apparatus is applied I also by means of screw stops,
adjust the extent of opening of the valves as may be required
According to another arrangement I place several openings on the pipe from the
main each controlled by valves, on suddenly closing the majority of these by
means of a lever or a hydraulic or other motor, the flow of water through those
openings that remain open is greatly increased, so that if a hose and jet be
attached, the water will be thrown further than it would be by the direct pressure
froin the main.
Having now particularly described and ascertained the nature of my sud
invention and in what mannor the same is to be performed I declare that what
I claim 18
1, l'he use of apparatus wherein intermittent jets of water of higher pressure
than that of the main supplying the jet, are obtained by means of the hydraulic

page_text: ram action of the water resulting from the rapid opening and closing of valves on
one or more discharge openings on the main as above described
2 In apparatus such as is referred to in the preceding claim the combination
of hydraulic rams as described so as to automatically effect the opening and closing
of the valves.