US2294858A

US2294858A - High pressure fluid container

Info

Publication number: US2294858A
Application number: US328807A
Authority: US
Inventors: Scott E Allen
Original assignee: CO Two Fire Equipment Co
Current assignee: CO Two Fire Equipment Co
Priority date: 1940-04-10
Filing date: 1940-04-10
Publication date: 1942-09-01
Anticipated expiration: 1959-09-01

Description

Sept. 1, 1942.

5. E. ALLEN HIGH PRESSURE FLUID CONTAINER Filed April 10, 1940 Patented Sept. 1, 1942 HIGH. PRESSURE FLUID CONTAINER Scott E. Allen, Verona, N. .12, assignor to C-O-Two Fire Equipment Company, Newark, N. 1., a corporation Delaware Application April 10,

This invention relates to improvements in high pressur fire extinguishing fluid containers.

Under the Interstate Commerce Commission regulations cylinders containing fire extinguishing fluid under high pressure must be retested hydrostatically every five years. This requires removal of the fire extinguishing fluid from the 15340, Serial No. 328,807

container and recharging of the container. Withthe containers now in use it is necessary to disconnect the discharge head from the neck of the container in order to remove the syphon tube so that the fluid used in hydrostaticaily testing the container may completely fill the container for testing and be drained from the container after the test has been made. The weakest part of the discharge head is at a point adjacent to the upper end of the neck of the container and it frequently happens that the discharge head is broken off at this point during an attempt to disconnect the discharge head-from the container. Also on account of the construction of the head it is diflicult to apply a wrench close to the neck of the container.

It is one of the objects of my invention to avoid the necessity of removing the discharge head from the container for the hydrostatic testing operation. In accordance with this invention this has been avoided by providing the bottom end of the container with a small threaded opening to receive a threaded closure plug which may of the fluid within the container. Below the sealing disk the body ii may be provided wi the customary safety plug as and the fixture 2!. Threaded in the lower end of th body Ii and projecting close to the bottom end of the container is the usual syphon tube 23.

For the purpose of avoiding the necessity oi removing the discharge head and syphon tube from th container for hydrostatically testing the container I provide the bottom end of the container with a small threaded opening it for receiving a threaded closure piugzt which may be tapered as shown to provide a seal tight fit and which because of its small diameter is much more readily removed from the container than is the large diameter threaded portion of the body threaded in the neck of the container. When it is desired to test the container the fire extinguishing fluid therein may be removed by discharging and then the closure plug 2% may be removed and the container filled completely with water for testing purposes. After the test has been made all of the water can be drained out be removed to completely fill the container with water and to drain all of the water used in the testing operation from.the container so that the testing may be done without disconnecting the discharge head from the neck of the container.

It is a further object of my invention to provide the container with a foot so as to support the bottom end of the container above the floor to protect the threaded closure plug.

Other objects of the invention will appear from the following description taken in connection with the single figure of the drawing which is a vertical diametral section through a container embodying my invention.

A container of the usual shape is shown at l0. Mounted on the container is the usual discharge head which comprises a body I I provided with a reduced portion l2 threaded into the neck l3 of the container. This body is formed with a discharge bore M, which is normally closed by a sealing disk l5 secured against a seat in the boreby a tubular plug IS, the head being provided with a puncturing element I'I operatedby a hand-wheel l8 by means of which the sealing through the opening 28. After this is done the closure plug 29 is threaded in the opening 28 and the container may then be recharged in the usual way.

In order to make provision for supporting the container in upright position on the floor or the like, I provide the container with a foot ring it which may be of cylindrical form and may be shrunk on the container. This foot is preferably continuous circumferentially and is of such height as to support the head of the closure plug 29 the necessary distance from the floor to pre vent injury to the plug. The foot 30 also protects the closure plug 29 against sidewise impacts during transportation. It also protects the threads of the closure plug against moisture, etc. which might cause the same to rust and interfere with the easy removal thereof.

While I have disclosed but one form of my invention, it is to be understood that modifications thereof will be suggested to those familiar with this art after understanding my invention 1. In combination with a container provided with a bottom wall having a concave inner surface, a discharge head threaded in the neck of the container and a syphon tube supported in the discharge head and projecting to a point close disk may be punctured to permit the discharge to the bottom wall of the container, of a closure plug for the container threaded in the bottom wall of the container in a petition opmlite the lower end of the syphon tube permitting the container to be filled completely with fluid for testing purposes without the removal 01! the discharge head and yphon tube. and the container, syphon tube and discharge head to be drain of all of the testing fluid.

2. In combination with a container. having a bottom wall with a concave inner surface, a discharge head secured in the neck of the container andasyphontube connectedin the'boreinthe diacharg