US3389753A - Swivel tube connection for fire extinguishers - Google Patents

Swivel tube connection for fire extinguishers Download PDF

Info

Publication number
US3389753A
US3389753A US517622A US51762265A US3389753A US 3389753 A US3389753 A US 3389753A US 517622 A US517622 A US 517622A US 51762265 A US51762265 A US 51762265A US 3389753 A US3389753 A US 3389753A
Authority
US
United States
Prior art keywords
fire extinguisher
head
swivel tube
passageway
fire
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US517622A
Inventor
John W Howard
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Automatic Sprinkler Corp
Scott Technologies Inc
Original Assignee
Automatic Sprinkler Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Automatic Sprinkler Corp filed Critical Automatic Sprinkler Corp
Priority to US517622A priority Critical patent/US3389753A/en
Application granted granted Critical
Publication of US3389753A publication Critical patent/US3389753A/en
Assigned to FIGGIE INTERNATIONAL INC. reassignment FIGGIE INTERNATIONAL INC. CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). EFFECTIVE JUNE 1, 1981. Assignors: A-T-O INC.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C13/00—Portable extinguishers which are permanently pressurised or pressurised immediately before use
    • A62C13/62—Portable extinguishers which are permanently pressurised or pressurised immediately before use with a single permanently pressurised container
    • A62C13/64—Portable extinguishers which are permanently pressurised or pressurised immediately before use with a single permanently pressurised container the extinguishing material being released by means of a valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L27/00—Adjustable joints, Joints allowing movement
    • F16L27/08—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe
    • F16L27/087—Joints with radial fluid passages
    • F16L27/093—Joints with radial fluid passages of the "banjo" type, i.e. pivoting right-angle couplings

Definitions

  • ABSTRACT OF THE DISCLOSURE A swivel tube connection for a fire extinguisher head positioning, supporting and establishing communication between a valved passageway in said fire extinguisher head and said swivel tube.
  • This invention relates to fire extinguishers and more particularly to fire extinguishers in which the fire extinguishing agent such as carbon dioxide, for example, is directed from the extinguisher to a fire by means of a swivel type horn.
  • the fire extinguishing agent such as carbon dioxide
  • the principal object of the invention is the provision of a swivel tube connection for a fire extinguisher that is of simple economic construction and which will provide a free and uniform swivel or pivoting action between the fire extinguisher and a discharge horn.
  • a further object of the invention is the provision of a swivel tube construction for a fire extinguisher which reinforces the swivel tube at its point of engagement with the fire extinguisher.
  • a still further object of the invention is the provision of a swivel tube connection for a fire extinguisher which provides a rotating member journalled in the fire extinguisher head and extending into the swivel tube and engaging the same so as to desirably position the swivel tube relative to the fire extinguisher head.
  • the swivel tube connection for fire extinguishers disclosed herein comprises an improvement in the art relating to portable fire extinguishers wherein the fire extinguishing agent is discharged from the fire extinguisher through a valve in the head thereof and by way of a swivel tube communicating with a directional horn.
  • Such fire extinguishers are commonly employed in connection with the use of carbon dioxide and/or dry chemicals for the extinguishment of fires and the swivel tube connections heretofore known in the art and used in similar portable fire extinguishers have had a common problem in maintaining a suitable freely swivelling action between the swivel tube and the fire extinguisher while at the same time maintaining an unobstructed passageway for the fire extinguishing agent.
  • the present invention provides a transverse passageway in the fire extinguisher head which passageway communicates with the valve chamber in the head and thus is in a position to receive the fire extinguishing agent when released by the valve.
  • the present invention mounts a hollow threaded bolt in the transverse passageway in the fire extinguisher head and secures the swivel tube to the threaded portion of the bolt to establish a highly desirable connection therebetween.
  • Transverse openings in the hollow bolt establish communication with the valve chamber in the fire extinguisher head so that the fire extinguishing agent will freely enter the hollow bolt and flow therethrough into the swivel tube.
  • the construction is such that the hollow bolt reinforces the swivel tube and that end thereof engaged partially within the transverse passageway in the fire extinguisher head and the entire device is freely rotatable in the head and at the same time liquid tight due to O-ring sealing members incorporated in the construction.
  • FIGURE 1 is a vertical section through a fire extinguisher head.
  • FIGURE 2 is a horizontal section on line 22 of FIGURE 1.
  • FIGURE 3 is an enlarged detailed elevation with parts broken away illustrating a portion of the device seen in FIGURES 1 and 2.
  • the fire extinguisher head comprises a body member having an exteriorly threaded depending annular boss 11 which in turn has a bushing 12 threaded into the lower end thereof.
  • the bushing 12 provides for the connection of a dip tube extending into the fire extinguisher if desired and the exteriorly threaded boss 11 engages a threaded collar in the fire extinguisher to establish connection therewith as will be understood by those skilled in the art.
  • a passageway 13 extends through the boss and upwardly into the head 10 and a portion thereof defines a valve seat 14.
  • the passageway 13 above the valve seat 14 communicates with a transverse passageway 15.
  • a vertical extension of the passageway 13 movably positions a valve element and actuating plunger 16.
  • the upper end of the valve element and actuating plunger 16 extends out of the fire extinguisher head and adjacent to a handle 17 which is pivotally secured to the fire extinguisher head 10 by a pivot pin 18.
  • a secondary handle 19 positioned below the handle 17 is attached to the fire extinguisher head 10 by means of a rivet 20.
  • a look pin 21 positioned through depending portions of the handle 17 normally engages the upper end of a safety nut 22 which positions a safety disc 23 in fluid tight relation to a safety vent in the fire extinguisher head 10.
  • a coil spring 24 normally biases the valve element and plunger 16 to a closed position as seen in FIGURE 1.
  • the transverse passageway rotatably positions a hollow bolt 25 which has an enlarged head 26 and an oppositely disposed threaded extension 27.
  • the bolt 25 and its threaded extension 27 are longer than the transverse passageway 15 so that When the threaded extension 27 of the hollow bolt 25 is threadably engaged in the end of a swivel tube 28 the tube will be engaged a substantial distance beyond the end of the transverse passageway 15 in the fire extinguisher head 10 and thereby reinforced and supported.
  • the end portion of the swivel tube 28 which is not threaded and is of an inner diameter snugly fitting the unthreaded portion of the hollow bolt 25 will thus be received within the transverse passageway 15 and in abutment with a sealing O-ring 29.
  • a similar sealing O-ring 30 is positioned between the annular head 26 of the hollow bolt 25 and the transverse passageway 15 and it will be observed that the middle portion of the transverse passageway 15 in the fire extinguisher head 10 is of a lesser diameter than the outer ends thereof which provide for suitable journalling and retention of the hol- 3 low bolt 25 and the swivel tube 28 when assembled as described and shown in FIGURE 2 of the drawings.
  • the opposite end of the swivel tube 28 usually includes the right angle bend and extends a distance of several inches and communicates with the smaller end of a directional horn through which fire extinguishing agent in the fire extinguisher is desirably directed when the fire extinguisher is used.
  • the hollow bolt 25 has a plurality of circumferentially spaced openings 31 positioned inwardly from the head 26 and communicating with the hollow interior thereof so as to provide a, passageway for a fire extinguishing agent flowing from the upper end of the passageway 13 in the fire extinguisher head into the transverse passageway in which the hollow bolt 25 is located.
  • a swivel tube connection for a portable fire extin guisher head said head having intersecting passageways therethrough, valve means in one of said passageways and a rotatable hollow bolt positioned in the other one of said passageways, said hollow bolt having openings transversely thereof registering with said valved passageway, the head of said hollow bolt engaging said fire extinguishing head and holding the bolt against longitudinal movement in one direction in said passageway, while permitting rotary movement thereof, the opposite end of said hollow bolt extending exteriorly of said fire extinguisher head,
  • a tube positioned on said exterior portion of said hollow bolt and engaging said fire extinguisher head and holding said bolt against longitudinal movement in an opposite direction.
  • valved passageway is positioned vertically and axially of said fire extinguisher head and said other passageway is horizontally disposed transversely of said head at one side of said valved passageway.

Description

June 25, 1968 J. w. HOWARD SWIVEL TUBE CONNECTION FOR FIRE EXTINGUISHERS Filed Dec. 30, 1965 INVENTOR. John W. Howard ATTORNEY m MM United States Patent 3,389,753 SWIVEL TUBE CONNECTlON FOR FIRE EXTINGUiSI-IERS John W. Howard, Charles Town, W. Va., assignor to Automatic Sprinkler Corporation of America, Youngstown, Ohio, a corporation of Ohio Fiied Dec. 30, 1965, Ser. No. 517,622 3 Claims. (Cl. 16930) ABSTRACT OF THE DISCLOSURE A swivel tube connection for a fire extinguisher head positioning, supporting and establishing communication between a valved passageway in said fire extinguisher head and said swivel tube.
This invention relates to fire extinguishers and more particularly to fire extinguishers in which the fire extinguishing agent such as carbon dioxide, for example, is directed from the extinguisher to a fire by means of a swivel type horn.
The principal object of the invention is the provision of a swivel tube connection for a fire extinguisher that is of simple economic construction and which will provide a free and uniform swivel or pivoting action between the fire extinguisher and a discharge horn.
A further object of the invention is the provision of a swivel tube construction for a fire extinguisher which reinforces the swivel tube at its point of engagement with the fire extinguisher.
A still further object of the invention is the provision of a swivel tube connection for a fire extinguisher which provides a rotating member journalled in the fire extinguisher head and extending into the swivel tube and engaging the same so as to desirably position the swivel tube relative to the fire extinguisher head.
The swivel tube connection for fire extinguishers disclosed herein comprises an improvement in the art relating to portable fire extinguishers wherein the fire extinguishing agent is discharged from the fire extinguisher through a valve in the head thereof and by way of a swivel tube communicating with a directional horn. Such fire extinguishers are commonly employed in connection with the use of carbon dioxide and/or dry chemicals for the extinguishment of fires and the swivel tube connections heretofore known in the art and used in similar portable fire extinguishers have had a common problem in maintaining a suitable freely swivelling action between the swivel tube and the fire extinguisher while at the same time maintaining an unobstructed passageway for the fire extinguishing agent.
The present invention provides a transverse passageway in the fire extinguisher head which passageway communicates with the valve chamber in the head and thus is in a position to receive the fire extinguishing agent when released by the valve.
The present invention mounts a hollow threaded bolt in the transverse passageway in the fire extinguisher head and secures the swivel tube to the threaded portion of the bolt to establish a highly desirable connection therebetween. Transverse openings in the hollow bolt establish communication with the valve chamber in the fire extinguisher head so that the fire extinguishing agent will freely enter the hollow bolt and flow therethrough into the swivel tube. The construction is such that the hollow bolt reinforces the swivel tube and that end thereof engaged partially within the transverse passageway in the fire extinguisher head and the entire device is freely rotatable in the head and at the same time liquid tight due to O-ring sealing members incorporated in the construction.
3,389,753 Patented June 25, 1968 With the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination arrangement of parts and in the details of construction hereinafter described and claimed, it being the intention to cover all changes and modifications of the example of the invention herein chosen for purposes of the disclosure, which do not constitute departures from the spirit and scope of the invention.
The invention is illustrated in the accompanying drawin g, wherein:
FIGURE 1 is a vertical section through a fire extinguisher head.
FIGURE 2 is a horizontal section on line 22 of FIGURE 1.
FIGURE 3 is an enlarged detailed elevation with parts broken away illustrating a portion of the device seen in FIGURES 1 and 2.
By referring to the drawings and FIGURE 1 in particular, it will be seen that the fire extinguisher head comprises a body member having an exteriorly threaded depending annular boss 11 which in turn has a bushing 12 threaded into the lower end thereof.
The bushing 12 provides for the connection of a dip tube extending into the fire extinguisher if desired and the exteriorly threaded boss 11 engages a threaded collar in the fire extinguisher to establish connection therewith as will be understood by those skilled in the art.
A passageway 13 extends through the boss and upwardly into the head 10 and a portion thereof defines a valve seat 14. The passageway 13 above the valve seat 14 communicates with a transverse passageway 15. A vertical extension of the passageway 13 movably positions a valve element and actuating plunger 16. The upper end of the valve element and actuating plunger 16 extends out of the fire extinguisher head and adjacent to a handle 17 which is pivotally secured to the fire extinguisher head 10 by a pivot pin 18. A secondary handle 19 positioned below the handle 17 is attached to the fire extinguisher head 10 by means of a rivet 20. A look pin 21 positioned through depending portions of the handle 17 normally engages the upper end of a safety nut 22 which positions a safety disc 23 in fluid tight relation to a safety vent in the fire extinguisher head 10. A coil spring 24 normally biases the valve element and plunger 16 to a closed position as seen in FIGURE 1.
It will thus be seen that when the fire extinguisher head 10 is positioned in the neck of a cylindrical fire extinguisher, for example, the pressurized contents of the fire extinguisher will flow upwardly when the valve element and plunger 16 is opened and into the transverse passageway 15.
By referring now to FIGURE 2 of the drawing, it will be seen that the transverse passageway rotatably positions a hollow bolt 25 which has an enlarged head 26 and an oppositely disposed threaded extension 27. The bolt 25 and its threaded extension 27 are longer than the transverse passageway 15 so that When the threaded extension 27 of the hollow bolt 25 is threadably engaged in the end of a swivel tube 28 the tube will be engaged a substantial distance beyond the end of the transverse passageway 15 in the fire extinguisher head 10 and thereby reinforced and supported. The end portion of the swivel tube 28 which is not threaded and is of an inner diameter snugly fitting the unthreaded portion of the hollow bolt 25 will thus be received within the transverse passageway 15 and in abutment with a sealing O-ring 29. A similar sealing O-ring 30 is positioned between the annular head 26 of the hollow bolt 25 and the transverse passageway 15 and it will be observed that the middle portion of the transverse passageway 15 in the fire extinguisher head 10 is of a lesser diameter than the outer ends thereof which provide for suitable journalling and retention of the hol- 3 low bolt 25 and the swivel tube 28 when assembled as described and shown in FIGURE 2 of the drawings.
Those skilled in the art will understand that the opposite end of the swivel tube 28 (not shown) usually includes the right angle bend and extends a distance of several inches and communicates with the smaller end of a directional horn through which fire extinguishing agent in the fire extinguisher is desirably directed when the fire extinguisher is used.
By referring now to FIGURES I, 2 and 3 of the drawings it will be seen that the hollow bolt 25 has a plurality of circumferentially spaced openings 31 positioned inwardly from the head 26 and communicating with the hollow interior thereof so as to provide a, passageway for a fire extinguishing agent flowing from the upper end of the passageway 13 in the fire extinguisher head into the transverse passageway in which the hollow bolt 25 is located.
It will occur to those skilled in the art that regardless of the position of the swivel tube 28 and the hollow bolt 25 to which it is afiixed one or more of the openings 31 will always be in a position to establish communication between the passageway 13 and the interior of the swivel tube 28.
It will thus be seen that a swivel tube connection for portable fire extinguishers has been disclosed which meets the several objects of my invention, and having thus described my invention, what I claim is:
1. A swivel tube connection for a portable fire extin guisher head, said head having intersecting passageways therethrough, valve means in one of said passageways and a rotatable hollow bolt positioned in the other one of said passageways, said hollow bolt having openings transversely thereof registering with said valved passageway, the head of said hollow bolt engaging said fire extinguishing head and holding the bolt against longitudinal movement in one direction in said passageway, while permitting rotary movement thereof, the opposite end of said hollow bolt extending exteriorly of said fire extinguisher head,
a tube positioned on said exterior portion of said hollow bolt and engaging said fire extinguisher head and holding said bolt against longitudinal movement in an opposite direction.
2. The improvement in a swivel tube connection for a portable fire extinguisher set forth in claim 1 and wherein said other passageway in said fire extinguisher head has a central portion of smaller diameter than the opposite end portions thereof and wherein the opposite end portions communicate with the opposite outer surfaces of said fire extinguisher head and wherein the head of said hollow bolt is positioned within one end of said other passageway adjacent said area of smaller diameter and wherein the end of said tube is positioned in the opposite end of said other passageway in said fire extinguisher head and adjacent the opposite end of said area of smaller diameter therein and wherein sealing elements are positioned between the opposite ends of said area of smaller diameter and the head of the hollow bolt and the end of said tube respectively.
3. The swivel tube connection for a portable fire extinguisher as set forth in claim 1 and wherein the valved passageway is positioned vertically and axially of said fire extinguisher head and said other passageway is horizontally disposed transversely of said head at one side of said valved passageway.
References Cited UNITED STATES PATENTS 1,532,774 4/1925 Page 285- 2,066,290 12/1936 Hill, et a1. 1693l 2,549,643 1/1949 Hartley 285-190 2,674,325 4/ 1954 Siebens 169-31 3,244,439 4/1966 Montesi 285190 X M. HENSON WOOD, IR., Primary Examiner.
H. NATTER, Assistant Examiner.
US517622A 1965-12-30 1965-12-30 Swivel tube connection for fire extinguishers Expired - Lifetime US3389753A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US517622A US3389753A (en) 1965-12-30 1965-12-30 Swivel tube connection for fire extinguishers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US517622A US3389753A (en) 1965-12-30 1965-12-30 Swivel tube connection for fire extinguishers

Publications (1)

Publication Number Publication Date
US3389753A true US3389753A (en) 1968-06-25

Family

ID=24060543

Family Applications (1)

Application Number Title Priority Date Filing Date
US517622A Expired - Lifetime US3389753A (en) 1965-12-30 1965-12-30 Swivel tube connection for fire extinguishers

Country Status (1)

Country Link
US (1) US3389753A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3736986A (en) * 1971-07-28 1973-06-05 Gen Fire Extinguisher Corp Swivel assembly
US3776313A (en) * 1972-02-04 1973-12-04 Palma J De Temperature responsive automatic fire extinguisher
EP0556028A1 (en) * 1992-02-13 1993-08-18 THORN EMI plc Valve especially for fire extinguishers
US6742599B1 (en) * 1999-11-25 2004-06-01 Seog-Beom Kang Fire extinguisher
USD1023736S1 (en) * 2022-10-27 2024-04-23 Fleece Performance Engineering, Inc. Bolt

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1532774A (en) * 1921-03-10 1925-04-07 John W Page Swivel coupling
US2066290A (en) * 1935-01-17 1936-12-29 Kidde & Co Walter Fire extinguishing apparatus
US2549643A (en) * 1946-11-05 1951-04-17 Siegal Jack Vanity case having a member for automatically wiping clean the mirror containee in the case
US2674325A (en) * 1951-07-21 1954-04-06 C O Two Fire Equipment Co Discharge valve for fire extinguishers
US3244439A (en) * 1964-05-07 1966-04-05 Hydralink Corp Reusable swivel hose coupling

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1532774A (en) * 1921-03-10 1925-04-07 John W Page Swivel coupling
US2066290A (en) * 1935-01-17 1936-12-29 Kidde & Co Walter Fire extinguishing apparatus
US2549643A (en) * 1946-11-05 1951-04-17 Siegal Jack Vanity case having a member for automatically wiping clean the mirror containee in the case
US2674325A (en) * 1951-07-21 1954-04-06 C O Two Fire Equipment Co Discharge valve for fire extinguishers
US3244439A (en) * 1964-05-07 1966-04-05 Hydralink Corp Reusable swivel hose coupling

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3736986A (en) * 1971-07-28 1973-06-05 Gen Fire Extinguisher Corp Swivel assembly
US3776313A (en) * 1972-02-04 1973-12-04 Palma J De Temperature responsive automatic fire extinguisher
EP0556028A1 (en) * 1992-02-13 1993-08-18 THORN EMI plc Valve especially for fire extinguishers
US6742599B1 (en) * 1999-11-25 2004-06-01 Seog-Beom Kang Fire extinguisher
USD1023736S1 (en) * 2022-10-27 2024-04-23 Fleece Performance Engineering, Inc. Bolt

Similar Documents

Publication Publication Date Title
US2208490A (en) Fire extinguisher
US5441113A (en) Fire extinguishing system
US3389753A (en) Swivel tube connection for fire extinguishers
US10058882B1 (en) High pressure water/foam nozzle assembly
US20170021211A1 (en) Ambient Mist Sprinkler Head
US2713916A (en) Automatic sprinkler system
US3719231A (en) Attachment for automatic override of manually operated compressed gas fire extinguishers and alarms
US3178119A (en) Pilot operated sprinkler valve and spray head
US3137417A (en) Valve coupling for container confining and dispensing fluid medium under pressure
US1874356A (en) Quick acting release device for carbon dioxide fire systems
US4856596A (en) Latching valve actuator, nozzle and pressurized fire extinguisher utilizing same
US4557289A (en) Hose nozzle for fire fighting kit
US2704582A (en) Dry powder dispensing apparatus
DE4224891A1 (en) Hand-held fire extinguisher - has internal container in which fire extinguishing foam is produced
US3314578A (en) Spraying apparatus
US20220118299A1 (en) Dry sprinkler
US2682356A (en) Siphon device
US730723A (en) Water-directing appliance for disinfecting or fire-extinguishing purposes.
US3204698A (en) Fire extinguisher having swivel outlet with detachable discharge horn
US3530941A (en) Fire extinguisher with a pin connected control head
US1790995A (en) Itbe extinguishes
KR20230064743A (en) Pistol fireman window that can connect multiple fire hoses
US2527891A (en) Valved nozzle for fire fighting spray guns
US2219178A (en) Fire extinguisher
US2661805A (en) Fire extinguisher sprinkler head

Legal Events

Date Code Title Description
AS Assignment

Owner name: FIGGIE INTERNATIONAL INC.

Free format text: CHANGE OF NAME;ASSIGNOR:A-T-O INC.;REEL/FRAME:003866/0442

Effective date: 19810623