US1683726A - Boiler plug - Google Patents

Boiler plug Download PDF

Info

Publication number
US1683726A
US1683726A US15793126A US1683726A US 1683726 A US1683726 A US 1683726A US 15793126 A US15793126 A US 15793126A US 1683726 A US1683726 A US 1683726A
Authority
US
United States
Prior art keywords
plug
locking
seat
locking piece
boiler
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
Inventor
Elwood K Pierce
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.)
CAST STEEL DEVICES Co
Original Assignee
CAST STEEL DEVICES Co
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 CAST STEEL DEVICES Co filed Critical CAST STEEL DEVICES Co
Priority to US15793126 priority Critical patent/US1683726A/en
Application granted granted Critical
Publication of US1683726A publication Critical patent/US1683726A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B37/00—Component parts or details of steam boilers
    • F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
    • F22B37/22—Drums; Headers; Accessories therefor
    • F22B37/221—Covers for drums, collectors, manholes or the like
    • F22B37/223—Boiler plugs, e.g. for handholes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T292/00—Closure fasteners
    • Y10T292/23—Cross bars
    • Y10T292/237—Screw-operating means

Definitions

  • This invention relates to removable closures for pressure chambers such as tube still junction boxes, headers, return bends, etc, and has for its principal obJect to provide a pressure resisting closure that can readily applied or. detached, and to permit ready access to the inside of the chamber.
  • Figure 2 is a sectional view taken on line 2-2 of Figure 1.
  • Figure 3 is a perspective view of the removable locking piece, showing details of the locking lugs thereon.
  • Figure 4 is'an enlarged fragmentary view showing a portion of the retainingfianges 0 with which the locking lugs engage.
  • 10 indicates a pressure chamber casing to which the device is applied with annular opening 11 forming a seat for the closure and a cylindricalwall or ring 12 surrounding the outer slde of said seat and preferably formed integral with the casing 10.
  • the closure device comprises a plug member 13 having an annular inwardly inclined face 11 adapted to engage the seat 11 as shown.
  • This plug member is provided with spaced holes 14, 14 in its upper face, adapted to receive a grinding tool of any approved t pe for grinding said plug in'its valve seat, t ereb 'aflt'ording a tight pressure reslstlng joint or the purpose intended.
  • the plug is maintained in place by means of a 'set screw 15, having a threaded engagement 40 with a removable locking piece 16 which is detachably connected by means of lugs withdrawn from the orifice.
  • a recess 21 is formed at a corner of the loc ing lug 17 in position .the position in which it is inserted in or to permit the locking piece to be dropped 7 in the orifice without interference with the stop 20.
  • This recessed portion 21 is clearly shown in Figure 3.
  • the set screw is brought into contact with the pedestal 22 on the top of valve member 13 and by screwing down the set screw 15 the plug 13 maybe tightened in its seat, forming a tight 'oint.
  • the device above described is the provision for easy removal or replacementof the plug, and means for regrinding the plug when necessary in order to assure a pressure-tight joint at all times.
  • a further advantage is aiforded by providing the locking lugs 17, 17 and their cooperating flanges 19, 19 of maximum width, so as to be rotatable through a full 90 angle, and providing correspondingly broad bearing surfaces, so as to eliminate dan er of tipping or accidental displacement oi? the locking piece.
  • annular casing provided with a pair of oppositely disposed locking flanges and intermediate slot openings all of substantially equal circumferential length, a closure member, a locking piece, a screw threaded throu h said locking member for engaging said 0 osure member, said locking piece having a pair of oppositely disposed lugs adapted to be inserted in said slot openings and rotatable into interlocking position beneath said locking flanges, and a stop formed integrally with said casing at one side of one of said slot openings limiting rotation of said locking member at substantially a quarter turn from its unlocked position, one of said locking lugs being cut away at a lower corner thereof to accommodate said stop.
  • a chamber having an opening defined by a frusto-com'cal plug seat, a plug adapted to fit in said seat to form a pressure-tight joint,

Description

Sept. 11, 1928. 1,683,726
( E. K. PIERCE BOILER PLUG Filed Dec. 30, 1926 v Patented Sept. 7 11 1928.
- 1,683,726 PATENT OFFICE.
ELWOOD K. PIERCE, 01 SPRINGFIELD, OHIO, .ASSIGNOR TO THE CAST STEEL DEVICES COMPANY, OF LIMA, OHIO, .A CORPORATION OF OHIO.
BOILER Imus.
Application filed December 30,1926 Serial No. 157,931.
This invention relates to removable closures for pressure chambers such as tube still junction boxes, headers, return bends, etc, and has for its principal obJect to provide a pressure resisting closure that can readily applied or. detached, and to permit ready access to the inside of the chamber.
The invention may best be understood by reference to the accompanying drawing, in which Figure lis a plan view of the device disposed in lockingposition. 0
Figure 2 is a sectional view taken on line 2-2 of Figure 1.
Figure 3 is a perspective view of the removable locking piece, showing details of the locking lugs thereon. Figure 4 is'an enlarged fragmentary view showing a portion of the retainingfianges 0 with which the locking lugs engage.
Referring now to details of the devlce 11-. lustrated herewith, 10 indicates a pressure chamber casing to which the device is applied with annular opening 11 forming a seat for the closure and a cylindricalwall or ring 12 surrounding the outer slde of said seat and preferably formed integral with the casing 10. Y
The closure device comprises a plug member 13 having an annular inwardly inclined face 11 adapted to engage the seat 11 as shown. This plug member is provided with spaced holes 14, 14 in its upper face, adapted to receive a grinding tool of any approved t pe for grinding said plug in'its valve seat, t ereb 'aflt'ording a tight pressure reslstlng joint or the purpose intended. The plug is maintained in place by means of a 'set screw 15, having a threaded engagement 40 with a removable locking piece 16 which is detachably connected by means of lugs withdrawn from the orifice. In order to accommodate the sto a recess 21 is formed at a corner of the loc ing lug 17 in position .the position in which it is inserted in or to permit the locking piece to be dropped 7 in the orifice without interference with the stop 20. This recessed portion 21 is clearly shown in Figure 3.
After the locking lug is in position as shown in F igure 1, the set screw is brought into contact with the pedestal 22 on the top of valve member 13 and by screwing down the set screw 15 the plug 13 maybe tightened in its seat, forming a tight 'oint.
Among the advantages oi the device above described is the provision for easy removal or replacementof the plug, and means for regrinding the plug when necessary in order to assure a pressure-tight joint at all times. A further advantage is aiforded by providing the locking lugs 17, 17 and their cooperating flanges 19, 19 of maximum width, so as to be rotatable through a full 90 angle, and providing correspondingly broad bearing surfaces, so as to eliminate dan er of tipping or accidental displacement oi? the locking piece.
I claim as my invention:
1. In a device of the character set forth an annular casing provided with a pair of oppositely disposed locking flanges and intermediate slot openings all of substantially equal circumferential length, a closure member, a locking piece, a screw threaded throu h said locking member for engaging said 0 osure member, said locking piece having a pair of oppositely disposed lugs adapted to be inserted in said slot openings and rotatable into interlocking position beneath said locking flanges, and a stop formed integrally with said casing at one side of one of said slot openings limiting rotation of said locking member at substantially a quarter turn from its unlocked position, one of said locking lugs being cut away at a lower corner thereof to accommodate said stop. I
2. In a device of the character described, a chamber having an opening defined by a frusto-com'cal plug seat, a plug adapted to fit in said seat to form a pressure-tight joint,
5 an annular casing above. saidopening. provided with a pair of oppositely disposed locking flanges and intermediate slot openings, a locking piece adapted to be inserted in said slot openings and rotatable into 10 interlocking position beneath said locking
US15793126 1926-12-30 1926-12-30 Boiler plug Expired - Lifetime US1683726A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US15793126 US1683726A (en) 1926-12-30 1926-12-30 Boiler plug

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US15793126 US1683726A (en) 1926-12-30 1926-12-30 Boiler plug

Publications (1)

Publication Number Publication Date
US1683726A true US1683726A (en) 1928-09-11

Family

ID=22565950

Family Applications (1)

Application Number Title Priority Date Filing Date
US15793126 Expired - Lifetime US1683726A (en) 1926-12-30 1926-12-30 Boiler plug

Country Status (1)

Country Link
US (1) US1683726A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2566870A (en) * 1947-03-04 1951-09-04 Beagle Victor Emanuel Cover for curb boxes and the like
US2627361A (en) * 1949-09-12 1953-02-03 Smith Corp A O Pressure vessel closure seal
US2785829A (en) * 1955-06-03 1957-03-19 Acf Ind Inc Fitting closure
US2942754A (en) * 1957-05-20 1960-06-28 Acf Ind Inc Refinery fitting

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2566870A (en) * 1947-03-04 1951-09-04 Beagle Victor Emanuel Cover for curb boxes and the like
US2627361A (en) * 1949-09-12 1953-02-03 Smith Corp A O Pressure vessel closure seal
US2785829A (en) * 1955-06-03 1957-03-19 Acf Ind Inc Fitting closure
US2942754A (en) * 1957-05-20 1960-06-28 Acf Ind Inc Refinery fitting

Similar Documents

Publication Publication Date Title
US2179045A (en) Locked pipe closure
US2684779A (en) Self-sealing closure fitting
US1683726A (en) Boiler plug
US1953110A (en) Flow bean
US1503187A (en) Radiator cap for water-cooled automobile engines
US2031350A (en) Steel container fitting
US1457155A (en) Container
US2328020A (en) Retractible spout
US2286175A (en) Anchored drum plug fixture
US3333724A (en) Quick change plug
US1758909A (en) Tube closure or header
US442809A (en) Coupling
US2651528A (en) Container closure
US1704854A (en) Cover structure for valve service boxes
US1909554A (en) Radiator cap
US1891033A (en) Sealing cap for the plugs of metallic drums and the like
US1459437A (en) Receptacle closure and seal
US1753387A (en) Pipe-bend plug
US590584A (en) Range-boiler
US1783129A (en) Hand-hole plate
US1839053A (en) Safety gas fixture
US1734343A (en) Handhole fitting
US1381598A (en) Spigot
US2004997A (en) Sealing device
US888255A (en) Hand-hole closure.