US2134314A - Closure for tank apertures - Google Patents

Closure for tank apertures Download PDF

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Publication number
US2134314A
US2134314A US191702A US19170238A US2134314A US 2134314 A US2134314 A US 2134314A US 191702 A US191702 A US 191702A US 19170238 A US19170238 A US 19170238A US 2134314 A US2134314 A US 2134314A
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United States
Prior art keywords
cover
bolts
lugs
rim
closure
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
US191702A
Inventor
Edward M O'donnell
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Individual
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Priority to US191702A priority Critical patent/US2134314A/en
Application granted granted Critical
Publication of US2134314A publication Critical patent/US2134314A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J13/00—Covers or similar closure members for pressure vessels in general
    • F16J13/02—Detachable closure members; Means for tightening closures
    • F16J13/06—Detachable closure members; Means for tightening closures attached only by clamps along the circumference
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S285/00—Pipe joints or couplings
    • Y10S285/91—Gaskets
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S411/00—Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener
    • Y10S411/999—Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener with retainer, e.g. tether
    • 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
    • Y10T292/08—Bolts
    • Y10T292/0801—Multiple
    • Y10T292/0803—Sliding and swinging
    • 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
    • Y10T292/08—Bolts
    • Y10T292/0911—Hooked end
    • Y10T292/0913—Sliding and swinging
    • Y10T292/0914—Operating means
    • Y10T292/092—Screw
    • 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
    • Y10T292/20—Clamps

Definitions

  • This invention relates to a closure for apertures such as manhole openings in tanks and like metal containers.
  • the object of the present invention is to generally improve and simplify the construction and operation of removable covers; to provide a readily operated fastening means whereby a manhole cover may be quickly applied or released; and particularly to provide a fastening means which is carried by the cover and removable therewith so as to leave a free and unobstructed opening through which entrance orexit may be readily made.
  • Fig. 1 is a plan view of the manhole cover and the fastening means
  • Fig. 2 is'a side elevation of. the same;
  • Fig. 3 is an enlarged cross-section taken on line III-IH showing the cover in closed position and the bolts secured;
  • Fig. 4 is a similar section showing the bolts in released'position and the cover ready for removal;
  • Fig. 5 is a perspective view of one of the bolt Washers.
  • Containers such as tanks, and even boilers, are often provided with manhole openings and covers which are secured by bolts and the like.
  • Either pivoted bolts or stud bolts are usually employed, and they extend through the cover and are secured by nuts threaded to the bolts and engaging the face of the cover.
  • the bolts When the nuts and cover are removed, the bolts usually surround the manhole opening, and as such, make it diflicult for an operator to enter, as his clothing will invariably get caught on one or another of the bolts.
  • the present invention relates to a removable manhole cover which leaves a free unobstructed opening for an operator to crawl through.
  • B indicates a portion of a tank, and 2 an opening formed therein.
  • a rim H on the outer face of which is formed a hook-shaped annular flange IS.
  • the cover proper is indicated at It and is provided with an annular flange I! on which are formed pairs of spaced lugs I8.
  • a bolt 19 is disposed between each pair of lugs.
  • Each bolt is slotted longitudinally as shown at 20, and is secured against removal by pins 2
  • the upper ends of the lugs are provided with flat faces 22 and angular faces 23.
  • a washer such'as shown at 24 (see Figs. 3, 4 and 5) is placed over each bolt, and on top of the lugs and cooperating therewith are wing nuts 25.-
  • Flg. 3 shows the cover in closed position. In this position the lower hook-shaped ends 21 of. the bolts engage the rim or flange l5, and by tightening the wing nuts 25, the cover will be pulled against the rim l4 and there secured. If it is desired to release the cover, it is only necessary to loosen the wing nuts and to swing the bolts about their pivots to assume the position shown in Fig. 4. By again tightening the wing nuts, the bolts will be held against pivotal movement about the pins 2
  • the washer 24 (see Fig. 5) is an elongated washer with a hole 24a at one end to permit it to be slipped over the bolt.
  • the washer is also bent to fit the angular faces 22 and 23 of the lugs, and is furthermore provided with a lug 24b which extends into the space formed between each pair of lugs so as to secure the washer against rotation and the nuts being tightened.
  • the washers 24 When the cover is in place and. secured by tightening of thebolts I9, the washers 24 will assume the position shown in Fig. 3that is, the lugs 2417 will engage the space between the angular faces 23 of the lugs l8. When the bolts are released, as shown in Fig. 4, the washers are r0- tated a half-revolution so that the lugs 24b will engage or extend downwardly between the faces 22 of the lugs Hi. In either position, the washers are held against rotation so that the nuts may be tightened or released without displacing the washers.
  • the cover When the cover is released, as shown in Fig. 4, it may be lifted off or completely removed, and an entirely free or, unobstructed opening is effected for the operator to enter or make an exit from without danger of any of his clothing being caught by any bolts, lugs or other protuberances.
  • the cover may be hinged as shown at 26 (see Figs. 1 and 2) and as such, may be swung to one side when the manhole is to be opened.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)

Description

Filed Fleb. 21, 1933 IN V EN TOR. 6mm 70. 039W.
ATTORNEY Patented Oct. 25, 1938 UNITED STATES PATENT OFFICE 2 Claims.
This invention relates to a closure for apertures such as manhole openings in tanks and like metal containers.
The object of the present invention is to generally improve and simplify the construction and operation of removable covers; to provide a readily operated fastening means whereby a manhole cover may be quickly applied or released; and particularly to provide a fastening means which is carried by the cover and removable therewith so as to leave a free and unobstructed opening through which entrance orexit may be readily made.
The cover and fastening means are shown by way of illustration in the accompanying drawing in which- Fig. 1 is a plan view of the manhole cover and the fastening means;
Fig. 2 is'a side elevation of. the same;
Fig. 3 is an enlarged cross-section taken on line III-IH showing the cover in closed position and the bolts secured;
Fig. 4 is a similar section showing the bolts in released'position and the cover ready for removal; and
Fig. 5 is a perspective view of one of the bolt Washers.
Containers such as tanks, and even boilers, are often provided with manhole openings and covers which are secured by bolts and the like. Either pivoted bolts or stud bolts are usually employed, and they extend through the cover and are secured by nuts threaded to the bolts and engaging the face of the cover. When the nuts and cover are removed, the bolts usually surround the manhole opening, and as such, make it diflicult for an operator to enter, as his clothing will invariably get caught on one or another of the bolts. The present invention relates to a removable manhole cover which leaves a free unobstructed opening for an operator to crawl through.
Referring to the drawing in detail, and particularly Figs. 2, 3 and 4, B indicates a portion of a tank, and 2 an opening formed therein. Secured around the opening is a rim H on the outer face of which is formed a hook-shaped annular flange IS. The cover proper is indicated at It and is provided with an annular flange I! on which are formed pairs of spaced lugs I8. A bolt 19 is disposed between each pair of lugs. Each bolt is slotted longitudinally as shown at 20, and is secured against removal by pins 2|. The bolts are free to pivot about the pins 2|, and they are also longitudinally removable with relation thereto, as will hereinafter appear.
The upper ends of the lugs are provided with flat faces 22 and angular faces 23. A washer such'as shown at 24 (see Figs. 3, 4 and 5) is placed over each bolt, and on top of the lugs and cooperating therewith are wing nuts 25.-
Flg. 3 shows the cover in closed position. In this position the lower hook-shaped ends 21 of. the bolts engage the rim or flange l5, and by tightening the wing nuts 25, the cover will be pulled against the rim l4 and there secured. If it is desired to release the cover, it is only necessary to loosen the wing nuts and to swing the bolts about their pivots to assume the position shown in Fig. 4. By again tightening the wing nuts, the bolts will be held against pivotal movement about the pins 2|, and will furthermore be held in a position which permits the cover to be readily removed or applied as the case may be, asthe hook-shaped ends 21 are held outwardly free of the rim or flange l5.
The washer 24 (see Fig. 5) is an elongated washer with a hole 24a at one end to permit it to be slipped over the bolt. The washer is also bent to fit the angular faces 22 and 23 of the lugs, and is furthermore provided with a lug 24b which extends into the space formed between each pair of lugs so as to secure the washer against rotation and the nuts being tightened.
When the cover is in place and. secured by tightening of thebolts I9, the washers 24 will assume the position shown in Fig. 3that is, the lugs 2417 will engage the space between the angular faces 23 of the lugs l8. When the bolts are released, as shown in Fig. 4, the washers are r0- tated a half-revolution so that the lugs 24b will engage or extend downwardly between the faces 22 of the lugs Hi. In either position, the washers are held against rotation so that the nuts may be tightened or released without displacing the washers.
When the cover is released, as shown in Fig. 4, it may be lifted off or completely removed, and an entirely free or, unobstructed opening is effected for the operator to enter or make an exit from without danger of any of his clothing being caught by any bolts, lugs or other protuberances. If desired, the cover may be hinged as shown at 26 (see Figs. 1 and 2) and as such, may be swung to one side when the manhole is to be opened.
While these and other features of the present invention have been more or less specifically described and illustrated, I wish it understood that various changes may be resorted to within the scope oi. the appended claims, and that the materials and finish oi the several parts employed may claim and desire to secure by Letters Patent is- 1. The combination with a container having an opening formed therein or a rim member secured to the container and surrounding the opening, a cover seated on the rim and forming a closure for the opening, a plurality of bolts pivotally mounted on the cover and having hook-shaped lower ends movable into and out of engagement with the rim, said bolts being longitudinally movable with relation. to their pivots, a nut on each bolt to draw the cover tight, and means ior securing the bolts against pivotal movement when their lower hook-shaped ends have been swung outwardly away from the rim.
snags 2. The combination with a container having an opening formed therein oi a rim member se-, cured to the container and surrounding the opening, a cover seated on the rim and iorming'h closure for the opening, pairs of spaced lugs on the cover. a bolt pivoted between each pair oi lugs, said bolts being longitudinally slotted to permit longitudinal movement or the bolts between the lugs, a hook-shaped lug on each bolt engageable with the rim, a face on each pair of lugs parallel with the cover, a second face on each pair of lugs disposedson an angle with relation to the face otthe cover, an elongated washer for each'boit, said washer being bent to engage both the parallel and angular faces of the lugs, a nut on each bolt and engageable with the washers, and means for securing the washers against rotation when the nuts are rotated.
EDWARD M. ODONNELL. 20
US191702A 1938-02-21 1938-02-21 Closure for tank apertures Expired - Lifetime US2134314A (en)

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Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2456744A (en) * 1947-01-11 1948-12-21 Pacific Coast Eng Co Universal pipe coupling
US2569043A (en) * 1946-05-27 1951-09-25 Waldemar A Endter Floating bolt latch
US2569044A (en) * 1946-10-18 1951-09-25 Waldemar A Endter Latch safety catch
US2644559A (en) * 1945-10-23 1953-07-07 Glenn T Randol Automotive variable-ratio power transmission
US2663268A (en) * 1952-12-30 1953-12-22 Gen Electric Hatchway closure
US2703061A (en) * 1950-11-13 1955-03-01 Robert D Shields Closures for inspection openings of furnaces
US2929645A (en) * 1956-08-17 1960-03-22 Meckum Engineering Inc Conduit connection having alignment means
US2996318A (en) * 1958-06-17 1961-08-15 Marine Moisture Control Co Cam operated quick acting pipe coupler
US3146009A (en) * 1961-10-20 1964-08-25 Pullman Inc Screw type door lock for railway cars
DE1183009B (en) * 1955-11-28 1964-12-03 Stockholms Superfosfat Fab Ab Closure for storage and transport containers with a cubic shape
US3228353A (en) * 1963-08-05 1966-01-11 Acf Ind Inc Hatch cover structure for railway cars
US3367497A (en) * 1965-07-22 1968-02-06 Allen Bradley Co Clamp for sieve stack assemblies of reciprocating air column sifters and the like
US3510154A (en) * 1968-09-17 1970-05-05 Farr Co Rotary cam fastener
US3736388A (en) * 1971-12-27 1973-05-29 J Thompson Method and accessory for testing the serviceability of telephone conductors
US3736387A (en) * 1970-12-14 1973-05-29 J Thompson Method and accessory for testing the serviceability of telephone conductors
US4498695A (en) * 1981-09-01 1985-02-12 Robert C. Duckett Pressure cooker lid latch and lock
US5087088A (en) * 1991-02-13 1992-02-11 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration J-hook latching device
FR2746888A1 (en) * 1996-03-27 1997-10-03 Armor Inox Sa Container cover lock, e.g. for pressurised gas or steam tank
US20080190925A1 (en) * 2007-02-12 2008-08-14 Steven Richard Ambriz Closure safety interlock for a pressure vessel
FR2947028A1 (en) * 2009-06-23 2010-12-24 Acces Innovations Services Locking device for e.g. trap door, has nut with cramp with opening allowing nut to slide along body and contact surface supported against door, and stopping unit stopping rotation of cramp, so that contact surface is directed toward door
WO2011056355A1 (en) * 2009-11-06 2011-05-12 Shop Vac Corporation Vacuum device with positive pressure tank
US20120205380A1 (en) * 2011-02-16 2012-08-16 Klaus Rekasch Rail vehicle having a detachably attached housing lid
US20140183194A1 (en) * 2013-01-01 2014-07-03 Steven Richard Ambriz Closure safety interlock with lockout plate for pressure vessel

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2644559A (en) * 1945-10-23 1953-07-07 Glenn T Randol Automotive variable-ratio power transmission
US2569043A (en) * 1946-05-27 1951-09-25 Waldemar A Endter Floating bolt latch
US2569044A (en) * 1946-10-18 1951-09-25 Waldemar A Endter Latch safety catch
US2456744A (en) * 1947-01-11 1948-12-21 Pacific Coast Eng Co Universal pipe coupling
US2703061A (en) * 1950-11-13 1955-03-01 Robert D Shields Closures for inspection openings of furnaces
US2663268A (en) * 1952-12-30 1953-12-22 Gen Electric Hatchway closure
DE1183009B (en) * 1955-11-28 1964-12-03 Stockholms Superfosfat Fab Ab Closure for storage and transport containers with a cubic shape
US2929645A (en) * 1956-08-17 1960-03-22 Meckum Engineering Inc Conduit connection having alignment means
US2996318A (en) * 1958-06-17 1961-08-15 Marine Moisture Control Co Cam operated quick acting pipe coupler
US3146009A (en) * 1961-10-20 1964-08-25 Pullman Inc Screw type door lock for railway cars
US3228353A (en) * 1963-08-05 1966-01-11 Acf Ind Inc Hatch cover structure for railway cars
US3367497A (en) * 1965-07-22 1968-02-06 Allen Bradley Co Clamp for sieve stack assemblies of reciprocating air column sifters and the like
US3510154A (en) * 1968-09-17 1970-05-05 Farr Co Rotary cam fastener
US3736387A (en) * 1970-12-14 1973-05-29 J Thompson Method and accessory for testing the serviceability of telephone conductors
US3736388A (en) * 1971-12-27 1973-05-29 J Thompson Method and accessory for testing the serviceability of telephone conductors
US4498695A (en) * 1981-09-01 1985-02-12 Robert C. Duckett Pressure cooker lid latch and lock
US5087088A (en) * 1991-02-13 1992-02-11 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration J-hook latching device
FR2746888A1 (en) * 1996-03-27 1997-10-03 Armor Inox Sa Container cover lock, e.g. for pressurised gas or steam tank
US20080190925A1 (en) * 2007-02-12 2008-08-14 Steven Richard Ambriz Closure safety interlock for a pressure vessel
US7850214B2 (en) * 2007-02-12 2010-12-14 Axxiom Manufacturing, Inc. Closure safety interlock for a pressure vessel
FR2947028A1 (en) * 2009-06-23 2010-12-24 Acces Innovations Services Locking device for e.g. trap door, has nut with cramp with opening allowing nut to slide along body and contact surface supported against door, and stopping unit stopping rotation of cramp, so that contact surface is directed toward door
WO2011056355A1 (en) * 2009-11-06 2011-05-12 Shop Vac Corporation Vacuum device with positive pressure tank
US20110107549A1 (en) * 2009-11-06 2011-05-12 Shop-Vac Corporation Vacuum device with positive pressure tank
US9826688B2 (en) * 2009-11-06 2017-11-28 Shop Vac Corporation Vacuum device with positive pressure tank
US20120205380A1 (en) * 2011-02-16 2012-08-16 Klaus Rekasch Rail vehicle having a detachably attached housing lid
US8505466B2 (en) * 2011-02-16 2013-08-13 Siemens Aktiengesellschaft Rail vehicle having a detachably attached housing lid
US20140183194A1 (en) * 2013-01-01 2014-07-03 Steven Richard Ambriz Closure safety interlock with lockout plate for pressure vessel
US20160348846A1 (en) * 2013-01-01 2016-12-01 Steven Richard Ambriz Closure safety interlock with lockout plate for pressure vessel

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