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US795687A - Manhole-cover. - Google Patents

Manhole-cover. Download PDF

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Publication number
US795687A
US795687A US23005704A US1904230057A US795687A US 795687 A US795687 A US 795687A US 23005704 A US23005704 A US 23005704A US 1904230057 A US1904230057 A US 1904230057A US 795687 A US795687 A US 795687A
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US
United States
Prior art keywords
cover
hole
manhole
flange
lug
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
US23005704A
Inventor
Robert Cameron
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.)
Individual
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Individual
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 Individual filed Critical Individual
Priority to US23005704A priority Critical patent/US795687A/en
Application granted granted Critical
Publication of US795687A publication Critical patent/US795687A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/02—Shutters, movable grilles, or other safety closing devices, e.g. against burglary

Definitions

  • This invention relates to the covers of manholes and other similar objects; and it consists in the novel construction and combination of the parts hereinafter fully described and claimed.
  • Figure 1 is a vertical section through a manhole provided with a cover according to this invention.
  • Fig. 2 is a plan view of the same.
  • A is the frame of the manhole, and B is a flange or ledge which projects internally and at a little distance below its top edge.
  • This cover is the cover, which rests on the said ledge, flange, or projection B.
  • This cover has a stationary lug D at one side, which projects from it and extends below the said flange B.
  • This lug is formed integral with the cover or is otherwise rigidly secured to it.
  • the hole E is a hole in the cover on the opposite side of its center from the lug D.
  • the upper part at of this hole is recessed, and 6 represents finger-notches in the cover on opposite sides of the hole.
  • the hole E and its recessed portion are preferably rectangular in shape.
  • This lug F is a removable lug provided with a head f. This lug F is dropped through the hole E into engagement with the flange B, and its head f on ages with the recessed part (1 of the hole, in wliich it fits snugly. These two lugs prevent the cover from being accidentally displaced.
  • the removable lug F is first lifted out of the hole by the fingers, and the cover can then be raised by inserting a finger or a hook into the hole E.
  • What I claim is The combination, with a frame provided with a projecting flange, of a cover which rests on the said flange and which is provided on one side with a lug D which projects under the said flange, said cover having also at its other side a hole E having a rectangular recessed portion d and finger-notches e at the sides of the said recessed portion, and a removable lug F which is dropped loosely through the hole E into engagement with the said flange and which has a rectangular head which fits in the said recess d.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)

Description

No. 795,687. PATENTED, JULY 25, 1905. R. CAMERON.
MANHOLE COVER.
APPLICATION FILED OCT. 26.1904
&
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I 1 I I I a I j I WITNESSES: INVENTOR By M I? I v. Alforney UNITED STATES PATENT OFFICE.
7 Specification of Letters Patent.
Patented July 25, 1905.
Application filed October 26,190 i. Serial No. 230,057.
To all whom it may concern.-
Be it known that I, ROBERT CAMERON, a citizen of the United States, residing at Boston, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Manhole Covers and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to. make and use the same. y
This invention relates to the covers of manholes and other similar objects; and it consists in the novel construction and combination of the parts hereinafter fully described and claimed.
In the drawings, Figure 1 is a vertical section through a manhole provided with a cover according to this invention. Fig. 2 is a plan view of the same.
A is the frame of the manhole, and B is a flange or ledge which projects internally and at a little distance below its top edge.
C is the cover, which rests on the said ledge, flange, or projection B. This cover has a stationary lug D at one side, which projects from it and extends below the said flange B. This lug is formed integral with the cover or is otherwise rigidly secured to it.
E is a hole in the cover on the opposite side of its center from the lug D. The upper part at of this hole is recessed, and 6 represents finger-notches in the cover on opposite sides of the hole. The hole E and its recessed portion are preferably rectangular in shape.
F is a removable lug provided with a head f. This lug F is dropped through the hole E into engagement with the flange B, and its head f on ages with the recessed part (1 of the hole, in wliich it fits snugly. These two lugs prevent the cover from being accidentally displaced.
When the cover is to be raised, the removable lug F is first lifted out of the hole by the fingers, and the cover can then be raised by inserting a finger or a hook into the hole E.
What I claim is The combination, with a frame provided with a projecting flange, of a cover which rests on the said flange and which is provided on one side with a lug D which projects under the said flange, said cover having also at its other side a hole E having a rectangular recessed portion d and finger-notches e at the sides of the said recessed portion, and a removable lug F which is dropped loosely through the hole E into engagement with the said flange and which has a rectangular head which fits in the said recess d.
In testimony whereof I have affixed my signature in the presence of two witnesses.
ROBERT CAMERON.
4.. iLixJ
US23005704A 1904-10-26 1904-10-26 Manhole-cover. Expired - Lifetime US795687A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US23005704A US795687A (en) 1904-10-26 1904-10-26 Manhole-cover.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US23005704A US795687A (en) 1904-10-26 1904-10-26 Manhole-cover.

Publications (1)

Publication Number Publication Date
US795687A true US795687A (en) 1905-07-25

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Family Applications (1)

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US23005704A Expired - Lifetime US795687A (en) 1904-10-26 1904-10-26 Manhole-cover.

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3490637A (en) * 1968-06-24 1970-01-20 Robert M Pope Utility marker box
US3977124A (en) * 1974-04-19 1976-08-31 Pont-A-Mousson S.A. Man-hole assembly
US4000953A (en) * 1976-03-22 1977-01-04 Concrete Curb Inlets Co. Concrete catch basin with spring retained manhole cover
US4294049A (en) * 1979-01-16 1981-10-13 Marathon Oil Company Quick opening internal manway for towers

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3490637A (en) * 1968-06-24 1970-01-20 Robert M Pope Utility marker box
US3977124A (en) * 1974-04-19 1976-08-31 Pont-A-Mousson S.A. Man-hole assembly
US4000953A (en) * 1976-03-22 1977-01-04 Concrete Curb Inlets Co. Concrete catch basin with spring retained manhole cover
US4294049A (en) * 1979-01-16 1981-10-13 Marathon Oil Company Quick opening internal manway for towers

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