US814013A - Cover for road-manholes. - Google Patents

Cover for road-manholes. Download PDF

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Publication number
US814013A
US814013A US21501004A US1904215010A US814013A US 814013 A US814013 A US 814013A US 21501004 A US21501004 A US 21501004A US 1904215010 A US1904215010 A US 1904215010A US 814013 A US814013 A US 814013A
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United States
Prior art keywords
cover
frame
road
ring
manholes
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Expired - Lifetime
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US21501004A
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Fritz Baumann
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Individual
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Priority to US21501004A priority Critical patent/US814013A/en
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
    • E02D29/14—Covers for manholes or the like; Frames for covers
    • E02D29/1409—Covers for manholes or the like; Frames for covers adjustable in height or inclination

Definitions

  • igure 1 is a vertical section of a manhole with cover, the cover-ring being shown in its elevated position.
  • Fig. 2 is a plan of Fig. 1, the cover with its frame being removed.
  • Fig. 3 is a view showing the inside of a portion of the covcrframe, which is here assumed to be opened out fiat, and likewise a portion of the supporting-ring similarly extended.
  • the cover a may be of any ordinary construction and is carried by a frame I), resting on a ring d, located inside a frame e, which affords guidance to the cover-frame b.
  • the inner wall of the frame I is provided with steps b in well-known manner, while the ring (2' presents projections d, which in 006peration with the steps I) enable the coverframe I) to be adjusted in height.
  • the frame I When owing to the road metal being worn down the cover a is to be lowered, the frame I) should be slightly raised in any. suitable manner in order to relieve the ring d from its lead.
  • the ring (1 must now be turned into the desired position, whereupon the coverframe should be given a few blows to cause it to descend.
  • Its conical outer wall essentially facilitates the loosenin of any of the road metal which may be adhering to it.
  • a ti ht joint is effected between the frames 1) e y means of tarred rope c or like packing inserted in a groove in the lower portion of the frame 6, whereby dirt is revented from getting access to the shaft of the manhole.
  • a manhole-cover comprising a lid, a frame carrying the same and provided with steps on its inner wall, a uide-frame receiving the first-said frame, amv a ring located within the guide-frame and presentlng supports upon which the said stepped frame rests, substantially as described.

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  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)

Description

No. 814,013. PATENTED MAR. 6, 1906. P. BAUMANN.
COVER FOR ROAD MANHOLES. APPLICATION rILnn JULY 1, 1904.
4Z1 WIT/VESSES: MWEW T 0/1- UNITED STATES PATENT OFFICE.
Specification of Letters Patent.
ratenteu March 6, 1906.
Application filed July 1, 1904. Serial Ho. 215,010-
the road metal having to be taken up or disturbed.
In manhole-covers of the ordinary construction, comprising a cover-frame located with capability of vertical adg'ustment in a guide-frame, the inner wall 0 the latter is provided with stepped projections upon which the cover-frame, presenting similar steps, rests. When it is required to adjust the height of the cover-frame, the latter has to be turned. Since, however, the friction between the cover-frame and the well-rolled road metal is considerable, such rotary motion is seriously impeded, so that the metal must be broken up or loosened. According to my invention I overcome this inconvenience by dispensing with steps on the uideframe and providin a ring inside the atter for the urpose o supporting the coverframe. y rotating this supporting-ring the hei ht of the cover-frame can be adjusted without the road metal having to be disturbed, since the cover-frame merely requires to be moved in a direction vertical to its axis.
My invention is shown in the accompanyin drawings, in which' igure 1 is a vertical section of a manhole with cover, the cover-ring being shown in its elevated position. Fig. 2 is a plan of Fig. 1, the cover with its frame being removed. Fig. 3 is a view showing the inside of a portion of the covcrframe, which is here assumed to be opened out fiat, and likewise a portion of the supporting-ring similarly extended.
The cover a may be of any ordinary construction and is carried by a frame I), resting on a ring d, located inside a frame e, which affords guidance to the cover-frame b.
The inner wall of the frame I; is provided with steps b in well-known manner, while the ring (2' presents projections d, which in 006peration with the steps I) enable the coverframe I) to be adjusted in height.
When owing to the road metal being worn down the cover a is to be lowered, the frame I) should be slightly raised in any. suitable manner in order to relieve the ring d from its lead. The ring (1 must now be turned into the desired position, whereupon the coverframe should be given a few blows to cause it to descend. Its conical outer wall essentially facilitates the loosenin of any of the road metal which may be adhering to it. A ti ht joint is effected between the frames 1) e y means of tarred rope c or like packing inserted in a groove in the lower portion of the frame 6, whereby dirt is revented from getting access to the shaft of the manhole.
In event of the road being remade the cover and its frame 65 can be elevated again into its highest position.
Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is
A manhole-cover, comprising a lid, a frame carrying the same and provided with steps on its inner wall, a uide-frame receiving the first-said frame, amv a ring located within the guide-frame and presentlng supports upon which the said stepped frame rests, substantially as described.
In witness whereof I have hereunto signed my name, this 4th day of June, 1904, in the presence of two subscribin witnesses.
FRI Z BAUMANN.
lvitnesses K. GELBERT, llIICHAEL ZIMMERMANN.
US21501004A 1904-07-01 1904-07-01 Cover for road-manholes. Expired - Lifetime US814013A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US21501004A US814013A (en) 1904-07-01 1904-07-01 Cover for road-manholes.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US21501004A US814013A (en) 1904-07-01 1904-07-01 Cover for road-manholes.

Publications (1)

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US814013A true US814013A (en) 1906-03-06

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US21501004A Expired - Lifetime US814013A (en) 1904-07-01 1904-07-01 Cover for road-manholes.

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5205668A (en) * 1991-03-29 1993-04-27 At&T Bell Laboratories Manhole adapter
WO2002018713A1 (en) * 2000-09-01 2002-03-07 Precision Cover Systems Adjustable utility access device
US6435764B1 (en) 1999-09-16 2002-08-20 Mcneely P. Dennis Nondestructive system for adjusting manhole and catch-basin elevations
US6457901B1 (en) 2000-09-01 2002-10-01 Precision Cover Systems, Inc. Adjustable manhole apparatus
US6520713B2 (en) * 2001-03-22 2003-02-18 Precision Cover Systems, Inc. Height and angle adjustable utility access device and method
US6524026B2 (en) * 2001-03-22 2003-02-25 Precision Cover Systems, Inc. Adjustable height utility access device
US6955499B2 (en) 2000-09-01 2005-10-18 Precision Cover Systems, Inc. Adjustable utility access
US20190003186A1 (en) * 2016-02-15 2019-01-03 Seonghwan SEO Spacer for prefabricated spiral staircase and prefabricated spiral staircase using same

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5205668A (en) * 1991-03-29 1993-04-27 At&T Bell Laboratories Manhole adapter
US6435764B1 (en) 1999-09-16 2002-08-20 Mcneely P. Dennis Nondestructive system for adjusting manhole and catch-basin elevations
WO2002018713A1 (en) * 2000-09-01 2002-03-07 Precision Cover Systems Adjustable utility access device
US6457901B1 (en) 2000-09-01 2002-10-01 Precision Cover Systems, Inc. Adjustable manhole apparatus
US6955499B2 (en) 2000-09-01 2005-10-18 Precision Cover Systems, Inc. Adjustable utility access
US6520713B2 (en) * 2001-03-22 2003-02-18 Precision Cover Systems, Inc. Height and angle adjustable utility access device and method
US6524026B2 (en) * 2001-03-22 2003-02-25 Precision Cover Systems, Inc. Adjustable height utility access device
US20190003186A1 (en) * 2016-02-15 2019-01-03 Seonghwan SEO Spacer for prefabricated spiral staircase and prefabricated spiral staircase using same
US10407914B2 (en) * 2016-02-15 2019-09-10 Seonghwan SEO Spacer for prefabricated spiral staircase and prefabricated spiral staircase using same

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