US781080A - Hand-hole covering. - Google Patents

Hand-hole covering. Download PDF

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Publication number
US781080A
US781080A US1904231643A US781080A US 781080 A US781080 A US 781080A US 1904231643 A US1904231643 A US 1904231643A US 781080 A US781080 A US 781080A
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United States
Prior art keywords
hand
pipe
hole
plate
covering
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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
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Inventor
Arthur C Lynch
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Arthur C Lynch
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Application filed by Arthur C Lynch filed Critical Arthur C Lynch
Priority to US1904231643 priority Critical patent/US781080A/en
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Publication of US781080A publication Critical patent/US781080A/en
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Expired - Lifetime legal-status Critical Current

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L45/00Pipe units with cleaning aperture and closure therefor
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T292/00Closure fasteners
    • Y10T292/23Cross bars
    • Y10T292/237Screw-operating means
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T292/00Closure fasteners
    • Y10T292/28Extension link
    • Y10T292/283Chain

Description

No. 781,080. I PATENTED JAN. 31, 1 905. A. ,0. LYNGIL HAND HOLE COVERING.

APPLIOATIOH IILI'ID NOV. 7, 1904.

UNITED STATES Patented January 31, 1905.

PATENT OFFICE.

- ARTHUR o. LYNCH, or RICHMOND HILL, NEW YORK;

HAND-HOLE COVERING;

SPECIFICATION forming part of Letters Patent No. 781,080, datedanuary 31, 1905.

Application filed ll'ove mher '7, 1904. Serial No. 231,643. I i 4 To all whom it may concern:

Be it known that I, ARTHUR C. LYNoH, a citizen of the United States, residing at Richmond Hill, county of Queens, State of New York, (whose post-office address is the same,) have invented certain new and useful Improvements in Hand-HoleGoveririgd of which the following is a full, clear, and concise specification.

This invention relates to hand-hole covers for pipes, and more particularly to coverings of cheap and durable structure, simple and convenient in operation, which will form substantially leak-tight joints with the pipe or pipe-section to which they are applied.

Referring to the accompanying drawings, forming a part hereof, Figure 1 is a side elevation of a device embodying my invention, and Fig. 2 is a transverse sectional elevation of the same on the line a a. I

The reference-numeral 1 indicates a section of a cylindrical pipe provided with an aperture or hand-hole 2, which is shown as rectangular, but may of course be of other shapes.

The covering consists of a plate 3, curved concentrically with the pipe-section and provided on its straight sides with upturned flanges 4:. The latter members serve to provide convenient seats for the clamping means about to be described; but with the construction shown in the drawings, in which the plate is formed of sheet metal, they subserve the reinforcement or stiffening of the same, so that the pressure of the said clamping means is distributed more evenly throughout the area of contact between the covering-plate and the margin of the hand-hole. A gasket or packing of'felt or other suitable material is disposed between the plate and the margin of the hand-hole, this packing being permanently attached to the plate, so that it will not be disturbed by operations carried on through the hole. V

The clamping means consists of a strap,

' chain, or other flexible connection 5, attached atone end to an ear or hook 6, riveted'to the pipe, as shown in Fig. 2, and -removably connected at its other end with an open-slotted ear 7, similarly'riveted to the pipe. This strap or chain passes over the plate 3,"being seated and held thereon by reason of its location within the notches 8, and the adjustable connection is formed by means of a link 9, having a threaded shank and thumb-nut held by the ear 7. With this construction it will be apparent that the chain may be readily loosened and disconnected from the ear 7 and, if need be, removed entirely from the pipe by disengaging it from the hook 6. The notches 8 above mentioned are preferably of such depth that the chain will also have a bearing upon the central portion of the plate between the flanges.

Having described my invention, ,what I claim, and desire to secure by United States Letters Patent, is-

1: The combination of a cylindrical pipe or pipe-section having ahand-hole opening therein, a concentrically-curved plate covering said opening, a notched flange on said plate, and an adjustable binding-strap seated in said notch and attached at each side thereof to the pipesection, substantially as described.

2. The combination of a cylindrical pipe or pipe-section having a hand-hole opening therein, a concentrically-curved sheet-metal plate covering said hand-hole and provided with upturned flanges on its straight edges, and an adjustable binding-strap crossing said flanges and secured on opposite sides thereof to the pipe-section, substantiallyas described.

3. The combination of a cylindrical pipe or pipe-section having a hand-hole opening therein, a concentrically-curved sheet-metal plate covering said'hand-hole and provided with up turned flanges on its straight edges, ears disposed upon said pipe-section on opposite sides of said plate, and a binding-strap secured to one of said ears and having adjustable'and removable connection With the other, substantially as described.

In testimony whereofI have signed my name to the specificatioh in the presence of two sub scribing witnesses.

ARTHUR Q. LYNCH.

US1904231643 1904-11-07 1904-11-07 Hand-hole covering. Expired - Lifetime US781080A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US1904231643 US781080A (en) 1904-11-07 1904-11-07 Hand-hole covering.

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Application Number Priority Date Filing Date Title
US1904231643 US781080A (en) 1904-11-07 1904-11-07 Hand-hole covering.

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US781080A true US781080A (en) 1905-01-31

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US1904231643 Expired - Lifetime US781080A (en) 1904-11-07 1904-11-07 Hand-hole covering.

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2634019A (en) * 1949-06-10 1953-04-07 Koppers Co Inc Gas purifier box construction
US2695725A (en) * 1951-01-08 1954-11-30 Henry B Chatfield Access plate
US3624794A (en) * 1968-12-17 1971-11-30 Irl Daffin Associates Inspection means for concrete-handling system
US4341041A (en) * 1980-03-21 1982-07-27 Steetley Engineering Limited Explosion relief means
WO1989005418A1 (en) * 1987-12-07 1989-06-15 Vilho Hinkkanen A form part for a ventilation ductwork system
US20050205134A1 (en) * 2004-03-19 2005-09-22 Conbraco Industries Inc. Valve housing, cover, seal and method
US9016506B1 (en) 2012-05-09 2015-04-28 Lockable Solutions LLC Locking lid assembly for containers

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2634019A (en) * 1949-06-10 1953-04-07 Koppers Co Inc Gas purifier box construction
US2695725A (en) * 1951-01-08 1954-11-30 Henry B Chatfield Access plate
US3624794A (en) * 1968-12-17 1971-11-30 Irl Daffin Associates Inspection means for concrete-handling system
US4341041A (en) * 1980-03-21 1982-07-27 Steetley Engineering Limited Explosion relief means
WO1989005418A1 (en) * 1987-12-07 1989-06-15 Vilho Hinkkanen A form part for a ventilation ductwork system
US20050205134A1 (en) * 2004-03-19 2005-09-22 Conbraco Industries Inc. Valve housing, cover, seal and method
US9016506B1 (en) 2012-05-09 2015-04-28 Lockable Solutions LLC Locking lid assembly for containers

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