US3810359A - Load chain loose end stop - Google Patents
Load chain loose end stop Download PDFInfo
- Publication number
- US3810359A US3810359A US00323695A US32369573A US3810359A US 3810359 A US3810359 A US 3810359A US 00323695 A US00323695 A US 00323695A US 32369573 A US32369573 A US 32369573A US 3810359 A US3810359 A US 3810359A
- Authority
- US
- United States
- Prior art keywords
- link
- chain
- last link
- opening
- last
- 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
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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
- F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16G13/00—Chains
-
- 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
- F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16G17/00—Hooks as integral parts of chains
Definitions
- the end stop includes a standard chain end link held sidewise or' horizontally within the next to the last or vertically disposedlink of the load chain by legs of a pull link; the pull link servingto define a convenient finger grip to facilitate manual pulling down on the loose end of the load chain.
- Thepresent invention relates to an improved end stop for preventing the loose end of a load chain from running through a hoist of the type having a guide device defining an opening for controlling passage of the chain through the hoist with the chain links in an end to end relationship.
- a pull link is fixed to the last link of an elongated link type load chain so as to maintain the last chain link in a sidewise or hotizontal position within the next to the last or vertical link of the load chain.
- the ends of the last link are thereby arranged to engage with the surface of the guide device adjacent the guide opening in order to prevent passage of the loose end of the chain therethrough.
- the pull link additionally defines a loop to facilitate manual pulling down on the loose end of the load chain.
- Advantages of the present end stop are that no welding operation is required to attach the pull link to the loose end of the chain; that the pull link may be of relatively light weight, low cost construction and designed to. facilitate gripping by the hoist operator, since the last link of the chain serves as the pull-through stop element and does not require any separate assembly operation; and that there is no possibility of the end stop becoming wedged in the chain'guide of the hoist. Moreover, advantage is taken of the fact that the last link of the chain, which is used as the through stop element, is of high strength material and when of welded continuous construction willnot pull apart or separate from the remainder of the chain under repeated loadin gs, thereby to provide for safety of operation.
- FIG. 4 is a fragmentary-sectional view taken generally along line 4-4 of FIG. 3.
- load chain 12 is shown as having standard, uniformly sized, welded links 18 interfitted within openings 20 of adjacent links.
- each opening 20 has a width w, which is normally slightly in excess of the diameter D of the stock material from which the links are formed and a length l, which is normally slightly less than three times the link diameter D.
- the overall length L of each link is substantially in excess of its width W.
- hoist 14 is shown as generally including a hoist body 22, which encloses a chain link engaging sheave, not shown; a chain guide 24, which is formed with guide openings designated as 26 only in FIGS. 2 and 4 for guiding chain 12 into and out of running engagement with the sheave; and a manually manipulatable handle 28 for controlling load chain translating rotations of the sheave.
- Guide openings 26 are normally of clover-leaf shape configuration, as best shown in FIG. 4, and have maximum opening dimensions W, which are intermediate the values of chain link dimensions W and L. Thus, guide openings 26 serve to constrain passage of links 18 therethrough unless they are arranged in lengthwise or end to end relationship and adjacent links are disposed in an essentially perpendicular relationship.
- End stop 10 is shown in FIGS. l-3 as including a pull link 30, which is fixed to a last or end link 18a of the loose end 'portion of chain 12 in order to maintain same in a sidewise or horizontal position relative to the next to last vertically disposed link 1812.
- Pull link 30 includes an enlarged looped intermediate portion 32, which is integrally formed with a pair of essentially parallel legs 34 and 34'. Looped upper portions 34a and 34a oflegs 34 and 34' extend outwardly from the plane of loop portion 32 and pass through the opening 20a of end link 18a to lie adjacent opposite sides of the next to last link 18b.
- Upper portions 34a and 34a terminate in free end portions 34b and 34b, which are spaced from legs 34 and 34' a distance less than link diameter D in order to retain link 18a locked within leg portions 34a and 34a.
- the stock material from which pull link 30 is formed is less than about one diameter D in order to permit receipt of both leg portions 34a and 34a and next to last link 1812 within link opening 20a.
- loop portion 32 provides a convenient finger grip for the operator of the hoist when desired to manually raise lift hook 16.
- end stop 10 normally extends from' link 18a only in a direction away from link 18!), such that it does not itself engage guide 24 or interfere with the engagement of such guide by link 18a.
- pull link 30 is attached to the standard end link of the load chain such that the end link is incorporated as an integral part of the end stop
- a composite end stop unit including a standard chain link which would then be attached to the loose end of a load chain in a desired manner.
- This latter embodiment may well be preferred when the standard end link must be formed of a different metal from that employed in forming the load chain for any reason, such as to withstand repeated engagements with the chain guide of the hoist without deformation.
- the present end stop possesses utility for nonhoist applications where it is desirable to prevent running through of a link chain.
- a guide having an opening for controlling passage of an elongated link type chain through said device such that adjacent links of said chain are arranged end to end and in an essentially perpendicular relationship, and an end stop for preventing an end of said chain from running inwardly through said guide opening, the improvement wherein said end stop includes:
- said means locked to said last link additionally defines a pull portion manually operable by an operator of said device to facilitate pulling of said end of said chain outwardly through said opening.
- said means fixed to said last link includes an intermediate portion having a pair of leg portions extending therefrom, said leg portions extending through said last link adjacent opposite sides of said next to last link and being looped to lock said last link therewithin, and said intermediate portion defining a pull loop for receiving the fingers of an operator of said device to facilitate pulling of said end of said chain outwardly through said opening.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Load-Engaging Elements For Cranes (AREA)
Abstract
Description
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00323695A US3810359A (en) | 1973-01-15 | 1973-01-15 | Load chain loose end stop |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00323695A US3810359A (en) | 1973-01-15 | 1973-01-15 | Load chain loose end stop |
Publications (1)
Publication Number | Publication Date |
---|---|
US3810359A true US3810359A (en) | 1974-05-14 |
Family
ID=23260337
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00323695A Expired - Lifetime US3810359A (en) | 1973-01-15 | 1973-01-15 | Load chain loose end stop |
Country Status (1)
Country | Link |
---|---|
US (1) | US3810359A (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3975003A (en) * | 1973-11-19 | 1976-08-17 | Buford Wesley E | Torch type pipe cutter |
WO1980000871A1 (en) * | 1978-10-27 | 1980-05-01 | J Hallen | Suspension attachment for elongated armatures |
US4235074A (en) * | 1979-06-13 | 1980-11-25 | Eaton Corporation | Load chain end stop |
US4244683A (en) * | 1979-09-20 | 1981-01-13 | Reflexite Corporation | Apparatus for compression molding of retroreflective sheeting |
US4398387A (en) * | 1982-03-08 | 1983-08-16 | Columbus Mckinnon Corporation | Chain travel stop |
US6817595B1 (en) * | 2002-02-05 | 2004-11-16 | Fmc Technologies, Inc. | Swing arm chain support method |
CN100404407C (en) * | 2003-03-31 | 2008-07-23 | 弗雷诺林克·福瓦尔廷斯股份公司 | A chain shortening device |
US9228375B1 (en) | 2014-10-29 | 2016-01-05 | Mandex, Inc. | Lock for a chain |
US20160280333A1 (en) * | 2013-11-15 | 2016-09-29 | Dcns | Fairlead for guiding an anchoring element |
US9475679B2 (en) * | 2014-09-09 | 2016-10-25 | Konecranes Global Corporation | Chain hoist |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1458354A (en) * | 1922-06-30 | 1923-06-12 | Louden Machinery Co | Guide for hoisting wheels |
US2658722A (en) * | 1950-03-09 | 1953-11-10 | Coffing Hoist Company | Automatic hoist and binder |
US2773668A (en) * | 1954-01-05 | 1956-12-11 | Columbus Mckinnon Chain Corp | Hoist chain guide and stripper |
US3282045A (en) * | 1963-03-09 | 1966-11-01 | Thelan Yves | Means for an eye-link for chains |
-
1973
- 1973-01-15 US US00323695A patent/US3810359A/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1458354A (en) * | 1922-06-30 | 1923-06-12 | Louden Machinery Co | Guide for hoisting wheels |
US2658722A (en) * | 1950-03-09 | 1953-11-10 | Coffing Hoist Company | Automatic hoist and binder |
US2773668A (en) * | 1954-01-05 | 1956-12-11 | Columbus Mckinnon Chain Corp | Hoist chain guide and stripper |
US3282045A (en) * | 1963-03-09 | 1966-11-01 | Thelan Yves | Means for an eye-link for chains |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3975003A (en) * | 1973-11-19 | 1976-08-17 | Buford Wesley E | Torch type pipe cutter |
WO1980000871A1 (en) * | 1978-10-27 | 1980-05-01 | J Hallen | Suspension attachment for elongated armatures |
US4235074A (en) * | 1979-06-13 | 1980-11-25 | Eaton Corporation | Load chain end stop |
US4244683A (en) * | 1979-09-20 | 1981-01-13 | Reflexite Corporation | Apparatus for compression molding of retroreflective sheeting |
US4398387A (en) * | 1982-03-08 | 1983-08-16 | Columbus Mckinnon Corporation | Chain travel stop |
US6817595B1 (en) * | 2002-02-05 | 2004-11-16 | Fmc Technologies, Inc. | Swing arm chain support method |
CN100404407C (en) * | 2003-03-31 | 2008-07-23 | 弗雷诺林克·福瓦尔廷斯股份公司 | A chain shortening device |
US20160280333A1 (en) * | 2013-11-15 | 2016-09-29 | Dcns | Fairlead for guiding an anchoring element |
US9975606B2 (en) * | 2013-11-15 | 2018-05-22 | Dcns | Fairlead for guiding an anchoring element |
US9475679B2 (en) * | 2014-09-09 | 2016-10-25 | Konecranes Global Corporation | Chain hoist |
US9228375B1 (en) | 2014-10-29 | 2016-01-05 | Mandex, Inc. | Lock for a chain |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: SECURITY PACIFIC BUSINESS CREDIT INC., 1100 SUPERI Free format text: SECURITY INTEREST;ASSIGNOR:SOLUMBU MCKINNON CORPORATION, A CORP. OF NY;REEL/FRAME:004725/0001 Effective date: 19861223 |
|
AS | Assignment |
Owner name: GLENFED FINANCIAL CORPORATION, 104 CARNEGIE CENTER Free format text: SECURITY INTEREST;ASSIGNOR:COLUMBUS MCKINNON CORPORATION;REEL/FRAME:004760/0805 Effective date: 19861223 Owner name: GLENFED FINANCIAL CORPORATION,NEW JERSEY Free format text: SECURITY INTEREST;ASSIGNOR:COLUMBUS MCKINNON CORPORATION;REEL/FRAME:004760/0805 Effective date: 19861223 |
|
AS | Assignment |
Owner name: NORSTAR BANK, NATIONAL ASSOCIATION, NORSTAR BLDG., Free format text: SECURITY INTEREST;ASSIGNOR:COLUMBUS MCKINNON CORPORATION, A NY CORP.;REEL/FRAME:004777/0746 Effective date: 19861223 Owner name: NORSTAR BANK, NATIONAL ASSOCIATION,NEW YORK Free format text: SECURITY INTEREST;ASSIGNOR:COLUMBUS MCKINNON CORPORATION, A NY CORP.;REEL/FRAME:004777/0746 Effective date: 19861223 |
|
AS | Assignment |
Owner name: COLUMBUS MCKINNON CORPORATION, NEW YORK Free format text: PATENT RELEASE;ASSIGNOR:GLENFED FINANCIAL CORPORATION;REEL/FRAME:008186/0884 Effective date: 19961008 Owner name: COLUMBUS MCKINNON CORPORATION, NEW YORK Free format text: PATENT RELEASE;ASSIGNOR:BANK AMERICAN BUSINESS CREDIT, INC. AS SUCCESSOR TO SECURITY PACIFIC BUSINESS CREDIT INC.;REEL/FRAME:008186/0899 Effective date: 19961004 Owner name: COLUMBUS MCKINNON CORPORATION, NEW YORK Free format text: RELEASE AND TERMINATION OF COLLATERAL PATENT AND T;ASSIGNOR:FLEET BANK (FORMERLY KNOWN AS NORSTAR BANK, NATIONAL ASSOCIATION);REEL/FRAME:008194/0270 Effective date: 19961011 |