US3726507A - Load binder - Google Patents

Load binder Download PDF

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Publication number
US3726507A
US3726507A US00151732A US3726507DA US3726507A US 3726507 A US3726507 A US 3726507A US 00151732 A US00151732 A US 00151732A US 3726507D A US3726507D A US 3726507DA US 3726507 A US3726507 A US 3726507A
Authority
US
United States
Prior art keywords
lever
pivot element
tie
thrust
tightened
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
US00151732A
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English (en)
Inventor
M Rymsza
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.)
Holland Co
MacLean Fogg Lock Nut Co
Original Assignee
MacLean Fogg Lock Nut Co
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 MacLean Fogg Lock Nut Co filed Critical MacLean Fogg Lock Nut Co
Application granted granted Critical
Publication of US3726507A publication Critical patent/US3726507A/en
Assigned to HOLLAND COMPANY, A CORP. OF ILLINOIS reassignment HOLLAND COMPANY, A CORP. OF ILLINOIS ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: MACLEAN-FOGG COMPANY
Anticipated expiration legal-status Critical
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
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G11/00—Means for fastening cables or ropes to one another or to other objects; Caps or sleeves for fixing on cables or ropes
    • F16G11/12—Connections or attachments, e.g. turnbuckles, adapted for straining of cables, ropes, or wire
    • 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
    • F16G3/00—Belt fastenings, e.g. for conveyor belts
    • F16G3/006—Traction devices to bring together belts, cables or chains
    • 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
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/14—Bale and package ties, hose clamps
    • Y10T24/1412—Bale and package ties, hose clamps with tighteners
    • Y10T24/1418—Self-locking [dead center or snap action]

Definitions

  • ABSTRACT A variable advantage force applying device is disclosed as applied to a load binder used to tighten a flexible fastener such as a rope, cable or chain around a load to hold the load against shifting on the bed of a carrier or to fasten a bundle of heavy objects together.
  • the device uses a lever pivoted to one end of the flexible fastener and connected to the other end of the fastener by a pin and slot.
  • the slot is curved and disposed to move the pin toward the pivot for the lever as the lever is swung in a tightening direction. As the pin moves closer to the pivot, it increases the mechanical advantage of the lever at the stage of the tightening operation during which the resistance to tightening increases.
  • An overcenter arrangement is incorporated in the pin and slot according to accepted design practice to hold the fastener in a tightened condition.
  • This invention relates to tightening devices for flexible fasteners such as ropes, cables, chains or the like and will be described for illustrative purposes as applied to load binders used to tighten a flexible fastener about a load on a carrier to keep the load from shifting.
  • Load binders as presently commercially available comprise a lever provided with two pivots at one end, one pivot being connected to one end of the flexible fastener and the other pivot being connected to the other end of the fastener or to an anchor on the carrier.
  • the two pivots are so related that as the load is tightened they pass one another and then pass over the line of thrust, i.e., over center to lock in the tightened position.
  • the load binders are tightened manually, and, obviously, the effort required to bring them to the locked, over-center position increases as that position is approached.
  • the operator may increase the mechanical advantage of the lever by providing a makeshift extension of the lever in the form of a pipe slipped over the end of the lever and extending beyond the lever to lengthen it. This renders the operator somewhat insensitive to the maximum allowable load for the binder, to the detriment of the binder, of the load being made secure and of the rope, chain or cable used as the fastening means.
  • a more specific object of this invention is the provision of a load binder which incorporates a variable mechanical advantage device as one of the the connections between the binder and the flexible fastening means, the device being arranged to increase the mechanical advantage of the manually operated lever of the binder as the binder approaches its maximum tightness, thereby reducing the effort put forth at that point over the effort previously required.
  • this invention has within its purview the provision of a simple and inexpensive pin-and-slot form of connection between the lever of a load binder and the fastening means to be tightened by it, said connection being so disposed as to function as a device for varying the mechanical advantage of the lever as the binder tightens the fastening means.
  • FIG. 1 is a plan view of the load binder of this invention shown in its extended or unloaded condition
  • FIG. 2 is a rear elevational view of a portion of the load binder of FIG. 1 looking in the direction of the line 2-2 of FIG. 1;
  • FIG. 3 is a front elevational view of the load binder of FIG. 1;
  • FIGS. 4, 5, 6 and 7 are fragmentary plan views of the mechanical advantage changing device forming part of the invention, the device being shown in various stages of operation.
  • the load binder of this invention differs from prior load binders in that one of the connections between the manually operated lever and the flexible fastener passing around the load is a pin-and-slot connection rather than a fixed pivot, the slot being curved so that as the lever is turned about its fixed pivot the pin moves in the slot inwardly toward the fixed pivot, thereby changing the effective moment arm to shorten it and thus create a progressively greater mechanical advantage for the lever which reaches a maximum just as the load binder passes dead center into a locking position.
  • the binder as shown in FIG. 1 is comprised of a lever 10 having an end 11 which functions as a handle to be grasped by the operator, and having a fixed pivot 12 near its other end.
  • a link 13 is connected to pivot 12 for free movement therearound, said link 13 being connected by a flexible connection such as another link 14 to a hook 15 adapted to engage one end 16 of a flexible tie element or fastener 17 such as a chain, cable or rope passing around a load (not shown).
  • the other end of flexible fastener 17 is shown at 18 engaging a hook 19 which may be similar to or identical with hook 15.
  • links 16 and 18 may be portions of separate fastening means the other ends of which are connected to anchors on the bed or wall of a carrier such as atruck, plane or freight car.
  • the means by which the hooks 15 and 19 are drawn toward one another comprise a flexible connection 20 similar to flexible connection 14, said connection 20 connecting hook 19 to a link 21, the free end of which is provided with a pin 22 appropriately retained within a curved slot 23 formed in that end of lever 10 which extends beyond fixed pivot 12.
  • link 13 may be a clevis which straddles lever 10.
  • Link 21 is in the form of a tongue which passes into a longitudinal groove 24 formed in the end of lever 10 and intersecting slot 23, said slot 23 extending on both sides of groove 24 and providing spaced bearing surfaces for pin 22.
  • slot 23 is curved and extends in a general radial direction with respect to fixed pivot 12.
  • the line of thrust between hooks l5 and 19 passes through a plane which is perpendicular to the plane of FIG. 3 and is symmetrically disposed with respect to the sides of clevis l3 and tongue 21.
  • handle 11 is swung clockwise as shown in FIGS. 4-7 about pivot 12 through somewhat less than from a position in which lever 10 abuts the top of the clevis 13 to a position wherein lever 10 is substantially parallel to and below tongue 21.
  • the tightened position is shown in FIG. 7 and the intermediate stages are shown in FIGS. 4, 5 and 6.
  • the effective moment arm for the binder is the longest when the elements of the binder bear the relation to one another depicted in that FIG.
  • the moment arm is shown by the arrow 26.
  • lever 10 has been swung through approximately 45 from the relaxed position shown in FIG. 1 and because of the curvature of slot 23, pin 22 has slid a short distance from its end position.
  • lever 10 has been swung approximately another 5 to degrees and again, due to the curvature of slot 23, pin 22 has slid approximately through the mid point in slot 23. This has still further shortened the effective moment arm as shown by the arrow 27.
  • lever 10 has been swung as far as it is possible in a clockwise direction, and in the process, the line of thrust between hooks and 19 has passed through fixed pivot 12 and the binder now is in an over-center position which locks lever 10 in its left-hand position as shown in FIG. 7.
  • variable mechanical advantage device of this invention that is, the pin-and-slot connection between lever 10 and link 21
  • the force required to be exerted by the operator on lever 10 is reduced as the fastener is tightened as compared with the force that would be required were a fixed pivot used in place of the pin-an'd-slot connection as is commonly done in the prior art load binders.
  • This decreased force makes the load binder easier to operate and hence reduces or eliminates entirely the need for the use of extensions on handle 11 such as the types previously resorted to by load binder operators.
  • the pin-and-slot connection is relatively inexpensive to make, it is sturdy and requires no additional or new procedure for the operation of the binder.
  • the curved slot provides stability to the binder as the lever 10 is swung for either tightening or loosening the binding force.
  • Pin 22 always seeks the position in the slot at which a tangent to the concave curvature of the surface of the slot is at right angles to the line of thrust through the pin. The movement of pin 22 is automatic in response to the change in the location of the line of thrust.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Clamps And Clips (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
US00151732A 1971-06-10 1971-06-10 Load binder Expired - Lifetime US3726507A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US15173271A 1971-06-10 1971-06-10

Publications (1)

Publication Number Publication Date
US3726507A true US3726507A (en) 1973-04-10

Family

ID=22540023

Family Applications (1)

Application Number Title Priority Date Filing Date
US00151732A Expired - Lifetime US3726507A (en) 1971-06-10 1971-06-10 Load binder

Country Status (10)

Country Link
US (1) US3726507A (US20070244113A1-20071018-C00087.png)
JP (1) JPS501200B1 (US20070244113A1-20071018-C00087.png)
AU (1) AU474338B2 (US20070244113A1-20071018-C00087.png)
CA (1) CA938838A (US20070244113A1-20071018-C00087.png)
DE (1) DE2220550C3 (US20070244113A1-20071018-C00087.png)
ES (1) ES402416A1 (US20070244113A1-20071018-C00087.png)
FR (1) FR2140392A1 (US20070244113A1-20071018-C00087.png)
GB (1) GB1335362A (US20070244113A1-20071018-C00087.png)
IT (1) IT958562B (US20070244113A1-20071018-C00087.png)
ZA (1) ZA722577B (US20070244113A1-20071018-C00087.png)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3826469A (en) * 1971-10-07 1974-07-30 R Ratcliff Over-center load binder with variable mechanical advantage
US3842426A (en) * 1973-02-05 1974-10-15 R Ratcliff Latching over-center type load binder
US3907254A (en) * 1973-03-22 1975-09-23 Thomas J Richards Lifting apparatus
US4366607A (en) * 1980-10-02 1983-01-04 Dominion Chain Inc. Overcenter tensioning engagement and release device
US4512062A (en) * 1982-03-11 1985-04-23 The Crosby Group, Inc. Load binder handle and extension therefor
US4800627A (en) * 1987-04-16 1989-01-31 Durbin-Durco, Inc. Load binder and method of making same
US4977646A (en) * 1990-01-30 1990-12-18 Columbus Mckinnon Corporation Cam assisted load binder
USD772032S1 (en) * 2014-05-09 2016-11-22 Durabilt Mfg. Inc. Ratchet binder
USD915850S1 (en) 2019-05-08 2021-04-13 Thomas Joseph Durbin Ratchet binder
USD917253S1 (en) 2019-10-22 2021-04-27 Thomas Joseph Durbin Ratchet binder
USD917252S1 (en) 2019-10-22 2021-04-27 Thomas Joseph Durbin Ratchet binder

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2807539C2 (de) * 1978-02-22 1983-12-15 Waggon Union Gmbh, 1000 Berlin Und 5900 Siegen Spanneinrichtung für Ladegut auf Fahrzeugen
JPS6167615U (US20070244113A1-20071018-C00087.png) * 1984-10-09 1986-05-09
GB2296057B (en) * 1994-12-16 1997-04-30 Patrick Robert William Knox Line connector and tensioner
DE102014111699B3 (de) * 2014-08-15 2015-11-26 Friatec Aktiengesellschaft Anbohrarmatur

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1523565A (en) * 1923-05-24 1925-01-20 John H Smith Chain tightener
US1802689A (en) * 1928-07-13 1931-04-28 Luther H Wenrich Tire-chain tightener
US2422001A (en) * 1946-01-04 1947-06-10 Votaw S Durbin Construction of load binders

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1523565A (en) * 1923-05-24 1925-01-20 John H Smith Chain tightener
US1802689A (en) * 1928-07-13 1931-04-28 Luther H Wenrich Tire-chain tightener
US2422001A (en) * 1946-01-04 1947-06-10 Votaw S Durbin Construction of load binders

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3826469A (en) * 1971-10-07 1974-07-30 R Ratcliff Over-center load binder with variable mechanical advantage
US3842426A (en) * 1973-02-05 1974-10-15 R Ratcliff Latching over-center type load binder
US3907254A (en) * 1973-03-22 1975-09-23 Thomas J Richards Lifting apparatus
US4366607A (en) * 1980-10-02 1983-01-04 Dominion Chain Inc. Overcenter tensioning engagement and release device
US4512062A (en) * 1982-03-11 1985-04-23 The Crosby Group, Inc. Load binder handle and extension therefor
US4800627A (en) * 1987-04-16 1989-01-31 Durbin-Durco, Inc. Load binder and method of making same
US4977646A (en) * 1990-01-30 1990-12-18 Columbus Mckinnon Corporation Cam assisted load binder
USD772032S1 (en) * 2014-05-09 2016-11-22 Durabilt Mfg. Inc. Ratchet binder
USD915850S1 (en) 2019-05-08 2021-04-13 Thomas Joseph Durbin Ratchet binder
USD917253S1 (en) 2019-10-22 2021-04-27 Thomas Joseph Durbin Ratchet binder
USD917252S1 (en) 2019-10-22 2021-04-27 Thomas Joseph Durbin Ratchet binder

Also Published As

Publication number Publication date
FR2140392A1 (US20070244113A1-20071018-C00087.png) 1973-01-19
ES402416A1 (es) 1975-04-01
ZA722577B (en) 1973-01-31
CA938838A (en) 1973-12-25
JPS501200B1 (US20070244113A1-20071018-C00087.png) 1975-01-16
DE2220550C3 (de) 1978-06-29
GB1335362A (en) 1973-10-24
AU474338B2 (en) 1976-07-22
IT958562B (it) 1973-10-30
AU4171772A (en) 1973-11-08
DE2220550A1 (de) 1972-12-28
DE2220550B2 (de) 1977-11-10

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Legal Events

Date Code Title Description
AS Assignment

Owner name: HOLLAND COMPANY, A CORP. OF ILLINOIS,ILLINOIS

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:MACLEAN-FOGG COMPANY;REEL/FRAME:004702/0845

Effective date: 19870410

Owner name: HOLLAND COMPANY, 1020 WASHINGTON AVENUE, CHICAGO H

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:MACLEAN-FOGG COMPANY;REEL/FRAME:004702/0845

Effective date: 19870410