US1411549A - Guard for hooks - Google Patents
Guard for hooks Download PDFInfo
- Publication number
- US1411549A US1411549A US446633A US44663321A US1411549A US 1411549 A US1411549 A US 1411549A US 446633 A US446633 A US 446633A US 44663321 A US44663321 A US 44663321A US 1411549 A US1411549 A US 1411549A
- Authority
- US
- United States
- Prior art keywords
- hook
- guard
- latch
- hooks
- opening
- 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
Links
- 230000015572 biosynthetic process Effects 0.000 description 2
- 241000537377 Fraxinus berlandieriana Species 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/22—Rigid members, e.g. L-shaped members, with parts engaging the under surface of the loads; Crane hooks
- B66C1/34—Crane hooks
- B66C1/36—Crane hooks with means, e.g. spring-biased detents, for preventing inadvertent disengagement of loads
-
- 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
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B45/00—Hooks; Eyes
- F16B45/02—Hooks with pivoting or elastically bending closing member
- F16B45/023—Hooks with pivoting or elastically bending closing member the closing member pivoting about an axis perpendicular to the plane of the hook
-
- 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
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B45/00—Hooks; Eyes
- F16B45/02—Hooks with pivoting or elastically bending closing member
- F16B45/024—Hooks with pivoting or elastically bending closing member and having means biasing the closing member about the pivot
- F16B45/026—Hooks with pivoting or elastically bending closing member and having means biasing the closing member about the pivot and including a coil type spring
-
- 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
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B45/00—Hooks; Eyes
- F16B45/02—Hooks with pivoting or elastically bending closing member
- F16B45/027—Hooks with pivoting or elastically bending closing member and having position-locking means for the closing member
-
- 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.
- Y10T24/45—Separable-fastener or required component thereof [e.g., projection and cavity to complete interlock]
- Y10T24/45225—Separable-fastener or required component thereof [e.g., projection and cavity to complete interlock] including member having distinct formations and mating member selectively interlocking therewith
- Y10T24/45272—Projection passes through cavity then moves toward noninserted portion of its member to complete interlock [e.g., snap hook]
- Y10T24/45288—Hook type projection member
- Y10T24/45304—Noninserted portion of projection member includes movably connected gate for closing access throat
- Y10T24/45319—Pivotally connected gate
- Y10T24/45335—Pivotally connected gate having means biasing gate about pivot
- Y10T24/45346—Includes distinct biasing spring
- Y10T24/45351—Coil type spring
- Y10T24/45356—Coiled about pivotal axis of gate
-
- 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.
- Y10T24/45—Separable-fastener or required component thereof [e.g., projection and cavity to complete interlock]
- Y10T24/45225—Separable-fastener or required component thereof [e.g., projection and cavity to complete interlock] including member having distinct formations and mating member selectively interlocking therewith
- Y10T24/45272—Projection passes through cavity then moves toward noninserted portion of its member to complete interlock [e.g., snap hook]
- Y10T24/45288—Hook type projection member
- Y10T24/45304—Noninserted portion of projection member includes movably connected gate for closing access throat
- Y10T24/45319—Pivotally connected gate
- Y10T24/45361—Pivotally connected gate having position locking-means for gate
- Y10T24/45372—Locking-means slidably mounted
Definitions
- This invention relates to guards for hooks of the type frequently employed on cranes, derricks and the like for lifting heavy objects.
- the object of the invention is to provide a guard which will prevent the accidental disengagement from the hook, of the object engaged therewith, such, for example, as the link of a chain, a loop in a rope or any other element which supports the object to be lifted.
- FIG. 5 designates a" hook which is of a usual andknown formation except that it has a transverse opening 6 formed therethrough adjacent the point thereof.
- the guard comprises a yoke consisting of the side bars 7 and 8 pivotally connected to the body of the hook 5 by a bolt 9.
- coil spring 10 is connected with the yoke as at 11 and has a bight portion 12 engaged in a slot 13 formed in the body of the hook and this spring tends to throw the guard to the dotted line position illustrated in the drawing.
- the side bars 7 and 8 are united by a block 1 1 at their outer ends and this block is recessed at 15 for the reception of a spring 16 which surrounds latch 17.
- Thisv spring bears between a pin 18 carried by the latch and a plug .19 which is threaded into the outer end of the recess 15 and through which the latch 17 slides.
- the latch 17 is provided with a finger grasp or head 20 upon its outer end by which it may be-drawn outwardly against the tension of the spring 16 to release'the latch from the opening 6.
- the lower face of the latch is rounded at 21 to adapt it to coact with the rounded end 22 of the hook to force the latch. 17 outwardly,
- a lifting hook having an opening therein adjacent its point and extending from the outer face of said point inwardly, a guard pivoted for swinging movement to the body'of the hook substantially opposite said point and comprising a yokeadapted to embrace the point of the hook, a spring actuated latch operable longitudinally of the yoke and adapted to snap into the openingof the hook and means tending to throw said yoke upwardly, saidyoke straddling the body of the hook and lying entirely outside of the throat thereof when in its upper position.
Description
F. E. ABBOTT. GUARD FOR HOOKS- APPLICATION FILED FEB. 2|. 192 1- Patented Apr. 4, 1922.
/ RAN/f [T 2955077;
attain/e 1 s w ww UNITED STATES FRANK E. ABBOTT, or coanmeiig camronma.
GUARD r03 nooks.
Specification of Letters I atent.
latontcd Apr. 4, 1922.
Application filed. February -21, 1921. Serial No. 446,633.
7'0 all whom it may concern:
Be it known that I, FRANK E. ABBOTT, a citizen of the United States, residing at Coalinga, in the county of Fresno and State of California, have invented certain new and useful Improvements in Guards for Hooks, of which the following is a specification, reference being had therein to the accompanying drawings.
This invention relates to guards for hooks of the type frequently employed on cranes, derricks and the like for lifting heavy objects. The object of the invention is to provide a guard which will prevent the accidental disengagement from the hook, of the object engaged therewith, such, for example, as the link of a chain, a loop in a rope or any other element which supports the object to be lifted.
Further objects and advantages of the invention will be set forth in the detailed description which follows.
The figure shown in the accompanying drawing is a side elevation of a hook having the invention applied thereto with certain of the parts in section.
Referring to the drawing 5 designates a" hook which is of a usual andknown formation except that it has a transverse opening 6 formed therethrough adjacent the point thereof.
The guard comprises a yoke consisting of the side bars 7 and 8 pivotally connected to the body of the hook 5 by a bolt 9. A
when the yoke is swung downwardly. Whenv this downward movement has continued far enough, the latch will snapinto the openmg 6.
Among the advantages present in this structure over any otherdevice of this nature with which I am familiar are these:
First: The parts are so related that when the guard is swung to. the dotted line position shown in the drawing, the mouth or throat of the hook is entirely unobstructed and the chain link or other element to be engaged with the hook may be freely entered into the opening of the hook without contact with or interference by the guard Second: All of the latch mechanism is carried by the guard, none of it is carried by the nose of the hook. The hook is of the usual formation except for the presence of the opening 6; consequently there is no possibility that any of the latch mechanism will 3e battered out of shape by accidental engagement with heavy chain links or the like. Theinclination of the point ofthe hook is such that the entrance to the opening 6 is protected and thus the part of the opening with which the latch 17 engages is main tained in good condition...
It is to be understood that the invention 1 is not limited to the precise construction set forth but that it includes within its purview whatever changes fairly come within either the terms or the spirit of the appended claims.
Having described my invention, what I claim is: j
1. A lifting hook having an opening therein adjacent its point and extending from the outer face of said point inwardly, a guard pivoted for swinging movement to the body'of the hook substantially opposite said point and comprising a yokeadapted to embrace the point of the hook, a spring actuated latch operable longitudinally of the yoke and adapted to snap into the openingof the hook and means tending to throw said yoke upwardly, saidyoke straddling the body of the hook and lying entirely outside of the throat thereof when in its upper position.
2. In combination with a lifting hook having an opening formed therein adjacent its point and extending from its outer face in:
sisting of a pair of sidebars and atransversefolement, saifl yoke straddling saiii hook and being pivoted thereto at the rear side of the hook and ate point substantially opand ten vated position and a s ri ng a ctuet ed latch movable longitudinll-il member and adapted to srii i into the open- 10 in of the hook. I
linteetimony whemoi I hereunto afiix my signature.
FRANK E. ABBOTT.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US446633A US1411549A (en) | 1921-02-21 | 1921-02-21 | Guard for hooks |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US446633A US1411549A (en) | 1921-02-21 | 1921-02-21 | Guard for hooks |
Publications (1)
Publication Number | Publication Date |
---|---|
US1411549A true US1411549A (en) | 1922-04-04 |
Family
ID=23773298
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US446633A Expired - Lifetime US1411549A (en) | 1921-02-21 | 1921-02-21 | Guard for hooks |
Country Status (1)
Country | Link |
---|---|
US (1) | US1411549A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2562401A (en) * | 1946-11-04 | 1951-07-31 | Phillip R Wheeler | Snap hook |
EP0131384A1 (en) * | 1983-06-14 | 1985-01-16 | Elephant Chain Block Company Limited | Hoist hook safety device |
US20060219479A1 (en) * | 2005-04-05 | 2006-10-05 | Zedel | Carabiner with automatic locking |
US8595906B1 (en) * | 2012-05-30 | 2013-12-03 | Pei Chuan Lin | Safety hook |
US10434343B1 (en) * | 2011-03-14 | 2019-10-08 | Climb Tech, Llc | Quick-release attachment point for fall protection |
US11148911B2 (en) * | 2019-02-07 | 2021-10-19 | The Crosby Group LLC | Positive locking latch assembly for hook |
EP4051916A4 (en) * | 2019-11-02 | 2023-12-20 | PN International Private Limited | Personal fall protection device with openable captive eye and lock mechanism |
-
1921
- 1921-02-21 US US446633A patent/US1411549A/en not_active Expired - Lifetime
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2562401A (en) * | 1946-11-04 | 1951-07-31 | Phillip R Wheeler | Snap hook |
EP0131384A1 (en) * | 1983-06-14 | 1985-01-16 | Elephant Chain Block Company Limited | Hoist hook safety device |
US20060219479A1 (en) * | 2005-04-05 | 2006-10-05 | Zedel | Carabiner with automatic locking |
US8016073B2 (en) * | 2005-04-05 | 2011-09-13 | Zedel | Carabiner with automatic locking |
US10434343B1 (en) * | 2011-03-14 | 2019-10-08 | Climb Tech, Llc | Quick-release attachment point for fall protection |
US8595906B1 (en) * | 2012-05-30 | 2013-12-03 | Pei Chuan Lin | Safety hook |
US11148911B2 (en) * | 2019-02-07 | 2021-10-19 | The Crosby Group LLC | Positive locking latch assembly for hook |
EP4051916A4 (en) * | 2019-11-02 | 2023-12-20 | PN International Private Limited | Personal fall protection device with openable captive eye and lock mechanism |
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