US348791A - Safety-hook - Google Patents

Safety-hook Download PDF

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Publication number
US348791A
US348791A US348791DA US348791A US 348791 A US348791 A US 348791A US 348791D A US348791D A US 348791DA US 348791 A US348791 A US 348791A
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United States
Prior art keywords
hook
opening
bolt
safety
piece
Prior art date
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Expired - Lifetime
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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
    • 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

  • My invention relates to safety-hooks, the object being to provide a device of this character which may be readily and quickly attached to or detached from an object, and which will be held against accidental displacement or detachment.
  • a further object of the invention is to simplify and improve devices of this class, and to provide a hook which shall be strong and durable, and which may be manufactured and supplied at a comparatively slight cost.
  • the invention consists in the improved construction and combination of parts,hereinafter fully described, and pointed out in the claim.
  • Figure l is a perspective view of a hook embodying myinvention.
  • Fig. 2 is a vertical section of the same,taken through the pivoted portion and showing the springactuated bolt; and
  • Fig. 3 is a view showing my improvement applied to links.
  • A represents the body of the hook, which is, as shown, preferably oval.
  • the hook is made smaller at one end than at its other end, and formed integral with or secured to the small end is an eye or loop, I), the opening of which is at right angles to that of the hook, said eye serving as a means of attachment for the hook.
  • the hook A is formed on one of its sides 0 with an opening, which opening extends from its small end to a point about midway its ends.
  • d is made in the body of the hook at thesmall end thereof, and pivoted in said recess is the extension or projection c of a portion, B, which corresponds to the opening in the side of the hook A.
  • the portion B is formed at its free end with an interior passage or openend of which bears a spiral spring, f, so that the end of the bolt e is forced beyond the portion B.
  • An opening, 9, is made in the portion B, near the free end thereof, which opening communicates with the interior passage in the portion B, and located in said opening is a finger-piece, h, which projects from the sliding bolt, and by means of which said bolt may be moved.
  • the opening 9, as will be seen, is sufficiently large to admit the end of the thumb, so that the bolt may be readily moved to open the portion B, said opening being beveled at one end for this purpose.
  • the finger-piece h is located below the face of the opening, so that there is no possibility of the springactuated bolt being accidentally moved and the portionBdetaehed.
  • Thefreeendofthespringactuated bolt engages an opening, i, made in the portion A, and thus closes said opening.
  • the bolt may be slid rearwardly by means of the fingerpiece, and the portion B lifted, when the hook maybe detached.

Description

(No Model.)
B. E. SMITH. H
SAFETY HOOK.
Patented Sept. '7, 1886.
WITNESSES W N PETERS, mme-umo n m WashmgtolLD c UNITED STATES PATENT OFFICE.
EDIVARD H. SMITH, OF RUTHERFORD, CALIFORNIA.
SAFETY-HOOK.
SPECIFICATION forming part of Letters Patent N0. 348,791, dated September 7, 1886.
Application filed December 21, 1885. Serial No. 186,348. (No model.)
To all whom it may concern:
Be it known that I, EDWARD H. SMITH, a citizen of the United States, residing at Rutherford, in the county of Napa and State of California, have invented certain new and useful Improvements in Safety-Hooks; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same.
My invention relates to safety-hooks, the object being to provide a device of this character which may be readily and quickly attached to or detached from an object, and which will be held against accidental displacement or detachment.
A further object of the invention is to simplify and improve devices of this class, and to provide a hook which shall be strong and durable, and which may be manufactured and supplied at a comparatively slight cost.
The invention consists in the improved construction and combination of parts,hereinafter fully described, and pointed out in the claim.
In the drawings, Figure l is a perspective view of a hook embodying myinvention. Fig. 2 is a vertical section of the same,taken through the pivoted portion and showing the springactuated bolt; and Fig. 3 is a view showing my improvement applied to links.
Corresponding parts in the several figures are denoted by the same letters of reference.
Referring to the drawings, A represents the body of the hook, which is, as shown, preferably oval. The hook is made smaller at one end than at its other end, and formed integral with or secured to the small end is an eye or loop, I), the opening of which is at right angles to that of the hook, said eye serving as a means of attachment for the hook. The hook Ais formed on one of its sides 0 with an opening, which opening extends from its small end to a point about midway its ends. A recess,
d, is made in the body of the hook at thesmall end thereof, and pivoted in said recess is the extension or projection c of a portion, B, which corresponds to the opening in the side of the hook A. The portion B is formed at its free end with an interior passage or openend of which bears a spiral spring, f, so that the end of the bolt e is forced beyond the portion B. An opening, 9, is made in the portion B, near the free end thereof, which opening communicates with the interior passage in the portion B, and located in said opening is a finger-piece, h, which projects from the sliding bolt, and by means of which said bolt may be moved. The opening 9, as will be seen, is sufficiently large to admit the end of the thumb, so that the bolt may be readily moved to open the portion B, said opening being beveled at one end for this purpose. The finger-piece h is located below the face of the opening, so that there is no possibility of the springactuated bolt being accidentally moved and the portionBdetaehed. Thefreeendofthespringactuated bolt engages an opening, i, made in the portion A, and thus closes said opening. When desired to remove the hook, the bolt may be slid rearwardly by means of the fingerpiece, and the portion B lifted, when the hook maybe detached. I
In Fig. 3 I have illustrated my improvement applied to a link. In this instance the construction and operation is similar to that described in the book.
The improvement before described is simple in its construction, cheap to manufacture, and thoroughly effective for the purpose intended.
Having thus described my invention, I
claim The combination, with the hook A, of the pivoted portion B, having the straight vertical passage, a bolt in said passage, a spring in said passage bearing against the upper end of the belt, a finger-piece projecting from the bolt, the portion B, having an enlarged opening in which the finger-piece works, said opening being beveled at one end, and the end of thefinger-piece being located below the face'of the portion B.
In testimony whereof I affix my signature in presence of two witnesses.
EDIVARD I-I. SMITH.
IVitnesses:
W. A. MAOKINDER, G130. S. MEREDITH.
ing, in which slides a bolt, 0, against the rear
US348791D Safety-hook Expired - Lifetime US348791A (en)

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US348791A true US348791A (en) 1886-09-07

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8595906B1 (en) * 2012-05-30 2013-12-03 Pei Chuan Lin Safety hook

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8595906B1 (en) * 2012-05-30 2013-12-03 Pei Chuan Lin Safety hook

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