US196187A - Improvement in pulley-blocks - Google Patents

Improvement in pulley-blocks Download PDF

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Publication number
US196187A
US196187A US196187DA US196187A US 196187 A US196187 A US 196187A US 196187D A US196187D A US 196187DA US 196187 A US196187 A US 196187A
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United States
Prior art keywords
pulley
hook
improvement
block
blocks
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Expired - Lifetime
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D3/00—Portable or mobile lifting or hauling appliances
    • B66D3/04—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage
    • 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
    • F16B45/04—Hooks with sliding closing member
    • F16B45/049—Hooks with sliding closing member provided with means biasing 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.
    • Y10T24/39—Cord and rope holders
    • 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
    • Y10T24/45382—Track or way guided gate
    • Y10T24/45387—Track or way guided gate having means biasing gate
    • Y10T24/45398—Cavity in shank forms track or way

Definitions

  • This inv'ention relates to an improvement in pulley-blocks, such as are designed to be attached in places where the block' is liable to swing or be turned into various positions, and which, with an open hook, would be frequently disengaged.
  • the object of this invention is to constrnct the block so that such disengagement is impossible; and it consists in combining ⁇ with the pulley-block and rigid hook a closing ⁇ device, which Will automatically act to close the month of the hook, and maintain that closed condition initil mechanically opened.
  • A represents the block, formed With a hook, B, as a stationary or 'Permanent part of the block. Vithin the block one or more pnlleys, O, is arranged, in the usual manner.
  • the closing ⁇ device is a bolt, D, arranged in a seat in the block in the plane of the hook, and with a spring, a, tending to throw the bolt ontward, so that it will extend across the month of the hook, as seen in Fig'. 1.
  • rllhis is the normal condition of the bolt.
  • a slot, d is made, and through these slots a projection, e, on each side of the bolt extends, as seen in Fig's. 2 and 3, to serve as convenient means for drawing' the bolt, as indicated in Fig. 1, to open the month of the hook.
  • a mechanism in combination with a pulley-block and the hook rig'idly attached thereto, or made a part thereof, a mechanism, snbstantially such as described, to automatically close the month of the hook, and snbstantially as specified.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Adornments (AREA)

Description

Pulley-Blook.
NPERS, PHQTOJJTHOGRPHEF, WASHINGTON D O UNITED S'I'A'I'Es PATENT OFFICE.,
CHARLES B. BRISTOL, OF NEW HAVEN, CONNEOTIOUT.
IMPROVEMENT IN PULLEY-B LOCKS.
Specification forming` part of Letters Patent No. 196,187, (lated October 16, 1877; application filed September 11, 1877.
To all 'whom it may concem Be it known that I, CHARLES B. BRIs'roL, of New Haven, in the county of New Haven and State of Connecticut, have invented a new Improvement in Pulley-Blocks and I do hereby declare the following, when taken in connectionwith the accompanying` drawings and the letters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitnte part of this specification, and represent, in-
Fignre l, side view; Fig'. 2, edge view; Fig. 3, Vertical section on line X X.
This inv'ention relates to an improvement in pulley-blocks, such as are designed to be attached in places where the block' is liable to swing or be turned into various positions, and which, with an open hook, would be frequently disengaged.
The object of this invention is to constrnct the block so that such disengagement is impossible; and it consists in combining` with the pulley-block and rigid hook a closing` device, which Will automatically act to close the month of the hook, and maintain that closed condition initil mechanically opened.
A represents the block, formed With a hook, B, as a stationary or 'Permanent part of the block. Vithin the block one or more pnlleys, O, is arranged, in the usual manner.
As here represented, the closing` device is a bolt, D, arranged in a seat in the block in the plane of the hook, and with a spring, a, tending to throw the bolt ontward, so that it will extend across the month of the hook, as seen in Fig'. 1. rllhis is the normal condition of the bolt. Through the sides of the block a slot, d, is made, and through these slots a projection, e, on each side of the bolt extends, as seen in Fig's. 2 and 3, to serve as convenient means for drawing' the bolt, as indicated in Fig. 1, to open the month of the hook.
By this construction the month of the hook is secnrely closed, and so that it cannot be detached without mechanically moving the bolt.
While the bolt, as here shown, is believed to be the best method for closing` the month of the hook, equivalent devices may bc made which will accomplish the same purpose that is to say, to automatically close the month of the hook.
I claim-- In combination with a pulley-block and the hook rig'idly attached thereto, or made a part thereof, a mechanism, snbstantially such as described, to automatically close the month of the hook, and snbstantially as specified.
' OHAS. B. BRISTOL.
Witnesses:
JOHN E. EARLE, H. A. KI'rsoN.
US196187D Improvement in pulley-blocks Expired - Lifetime US196187A (en)

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US196187A true US196187A (en) 1877-10-16

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US196187D Expired - Lifetime US196187A (en) Improvement in pulley-blocks

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050278908A1 (en) * 2004-06-17 2005-12-22 Johnson Dwight N Snap hook

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050278908A1 (en) * 2004-06-17 2005-12-22 Johnson Dwight N Snap hook
WO2006007334A1 (en) * 2004-06-17 2006-01-19 Coastal Pet Products, Inc. Snap hook
US7124479B2 (en) * 2004-06-17 2006-10-24 Coastal Pet Products, Inc. Snap hook

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