US1449945A - Wire grip - Google Patents

Wire grip Download PDF

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Publication number
US1449945A
US1449945A US494621A US49462121A US1449945A US 1449945 A US1449945 A US 1449945A US 494621 A US494621 A US 494621A US 49462121 A US49462121 A US 49462121A US 1449945 A US1449945 A US 1449945A
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United States
Prior art keywords
wire
jaw
plate
gripping
jaws
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
US494621A
Inventor
Jacobsen Morris
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AT&T Corp
Original Assignee
American Telephone and Telegraph Co Inc
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Publication date
Application filed by American Telephone and Telegraph Co Inc filed Critical American Telephone and Telegraph Co Inc
Priority to US494621A priority Critical patent/US1449945A/en
Application granted granted Critical
Publication of US1449945A publication Critical patent/US1449945A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • F16G11/10—Quick-acting fastenings; Clamps holding in one direction only
    • F16G11/105—Clamps holding in one direction only
    • 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
    • Y10T24/3936—Pivoted part
    • Y10T24/394—Cam lever
    • Y10T24/3947—Fixed and movable jaws, movable jaw pulled

Definitions

  • This invention relates to gripping devices for pulling or stringing wires or the like, and is more particularly adapted for use by linemen in. connection with electrical line construction.
  • An object of the invention consists in providing a device of this character with means whereby increased and effective pulling force may be automatically translated into an increased pressure of the jaws of said device upon a wire or the like. Another object consists in providing the improved device with effective gripping surfaces which exert an even pressure and prevent the cutting or bending of the wire.
  • Figure 1 is a front elevation of the improved device
  • Fig. 2 is a front elevation showing another form of the invention
  • Fig. 3 is a plan view of the arrangement of Fig. 2.
  • 5 represents any suitable support or base-plate to which is affixed a jaw 6 which extends longitudinally of said base-plate.
  • a jaw 7 is oppositely positioned on the base-plate with respect to the jaw 6, and is provided with slots 8 and 9 whereby it is movable on studs 10 and 11 fixed to the base-plate 5.
  • the jaws 6 and 7 are provided with coacting gripping surfaces 12 and 13 which are adapted to engage the wire to be operated upon.
  • the opposing faces of said jaws may be provided with round or V-shaped grooves extending throughout their length, and said opposing faces may be waved, as indicated in Fig. 1, or straight, as shown in Fig. 2.
  • the opposing faces of said jaws always remain parallel to each other and exert an even pressure upon the wire or strand throughout the length of the jaws, and thus avoid cutting or bending of said Wire and Serial No. 494,621.
  • the movable jaw 7 is provided with a cam or bearing-surface 14 against Which an eccentric surface of a toggle member 15 bears.
  • the toggle member 15 is pivoted at one end to a stud 16 fixed to the base-plate -5 and at the opposite end is pivotally associated with a second toggle member 17 which reciprocates within a guide 18 secured to the back face of base-plate 5.
  • a draft-loop 19 Positioned in an aperture provided on one end of the toggle member 17 is a draft-loop 19 to which may be attached a rope for the purpose of applying pulling force to the device.
  • a bar 20 is formed integral with the supporting-plate 5 and extends longitudinally therefrom.
  • a member 21 of substantially rectangular form is mounted and adapted to reciprocate on said bar.
  • Lugs are formed on the upper surface at either end of the member 21, and an aperture is provided in each lug.
  • Links 22, 22 pivotally connect one end of the toggle member 15 with the lug at one end of the member 21, and the draft-loop 19 is positionedin the aperture of the lug at the opposite end of said member.
  • a spring 23 is provided on the: bar 20, the ends of said spring resting against the surfaces of the base-plate 5 and the member 21 and normally maintaining the jaws 6 and 7 in closed position.
  • the draftloop In the operation of the device the draftloop is pushed inwardly toward the supporting plate, thereby actuating the toggle members to release the movable jaw so that it may be raised to permit of the wire being inserted between the jaws 6 and 7.
  • an outward pull is exerted on said draftloop by means of the rope attached thereto.
  • the pressure of the jaws on the wire is augmentedwhen tension is exerted on the draft-loop, owing to the increased pressure of the eccentric-shaped toggle member upon the movable jaw, and this pressure continues while tension is exerted on the loop, thus affording a very effective gripping arrangement.
  • a gripping device comprising a supporting-plate having a bar extending longi tudinally thereof, a gripping jaw afiixed to said supporting-plate, a movable jaW coacting With the first mentioned jaw, a bearing surface in said movable jaw, toggle means for engaging said bearing surface, means reciprocating on said bar for actuating said toggle means whereby said movable jaw engagesthe first mentioned jaW in gripping and releasing positions, and means associated with said bar for normally exerting tension on said reciprocating means.
  • ' 21A gripping device comprising a supease-i5 porting plate having a barextending therefrom, a gripping jaW aflixed to said supporting plate, a movable ja coacting with the first mentioned jaw, said movable jaiv having-an eccentric bearing surface, toggle means pivotally associated With said supporting plate for engaging the eccentric bearing surface, reciprocating means slidably mounted on said bar for actuating said toggle means whereby said movable jaw engages the first mentioned jaw in gripping position, and a spring encircling said bar for exerting tension on said reciprocating means.

Description

Mar. 27, 1923. 1,449,945
M. JACOBS-EN WIRE GRIP Filed Aug.25, 1921 INVENTOR Mar/71.5 ehcosen/ ATTORNEY Patented Mar. 27, 1923.
UNITED STATES 1,449,945 PATENT OFFICE.
MORRIS JACOBSEN, OF WEST HAVEN, CONNECTICUT, ASSIGNOR TO AMERICAN TELE- PHONE AND TELEGRAPH COMPANY, A CORPORATION OF NEW YORK.
WIRE GRIP.
Application filed August 23, 1921.
T all whomit may concern:
Be it known that I, Monnrs J AooBsEN, residing at 381 Third Avenue, West Haven, in the county of New Haven and State of Connecticut, have invented certain Improvements in Wire Grips, of which the following is a specification.
This invention relates to gripping devices for pulling or stringing wires or the like, and is more particularly adapted for use by linemen in. connection with electrical line construction.
An object of the invention consists in providing a device of this character with means whereby increased and effective pulling force may be automatically translated into an increased pressure of the jaws of said device upon a wire or the like. Another object consists in providing the improved device with effective gripping surfaces which exert an even pressure and prevent the cutting or bending of the wire. These objects as well as other objects of the invention will be clear frbm the following detailed description.
1n the accompanying drawing, in which one embodiment of this invention is shown, Figure 1 is a front elevation of the improved device; Fig. 2 is a front elevation showing another form of the invention, and Fig. 3 is a plan view of the arrangement of Fig. 2.
Similar characters of reference indicate corresponding parts throughout the several figures of the drawings.
Referring to construction shown, 5 represents any suitable support or base-plate to which is affixed a jaw 6 which extends longitudinally of said base-plate. A jaw 7 is oppositely positioned on the base-plate with respect to the jaw 6, and is provided with slots 8 and 9 whereby it is movable on studs 10 and 11 fixed to the base-plate 5. The jaws 6 and 7 are provided with coacting gripping surfaces 12 and 13 which are adapted to engage the wire to be operated upon. The opposing faces of said jaws may be provided with round or V-shaped grooves extending throughout their length, and said opposing faces may be waved, as indicated in Fig. 1, or straight, as shown in Fig. 2. The opposing faces of said jaws always remain parallel to each other and exert an even pressure upon the wire or strand throughout the length of the jaws, and thus avoid cutting or bending of said Wire and Serial No. 494,621.
also afford an effective gripping surface. The movable jaw 7 is provided with a cam or bearing-surface 14 against Which an eccentric surface of a toggle member 15 bears. The toggle member 15 is pivoted at one end to a stud 16 fixed to the base-plate -5 and at the opposite end is pivotally associated with a second toggle member 17 which reciprocates within a guide 18 secured to the back face of base-plate 5. Positioned in an aperture provided on one end of the toggle member 17 is a draft-loop 19 to which may be attached a rope for the purpose of applying pulling force to the device.
In the form shown in Figs. 2 and 3, a bar 20 is formed integral with the supporting-plate 5 and extends longitudinally therefrom. A member 21 of substantially rectangular form is mounted and adapted to reciprocate on said bar. Lugs are formed on the upper surface at either end of the member 21, and an aperture is provided in each lug. Links 22, 22 pivotally connect one end of the toggle member 15 with the lug at one end of the member 21, and the draft-loop 19 is positionedin the aperture of the lug at the opposite end of said member. A spring 23 is provided on the: bar 20, the ends of said spring resting against the surfaces of the base-plate 5 and the member 21 and normally maintaining the jaws 6 and 7 in closed position.
In the operation of the device the draftloop is pushed inwardly toward the supporting plate, thereby actuating the toggle members to release the movable jaw so that it may be raised to permit of the wire being inserted between the jaws 6 and 7. When the wire is in place an outward pull is exerted on said draftloop by means of the rope attached thereto. The pressure of the jaws on the wire is augmentedwhen tension is exerted on the draft-loop, owing to the increased pressure of the eccentric-shaped toggle member upon the movable jaw, and this pressure continues while tension is exerted on the loop, thus affording a very effective gripping arrangement.
From the foregoing it is thought that the construction, operation and many advantages of the herein described invention will be apparent to those skilled in the art without further description, and it will be understood that various changes in size, shape, proportion and minor details of construetion may be resorted to Without departing from the spirit or sacrificing any advantages of the invention.
What i'sclaimed is:
1. A gripping device comprising a supporting-plate having a bar extending longi tudinally thereof, a gripping jaw afiixed to said supporting-plate, a movable jaW coacting With the first mentioned jaw, a bearing surface in said movable jaw, toggle means for engaging said bearing surface, means reciprocating on said bar for actuating said toggle means whereby said movable jaw engagesthe first mentioned jaW in gripping and releasing positions, and means associated with said bar for normally exerting tension on said reciprocating means.
' 21A gripping device comprising a supease-i5 porting plate having a barextending therefrom, a gripping jaW aflixed to said supporting plate, a movable ja coacting with the first mentioned jaw, said movable jaiv having-an eccentric bearing surface, toggle means pivotally associated With said supporting plate for engaging the eccentric bearing surface, reciprocating means slidably mounted on said bar for actuating said toggle means whereby said movable jaw engages the first mentioned jaw in gripping position, and a spring encircling said bar for exerting tension on said reciprocating means.
In testimony whereof, I have signed my name to this specification this 18th day of August, 1921.
. MORRIS JACOBSEN.
US494621A 1921-08-23 1921-08-23 Wire grip Expired - Lifetime US1449945A (en)

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2420165A (en) * 1944-07-24 1947-05-06 Glenn Tool & Mfg Co Work clamp
US2607095A (en) * 1947-01-28 1952-08-19 Abraham G Maasdam Wire gripping clamp
US3177544A (en) * 1962-09-28 1965-04-13 Murdock Nelson Safety line clamp
US3204309A (en) * 1962-06-18 1965-09-07 Telsta Corp Conductor grip
US3359790A (en) * 1965-05-18 1967-12-26 W D Dillon & Co Inc Wire tensioning apparatus
US3886631A (en) * 1971-12-15 1975-06-03 Milbras Self-clamping grip for a free cable winch
US3902228A (en) * 1971-12-15 1975-09-02 Milbras Self-clamping grips for free cable winches
US3967349A (en) * 1975-04-11 1976-07-06 David Gladhart Clamp for flexible rope
US4355441A (en) * 1978-11-24 1982-10-26 Haell Gunnar B Rope-lock
US4614007A (en) * 1984-10-02 1986-09-30 Britax (Wingard) Limited Clamping means for a strap
USD763674S1 (en) * 2014-12-24 2016-08-16 Nagaki Seiki Co., Ltd. Wire gripper
USD764268S1 (en) * 2014-06-27 2016-08-23 Nagaki Seiki Co., Ltd. Wire gripper

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2420165A (en) * 1944-07-24 1947-05-06 Glenn Tool & Mfg Co Work clamp
US2607095A (en) * 1947-01-28 1952-08-19 Abraham G Maasdam Wire gripping clamp
US3204309A (en) * 1962-06-18 1965-09-07 Telsta Corp Conductor grip
US3177544A (en) * 1962-09-28 1965-04-13 Murdock Nelson Safety line clamp
US3359790A (en) * 1965-05-18 1967-12-26 W D Dillon & Co Inc Wire tensioning apparatus
US3886631A (en) * 1971-12-15 1975-06-03 Milbras Self-clamping grip for a free cable winch
US3902228A (en) * 1971-12-15 1975-09-02 Milbras Self-clamping grips for free cable winches
US3967349A (en) * 1975-04-11 1976-07-06 David Gladhart Clamp for flexible rope
US4355441A (en) * 1978-11-24 1982-10-26 Haell Gunnar B Rope-lock
US4614007A (en) * 1984-10-02 1986-09-30 Britax (Wingard) Limited Clamping means for a strap
USD764268S1 (en) * 2014-06-27 2016-08-23 Nagaki Seiki Co., Ltd. Wire gripper
USD763674S1 (en) * 2014-12-24 2016-08-16 Nagaki Seiki Co., Ltd. Wire gripper

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