US2087649A - Grip or clutch for holding wires or cables - Google Patents

Description

July 2o, 1937.A 2,087,649

I GRIP OR CLOTCH FOR HOLDING WIRES OR CABLES W. J. MAGEE Filed June 22, 1935 Patented July 20, 1937 g 2,087,649

UNITED STATES PATENT FFICE GRIP OR CLUTCH FOR HOLDING WIRES R CABLES William J. Magee, deceased, late of Park Ridge, Ill., by Marie E. Magee, administratrix, Park Ridge, Ill., assigner of one-half to A. G. F. Schuster, Chicago, Ill.

Application June. 22, 1935, Serial No. 28,006

Claims. (Cl. 2li- 134) The invention shown on attached drawing is bearing pin I2. The toggles have bearing sura wire or cable grip or clamp for holding a wire faces which iit each other. These bearing suror cable when it is pulled or stretched. faces, indicated at IIa and Sa., are provided by The object of the invention is to providea grip shoulders I IU and 9b on toggles l I and 9, respec- 5 or clamp which will, when attached or clamped tively. The lower end of toggle Il is pivoted to to a wire or cable, hold it with such rmness that the movable clamping jaw I3 by means of a pin the wire or cable can be stretched to the required Ill and it also lits the bearing surface I5 of jaw tension for the purpose it is to serve, without I3. Compression strains on the pins I0, I2, and scarring or otherwise damaging the wire. It is i4 are relieved by the bearing surface I5 engagso constructed that it is not an obstruction to ing the lower end of toggle II, the bearing sur-'l0 joints of the wire or cable being made while it face IIa engaging the lower end of toggle 9, the is holding the cable and it can be operated so as bearing surface 9a engaging the upper end of to readily release the cable in order to again grip toggle I I, and the bearing surface of the shoulder it at another position, or it can be readily re- 8a engaging the top of the toggle 9. The pin I4 moved from the cable by hand. rigidly rits the jaw I3 an-d is p-revented from turn- 15 It is constructed so that the force exerted on ing in it by means of the two parallel surfaces the handle or draw bar is greatly increased due I6. The jaw I3 can move in a direction at right to the original arrangement of levers through angles to the grooved surface'in the lower frame which the pulling force is conveyed to the clamp- 8 by means of the elongated hole surfaces I6 in ing jaw which grips the wire or cable. the body 8. The fit of flat surface I'I of'pin I4 20 The construction of the grip is such that the in the groove I6 of the body 8 is suiciently loose pulling force exerted on the draw bar maintains Vso that when the movable clamping jaw is .the continuous alignment of the cable in the jaw clamped down against a wire or cable, both ends and in front of it so that no bend occurs which I8 and I9 will press with equal force against the would result in injuring the cable. wire or cable. Pivoted to the toggles 9 and II e It is so constructed that it may be set in posiby means of pin I2 is the jaw end 2| of draw bar tion on a wire or cable by the operator who can 20. Draw bar 20 is held in position to body 8 by then go to a remote position on the ground or at means of a bearing cap 22 which allows the draw an elevation and apply a pulling force to an bar 2D to' move backward and forward'which in attached rope which will cause the grip to more turn actuates the toggles 9 and I I. On the other 30 firmly clasp the wire or cable'without slipping en-d of the draw bar "20 is the circular shaped thereon. f handle 22 to enable a cable or rope to be passed The attached drawing shows a side view of through and tied to it. Encircling the handle is the invention, Fig. l, and a cross sectional view, a spring 23 which is located around the draw bar Fig. 2. The cross sectional View, Fig. 2, illus- 20 and between the outside of body 8 and the trates the construction on the irregular line noted inner side of the circular handle end 22. The as I, 2, 3, 4, on Fig. 1. spring 23 is of such lengthwhen fully expanded f Fig. 1 side view shows a cable 5 located in one that it will hold the draw bar in such a position of the two grooves in the lower stationary part that the clamping jaw is pressed down against 40 of the jaw. There are two grooves 6 and 'I so the wire or cable. 40 that one grip will accommodate various sized In order to attach the grip to a wire or cable wires or cables. the operator takes hold of the grip by placing the The invention includes a body 8 in the lower 4 ngers of his hand against the inner surface inner portion of which are located the two of the body at the points marked :c 24 and by I grooves 6 and 'I. The body is constructed of a placing the thumb of his hand against the a: 25 45 metal which will permit of the grooves being so mark of handle 22. With his hand the operator treated during construction that they will be of forces the draw bar forward which actuates the such hardness as will give reasonable service with toggles to raise the clamping jaw I3, ywhich pera minimum wear. To the upper part of the body mits the operator to insert the wire or cable in is attached a toggle 9 by means of a bearing the groove 6 or 'I. By releasing the pressure on 50 pin IU. The upper part of the body is so conthe thumb the movable clampingjaw presses Y structed that the top of toggle 9 has a 'bearing against the wire or cable, which in turn is pressed surface which fits the bearing surface of the body against the jaw on the body. By means of a provided by a shoulder w. The lower end of rope, wire or cable attached to the circular hantoggle 9 is pivoted to toggle II by means of a dle end of the draw'bar 20 the operator can go 55 `to a remote position and apply a pulling force r attach the pulling wire rope or cable to` a winch for a more forceful pulling of the grip and the wire or cable to which it has been gripped.

The grip may be constructed so the number of grooves 6 and I may be increased in number to suit various sizes of wires or cables, and the shapes and relative proportion of the various parts of the grip or clamp may be varied to suit economic manufacture and convenience of operation without departing from the substance of the invention.

The claims for this invention are as follows:

1. A clamp of the character described comprising a frame, a jaw thereon, a second jaw facing said rst named jaw, means slidably mounting said second jaw on the frame for movement bodily toward and away from the first named jaw, a toggle link pivoted on the frame, and a second toggle link pivoted on said second jaw and pivotally secured to the rst named link, guide means at the pivotal connection of said second link and second jaw slidably connected with-said frame to guide the second law directly toward and away from said rst named jaw, and a draw bar connected to said links at a point where they are pivotally secured together and movable in said frame.

2. A cable grip which comprises a frame, a stationary jaw on said frame, a movable jaw mounted on said frame for sliding movement toward and away from said stationary jaw in a direction substantially perpendicular toy the stationary jaw, a pair of toggle links pivoted to each other with one pivoted to the frame and the other to the movable jaw whereby movement of said links toward alignment with each other moves said movable jawtoward the stationary jaw, and a draw bar connected to the links ata point where they are pivotally secured together and slidably mounted o-n the frame, and spring means pressi-ng the bar in a direction to move the jaws together.

3. In a clamp of the character described, a frame, a stationary jaw, a movable jaw slidably mounted on the frame for movement toward and away from the stationary jaw, a toggle link, a pivot pin connecting said link with the movable jaw, a second toggle link, a pivot pin connecting said links to each other, a pivot pin on the frame spaced from said movable jaw, said second toggle link bei-ng mounted on said last named pivot pin, and means to connect the toggle links to a tensioning device whereby to apply cable tensioning force to said links for closing the jaws upon a cable said last named means comprising a draw bar secured to the pivot pin which connects said links together.

4. In a clamp of the character described, a frame, a stationary jaw, a movable jaw slidably mounted on the frame for movement toward and away from -the stationary jaw, a toggle link, a pivot pin connecting said link with the movable jaw, a second toggle link, a pivot pin connecting said links to each other, a pivot pin on the frame spaced from said movable jaw, said second toggle link being mounted 0n said last named pivot pin, and means to connect the toggle links to a tensioning device whereby to apply cable tensioning force to said links for closing the jaws upon a cable, said movable jaw having a bearing surface engaged by the adjacent end of the rst named link, each link having a bearing surface engaged by the end of the other link, and the framehaving a bearing surface engaged by the adjacent end of the second link.

5. In a clamp of the character described, a frame, a stationary jaw, a movable jaw slidably mounted on the frame for movement toward and away from the stationary jaw, a toggle link, a pivot pin connecting said link with the movable jaw, a second toggle link, a pivot pin connecting said links to each other, a pivot pin on the frame spaced from said movable jaw, said second toggle link being mounted on said last named pivot pin, and means to connect the toggle links to a tensioning device whereby to apply cable tensioning force to said links for closing the jaws upon a cable, said last named means comprising a draw bar mounted on said second named pivot pin, and a bearing on said frame through which said draw bar is slidable.

MARIE E. MAGEE,*

A(imimstratria: of the Estate of William J. Magee,

Deceased.

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