US1420790A

US1420790A - Clamp device for electric conductors

Info

Publication number: US1420790A
Application number: US403456A
Authority: US
Inventors: Varney Theodore
Original assignee: Aluminum Company of America
Current assignee: Howmet Aerospace Inc
Priority date: 1920-08-14
Filing date: 1920-08-14
Publication date: 1922-06-27
Anticipated expiration: 1939-06-27

Description

T.VARNEY. CLAMP DEVICE FOR ELECTRIC CONDUCTORS.

APPLICATION FILED AUG. 14, 1920.

Patented June 27, 1922.

2 SHEETS-SHEET L FIBJS- /N MENTOR WITNESSES 5. v Q

T. VARNEY.

CLAMP DEVICE FOR ELECTRIC CONDUCTORS.

APPLICATION FILED AUG. 14, I920.

Patented J 11110 27, 1922;

2 SHEETS-SHEET 2.-

ml VENTO/Q 'uNirEo STATE-S ATENT or-rice.

'rnnonoar. vmnr, or sEWIcKLEY, rnnnsrrvama'assrenoa 'ro ALUMINUM oommmr or manager rrr'rsnunen, PENNSYLVANIA, a'coarormrron or PENNSYLVANIA.

CL DEVICE FOR ELEGTRICCONDUCTORS. I

To all whom it may concern:

. Be it knownthat I, THEODORE VARNEY, a citizenof the United States, and a resident of Sewickley, in the county of Alle- 'gheny and Stateof Pennsylvania, have invented certain new and useful Improvements in Clamp Devices for Electric Conductors,

hich the following is a specification. his invention relates to a clamp intended to hold two wires or cables together in parallel position, usually for the purpose of pro- "vi'ding electrical connections between two cables, but sometimes for mechanical reasons.

It has for its object to provide a clamp for this purpose which shall be adjustable for use with varioussizes' of cable, and will effectively engage both cables even though they be of different diameters.

The invention may be clearly understood by reference to the accompanying drawings, in which, V

Fig. 1 is a side elevation of the clamp Fig. 2 is an end elevation thereof, show-- ing parallel cables of the same size and having a relatively small diameter being en- .gaged by the clamp;

Fig. 3 is a plan of the clamp;

Fig. 4 is an end elevation similar to Fig. 2 in which] parallel cables of the same size but having relatively large diameters are being engaged; p v

Fig. 5 is a similar end elevation showing parallel cables of different diameters being engaged Fig. 6 is an end elevation of one of theclamping plates; and

Fig. 7 is a top View thereof. In the drawings, the clamp A comprises two plates or

members

5 and 6 having central openings 7 'therein through which passes -a bolt. 8 provided on one'end with a 'head' 9 and on its opposite threaded end with a lock washerlO and a nut 11. On the outer faces of the

members

5 and 6 and surrounding the openings 7 are rounded project-ions or surfaces 7 By reason of these rounded. projections, the members may be ytightly forced together, even though they are at an angle to each other, shown in Fig. 5. q

.On the inner faces of said members and along each 'side thereof are ooves or curved seat portions 12 for the ca les or wires, the

Specification of Letters Patent.

Patented. June 27, 1922.

Application filed August 14,, 192 0. serial no. 403,456.

cables being'indicated by the letter B. Ex tendmg outwardly from the ooved seats are spaced apart curved extensions 13. I The 4 extensions 13 on one 'side of one-member are preferably staggered with relation to those less height'than the curved extensions 13.

The lugs 14 are stag ered with relation to the extensions 13. he extensions 13 and the lugs 14 on one side of. one plate 5 are also staggered with relation to those on the adjacent side of the other plate 6. Thus,

the'projections14 and the extensions 13' on the innerfaces of the plates mesh or interlock so that they may be held close together, as shown in Fig.' 2, to permit small cables to be clamped. This interlocking also prevents any endwise or sidewise movement of the plates relativelyto each other.

When sufliciently large cables are bein connected, the projections 14 will be raised out of interlocking relation but the rounded extensions 13 will still interlock, as shown 1n F 1g. 4:. By reference to Fig. 5, it will be seen that one cable or wire of large diameter and one of small diameter may be connected in the same clamp.

It will beobserved that the curved extensions 13 andthe rounded sides of the raised portions or projections 14 serve to. retaln the cables in the grooved or curved seats .12. By properlypositioning portions of parallelcables in the grooves onthe opposite sides of the two plates and tightening the nut 11 on the bolt 8, the two plates may be drawn tightly together to connect the cables.

What Eclaim is:

1. A clamp for parallel wires or cables capable of use with wires or cables of varying diameters and for simultaneously clamp ing wires or cables of different diameters including a pair of opposed members each having interlocking portions, a plurality of inwardly extending projections adapted to interlock, wire engaging seats disposed between'the interlocking portions and the said projections, and means for securing the opposed members together. 7

2. A clamp for parallel wires or cables capable of use with wires or cables of varying and different diameters including a pair of opposed centrally apertured members each havin a rounded projection on its outer face, interlocking portions, wire engaging seats, and a central bolt having means bearing upon the rounded projections of the opposed members.

3. A clamp for parallel wires capable of use with wires of varying and different diameters including a pair of opposed clamping plates each having interlocking curved extensions along their side edges, a series of projections along each side of the plates but spaced inwardly from the curved extensions on the adjacent surfaces of the plates adapt ed to interlock, wire receiving and clamping means formed between the extensions and projections, and means for clamping the plates together.

4. A clamp for parallel wires capable of use with wires of varying and different diameters comprising a pair of similar opposed clamping plates each having interlocking curved extensions along their side edges, a series of projections parallel with each side of the plates but spaced inwardly from the extensions on the adjacent surfaces of the plates and adapted to interlock, wire receiving and clamping means formed between the extensions and projections, and means including a central bolt for clamping the plates together.

5. A clamp for parallel wires comprising a pair of opposed clamping plates having parallel means thereon adapted to coact to engage the wire, spaced apart extensions on the outside edges of said means and on each plate which are adapted to interlock with similar extensions on the opposite plate, spaced apart projections adjacent the inside edges of said wire engaging means, said projections on the adjacent faces being adapted to interlock, and means for holding the plates in clamping position.

6. A clamp for parallel wires comprising a pair of opposed plates having parallel wire receiving grooves on their adjacent faces, curved spaced apart extensions along the sides of each plate and adjacent the grooves and so arranged that the extensions on one plate interlock with those on the other, lugs on the inner faces of said plates and adjacent the rooves, said lugs on opposite plates being ad apted to inter1ock,an d' means for holding the plates in clamping relation.

eaopeo 7. A clamp for parallel wires comprising a pair of opposed plates having parallel wire receiving grooves on their adjacent faces, curved spaced apart extensions along the sides of each plate and adjacent the grooves and so arranged that the extensions on one plate interlock with those on the other, lugs on the inner faces of said plates and adjacent the grooves, said lugs on opposite plates being of less height than the curved extensions and adapted to interlock, and means for holding the plates in clamping relation.

8. A clamp for parallel wires comprising a pair of opposed plates, curved seat portions extending longitudinallyalong each side of said plates on the adjacent faces thereof, spaced apart interlocking extensions on'the outsides of said seat portions, projections adapted to interlock adjacent inner sides of said seat portions, and means for holding the plates in clamped relation.

9. A clamp for parallel wires comprising apair of opposed plates, curved seat portions extending along each side of Said plates on the adjacent faces thereof, spaced apart extensions along the outside of said seat portions, the extensions on one side being staggered with relation to those on the other and with relation to those on the adjacent side of the opposite plate, spaced apart projections adjacent the inner sides of the seat portions and which are staggered with relation to said extensions, said extensions and projections being adapted to form wire engaging means, and means for holding the plates in clamped relation.

10. A clamp for wires or cables including a pair of opposed members, one of which has a rounded projection on its outer face,

each member having interlocking portions and wire engagin seats, and means bearing upon the rounde portion for securing the opposed members together, said rounded portion co-acting with the securing means in such manner as to allow for the angular adjustment of said clamp members when being clamped together.

In testimony whereof I aflix my signature in presence of two witnesses.

THEODORE VARNEY. Witnesses:

J. M. GEOGHEGAN, Lois WINEMAN.