US 1666991 A
Description (OCR text may contain errors)
April 24, 1928.
' 5. COHEN ELECTRICAL CONNECTER Filed Aug. 25, 1925 N E M C Y E N 0 S vwewtoz Patented Apr. 24, 1928.
UNITED STATES SIDNEY COHEN, 0F NEPONSIT, NEW YORK.
Application filed August 25, 1925. Serial No. 52,437.
This invention relates to improvements in electrical connectors for connecting electric conductors to terminal posts.
The principal object of my invention is to provide a connecter of this character which affords suitable clamping means capable of attaching itself to the end of a flexible wire used in telephone, radio and other electric instruments.
A further object of the invention is the provision of a tapered sheath of insulating material adapted to slide over the clamping jaws of the connecter to hold the jaws in clamping position and at the same time afl'ord ample insulation for the metal parts of the conductor.
A still further object of the present invention is to provide a construction and arrangement with which the clamping jaws may be forced to ofi'set the flexible portion of the conductor projecting therebetween to secure gripping and contact making engagement with the conductor.
The invention is illustratively exemplified in the accompanying drawing, in which Figure 1 is a plan view of the connecter and Figure 2 is a longitudinal sectional view of the same with the jaws in clamping position:
' Figure 3 is an elevational view of the connecter showing the jaws parted, and Figure 4 is a transverse sectional View taken on the lines 4-4 of Figure 2.
Referrin to the drawings, 10 denotes a U-shaped shank portion having a lateral extension 11 projecting from one end and terminating in an suitable terminal connection 12. The c osed bottom portion of the shank 10 is provided with a struck up bead 13 about midway the length of the shank, and ad'acent the end having the extension 11 is pivotally or otherwise mounted a jaw 14, which folds into the Ushaped shank 10 and is provided with a notch 15 in its underside to coincide with the raised bead 13 on the inner surface of the shank. Projecting In order to insure proper holding of the jaw 14 and shank 10 in clamped position a tapered cylindrical sheath 18 of insulating material is slidably mounted about the shank 10 so as to bring the small end over the open end of the latter and jaw 14.
To attach a connecter of the character just described, the flexible end of the conductor wire 17 is threaded through the smaller end of the sheath 18 and then placed over the bottom of the shank 10 so as to bring the end under the hinged end of the jaw 14. The jaw 14 is thereafter collapsed within the shank 10 and the wire 17 will be pressed about the bead 13 and into the notch 15 where the tooth 16 will bite into or bear against the wire be 0nd the bead. Then the sheath 18 is move over the shank and jaw until the tapering wall of the sheath engages the upper free end of the jaw and forces it to remain in clamping position.
It will be clear, that when the shank 10 and jaw 14 are in clam ing position about the flexible conductor 1 as illustrated in Figure 2, any strain brought about by a ull on the conductor will tend to draw the atter against the offset portions in the shank and jaw and a ainst the tooth 16. The close engagement 0 the jaw and shank with the conductor also insure perfect electric contact between the parts,
Having now described my invention what I claim and desire to secure by Letters Pat ent is: I
In a connecter for flexible electric couductors, the combination of a shank U- shaped in cross section having a terminal connection integral with one end and an upset bead rojecting from the inside of the closed si e of the shank, a jaw pivotally mounted in the terminal connection end of the shank and having its underside provided with a notch to coincide with the bead and 9b a tooth to bite into the interposed flexible. conductor, and a tapered insulating sheath slidable over the free ends of the jaw on said shank to force the two members into clamping position about the conductor.
In testimony whereof he has aflixed his signature. I