Abstract: An elongated chain master link is provided including a removable side link of substantially conventional construction but provided with a transverse opening intermediate the opposite end transverse bores formed therethrough adapted to receive groove master link pin ends therethrough. A retaining clip of elongated panel-like construction is also provided and constructed of spring material such as spring steel. The clip includes opposite end transverse openings formed therethrough and one of the end openings includes communicated large and small width portions while the other opening includes communicated greater and lesser width portions.

Abstract: A body is provided including opposite ends, opposite sides and a top and a bottom. A pair of upstanding levers are pivotally secured, intermediate their upper and lower end portions, to opposite end portions of the body for limited oscillation about axes transverse to the levers and the body. Spring structure is provided for yieldingly biasing the upper ends of the levers apart and the body includes opposite side rows of elongated longitudinally spaced relatively insulated contacts projecting endwise outwardly and downwardly from opposite side portions of the bottom of the body. The lower ends of the levers include coacting opposite side depending conductive hooks opening longitudinally of the body toward the remote levers and corresponding side hooks of the levers are spaced apart in planes spaced slightly inwardly of the corresponding side contacts.