Spring assist cable clamps

A cable clamp comprising:

• a clamp body having a cap, a base and wall between the cap and base, wherein the cap, base and wall form a cavity, and wherein the cap includes a first main span cable groove;
• a spacer having a spacer body movably mounted within the cavity, the spacer body having a hollow center and a top wall with a second main span cable groove that faces the first main span cable groove, and a first drop cable groove;
• a keeper positioned within the hollow center of the spacer body and movable within the hollow center, the keeper having a second drop cable groove that faces the first drop cable groove and a keeper coupling member;
• a stem having a stem coupling member at one end of a threaded shaft and a tool mounting member at the other end of the threaded shaft, the threaded shaft being positioned within a threaded aperture in the clamp body so that the stem coupling member is coupled to the keeper coupling member such that rotational movement of the stem is translated to linear movement of the keeper;
• and
• a spring positioned around the threaded shaft of the stem within the hollow center of the spacer between the keeper and the spacer body, wherein the spring normally biases the second drop cable groove toward the first drop cable groove.