Hammock Frame

FIG. 1 is a front elevation view of an ornamental design for a hammock frame, the rear elevation view being a mirror image thereof;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom elevation view thereof;

FIG. 4 is a left side elevation view thereof, the right side elevation view being a mirror image thereof;

FIG. 5 is a front perspective view thereof;

FIG. 6 is a front perspective view thereof, showing one type of hammock attached to the hammock frame to form a hanging bed;

FIG. 7 is a front perspective view thereof, showing another type of hammock attached to the hammock frame to form a hanging bed; and,

FIG. 8 is a front perspective view thereof, showing another type of hammock attached to the hammock frame to form a hanging bed.

The broken line showing of the hammock of different types in FIG. 6 , FIG. 7 , and FIG. 8 is for the purpose of illustrating environment and forms no part of the claimed design.