1. A frame assembly for supporting a stretcher in a substantially horizontal position comprising: at least two transverse bearer elements mounted in spaced relationship with respect to each other to support a stretcher; each of the elements including a fixedly mounted section and a movably mounted section; said sections having structural configurations to be telescoped with respect to each other; biasing means attached to each of the sections to telescope the section; each said element includes abutment members located at each end thereof; an abutment member being mounted on the fixedly mounted section and another abutment member being mounted on the movably mounted section; said structural configurations include arresting means to prevent movement of the fixedly mounted sections with respect to the movably mounted sections; each said movably mounted section comprises an adjustable rod member; each said fixedly mounted section comprises a spar member having a tube portion which receives the rod member; said biasing means includes a traction spring connected at each end thereof to the rod and spar members; each said transverse element includes bearing members located at each end thereof to support the structure of a stretcher; and a first bearing member mounted on the adjustable rod member and a second bearing member mounted on the movable spar member; said first bearing member including at least one ball member in contact with the outside surface of the spar member.

3. A frame assembly for supporting a stretcher in a substantially horizontal position comprising: at least two transverse bearer elements mounted in spaced relationship with respect to each other to support a stretcher; each of the elements including a fixedly mounted section and a movably mounted section; said sections having structural configurations to be telescoped with respect to each other; biasing means attached to each of the sections to telescope the sections; each said element includes abutment members located at each end thereof; an abutment member being mounted on the fixedly mounted section and another abutment member being mounted on the movably mounted section; said structural configurations include arresting means to prevent movement of the fixedly mounted sections with respect to the movably mounted sections; and each said transverse element includes a bowed handle member attached to the movably mounted section; said bowed handle member having one limb thereof extending through a bearing member mounted thereon to support a spar structure of a stretcher.

4. An adjustable frame arrangement to support a stretcher in a substantially horizontal position and hold same against movement comprising, in combination a first transverse bearer assembly; a second transverse bearer assembly spaced from said first assembly in a direction longitudinal of a stretcher to be carried by said assemblies; said first and second assemblies each including a first support section a second support section in telescoping relation to said first section, and spring means connected between said sections to normally urge same toward a contracted telescoped position; first abutment element secured to each of said first support sections, said abutment elements presenting generally vertical stretcher engaging surfaces; a second abutment element secured to each of said second support sections, said second abutment elements presenting generally vertical stretcher engaging surfaces facing toward the stretcher engaging surfaces of said respective first abutment elements; said first sections of said first and second assemblies being secured against movement; said second sections of said first and second assemblies being telescopically moveable relative to said first sections; means to facilitate manually longitudinally extending said second sections relative to said first sections against the action of said spring means; and lock means to secure said sections together in the positions to which they are moved by said spring means.