| (57) A compressor bar is disclosed for keeping papers within document files, e.g. lever
arch files. The compressor bar comprises:
a base (17) having a pair of openings (18) through which the prongs of a document
file can extend and a pair of resilient rods (20', 20'') held within the base and
extending between the pair of openings; the base is elongate and the openings (18)
are spaced apart in a generally longitudinal direction;
an arm (22) including a boss (25) for flexing the rods (20', 20'') at a position between
the two openings, the arm (22) having a bore (23) through which one of the rods (20')
passes so that the arm is pivotable on the rod (22') about a longitudinal axis to
move between a first position in which the boss (25) flexes the rods (20', 20'') and
a second position in which the boss (25) does not flex the rods or flexes them to
a lesser extent; and
two sets of lands (32), each set being attached to the base (17) between the boss
(25) and the respective openings (18); the lands provide a fulcrum about which each
rod (20', 20'') can pitch whereby the flexing of the rods by the boss (25) causes
the spacing between the rods in the openings (18) to alter between a narrow spacing
in which the rods (20', 20'') can grip prongs extending through the openings (18)
and a wider spacing in which the rods (20', 20'') do not grip the prongs.
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