(57) A clamp assembly is provided for securing an ancillary device (16) to a standing
seam (8) interconnecting metal panels (4, 6), the standing seam comprising a protruding
web portion (10) with a head portion (12) at an outer extremity thereof. The clamp
assembly comprises: a body member (54); first and second arms (58, 60) extending from
the body member, at least one of the arms being pivotally interconnected with the
body member at at least one hinge means (62, 64), the first and second arms having
free end regions (70, 72); a spreader member (20) formed with an aperture (22) and
with first and second protrusions (24, 26) on one face thereof; and threaded fastener
means (86) passing through the aperture in the spreader member and engaging in a complementary
threaded aperture (88) in the body member. As the threaded fastener means is tightened
so as to move the spreader member towards the body member, the first and second protrusions
engage with an inner surface of a first end region (74, 76) of each of the arms so
as to urge the first end regions apart and to urge a second end regions together to
clamp against the protruding web of the standing seam.
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