Roleset clamp.01 Verbnet Class: 1 "attach firmly":

Roles:

Arg0:attacher, agent causing attachment


Arg1:thing(s) being clamped

Examples:

from the corpus (-)
``He has clamped on their ankle like a pit bull,'' says Paul Leming, a vice president with Morgan Stanley & Co.
Arg0:	He
REL:	clamped
Arg1-on:	their ankle
ArgM-MNR:	like a pit bull




two explicit things being clamped (-)
John clamped his finger to the board.
Arg0:	John
REL:	clamped
Arg1:	his finger
Arg1-to:	the board




with attributive (-)
John clamped his mouth shut.
Arg0:	John
REL:	clamped
Arg1:	his mouth
Argm-PRD:	shut

All this fuss is probably unnecessary for a low-freq verb. Oh well.