The blade means is slidably engaged in the head portion, and the transmission means has first and second ends which are pivoted to the handles and the blade means respectively, such that the transmission means converts movements of the handles into {HEAD ~ linear movements} of {TAIL ~ the blade means} 
The blade means is slidably engaged in the head portion , and the transmission means has first and second ends which are pivoted to the handles and the blade means respectively , such that the transmission means converts movements of the handles into { HEAD ~ linear movements } of { TAIL ~ the blade means }
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