| http://www.w3.org/ns/prov#value | - id wheel exerts a pressure onto the spine to straighten it up while the middle is cut; the improvement comprising:first and second proximity switches mounted at a given distance upstream of the circular saw, said switches being operatively connected to said pressure-exerting means in such a manner as to vary the pressure exerted onto the spine while the middle moves forward relative to the saw, th
|
