Mowing head with peripheral members for engagement of the cutting line

Abstract

The mowing head ( 1 ) includes: a body ( 3 ), which can be engaged to a motor shaft and defines a peripheral edge ( 3 C); at least one member for anchorage ( 9 ) of a cutting line (F), with an elastically loaded eccentric oscillating element, which co-operates with a surface of contrast fixed to the body for anchoring the cutting line. The oscillating element ( 11 ) projects from the peripheral edge of the body of the mowing head with a knurled edge ( 11 Z), which forms a gripping surface for causing oscillation of the oscillating element and release of the cutting line.

1 . A mowing head for accommodating at least one piece of cutting string, the string being fixedly supported in the mowing head, the mowing head comprising:
 a base plate;   a continuous side wall extending from said base plate with no apertures, said wall defining one clamping chamber with a contrast surface for each piece of string;   a cam for each piece of string, said cam being partially contained in said clamping chamber, wherein a portion of said cam is located outside of said side wall, said base plate and said cam defining a peripheral edge, said cam being manually actuatable from said peripheral edge.   
   
   
       2 . A mowing head for accommodating at least one piece of cutting string, the string being fixedly supported in the mowing head, the mowing head comprising:
 a first base plate;   a second base plate;   a side wall between said first base plate and said second base plate, said wall defining one clamping chamber with a contrast surface for each piece of string;   a cam for each piece of string, said cam being partially contained in said clamping chamber, wherein a portion of said cam is located outside of said side wall, said cam being manually actuatable from a peripheral edge of said side wall.   
   
   
       3 . A mowing head in accordance with  claim 2 , wherein said first base plate is detachably connected to said second base plate. 
   
   
       4 . A mowing head in accordance with  claim 3 , wherein said cam is located between said base plate and said second base plate. 
   
   
       5 . A mowing head in accordance with  claim 2 , wherein said first base plate is non-detachably connected to said second base plate to form an integral mowing head structure. 
   
   
       6 . A mowing head in accordance with  claim 2 , wherein said cam comprises a knurled surface, said knurled surface defining a user contact means for actuating said cam. 
   
   
       7 . A mowing head in accordance with  claim 6 , wherein at least a portion of said knurled surface extends in an outward radial direction from said peripheral edge of said side wall. 
   
   
       8 . A mowing head for accommodating at least one piece of cutting string, the string being fixedly supported in the mowing head, the mowing head comprising:
 an axis of rotation;   a base plate;   a continuous side wall extending from said base plate, said side wall having no apertures, said side wall comprising a contrast surface, said side wall defining one clamping chamber with said contrast surface for each piece of string;   at least one oscillating eccentric cam per piece of string, said at least one oscillating eccentric cam having an oscillating axis, said at least one oscillating eccentric cam being at least partially contained in said clamping chamber, said at least one oscillating eccentric cam being located outside of said side wall, said at least one oscillating eccentric cam being manually actuatable from a peripheral edge of said side wall, said oscillating axis of said at least one oscillating eccentric cam being located in said clamping chamber, said contrast surface and said axis of rotation defining a first radial distance, said oscillating axis and said rotation axis defining a second radial distance, said first radial distance being greater than said second radial distance.   
   
   
       9 . A mowing head in accordance with  claim 8 , further comprising another plate connected to said base plate. 
   
   
       10 . A mowing head in accordance with  claim 9 , wherein said at least one oscillating eccentric cam is located between said base plate and said another plate. 
   
   
       11 . A mowing head in accordance with  claim 9 , wherein said base plate is non-detachably connected to said another plate to form an integral mowing head structure. 
   
   
       12 . A mowing head in accordance with  claim 8 , wherein said at least one oscillating eccentric cam comprises a knurled surface, said knurled surface defining a user contact means for actuating said cam. 
   
   
       13 . A mowing head in accordance with  claim 12 , wherein at least a portion of said knurled surface extends in an outward radial direction from said peripheral edge of said side wall.