Contact between the projection 8b on the cam gear 8 and the elastic piece 10a of the sector gear 10 offsets {HEAD ~ backward torque} induced by {TAIL ~ the engagement} of the sector gear with the rack 11, and absorbs any mechanical shock 
induced by
Contact between the projection 8b on the cam gear 8 and the elastic piece 10a of the sector gear 10 offsets { HEAD ~ backward torque } induced by { TAIL ~ the engagement } of the sector gear with the rack 11 , and absorbs any mechanical shock
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH