公开(公告)号：US4839986A

公开(公告)日：1989-06-20

申请号：US169626

申请日：1988-03-18

Applicant: Debs E. Grantham

Inventor： Debs E. Grantham

IPC: A01G1/06

CPC classification number: A01G1/06

Abstract: A hand-held tool for making grafting-flap cuts in the bark of a tree limb includes an elongated tubular body having an open end for accommodating coaxial insertion of the limb. The end of the body adjacent the open end has a plurality of elongated slots longitudinally disposed in the tubular body. A plug within the tubular body limits the insertion depth of the limb to a preselected distance. A plurality of elongated knife members are provided. The longitudinal axis of each of the knife members registers with the longitudinal axis of one of the circumferentially spaced slots in said tubular body. The knife members are supported by a support ring radially projecting above the outer surface of the tubular body and are disposed in a corresponding plurality of radially projecting circumferentially equally-spaced slots in the support ring. An elastic band is coaxially disposed about the tubular body and engages the other ends of the knife members for biasing the other ends radially inwardly towards the tubular body. The handle end of the body is externally threaded and a collar nut, internally threaded, is adapted for threadably mating with the handle end. The nut has a shoulder angle selected for engaging a cam surface on the other ends of the knife members for applying an outward force thereto for camming the other ends of the knife members upwardly to pivot the knife edges downwardly through the registering slots into piercing contact with the limb.

Abstract translation: 用于在树枝的树皮上进行嫁接翼片切割的手持工具包括具有用于容纳肢体的同轴插入的开口端的细长管状体。 靠近开口端的本体的端部具有纵向设置在管状体中的多个细长槽。 管状体内的塞子将肢体的插入深度限制到预选距离。 提供多个细长的刀构件。 每个刀具构件的纵向轴线与所述管状体中的一个周向间隔开的狭槽的纵向轴线对准。 刀构件由在管状体的外表面上方径向突出的支撑环支撑并且设置在支撑环中相应的多个径向突出的周向等间隔的狭槽中。 弹性带同轴地布置在管状主体周围并与刀具构件的另一端接合，用于将另一端径向向内朝管状体偏压。 主体的把手端部是外螺纹的，内螺纹的套环螺母适于与把手端螺纹配合。 螺母具有选择的肩角，用于接合刀构件的另一端的凸轮表面，用于向外施加向外的力，以向上凸轮以使刀片的另一端向上凸起，以使刀刃向下通过对准槽与穿孔接触 肢体