Apparatus for guiding a router to cut grooves for stair treads and the
like
    9.
    发明授权
    Apparatus for guiding a router to cut grooves for stair treads and the like 失效
    用于引导路由器切割用于楼梯踏面等的凹槽的装置

    公开(公告)号:US4769920A

    公开(公告)日:1988-09-13

    申请号:US39696

    申请日:1987-04-20

    摘要: Apparatus for cutting a plurality of generally parallel channels such as the steps and risers in a stringer for a staircase or the shelves in a book case which includes an elongated first, second, third and fourth members. Each member has first and second ends. The second end of the first member is pivotally connected to the first end of the second member, the second end of the second member is pivotally connected to the first end of the third member, the second end of the third member is pivotally connected to the first end of the fourth member and the second end of the fourth member is pivotally connected to the first end of the first member. The first, second, third and fourth members define a parallelogram with pivotable connections at the respective points of connection of the respective members. The angles intermediate pivotally connected members are adjustable by relative pivotable motion between the respective pivotally connected members. The third member includes at least one elongated slot for guiding an associated router to cut an elongated channel and the third member includes apparatus for guiding or indexing the apparatus on a prior cut such as a prior cut for a stair step, stair riser or shelf.

    摘要翻译: 用于切割多个大致平行的通道的装置,例如在用于楼梯的纵梁中的台阶和立管,或者包括细长的第一,第二,第三和第四构件的书壳中的搁架。 每个成员具有第一和第二端。 第一构件的第二端枢转地连接到第二构件的第一端,第二构件的第二端枢转地连接到第三构件的第一端,第三构件的第二端枢转地连接到 第四构件的第一端和第四构件的第二端枢转地连接到第一构件的第一端。 第一,第二,第三和第四构件在相应构件的相应连接点处限定具有可枢转连接的平行四边形。 中间枢转连接构件的角度可以通过相应的枢转连接构件之间的相对可枢转运动来调节。 第三构件包括用于引导相关联的路由器以切割细长通道的至少一个细长槽,并且第三构件包括用于在先前切割(例如用于楼梯台阶,阶梯提升器或搁架)的先前切割的情况下引导或分度设备的装置。