The present invention is a structure is simple inexpensive, and provides for the use on a reliable cattle nose tree. One end portion 2a of the A Hanakushi 2, will be by washer 7 attached to the first fitting and the end face is fitted to the insertion hole 3 digits tree 1 by fixing screw 8 and the stopper from the first insertion hole rotatably it makes up around its axis with. As compared with the case where by binary digits trees in the thickness direction is allowed to enter one end of the Hanakushi therebetween to be rotatable, the structure can be simple and inexpensive to provide. Moreover, as compared with the case of a likely structure occurs variation in engagement entrance degree of a pin provided on the radially outer side and the circumferential groove provided at one end of the Hanakushi, high reliability on the usage can be ensured. .BACKGROUND 2【課題】構造が簡単で安価であり、且つ使用上の信頼性の高い牛用鼻木を提供する。【解決手段】鼻串2の一端部2aを、桁木1の第1嵌挿孔3に嵌挿し且つその端面に固定ビス8によって取付けた座金7によって第1嵌挿孔からの抜け止めをするとともにその軸心周りに回動可能に構成する。桁木を厚さ方向に二分してその間に鼻串の一端部を進入させて回転可能とする場合に比して、構造が簡単で安価に提供できる。また、鼻串の一端部に設けた周溝とその径方向外側に設けられるピンとの係入度合いにバラツキが生じ易い構造の場合に比して、使用上における高い信頼性が確保される。【選択図】図2
