A transfer device is provided with: a U-shaped frame including an upper sideand a lower side opposed to each other protrusion members first armsconnected to endportions of the protrusion members second arms pivotally connected to endportions ofthe first arms a first bar member connecting the end portions of the firstarms a secondbar member connecting the second arms a cylinder pivotally grasped by agraspingmember fixed to the upper side a connecting member connecting an end portionof thecylinder and the first bar member an elongated-hole member fixed to the upperside andhaving an elongated hole a third arm fixed to an engagement pin engaged intheelongated hole an arm connecting member fixed to the second bar member andconnected to the other end of the third arm leg portions connected to thelower side anda plurality of wheels fitted to the frame and the leg portions.
