Abstract: An apparatus for operating a manhole cover is disclosed which is capable of being applied to an operating hole of any type and accomplishing not only the separation of an edge of a manhole cover from a manhole but the lifting and movement of the manhole cover from the manhole. The apparatus includes a lever-like body and a hanging hook mechanism pivotally connected to a pivot point defined on the point of application side of the lever-like body. The hanging hook mechanism comprises a rod-like insertion member which is adapted to be inserted in an operating hole of a manhole cover and has a projection provided on a lower end thereof to be directed toward the pivot point and adapted to be firmly engaged with an operating hole. The pivot point is eccentric to the longitudinal direction of the insertion member. Also, a point of support on the lever-like body is defined at each of two positions on the lever-like body between a point of application and a point of force.

Abstract: An apparatus for operating and transferring a manhole cover is disclosed which is capable of being applicable to a manhole cover formed with any through-hole type operating hole and preventing the disengagement of the manhole cover from the apparatus. The apparatus includes a lever body having a pair of operating arms. The operating arms each have an eccentric hanging hook pivotally mounted thereon and a press member which is adapted to abutted against a manhole cover to horizontally support it during the lifting operation. The hanging hook comprises a vertical support member pivotally mounted on the operating arm to be pivotally moved in the longitudinal direction of the apparatus and a hanging member connected to the support member to inwardly extend therefrom in a manner to be deviated in the direction opposite to that of a point of force. The apparatus has a manhole cover lifting position which is deviated toward the press member with respect to the gravity line of the manhole cover.