Abstract: An operating mechanism for an electrical switch comprises a drive mechanism; a drive lever having an engaging surface and connected to the drive mechanism for rotation about an axis; an actuating lever rotatable about the axis independently of the drive lever and having a first and a second engagement surface, the first engagement surface engageable with the engaging surface of the drive lever and the actuating lever being rotated when the engaging surface of the drive lever engages and pushes the first engagement surface of the actuating lever; an energy storing means connected in an over-center relationship to the actuating lever for selectively storing and discharging spring energy for opening and closing the the electrical switch in accordance with the rotational movement of the actuating lever; a driven lever rotatable about the axis independently of the drive lever and the actuating lever and having an engagement surface engageable with the second engagement surface of the actuating lever, the driven le

Abstract: A transmission device includes a casing elongated towards a power transfer aperture, a power output member rotatably supported in the aperture by a first bearing, and a power transfer shaft with an outer end rotationally coupled to the power output member and an inner part supported from the casing by a second bearing. The shaft has an axial aperture for receiving lubricating oil and a radial aperture communicating thereto for squirting out lubricating oil radially as the shaft revolves. An oil shield cover has a base mounted to the casing, an extension elongated under the shaft from the base towards the first bearing, an end wall reaching upwards from the end of the extension towards the shaft with the lowest point of its upper edge closely approached thereto at an axial position on the shaft at which its diameter is substantially less than where it is supported by the second bearing.

Abstract: A dog clutch construction is provided for selectively rotationally connecting or disconnecting two coaxially arranged shafts. The dog clutch includes teeth on each shaft which are axially juxtaposed to each other. A toothed sleeve is engaged over the teeth. The sleeve is axially movable from a first position located on only one set of teeth to a second position located on both sets of teeth. A new meshing process is provided for meshing the teeth of the sleeve with the other two sets of teeth. A means for axially driving the sleeve from the first position to the second position is also provided, including an annular power piston positioned coaxially with the sleeve and a mechanism for transmitting the driving movement of the piston to the sleeve.