Abstract: An axially non-symmetric article is forged by the first upsetting by means of the first and second punches and by the second die-lateral extruding of a metal bar stock which is extruded via an orifice into an extension space(s) which has a greater cross section than the orifice.

Abstract: A sealed vessel including a cylindrical body portion having an open end, and a cover fitting in the open end of the body portion, said sealed vessel being produced by pressing the open end of the body portion from the outside of the body portion to an outer peripheral surface of the cover provided with at least one of annular grooves around the outer peripheral surface of the cover to air-tightly fix the open end of the body portion and a process for producing the same are disclosed. According to the present invention, it is not necessary to perform any work such as a groove formation on a surface of the body portion but only necessary to provide one or more grooves on the outer peripheral surface of the cover. And in the case of using an electromagnetic force as the means for press-working, a part of the body portion is strictly and air-tightly fixed to the annular grooves at a moment and thus the sealed vessel can be produced with ease and at low costs.

Abstract: A valve inserting apparatus for an internal combustion engine has a cylinder head of the engine supported by a jig such that its surface on a combustion chamber side is positioned facing upward and the longitudinal axis of a valve guide assembled to the cylinder head is kept vertical while a valve is inserted into the valve guide from above. The valve inserting apparatus includes a valve inserting unit for moving upwards and downwards. A valve holding device detachably, swingably, holds the valve with its head portion facing upward. A valve push-in device is provided and a suction device moves into contact with a lower end of the valve guide. The push-in device comprises an upwardly and downwardly movable push rod having a weight attached to the upper end portion. The push rod abuts the head portion of the valve from above.