Abstract: An improved structure of lamp socket in which the socket body consists of two hinged symmetrical halves retained in shape by a hoop; the positive contact metal plate is made of L-shaped configuration mounted in the top of the socket body on the inside and supported between two inside flanges; the negative contact metal plate is a flat plate vertically laterally disposed inside the socket body and having the bottom end stopped at a receptacle inside the socket body.

Abstract: A drying method for removing free water resided on electronic parts such as semiconductors, liquid-crystal display devices and printed wiring boards, optical parts such as lenses and prisms, and precision instrument parts such as gears and lead frames having been subjected to advanced cleaning, surface treatments, etc. and to an apparatus therefor. After an object to be dried (A) is placed in a vessel (1), the air present in the inner space of the vessel (1) is replaced with a heated vapor to heat the object to be dried (A) with the heated vapor, and the introduction of the heated vapor is stopped to cool the inner space of the vessel (1) in such a state that the vessel (1) is sealed from the outer air, followed by introduction of a dry gas to the vessel (1). The vessel (1) has a heated vapor introduction pipe (4), a cooling section (8) for cooling the inner space of the vessel (1), a condensate discharge pipe (14) and a dry gas introduction pipe (7).