Abstract: Apparatus for separating gaseous mixtures comprising a pair of separator vessels each packed with adsorbent material such as silica gel, activated alumina or molecular sieves or absorbent material such as lithium chloride with serving as separating material, wherein a separating cycle during which air containing water vapor or gaseous mixture consisting of two or more different components such as nitrogen and oxygen is fed into one of the separator vessels to remove one or more components from the mixture and a regenerating cycle during which the processed gaseous mixture is partially fed into the other separator vessel to remove the quantity of components previously adsorbed or adsorbed by the separating material present within this separator vessel and thereby to regenerate the separating material are alternately repeated and wherein there are provided regeneration promoting separator vessels for further removal of the components to a lower concentration.

Abstract: A pressure gage for indicating pressure and variations thereof of a physical variable being monitored. The gage is provided with a circular dial having on the face thereof a pheripheral marginal portion or border green in color and graduations disposed internally of the green peripheral border. A pair of movable arcuate opaque cover plates, each made as an arc of an annulus, are disposed coaxial with the dial and graduations on the face of the dial. The plates are movably mounted for positioning thereof selectively in a circumferential direction of the dial for partially covering the marginal peripheral portion or border of the face of the dial. The plates are positionable selectively so that two opposed ends thereof define a space therebetween so that a green area of the border, which defines a range of selected pressure graduations on the dial, corresponds therewith.

Abstract: According to the present invention, a Bourdon tube and a mechanism adapted to transmit a deformation occurring in the Bourdon tube to an indicator are accommodated within a casing having a window in one side so that the indicator may be visually observed from the exterior through the window, the casing being further provided in the other side with an inlet communicating with the Bourdon tube and with insertion holes for mounting screws, wherein the mounting screws are threaded through the insertion holes into corresponding threaded holes formed in a mounting surface of an associated fluid handling device, aligning the inlet formed in the casing in communication with the Bourdon tube to a gage port formed in the mounting surface of the fluid handling device.

Abstract: An air pressure regulator and an adjusting mechanism for a regulating device such as an air pressure regulator having a value body having a valve element and a diaphragm therein and a spring bonnet. The spring bonnet has a peripheral recess or circumferential groove and a external male thread. The adjusting mechanism has an outer sleeve knob removably mounted on the spring bonnet for rotating a threaded pressure-adjusting spindle or adjustment screw internally of the spring bonnet. The knob has axial internal elastic claws. Each claw has a projection elastically received in the groove of the spring bonnet when mounted in assembly therewith. The claws elastically bias the corresponding projections into the groove and hold the tubular know in axial assembly with the regulator. Rotation of the knob rotates the adjustment screw for adjusting spring pressure of a spring acting on the diaphragm for regulating air pressure to maintain it constant.

Abstract: A detably attaching mechanism for a cup of a lubricator or a filter used with an air-actuated device comprising such cup containing therein a quantity of lubrication oil or filter elements, means to supply a quantity of lubrication oil from the cup into an air stream flowing from an inlet to an outlet or to introduce the air stream through the filter elements contained within the cup, a cover mounted on the cup and a protective cylinder mounted around the cup, characterized by that the protective cylinder is provided on its outer periphery with a locking piece adapted to have its front or top end being outwardly tilted away from the outer periphery of the protective cylinder by depressing its rear or lower end and this locking piece is mounted with interposition of an elastically flexible leg on the outer periphery of the protective cylinder and that the cover is provided in its outer periphery with receiving means adapted to receive the front or top end of the locking piece upon completion of attachment of t