Abstract: A thermally compensated mounting flange 10 useful for mechanically attaching equipment to a device which can be operated at a relatively high temperature is disclosed, such as an actuator 32 to operate valve 12. The mounting flange 10 and valve 12 can be made of different materials with unequal thermal expansion coefficients. The mounting flange 10 has a flange portion 14 and one or more legs 16A,16B extending from the flange portion 14 to a distal end mechanically secured to the valve 12. At least one pin 36 can be disposed through an attachment bore 22,24,26 in a leg 16A,16B and into or through the body of valve 12. An open-ended slot 30 is formed from the distal end and terminates at an aperture 28 spaced from a periphery of a leg 16A,16B. Aperture 28 can conveniently serve as a sight hole for inspection of the top of valve 12.

Abstract: A ball valve for use in the pressure acid leaching of nickel ores is disclosed. The valve has a valve body and a ball centrally positioned in the valve body, which has a central passage rotatable in the valve body between open and closed positions. At least one seat is disposed between the ball and the valve body. The ball and seat each comprise a titanium substrate and an ultrafine or nanostructured titania coating. The titania can include from 5 to 45 volume percent of a second phase material that is immiscible with the titania and exhibits corrosion resistance.

Abstract: An improved, one-piece slide clip suitable for molds having at least one cam-actuated slide for pulling a core element outward and inward from the parting line of the mold as the mold is opened and closed, the said slide clip being wholly enclosed within the mold and non-restrictive of the normal and required movements of the mold remains inoperable until such time the slide moving along the cam outwardly is gripped by the jaws of the clip upon the removal of the cam from the slide, during the opening operation, holding the slide in a cam-aligned position, releasing the slide only upon the re-engagement of the cam pin into the slide during the closure of the mold, thereby allowing the slide to return to the molding position in the fully closed mold.

Abstract: An instrument for measuring electrical resistance or reactance comprises a sine wave generator which generates an a.c. signal and reference signals for a phase sensitive detector. The a.c. signal is applied to a decade attenuator which adjusts its amplitude in dependence on a range switching. The signal is passed to a bridge section, wherein it is applied to a component to measure the value thereof. A voltage output, indicative of the value, is fed to a gain block, wherein its amplitude is re-adjusted in dependence on an input from the range switching. The voltage output is operated on by a phase sensitive detector and passes to a digital display. In the reactance mode, set by a function switching, the a.c. signal is phase shifted before being applied to the component, so that the voltage output is in phase with the reference signals.

Abstract: A pressure energizable packing assembly (47) for sealing the stem and valve body of a high pressure valve. The assembly comprises one or more sets (60, 61) of packing rings (62) which are adapted to be compressed between a pair of retainer rings (64, 65) and radially expanded into sealing engagement with the valve stem (45) and valve body (11). The retainer rings are actuated by Belleville springs (70) in a preloaded condition of the assembly and additionally by fluid pressure in the valve body after installation. The packing assembly includes an adapter ring plug (71) for accommodating its connection in the valve body. The packing assembly is assembled as a cartridge and held together by screws (77) which extend through the adapter ring (71), the outer retainer ring (64), the packing ring sets (60, 61) and their separating spacer ring (63), and which are anchored in the inner retainer ring (65).

Abstract: A ball valve having a seat assembly (46) in the form of a flexible metal holder (52) which carries a resin impregnated graphite face seal (54) contacting the ball (28). Flexibility of the holder is provided by a leg (58) thereof which terminates in a free end having an annular lip (62) in sealing contact with the valve body. In a modified arrangement, the upstream seat has an annular space exposed to the upstream flow passage in order to increase the sealing force, while a corresponding annular space of the downstream seat is exposed to the valve chamber to increase its sealing force when the body pressure exceeds the downstream pressure.

Abstract: A fare box for use in a public transport system fitted with a first slot in the upper section of the housing for receipt of coins and fitted with a second slot in the side of the housing for receipt of paper bills. A pair of engaged rollers are mounted in the housing adjacent the second slot with the rollers driven by a pulley from a motor for feeding paper bills, pushed into the slot, into the interior of the housing.