Abstract: A digital IR gas analyzer comprises a sample cell having a conical shaped interior wall and a filter wheel provided with HC, CO and CO2 interference filters. The filter wheel and IR detector are temperature stabilized. The HC, CO and CO2 gas samples are normalized to a precision reference voltage. The normalized samples are digitized and processed, i.e., for linearization, cross-talk correction and zero drift temperature compensation, by a digital processor. The processed samples are then converted to analog to drive HC, CO and CO2 meters. HC, CO and CO2 gas channels are zeroed simultaneously and calibrated automatically in response to control panel switches.

Abstract: There is provided an improvement in a waste effluent filter of the type including a tank, a generally flat fine mesh screen over the lower portion of the tank to define an underdrain cavity below the screen and a filter bed of particulate material having an upper surface and a lower general surface adjacent the underdrain cavity. The particle size of the particulate material being greater than the size of the apertures in the fine mesh screen. The filter improvement includes a jet creating grid for creating a plurality of upwardly directed hydraulic jets evenly distributed throughout the filter bed during the filtering of the effluent through the bed wherein the jet creating grid includes a plurality of nozzles in the bed itself substantially below the upper surface of the bed and above the fine mesh screen a selected distance to retain the lower layer of the bed undisturbed.

Abstract: A moulding composition which forms stable, durable mouldings which are color stable, have good water resistance and can be glass clear and fire-resistant, comprises a melamine-formaldehyde resole of mole ratio melamine:formaldehyde in the range 1:1.1 to 1:5.0, and from 20 to 80% by weight, based on the resole, of a glycol or glycol derivative. The composition may also contain one or more of water, polyvinyl alcohol, aluminium hydroxide and reinforcing fillers. The melamine in the resole may be partially replaced with urea. Cure of the resin composition, after shaping, takes place at a pH of at least 6.0, and is accelerated by boron oxide and also by microwave heating. Foamed products are especially useful.

Abstract: The magnetic switch is a plastic unit which is made up of a housing containing three pieces, a slideable magnet holder, a bracket, and a plastic leaf spring. The magnet holder and the bracket include keys and notches to provide positive "on" and "off" positions. The housing is aligned with a mercury wetted switch which is capable of handling large current surges without being damaged, whereby the magnet holder is depressed against the spring bias and slid into either the "on" or the "off" position.A hermetically sealed flashlight which includes the magnetic switch is also described. The flashlight comprises a case which is houses dry cells. A screw-on cap which includes a lens forms a hermetic seal when an O-ring is compressed as the cap is engaged.A reflector mount is aligned with the case using a notch and key system which insures the alignment of the mercury wetted magnetic switch and the housing for the magnet holder.

Abstract: A split-inner-ring ball bearing construction is provided with means for feeding proportioned amounts of lubricant from a single source thereof to several different locations in the bearing without using restricting orifices in the lubricant flow paths.

Abstract: Construction for a ball bearing retainer. There is provided a ball bearing retainer comprising an annulus having a plurality of circumferentially spaced ball receiving openings and one or more ball retaining fins extending radially from said retainer, arranged circumferentially therearound and positioned either tangent to, or for minor intersection with, the ball receiving openings. With balls in place in said openings, the outer ends of said fins are then displaced axially of said annulus toward said balls for retaining them in place. Such displacing of said fins may be accomplished by a single circumferentially applied rolling operation or a single press operation. By appropriate modification of the design, one, two, three or four such fins in varying sizes and arrangements may be used.

Abstract: A plurality of valves, including ball valves, regulates the flow of a sterilizing agent to and from a sterilizing chamber. Rotary means connected to a ball valve regulates the flow of the sterilizing agent through the valve. Driving means cause the rotary means to rotate, thereby opening or closing the ball valve at predetermined times. A plurality of switches regulate the driving means, and circuit means connected to the switching means regulate the temperature and pressure in the chamber in timed relation with the driving means. Camming means coupled to the driving means operate the switching means in timed relation with the driving means.