Abstract: An apparatus is provided for electrically indexing a rotary component. It includes a housing, a resilient, electrically conductive band contained within the housing and connected to the rotary component, at least two indexing electrical contacts located on the housing internal periphery and in slidable contact with the band, and a bridging electrical contact in connection with the band. The band exerts a biasing force on the housing, thereby maintaining band contact with the housing internal periphery, while also causing a point of separation of the band from the housing. Electrical circuitry is also provided so that once an indexing contact has been selected, the band and the rotary component can be rotated until the band disengages from the selected indexing contact, thus halting further movement of the band and the rotary component.

Abstract: Apparatus for measuring the relative amount of a liquid in a mixture of such liquid with another immiscible liquid and having radiation absorption characteristics differing therefrom includes a chamber for receiving the mixture, a high frequency antenna, an electrically-conductive shield, a cleaning device, and a drive for driving the cleaning device during the normal operation of the apparatus to prevent the accumulation of deposits which may affect the accuracy of the measurement or the need for frequently interrupting the use of the apparatus for cleaning purposes.

Abstract: A process for preparing an abrasive sheet having abrasive particles adhered on a base sheet in monolayer is disclosed, wherein mixed slurry of abrasive particles and binder adhesive is foamed, the foamed slurry is uniformaly painted on the base sheet, and foams formed in the slurry is broken by heating thereby to form the abrasive sheet having good flatness.

Abstract: An apparatus is disclosed for filling a container to a predetermined level with liquid provided from an external liquid supply means. The apparatus includes a main valve and a main valve seat for controlling the supply of liquid to the container. A lower valve housing is provided for supporting the main valve and main valve seat. An upper cap housing is also provided which is in fluid communication between the external liquid supply means and the main valve. Together, the lower and upper housings form a manually releasably connected valve assembly which is removably insertable into the container.

Abstract: An improved apparatus used in a system for filling containers with a required liquid to a predetermined level are disclosed. The apparatus includes an improved main valve means for controlling the flow of liquid through the apparatus and into the container. This improved main valve means includes an improved main valve, an improved main valve seat, and a main valve support.

Abstract: A circuit breaker wherein a linkage transmits movements of a manual operating lever to a movable contact for moving the movable contact against a spring bias into engagement with a fixed contact. The linkage is arranged to hold the movable contact in an "ON" position and a releasable latch couples the linkage and the movable contact. A fault detector can effect release of the latch to permit the movable contact to move under the action of its spring from engagement with the fixed contact independently of movement of the linkage and the lever.

Abstract: A plastic spring loaded shut-off valve for drains in live wells of boats seals without the presence of fluid pressure. This effect is achieved by a biasing spring urging sealing flaps against the valve ports. The flaps are curved and have ribbed edges to accomplish such sealing and prevent jamming of the ports. The biasing spring is secured to a rotating member through slots while the flaps are secured to the member by buttons. The spring and flap are also secured by a bar across the flap, which has a bearing pad where it is contacted by the spring. The rotating member is rotatable on the underside of the valve top screwed to the valve body. Stops on the inside of the valve top limit its rotation.

Abstract: A portion monitor for mounting on a liquid dispensing appratus having a body, a pivotable open and closing mechanism connected to the slidable liquid control stem, a separate control box, the portion monitor comprised of a magnet installed in the end of the liquid control stem closest to said pivotable open and closing mechanism, a Hall effect digital switch supported opposite the end of the slidable liquid control stem nearest the pivotable open and closing mechanism, said magnet energizing said Hall effect digital switch when the slidable liquid control stem is in the open position and turn off said Hall effect digital switch when the liquid control stem is in the closed position.

Abstract: A connector element is described which is suitable for connecting together two components (2a, 2b) in a system which is likely to be subject to vibration. The connector element has an indicating mechanism which provides an easily visible effect to show whether or not the two components are mated. In one embodiment the edges (10a) of a spring (10) protrude from a recessed portion (18a) in a nut (18) at the end of the bolt to indicate the unmated condition. In another form the end of an indicating lever (110) protrudes from a slot (112) in an adjusting nut (180).

Abstract: A novel and unique apparatus is disclosed for use in aerating water held in a container, such as a livewell in a fishing boat. The aeration apparatus receives fresh water through a conventional water distribution system, aspirates ambient air into the water, and discharges the mixture of fresh water and aspirated air within the livewell at a location substantially below its water level. Air is aspirated into the fresh water by means of a housing mounted above the water level in the livewell. The housing includes a main passageway through which the fresh water passes and an aspirating port in the housing wall which puts the main passageway in communication with ambient atmosphere above the livewell. A discharge tube receives the mixture of fresh water and aspirated air from the housing and directs it to a plurality of discharge ports positioned substantially below the livewell water level.

Abstract: A novel and unique apparatus is disclosed for use in aerating water held in a container, such as a livewell in a fishing boat. The aeration apparatus receives fresh water through a conventional water distribution system, aspirates ambient air into the water, and discharges the mixture of fresh water and aspirated air within the livewell at a location substantially below its water level. Air is aspirated into the fresh water by means of a housing mounted above the water level in the livewell. The housing includes a main passageway through which the fresh water passes and an aspirating port in the housing wall which puts the main passageway in communication with ambient atmosphere above the livewell. A discharge tube receives the mixture of fresh water and aspirated air from the housing and directs it to a plurality of discharge ports positioned substantially below the livewell water level.

Abstract: A distribution system for filling a baitwell in a boat includes a low pressure pump and a dual check valve. The fluid flow into the system is divided so that the pressure on the pump is reduced, thus enabling the use of an inexpensive pump. The check valve permits the influx of fresh water without the need for recirculating the existing water in the baitwell and also prevents backflow from the baitwell.

Abstract: An inexpensive fluid flow indicator capable of use in low flow conditions in a variety of environments, including but not limited to laboratory, industry, and medical applications. Flows are visually indicated by the rotation of balls loosely retained in a longitudinal passageway of the indicator's transparent housing by a flow guide and an outlet port. The flow guide imparts a circumferential or transverse direction to the axial flow of the fluid which causes the balls to revolve about the center line of the indicator.

Abstract: A self-adjusting mechanical cable-control apparatus 6 (FIG. 1) has one end 14 of the cable 1 connected to a pedal 3 by a slotted yoke 17 having a transverse coupling member 22 extending through a U-shaped aperture 21 in the pedal. A tubular spacer 23 of rigid thermoplastics extends co-axially of the cable 1 and co-operates with the yoke 17 and a fixed wall 8 to limit movement of the cable 1 toward a member 4 to be actuated by the influence of resilient biasing spring structure associated with the member 4, thereby defining a rest position unaffected by accidental excessive return displacement of the pedal. A saddle 26 of plastics material having a low co-efficient of friction lines the U-shaped aperture 21 and is connected to the yoke 17 by a spring 33 biassing the pedal 3 toward the yoke 17 and a pedal stop 13.

Abstract: A directional drilling tool permits the control of the angle of drilling of a drill bit through the repeated placement or removal of a ball within the mudstream. The ball activates a clutch mechanism within the directional drilling tool. The clutch mechanism, upon activiation, locks the exterior of the directional drilling sub to a fixed angular orientation. Simultaneously, there is activated a deflection mechanism to deflect a drive shaft which is normally fixed in an aligned straight position within the tube body, so as to shift the normally straight aligned shaft to a deflected position, causing the bit and the sub to angle for drilling at a controlled angle of offset from the vertical. The unit is aligned and located using wireline measuring equipment of known design.

Abstract: In a system for controlling a number of central heating boilers of large capacity having means for switching-off each boiler when the flow temperature reaches a predetermined maximum, the temperature at which each boiler is switched on again can be automatically varied in dependence upon the outside temperature in such a manner that as the outside temperature rises the boiler is switched on at progressively lower boiler flow temperatures, thus increasing the length of the boiler cycles. This is achieved by a boiler cycling controller which receives signals from temperature detecting devices located externally of the building and in the water flow and return lines and is operable automatically to vary the point at which the boiler is switched on.

Abstract: A detector device is provided, in particular for detecting faulty needles or closed needle latches in a knitting machine with latch type needles, consisting of a non-electrically-conductive feeler which is normally resiliently urged into contact with the upper parts of the needle hooks, and an electrically-conductive probe which normally does not contact the needles but passes through the needle hook openings as relative movement of the needles past the detector takes place. However, if a needle latch is closed the probe makes contact with it and also if the needle hook is broken or bent the feeler is permitted to move laterally thereby enabling the probe to contact the faulty needle, contact of the probe with a needle completing an electrical circuit which signals a needle fault. For circular knitting machines in which the needles travel past the detector, the detector is associated with a controller that stops the machine when the faulty needle reaches a particular position in the needle travel path.

Abstract: A variable inductance transducer for use in engineering metrology comprises a plunger with a tip and carried in a housing in linear bearings with a core mounted on the plunger within the overall axial length of the bearings, so as to produce an axially compact structure. The bearings can be two separate ball bushings with the core disposed between them.