Abstract: In an improved junction box for housing cable connections or the like including in combination a receptacle adapted to house cable connections or the like and having an opening thereinto; a closure lid for releasably closing said opening, said closure lid presenting an aperture therethrough for the coaxial registration therewithin of a screw threaded connector for connecting said closure lid to said receptacle, and a locking terminator coaxially overlying said aperture outwardly of said closure lid which threadedly lockingly co-operates with the screw threaded connector in the region remote from said receptacle so as to isolate access to the screw threaded connector and releasably secure the closure lid to the receptacle; said locking terminator requires a special key so as to allow it to be removed from said screw threaded connector.

Abstract: The invention relates to improvements in lightweight collapsible support structures in the nature of easels, book rests and the like which are self sustaining in a predetermined fully erected configuration, presenting in the fully erected configuration a multiplicity of forwardly facing panels upstanding in a rearwardly inclined or substantially vertical position to provide support surfaces for the displaying, supporting or anchoring of articles such as pads, books or the like and further presenting forwardly extending ledge portions from the bottom edges of such abutment surfaces, said ledges serving to rigidify and stabilize the erect configuration of these structures against collapse, but so adapted as to be foldable into a position allowing for such structures to be compactly folded up and collapsed for storage or for carrying when not in use.

Abstract: An electronic two-directional control apparatus responsive to the capacitance of an external object for generating two electrical outputs simultaneously referable as co-ordinates defining the position of an external object in relation to a control surface, four sensing electrodes of approximately equal capacitance symmetrically arranged into pairs of opposing sensing electrodes within a common plane and electrically insulated from one another whereby sensing electrodes define a control surface and whereby sensing electrode capacitances independently vary in response to the proximity of an external object thereto and are electrically connected to an electrical input in such fashion that only the positive portions of the oscillatory potential are equally applied to each sensing electrode; two pairs of resistors electrically connected to sensing electrodes for continuously receiving discharge currents originating from each pair of opposing sensing electrodes, respectively and whereby each discharge current is a

Abstract: A saw chain including a series of aligned drive link segments pivotally interconnected by a series of aligned connecting link segments in which certain of said segments present integral allochiral cutter tooth portions in selected spaced relation along said saw chain, in which each such latter mentioned segments have associated bearing surface formations located forwardly of said cutter tooth portions and displaceable therewith on common pivot axes to face upwardly and forwardly to mate with link segments located in advance thereof which have integral trailing extensions of selected configuration overlying the bearing surface formations to slidingly engage thereupon during substantial straight-line path of travel, the trailing extensions presenting upstanding portions projecting above the bearing surface formations a selected extent to a limit position below the following associated cutter tooth portions to thereby function as a depth gauge, the latter mentioned trailing extensions being mounted to swing thro

Abstract: In a segmented bar having a longitudinal axis, a first bar section slidably interengageable with a second bar section under longitudinal axially displacement to move into and out of end to end abutting interlocking mating relation, each of said bar sections presenting corresponding longitudinally extending mating surface formations on opposite sides and corresponding longitudinally extending mating edge formations along opposite edges, each bar section terminating in an abutting end edge formation to be presented to the abutting end edge formation of the other of said bar sections when disposed in interlocking mating relation, the opposed surface formations of one of said sections each including a locating recess therein and offset in relation to each other and each bounded by a portion of the extent of its adjacent abutting end edge formation, the opposed surface formations of the other of said sections each including a mating projection for each of said locating recesses and likewise offset in relation to e

Abstract: An improvement in a method for maintaining swimming pool water fit for use and apparatus for implementing same that is cyclical and that requires minimal amounts of treatment chemical, such method including introducing into such body of water an amount of selected accepted inhibiting chemical sufficient to raise the concentration of such chemical to a value within an established range known to destroy or inhibit the growth of any contaminant, then recirculating such body of water until the concentration of such chemical diminishes to a low point; then repeating the introduction step and the recirculation step several times with the cycle completed by the introduction of an amount of the order of twice the amount of the treatment chemical introduced at each preceding introduction step so as to dramatically change or shock the pool environment followed by recirculating such body of water until the concentration diminishes to a low point and then repeating the cycle; the apparatus for dispensing the treatment ch

Abstract: The present invention provides a jewellery clasp in which a latch is formed of a single piece of material folded back upon itself to form a U-shaped spring with an upstanding projection thereon, and a holder is formed of a single piece of material with base, sides and upper catch plate, the latter having an aperture into which the upstanding projection is engaged by the spring to fasten the clasp.