Abstract: The combination of a writing instrument such as a ballpoint pen having a pushbutton at the upper end and an advertising device wherein the advertising device is supported on a sleeve preferably in a freely rotatable manner with the pushbutton being received within the sleeve and secured thereto so as to position the advertising device upwardly from the pen upper end whereby the advertising device is readily viewable by an observer, a depression of the advertising device thereby producing a concomitant depression of the pushbutton to extend and retract the writing tip of the pen.

Abstract: A modular drill jig and method of making same, characterized by parallel base, tool and bushing plates which have precision machined flat and adjacent right angle edge faces defining orthogonal reference planes and axes for aiding in fast, precision lay out of the locations of drill guide bushings and other tooling in the drill jig. The plates are removably assembled in modular fashion on common guide posts. The bushing and tool plates are movable relative to each other for clamping a part to be drilled between opposed parallel clamping faces of such plates. In the manufacture of the drill jig, the adjacent right angle edge faces on the plates enable fast and precision lay out of bores for the guide posts in the plates, such precision lay out ensuring proper vertical alignment of the plates and enabling the desired movement of the tool plate without binding thereof on the guide posts while maintaining the opposed clamping faces of the bushing and tool plates parallel.

Abstract: A device which is designed to save electrical energy expended by a regular rapid start fluorescent lighting fixture having a plurality of lamps, or tubes, and a conventional ballast. The device comprises the combination of a step-up transformer, a resistor and two capacitors, all of which are mounted externally of the ballast. The device is wired in series with the ballast and one of the lamps to allow normal ballast voltages to be delivered to the lamp circuit, thereby eliminating any detrimental effects to the lamps or ballast. At the same time, the current to the lamps and consequent consumption of power by the lamps is substantially reduced to save electrical energy while providing a reduced, but uniform level of illumination.

Abstract: A non-light emitting insert for a fluorescent lighting fixture is used in place of a fluorescent lamp to complete a plural lamp ballast circuit so that the ballast is effective to illuminate properly any remaining fluorescent lamp coupled therein. The insert appears externally as a conventional fluorescent lamp including end electrical terminations that fit in the sockets of a fluorescent lighting fixture, and to an extent the insert duplicates the electrical effect of a lamp in a two lamp ballast circuit. Using the insert a reduction in the light output and a substantially corresponding reduction in consumed electrical power are achieved for a plural lamp fluorescent lighting fixture arrangement while at the same time the components of the ballast circuit are operated at reasonably normal electrical and temperature levels.

Abstract: A lock nut, which is relatively free running as it is screwed onto a male threaded member, provides a two-way locking action as it is tightened to abutment with a confronting load bearing surface, with the result that a breakaway torque that is a high percentage of the applied locking torque must be applied to loosen the lock nut. One or both ends of the lock nut have an annular dish shape commencing at the relatively high corners at the juncture of adjacent pairs of wrenching side faces and recessing into the body toward the threaded bore therethrough. The corner high points are thus relatively thinned for biting and spreading into the confronting surface to provide one locking function, and the corner high points also act as fulcrum points to obtain early torque transfer from the outer edges to the body of the lock nut over a large number of threads for controlled bending of the body to bear radially into locking engagement against the male threaded member.