Abstract: A threaded member has an external helical thread 18a presenting a crest 24 of spiral outline whose trailing end is in the form of an abutment 26 for resisting withdrawal from a resiliently deformable workpiece. In a preferred application, the threaded member is a die-cast grub screw S and locates within a hinged plastics furniture fastener F. Advancing the grub screw S by 1/2-turn from its initial position in the fastener F breaks a frangible locating web 28 and allows the abutment 26 to pass an abrupt shoulder 64. This gives a tangible warning to the user that a ridge 12b on the grub screw S is correctly located beneath a head H of an anchor A.

Abstract: The reducing mechanism comprises rings stacked one inside the other, namely an annular planet gear having two superimposed sets of teeth having different numbers of teeth. One set of teeth is engaged with a fixed ring gear formed in the case of the recorder and the other set of teeth is engaged with a freely rotatable second gear carrying a spiral gear engaged with a gear for driving the recording means. An eccentric rigid with the driving cable of the recorder is mounted inside the planet gear and displaces the latter. The eccentric defines a cavity for receiving a magnetized disc of a magnetic speedometer.

Abstract: A radio alarm converter is provided for energizing a radio in response to an alarm signal from a clock, which clock normally provides an alarm signal not usable for energizing said radio. The radio alarm converter comprises a signal conversion circuit coupled intermediate the radio and the clock and responsive to the alarm signal for delivering an energizing current to the radio.

Abstract: A combination vibration damper and fastener comprises head portions of the shape of a suction disc opposed back to back to each other across a space and adapted to collide with two separate panels, shanks extended in opposite directions from the head portions and provided with engaging means, damper pieces extended aslant from the head portions so as to be opposed to each other, and a connecting piece serving to connect the two head portions to each other. Insertion of the opposite shanks into the fitting holes bored in advance in the two panels fastens the two panels as separated by a fixed distance from each other. Vibration arising in one of the panels is absorbed by the damper pieces and prevented from reaching the other panel.

Abstract: A self-threading fastener has circumferentially spaced thread-forming lobes on its thread and with the thread depth at a maximum at the lobes and a minimum circumferentially between the lobes. A lobe in one turn is circumferentially offset from a lobe in an adjacent turn. The fastener is made on roll-threading dies each having grooves sinusoidally varying in depth frm a maximum at one region to a minimum at a second region. The spacing of the regions is equal to a fraction of the thread pitch multiplied by the cosecant of the thread helix angle.

Abstract: There is disclosed a knob control arrangement or system whereby the status of a knob associated with a lock mechanism can be controlled from exteriorly of the lock housing and can be selectively rendered active-operable or passive-inoperable. In this regard, when in the passive-inoperable condition, the knob will merely rotate relative to the housing without imparting force or stress to the lock components. This mode of operation is achieved by providing a knob hub rotatably mounted to the lock housing to which a knob member may be affixed. Interiorly of the housing, the knob hub will move relative to a main cam member used to effect operation of the lock mechanism. The knob control arrangement includes means for selectively interconnecting and disconnecting the knob hub and the main cam member, such that when connected, an active-operable condition is attained, and when disconnected, the passive-inoperable mode is achieved.

Abstract: Electronic circuits are provided for producing an electronic timbre modulation for effecting celeste or vibrato similar in sonic results to the well-known Leslie rotating speaker system. Electronic signals corresponding to audio tones are generated and are modified by appropriate filters. Three controlling oscillators are locked in exactly 120.degree. phase relation to one another and act through three voltage controlled oscillators respectively to modulate three bucket brigade circuits through which said modified electronic signals are passed substantially in parallel. A roving band pass filter further modulates those of said electronic signals corresponding to flute tones to simulate other aspects of a Leslie speaker system.

Abstract: An automatic labeling system is provided for applying an elongate label to a preselected curved surface of each of a plurality of objects which move in succession along a given path of travel past a stationary work station. This system comprises an applying assembly at the work station for applying a label to each of the curved surfaces, a supply and transport assembly for feeding elongate labels to the applying assembly at a controllable speed, a guide roller for positioning the applying assembly relative to each curved surface and a control apparatus for controlling the operation and speed of the transport in a predetermined fashion.

Abstract: A digital signal generating circuit having a control site, a remote digital signal generating site and a two-wire cable connecting said control site and said digital signal generating site. The control site produces various Zener diode trap voltages by switch state combinations. These trap voltages are transmitted to said digital signal generating site through said two-wire cable. A plurality of level sensing units are provided in said digital signal generating site. These level sensing units sense the respective levels of the transmitted trap voltages. A plurality of switching units are provided relating to the respective level sensing units, each for generating one of two logical outputs when the related sensing unit senses a predetermined trap level condition.

Abstract: A tool accommodating interchangeable tool blades comprises a handle for receiving one tool blade in a working position and at least one tool blade in a storage position. A first compartment is defined in the handle for receiving at least one tool blade in a storage position and includes a releasable locking arrangement for releasably locking one tool blade in a storage position. A second compartment is provided in the handle for receiving one tool blade in a working position and includes a second releasable locking arrangement for releasably locking the tool blade in the working position. The tool also includes at least one tool blade including a cooperating locking structure for releasably locking with either of the first or second releasable locking arrangements so as to releasably holding the tool blade assembled with the tool handle in either of the working position or storage position.

Abstract: A binder for panels comprises a main binder part and a wedge member so constructed that the forced insertion of the wedge member into the main binder part causes the split portions formed in the main binder part to spread out and the expansion of the split portions serves to fasten two panels to each other. Into the main binder part set in the perforations formed in advance in the panels, the wedge member can be inserted from either of the outer surfaces of the two panels.

Abstract: A ball bearing for linear motion which is mounted on a track rail having track surfaces. The slide unit includes a body which is provided with track surfaces, ball return holes, and direction changing paths, and thereby, forming circulating paths where groups of balls endlessly circulate supporting a load and rolling between both track surfaces. The slide unit is characterized in that the external contours of track end retainers which form part of the direction changing paths which connect the track surfaces to the return holes and the external contours of side plates which form the direction changing path together with the track end retainers are made so as to be large circular shape in general, and that the portion providing the direction changing paths which connect to the return holes project outwardly in an upwardly inclined direction forming circular ear like shapes, thus providing a bear head like contour.

Abstract: A polymerizable mixture for adhesive bonding is disclosed. The polymerizable mixture comprises a polymerizable acrylic-based material, a polymerizable epoxide-based material and a bifunctional molecular material reactable with said acrylic-based material and said epoxide-based material.

Abstract: A variable reluctance transducer includes a C-shaped assembly defining a magnetic circuit, one limb of the C being longer than the other. The assembly is arranged with its limbs on opposite sides of a movable member. A winding linked to the magnetic circuit is connected to a discriminating circuit including an integrator having a variable bias circuit which ensures that the peaks of the integrator output are in a predetermined relationship to a reference voltage. A comparator compares the integrator output with the reference voltage.

Abstract: A fastener for detachably fastening first and second workpieces together is disclosed. The first workpiece has a through aperture of predetermined shape. The second workpiece has a through aperture of predetermined shape which includes a first small diameter portion having first opposed edges spaced apart a first predetermined distance and a second annularly displaced portion having second opposed edges spaced apart a second, relatively larger predetermined distance. The fastener comprises a base, a first catch portion integral with and extending outwardly from a first side of the base, a second catch portion integral with and extending outwardly from the base oppositely from the first catch portion, and a twistable stem integral with the base for enabling at least one of the first and second catch portions to be twisted for angularly spacing such catch portion for disengagement of the fastener from the aperture of at least one of the first and second workpieces with which such catch portion is engaged.

Abstract: A nipple valve-type waterer is provided for a live stock watering system. This nipple valve comprises a generally cylindrical, tubular valve body of greater diameter than a tubular, water delivery manifold. The tubular valve body is provided in two valve body halves which interfit in surrounding relation with the manifold. The manifold is provided with a pair of coaxially aligned through openings, while a through axial bore in each tubular valve body half is coaxially aligned with one of these manifold through openings as the valve body halves are fitted in surrounding relation to the manifold. The nipple valve also provides a flow path for guiding water from the supply manifold to and through the valve body, and seals are carried in the valve body for preventing leakage between the manifold and the valve where they interfit.

Abstract: A line protector for central office use comprises an elongated housing open at one side for receiving components and a cover for the opening. First and second surge arresters are coaxially positioned within the housing. First and second line terminals are respectively connected to the arresters as is a common ground terminal. The three terminals project from one end of the housing in the provision of coplanar flat pins for plug-in connection with a circuit board edge connector. Means including a test contact in the housing permits use of a test probe to test the lines while the protector is plugged into the connector. A shiftable insulator in the housing is used optionally to interrupt the inside lines at the line terminal pins.

Abstract: There s disclosed a stariway system having a single stringer assembly and tread members which may be attached to a receiving structure by means of pre-existing through bores therein. The system may be adapted to walls having a horizontal curvature as the stringer assembly is composed of individual stringer sections which may be adjusted to allow each of the treads to be splayed along a radius of the curvature to provide a stairway having a constant tread width along the line of travel.