An electrolyzer is disclosed in which the anode plates have their vertical edges flanged and are fixed on separate space tubular frames. Each of the frames comprises two single separate sections and a twinned section between the two single separate sections. Each of the following space tubular frames arranged in the direction of run of the cathode ribbon is longer than the preceding one. Each of the frame sections comprises tubes having bubblers in their lower portions for introducing air to the...

To increase the effective signaling and supervisory range of a central office, a loop extender has tip side and ring side booster circuits, each of which comprise a pair of oppositely polarized floating booster voltage supplies and a loop polarity detector for selectively switching one of such supplies into series with the central office battery. Time constant circuits are associated with each of the loop polarity detectors so that they follow changes in the d. c. polarization of the central off...

An activity toy for small children, consisting of a large circular hoop and a push rod for pushing the hoop so it rolls over a ground, the push rod having a loop at one end to form a handle, the other end having a U-shaped hook for fitting against the rim of the hoop. The hoop periphery rollably supports a weight through a frame and the frane further includes a speed indicator for indicating the speed of the hoop.

A loop lock adapted to engage and retain two adjacent members in fixed position with respect to one another. A resilient body is provided having an arcuate closed end portion terminating in a pair of opposed legs. The legs are normally spaced apart to receive two adjacent members therebetween. An opening is in each leg with the openings being substantially aligned. A stud is provided with a flanged end portion and a body portion which is removably extendable through the openings in the legs unti...

A continuous cooker having a continuous closed-loop cooking chamber which maintains a constant volume of liquid phase material and a constant volume of gas phase material therein. The cooker is provided with a liquid inlet on one side of the loop, and a common gas and liquid outlet on the other side of the loop. The loop is disposed to provide a lower passageway in which a constant volume of liquid resides, and an upper passageway in which a constant volume of pressurized gas resides. The cooker...

In a directional loop antenna, particularly for television receivers, in which a pair of arcuate conductive members are mounted in opposed relation with their concave sides facing each other to define a loop, a dummy load is connected between two of the adjacent ends of the conductive members and output terminals are connected to the opposite adjacent ends, the conductive members are formed with relatively narrow end portions and relatively wide middle portions to increase the frequency band wid...

Novel loop polymers having a polymeric backbone and a plurality of olefinic groups which have been converted to closed loops by reaction with difunctional organic compounds reactive with said olefinic groups, said olefinic groups from which the loops are formed may either be present within the backbone and/or pendent from the polymeric backbone. The loop polymers may also have hydroxy or carboxy groups which can be capped with diisocyanates or epoxies, respectively.

A control loop provided with a control unit for realizing a transfer characteristic having a number of peaks at a fundamental frequency and harmonics thereof. The control unit comprises a memory device for digitally storing a number of samples of the error signal appearing in the control loop during a cycle period equal to the period corresponding to the fundamental frequency. Furthermore, there are provided means for comparing the sample stored in the memory device with the value of the error s...

A key loop for releasably supporting keys on the key head of a key case. The loop is of integral construction and formed of spring metal rod stock and includes an enlarged head for connecting the loop to the key head at the upper end of a shank portion which extends downwardly from the head. From the lower end of the shank, the key loop is reversably curved outwardly and upwardly with its free end terminating adjacent the inner surface of the shank at a substantial distance below the head. The f...

An inductive loop detector which includes a detector which is coupled to the loop by means of a parallel tuned circuit and a receiver which is coupled to the loop by means of a parallel tuned circuit, with the two tuned circuits having different resonant frequencies.