Pressurized fluid circuits are provided which are suitable for use in a pressure drop detector for a pressurized fluid fire alarm system. The pressurized fluid circuits are provided as channels in the surface of a block of material and include one channel connected to a source of fluid pressure. The channels are associated with valve regions by means of which, with a diaphragm pressed thereagainst, a required one or more of the channels can be closed off. In its application to a pressure drop de...

In an electronic musical instrument, an actuation of a key switch produces a key address code corresponding to the key switch. This key address code is stored in a key address memory. A tone clock pulse corresponding to the key address code is selected from among a plurality of tone clock pulses. A musical tone wave shape memory stores in analog a wave shape to be reproduced. The musical tone wave shape is read from this wave shape memory at a reading rate corresponding to the tone clock thus se...

A wire tying handtool for forming a wire loop around an article and for twisting together tail ends at a cross-over region wherein the tool has a foot member with abutment faces engaging sides of the tail ends, wire holding means for the tail ends, a mechanism to cause displacement of the holding means away from the foot member to apply tension to the wire for tightly drawing the wire around the article while the foot member urges the cross-over region onto the article, and a handle for turning ...

A connector for establishing electric connections between vehicles, particularly between railroad vehicles is described. Said connector comprises two connection members each of which comprises male contact elements and female contact elements secured to it; a bush provided with holes for housing corresponding male contact elements and slidable axially relative to the corresponding connection member, so as to expose a part of said male contact elements; projecting portion provided on each connect...

A sensor device for ascertaining water content of a petroleum flow in a well-pipeline including a capacitive sensing head between the plates of which the petroleum flows and an electrical assembly to measure the dielectric constant of the petroleum flow between the plates and to provide an output representing said dielectric constant which is indicative of the water content of the petroleum.

A safety closure is provided comprising a container with a circular opening including rim portion and a neck portion extending therefrom to receive a closure and a cap having a rim engaging portion at an open end, at least one of the rim or rim engaging portion having a groove and the other of said portions having a projection to engage said groove, a circumferential rotation being required to move the projection through the groove and permit the rim engaging portion to move into the neck portio...

A spacer cage for rolling bearings is described. The main feature of this spacer cage is that of having deformable projecting portions, arranged for arresting each of the rolling bodies in a first position, which permit to assemble in a most simple and rapid manner one race of the bearing on the remaining part of the same, and seats for holding the same rolling bodies in a second position, which permit to separate from the races of the bearing the assembly constituted by the cage and the rolling...

8-Hydroxyquinoline derivatives of the formula 1 ##SPC1## Where R is hydrogen or methyl X and Y are same or different halogens like chlorine, bromine, or iodine in any two of the position 5,6 and 7 of the quinoline ring are provided according to this invention. These compounds are prepared by reacting a 2-halogeno-5-nitrothiazole and the required dihalogen substituted 8-hydroxy quinoline. The compounds of this invention are useful as potent anti the bacterial, antifungal and antiparasitic agent.

A humidifier for sauna rooms comprises a nozzle connected to a water supply conduit wherein the flow is controlled by a valve, for dispersing a fine water mist into the sauna room. A thermostatic valve member is associated with the nozzle to keep the nozzle closed below a predetermined temperature in the sauna room.

A cinematographic system for a simultaneous projection of different films or movies, comprising two or more exhibition rooms integrally grouped, a common main hall and a common access passageway to the exhibition rooms, a common projection machinery room, a common space for housing electric cables, drainages or similar and an also common space, for air conditioning, heating and the like facilities.