Abstract: A stability compensating circuit of a servomechanism wherein the output displacement of an actuator is controlled, comprising: a signal source generating a reference input signal corresponding to a target value; a first summing amplifier to which the reference input signal and a signal corresponding to the actual output displacement of the actuator are inputted; a primary amplifier to which an output of the first summing amplifier is inputted and which amplifies the output of the first summing amplifier; a secondary amplifier to which an output of the primary amplifier is inputted and which further amplifies the output; a second summing amplifier to which an output of the amplifier is inputted.

Abstract: In an air contamination level detector for detecting the degree of contamination of the intake air to an internal combustion engine, a laser beam is directed through the intake air stream and light scattered from particles in the intake air stream are detected by a photodetector to generate a pulse for each particle. Pulses over a given size are used to enable an AND gate to pass high frequency pulses to a counter, which is periodically recycled. The count accumulated in the counter represents the duty cycle of the pulses and the dirtiness of the intake air. When the count in the counter reaches a preselected level, it causes a warning light to be energized to indicate that the intake air has a exceeded a tolerance level.

Abstract: A lens deflection system (10) for deflecting radiation emitted from a source. The lens deflection system (10) provides for the varying of the index of refraction of system (10) as a function of location and/or time. Incoming radiation may initially impinge on a planar surface (12) forming a frontal face of system (10) and pass internal to a first radiation transmissive mechanism which may be a plurality of prisms (18, 18' and 18"). The radiation may be deflected upon entering prisms (18, 18' and 18") and then may be further deflected upon passage through rear surfaces (14, 14' and 14") upon entrance into base element (28) which may serve as a second radiation transmissive mechanism. By adjusting the indices of refraction of the prisms (18, 18' and 18") and/or the base element (28), the radiation may be deflected in a predetermined manner.

Abstract: An optical position sensor of aircraft comprises light emitting means, an optical block, and a movable magnetic scale disposed in opposed relationship to the optical block. The sensor further comprises first optical wave guiding means connected at its one end to the light emitting means, polarizing means connected at its one end directly to the other end of the first optical wave guiding means and connected at its other end directly to one end of the optical block, and polarization detecting means connected at its one end directly to the other end of the optical block. The sensor further comprises second optical wave guiding means connected at its one end directly to the other end of the polarization detecting means, and opto-electric converting means connected to the other end of the second optical guiding means.

Abstract: An optical position sensor of aircraft comprises light emitting means, first optical wave guiding means connected at its one end to the light emitting means, and polarizing means connected at its one end directly to the other end of the first optical wave guiding means. A Faraday effect element is connected at its one end directly to the other end of the polarizing means and has reflecting means at its other end. A movable magnetic scale is disposed in opposed relationship to the reflecting means and having a plurality of magnetized segments mounted thereon. The sensor further comprises polarization detecting means connected at its one end directly to the other end of the Faraday effect element, second optical wave guiding means connected at its one end directly to the other end of the polarization detecting means and adapted for guiding the light from the polarization detecting means, and optoelectric converting means connected to the other end of the second optical wave guiding means.

Abstract: A tube made of flexible tarpaulins or sheeting as a covering for relatively large objects for the purpose of long-term storage. The tube is provided on the outer circumference with attachments for the application of force to enable the tube to be raised to its proper shape, thus allowing entry of the object. The tube then only requires to be closed at its ends by means of removable clamps.

Abstract: The invention relates to a device for picking off a pressure, particularly of a fluid, and to utilize it either for measuring or for transcodable signals.It comprises a capsule 1 which is provided with an opening 2 and which is closed by a flexible membrane 4, accessible to the pressure to be picked off, with said capsule 1 containing a non-compressible liquid 5.It is characterized in that it comprises compressible elastic means, positioned opposite the opening 2 and exerting a calibrated and invariable counter pressure on the non-compressible liquid 5 to assure the automatic and instantaneous returning of the flexible membrane 4 which closes the opening 2.The elastic compressible means can be formed by an air pocket 7 which may be separated from the opaque non-compressible liquid 5 by a non-compressible transparent liquid 23.The device is especially adapted to the measuring of arterial blood pressure.

Abstract: A machine for forming cardboard blanks into crates (open top containers) for transporting and storing goods, particularly plastic containers of milk. The machine has folding apparatus for folding opposed extended end flaps of the blank back on themselves to form a reinforcing structure including a ledge which, in a formed crate extends inwardly across each of two opposed ends of the crate towards the upper edges of the opposed ends. A first carriage member with suction means lifts a blank from a stack and places it at said folding apparatus. A second carriage member progresses the blank through the folding apparatus to forming apparatus where the goods are loaded onto the blank to form a mandrel and the carton is formed into a crate around the goods.

Abstract: A plastic trowel wherein strength is achieved through use of a blade with a smooth lower side and with handle-retaining members integral with an upper side. Strengthening ribs are disposed on the upper side of the blade. A ribbed handle includes end portions having broad flat areas for contacting the upper face of the blade. Openings in the end portions engage bosses defining the handle-retaining members. The bosses are upset to fasten the handle to the blade. Fastening may be supplemented by cementing or ultrasonic welding the abutting surfaces of the end portions and the blade.

Abstract: A bracket for fixing a prefabricated window to roof boards or sheathing in an inclined roof is already secured to the window main frame during the factory assembling of the window. The presecuring of the bracket is effected by a screw inserted through a hole in a positioning member which through a connecting portion consisting of a bridge and a rodlike member is integrally connected with one side edge of a first leg of the bracket. The first leg continues at its lower side into a second leg at right angle to the first leg. Before packaging the window for transportation the first and second legs are swung into abutment on the main frame by turning around the connecting portion. When the window is to be installed in the roof the first and second legs are swung through an angle of 180.degree. until the first leg abuts against the positioning member. In this position mounting screws are through the overlapping holes screwed into the main frame.

Abstract: In an instrument for measuring the size of particles entrained in a fluid stream, photodetectors are mounted on the walls of tubing shaping the flow of the fluid stream through a laser beam. The photodetectors generate electric current pulses in response to scattering of the light which is generated by the particles passing through the laser beam. The pulses generated by the photodetectors provide a measurement of particle size. The photodetectors are mounted either adjacent to the laser beam on the tubing walls or, alternatively, the tubing walls are mirrored above and below the laser beam and the photodetectors are mounted on the tubing walls at right angle bends of the tubing to receive the light reflected from the mirrored surfaces.

Abstract: In a drug labeling and prescription filing system, a multiplicity of files of data are maintained, each file of data representing in color a graphic illustration of a different prescription drug. When a prescription drug is filled, the corresponding file of data is automatically selected and used to control a color printer to print a graphic illustration of the drug of the prescription on the label applied to the container and containing the prescription data.

Abstract: A hose fitting for sealed connection to a hose, comprising: a first cylindrical member having a small diameter bore portion and a large diameter bore portion connected to the small diameter bore portion; a second cylindrical member axially slidable within the large diameter bore portion and having a radial flange portion and an axial tubular portion extending from the radial flange portion, the radial flange portion being provided with a sealing member and the axial tubular portion being provided with a sealing member; a sleeve provided within the large diameter bore portion and having an inclined surface; a collet provided within the large diameter bore portion and having an outer surface engageable with the inclined surface of the sleeve and radially constrictible when moving axially within the sleeve, the hose being firmly fixed between the collet and the axial tubular portion of the second cylindrical member by axial outward movement of the collet; and a stop member received in the large diameter bore por

Abstract: A lubricating device of a turret type change-over device wherein a plurality of rotating bodies are mounted on a rotatable turret table, comprising: a plurality of bearings adapted to rotate the rotating bodies with respect to the rotatable turret table; a lubricating oil chamber provided in the vicinity of the bearings; and a lubricating oil tank provided within the lubricating oil chamber, the oil tank being rotated in accordance with the rotation of the turret table to retain a lubricating oil therein and supply the same to the bearings.

Abstract: A false twisting apparatus comprising: a pair of first feed rollers for feeding a yarn to be false twisted; a pair of second feed rollers for feeding a false-twisted yarn; a first heating means and a twisting means whcih are provided between the first and second feed rollers in order to false twist the yarn fed by the first feed rollers; wherein first and second stabilizing means for cooling and stabilizing the yarn heated by the first heating means are arranged between the first heating means and the twisting means in the recited order; the first stabilizing means being arranged substantially aligned with the first heating means; an interior angle defined between the first and second stabilizing means and inside the apparatus being more than 90.degree.; and the length of the second stabilizing means being shorter than that of the first stabilizing means.

Abstract: The glazing panel assembled by the method according to the invention includes a frame with webs, supporting blocks and stay blocks, a pane, and sealing strips between the pane and the webs of the frame. According to the method the frame is assembled on the pane using one elastic sealing strip, whereupon the pane is forced against one of the webs, whereby the elastic sealing strip is compressed and the other sealing strip may be fitted freely in place. The force pressing the pane towards the first web is then released, whereby the first sealing strip by transverse expansion forces the pane towards the second web and against the second sealing strip to secure the pane in the frame.

Abstract: A hose fitting for connecting a hydraulic hose to a hydraulic system including an axially inner reduced diameter bore portion and an axially outer enlarged diameter bore portion formed with an inner circumferential groove, comprising: a cylindrical member axially slidable within the enlarged diameter bore portion and having a radial flange portion and an axial tubular portion extending axially outwardly from the radial flange portion; a collet having an outer surface; a sleeve arranged between the cylindrical member and the collet and having an inner inclined surface engageable with the outer surface of the collet, the collet being radially inwardly constrictible when the sleeve is moving axially outwardly, the hydraulic hose being crimped by axial outward movement of the sleeve; and a stop member received in the circumferential groove and adapted to limit axial outward movement of the sleeve and collet.

Abstract: A servo circuit with a failure detection mechanism comprising: a servo circuit for servo controlling on the basis of a control signal an actuator which is connected through a hydraulic circuit with a source of oil pressure and is operated by the hydraulic circuit which is changed over by a servo valve; a monitor circuit arranged in parallel relationship with the servo circuit and generating a monitor control signal; and a failure detection circuit in which the control signal of the servo circuit and the monitor control signal of the monitor circuit are inputted and which detects a failure of the servo circuit on the basis of the control signal and the monitor control signal; wherein the hydraulic circuit is provided with pressure detecting means for detecting a pressure thereof; and the monitor circuit includes a correction circuit in which a pressure signal from the pressure detecting means is inputted and which corrects a loop gain of the monitor circuit in correspondence with a value of the pressure signal

Abstract: A Stud Finder includes a one-piece magnet assembly molded from a moldable plastic material containing a dopant capable of being permanently magnetized along a desired axis. The one-piece magnet assembly includes integral pivot bosses for pivotably supporting the magnet assembly in a location where it can be influenced by the nearby presence of magnetic metals such as steel nails. The plastic material is capable of accepting integral coloring.

Abstract: In an optical instrument for spectroscopically measuring color and gloss of a sample surface, a fiber optic probe is provided wherein light is transmitted from a light source to the probe through a fiber optic bundle. The fiber optic bundle is arranged to illuminate a surface positioned over an aperture in the probe. Light diffusely reflected from the sample surface is transmitted by a second fiber optic bundle to a spectrophotometer. A small fiber bundle is arranged in the probe to irradiate the surface of the sample at an angle of 60 degrees and a second small fiber bundle is arranged to receive light from the first mentioned small fiber bundle after being specularly reflected from the surface. The second fiber optic bundle transmits the received light to a photodetector in the spectrophotometer to provide an indication of the gloss of the sample surface.