Abstract: A shoe which includes a metatarsal arch support comprising a heel portion; a medial portion extending from the heel portion; and a metatarsal portion extending from the medial portion and terminating in a round metatarsal edge; which support increases in width from the medial portion to the metatarsal edge; the medial portion having a curved transverse cross-sectional shape; and the metatarsal portion having a crescent transverse cross-sectional shape which flattens by way of a wedge-shape into the round metatarsal edge; the metatarsal edge being adapted to be substantially below the joints of the five metatarsal bones to the proximal phalanges.

Abstract: A vibration absorber for a helicopter rotor includes a hub portion, a mass portion encircling the hub portion and a plurality of resilient arms extending in a spaced-apart spiral pattern between the hub and the mass. In operation, the hub portion of the vibration absorber is mounted on a helicopter rotor so as to be rotated with the rotor about an axis of rotation of the rotor, the resilient arms ensuring that the mass is capable of equal resilient deflection in any direction within its plane of rotation whereby the vibration absorber simultaneously reduces in-plane vibration forces of different frequencies.

Abstract: An apparatus for handling of unsealed slit boxes (2) of the type having at least at the bottom thereof two pairs of close flaps (3, 4), and which comprises a cradle-like support (11) in the form of a U-bar which is open at the top and which at the bottom is formed with a guide and lock bar (17) having two lock plates (19, 20) provided spaced one above the other and spaced from the bottom of the cradle support and between which two opposite close flaps (4) at the bottom of the slit box (2) can be introduced and moved in the longitudinal direction of the cradle support while retaining the slit box and preventing the slit box from moving upwards.

Abstract: In a process for the production of alumina which comprises the steps of digesting bauxite to produce a precipitate of alumina trihydrate containing uncombined moisture, drying the alumina trihydrate to reduce the uncombined moisture content thereof, and feeding the dried alumina trihydrate to a calciner to convert the alumina trihydrate to alumina, improved economy is achieved by drying the alumina trihydrate in a fluidized bed in which the fluidized mass is heated indirectly by means of steam which is available from the digestion and recovery system. Drying of the alumina trihydrate in this manner prior to feeding it to the calciner also reduces the fuel requirement in the calciner and enables the throughput of the calciner to be increased.

Abstract: Electromagnetic radiation position detection system and method are disclosed for detecting when a movable object is located at a predetermined position. In a preferred embodiment, polarized microwave radiation emitted from a source fixed relative to the movable object is rotated when the object is in an aligned position and a detector fixed with respect to the movable object and located opposite the fixed source provides a signal when substantially only the rotated, polarized radiation is detected. In one particular embodiment, a plurality of conveyor pans which are part of a car parking tower is the movable object and each pan carries a waveguide which rotates the microwave radiation propagated therethrough. The conveyor pan also has a wheel well with a switch located therein and which, when depressed by the tire of a properly located car on the conveyor pan acts to block the radiation from being detected.

Abstract: The weighing instrument has a receiving tray and an index mark displaceable in front of a fixed dial graduated in weight. It comprises means enabling the user to place, in a position enabling it to operate in association with said index mark, any one of several removable scales which are calibrated, for categories of foods of similar characteristics, in at least one of the magnitudes involved in dietetics and proportional to the weight of the foodstuffs placed on the tray. The instrument is useful in feeding in cases of obesity, diabetes, low calorie, low sugar, low protein, low fat or low residue, etc. diets.

Abstract: The invention relates to devices for displaying a plaque, such as a decorative plate, the devices comprising two members which are interengageable in a number of positions to enable various sizes of plaque to be displayed.

Abstract: A drum type screening machine has a centrifuging rotor within it. A perforated retaining element is carried by the shaft between a feed inlet and an entry region of the drum. The perforations of the retaining element are small enough to retain the foreign bodies which it is intended to retain but larger than the perforations of the screen. The retaining element has an access aperture, a closure element and means for holding the closure element movably in position to close the aperture. The retaining element can be a basket made up of a perforate plate with a perforate rearward flange. The closure element can be a half-moon segment, located by locating pins and rotatable on the shaft with respect to the remainder of the retaining element on clearing the locating means when pressed axially against the force of a bias spring. Use of the retaining element prolongs the screen life so much that tension adjustment become necessary. Provision is made for this to be done from outside of the machine.

Abstract: An electromechanical positioner indicator is provided which comprises first and second relatively movable parts, the first part including two oppositely facing surfaces which are everywhere equidistant and the second part including two surfaces which are everywhere equidistant and which are everywhere equispaced from and lie, closely adjacent to respective ones of the two surfaces of the first part. A first coil, preferably in printed circuit form, is secured to the first part and sensing coils, also preferably in printed circuit form, are secured to each of the two surfaces of the second part. The inductive coupling between the coils is dependent on the relative positions of the parts and thus the output of the sensing coils provides an indication of position. In one embodiment, the surfaces in question are formed by cylinders and in another, the first part is a disc and the main coil comprises an annulus. Particular coil and coil conductor shapes are also disclosed.

Abstract: Clothing made of quilted cloth, without using backing or interlining cloth, with the free cut marginal edges being finished with a flat seam so that the folded edge portions have a plain weave cotton tape interposed therebetween to be machine-sewn in two rows.

Abstract: Hardness testing apparatus, for use in assessing dimensions, from which a hardness value can be determined, of an indentation formed under controlled conditions in a surface of a specimen, having a photosensitive detector for sensing brightness over an image in which the indentation differs in brightness from the rest of the image. The detector produces electrical signals representative of sensed brightness. Discrimination circuitry discriminates signals representative of brightness within the indentation from signals representative of brightness outside the indentation. Correlation of discrimination results provides an assessment of indentation dimensions. Preferably oblique lighting is used to provide enhanced brightness differentation between a multifaceted indentation and other specimen surface features. The oblique light is directed so as to be specularly reflected from a facet of the indentation vertically with respect to the general specimen surface.

Abstract: An austenitic stainless steel which is completely or practically completely austenitic in a hot worked, solution treated state, with properties characteristic for such steel and with a corrosion resistance clearly superior to the AISI 304 type of 18/8-steel, at least on a par with AISI 316 type of acid resistant steel 17/12-2Mo. The steel consists essentially of less than 0.10% C, less than 1.5% Si, between 0.10 and 0.30% Mn, between 17 and 20% Cr, between 6 and 16% Ni, between 2.0 and 4.0% Cu, less than 0.40% N, less than 1.0% Ti, less than 1.5% Nb and less than 100 ppm B, the balance being iron and impurities such as S, P and Mo usually present in steel.

Abstract: Apparatus for application of a band of material onto the side of a circular body of revolution such as a tire. The apparatus includes a rotatable carrier for the body, means for rotating the body on the carrier and band application means adjacent the carrier. The band application means includes means for supplying a continuous band of material in the form of a two layer band which is made up of a first band of material for application to the side of the body and a protective foil covering a surface of the band. Guide means are provided to guide the two layer band from the supply means to the body for application of the first band onto a side of the body, and means are provided for pressing the first band onto the side of the body while the body is rotating.

Abstract: A bath composition which is added to a user's bath water comprising hydrochloric acid, ascorbic acid, protein powder, olive oil, vitamin D.sub.2 and vitamin A is found to cleanse the skin and restore vitamins and protein thereto.

Abstract: An ultrasonic inspection apparatus for the inspection of underwater structures consisting of means for scanning a beam of ultrasound over the surface of the structure at a predetermined angle of incidence, means for receiving and displaying echo signals from the structure indicative of discontinuities within the structure, the action of the display means being initiated by control signals derived from echo signals returning from the surface of the structure, thereby rendering the displayed signals independent of the separation between the scanning means and the surface of the structure.

Abstract: A highway trailer of selectively variable width has two side structures each having at least one longitudinal row of axles provided with ground contacting wheels. Hydraulic jacks are provided for moving the side structures between an inner position corresponding to minimum width and an outer position corresponding to maximum width of the trailer. A hitching pole is rotatably connected to a cross-beam slidably connecting the side structures and controls fluid steering cylinders located symmetrically each between the steering cross-beam and the hitching pole. One pair of auxiliary fluid jacks are connected each to a corresponding one of the steering jacks. Each auxiliary jack angularly moves a corresponding axle.

Abstract: A process and apparatus are disclosed for the treatment of a substance contained in a solution or a slurry.The solution or slurry can be treated to give a fusible dried product by use of microwave radiation.The fusible dried product can be heated and fused by use of microwave radiation.

Abstract: Apparatus for winding stators or the like includes a winding form and a winding nozzle, rotatable about the form, for winding a wire on the form. A collecting tool or transfer tool is provided for receiving windings from the form, a stripper is provided to strip windings from the form onto the collecting tool and a clamping means is provided for clamping a wire between individual winding operations. The apparatus includes means for simultaneously moving the winding nozzle, stripping means and clamping means during the stripping of the windings from the form onto the collecting tool. Thus, the wire from the last-wound windings will be prevented from being drawn to a finer diameter when stripped from the form or it will not be necessary to pull additional wire out of the winding nozzle in which event, on starting the next winding process, there would be a strong jerk which could result in breakage.

Abstract: The process for the manufacture of a plaster product comprises adding a u-formol or melamine-formol resin to a calcium sulphate base powder, the starting powder being constituted by partially hydrated calcium sulphate (plaster alone or with gypsum, or anhydrite with gypsum such as phosphogypsum). The percentage of resin, measured in weight of dry extract of the latter with respect to the weight of the dry extract of the powder to which it is added, is comprised between 1 and 5%. A powder-resin-water mixture is formed by a process of extrusion. The product thus formed is heated to a temperature comprised between 105.degree. and 120.degree. C. Articles having exceptional surface hardness and durability can be formed therefrom by a continuous extrusion.

Abstract: Method of and apparatus for recovering flesh from already filleted fish skeletons wherein before stripping the flesh from the bone by jets of water or air the flesh-bone bond is weakened by heat and by a mechanical treatment using e.g. pommelling heads.