Abstract: A pair of screens are arranged one behind the other and served by a common cleaning rake for the removal of the screenings from both screens in a single operating step.

Abstract: A stove shaped to fit flush with the top and sides of a standard kitchen counter, with the stove designed to burn solid fuel such as wood, coal or trash. The stove is formed of insulated rectangular side walls and an insulated rectangular rear wall, with an insulated rectangular floor mounted at the bottom of the stove sides. The interior is divided into an upper combustion space and a lower ash collection compartment, with a slidable drawer mounted in the lower ash collection compartment to enable ready removal of the burnt ashes. A front door enclosed the ash collection compartment, and a removable top plate provides access to the combustion space.

Abstract: A duplicating stencil comprising a perforated or porous ink-permeable sheet composed of a synthetic resinous film or a metal sheet or film of aluminum or copper. The perforated or porous ink-permeable sheet is coated with a binding agent coating which coating may contain softeners or fillers. On the binder coating there can be applied a coating of hot-seal adhesive which in turn is overcoated with an infra-red light permeable coating. Alternatively, the hot-seal adhesive coating can be applied to a separate sheet of paper, synthetic resinous film or metallic sheet, over-coated with an infra-red permeable coating and placed together with the sheet coated with the binding agent prior to subjection to infra-red rays.

Abstract: A cigarette-filter-making apparatus is comprising a pick-up drum rotatable about its longitudinal axis and provided along its circumference with longitudinally extending retaining grooves for the accommodation of individual filter sections and lateral delivery of them to a laterally adjacent discharge. For ejecting faulty filters the pick-up drum is provided with a guide element extending continuously from the pick-up point to the delivery station and ejector blasting means are provided to blow faulty filter sections out of the drum grooves in their longitudinal direction.

Abstract: An apparatus for controlling the pressure of a gas in a gas line includes a source of liquefied gas maintained at a prearranged gas pressure, an evaporation-inducing device connected to the source of liquefied gas and to the gas line, and a self-actuating valve disposed in the feed line for releasing a gas stream from the source of liquefied gas upon a predetermined pressure in the gas line falling below a prearranged pressure in the source of the liquefied gas, less a pressure loss in the feed line, so that the pressure in the gas line is substantially maintained at the predetermined pressure.

Abstract: The invention relates to a crank drive, particularly to a crank drive for photographic cameras having a crank including a crankpin, and a drawbar pivotable about the crankpin. The drawbar consists of first and second rods connected to one another, and disposed in respective substantially parallel planes, which rods are joined or connected by a hinge having a hinge axis substantially parallel to the crankpin axis.

Abstract: The invention relates to a system for electronic editing of video signals recorded by the diagonal track method on magnetic tape, comprising a rotatable head-wheel including video recording heads and video erasing heads, a head-wheel motor in driving relation with the head-wheel and controlled by a first control signal, moving means operable for moving said magnetic tape between two reels comprising a capstan, and a capstan motor in driving relation with the capstan and controlled by a second control signal, first monitoring means operable for generating a first tachometer signal proportional to the speed of the head-wheel motor, second monitoring means operable for generating a second tachometer signal proportional to the speed of the capstan motor, a source of a reference signal, a comparator coupled to the first tachometer signal and the reference signal and operable for generating the first control signal, generating means coupled to the reference signal and operable for generating a third control signal

Abstract: In a roll film camera, using a cartridge, an alternately actuatable slider-locking and cartridge-latching mechanism, a film-gate adjustment device for releasably pressing against a film gate, and a coupling mechanism operative for activating, and, respectively, inactivating the camera feeding mechanism, are operatively connected to a common mode-changing control operable from the cartridge exterior.

Abstract: A balancing scale or electromagnetically compensated weighing apparatus has an independently actuatable and temperature-sensitive magnetic device for balancing a load member; the magnetic device forms a magnetic circuit, and includes a temperature-sensitive corrective device affecting the circuit in at least two locations, so as to substantially temperature-compensate the magnetic circuit over a predetermined temperature range.

Abstract: A conveying device for conveying liquid from a supply well features an upright wall having one major surface and extending into the well, conveying means comprising a disk rotatably mounted about a substantially horizontal axis and a plurality of separations connected to the disk about the axis, the wall abutting the separations, a portion of the surface of the wall, the separations and the disk defining cells for conveying the liquid along at least part of the wall surface, and an output channel defined in the wall and intercommunicating with at least one of the cells when in a position near the top of the disk for emptying liquid from the cells as they reach the position;Whereby, when the disk is rotated, it will move the separations into the liquid and the cells will substantially retain their liquid contents until they reach the position.

Abstract: A recording device for use in electrostatic reproduction of an image on a recording medium includes a support, two carrier plates juxtaposed relative to each other on the support, covers for the carrier plates, a row of electrodes near one side of each carrier plate, supply leads for the electrodes near each carrier plate on its other side, a plurality of counter electrodes spaced apart from the electrodes, and an insulating layer between the carrier plates. The electrodes and counter electrodes define a gap adapted for the passage of the recording medium.

Abstract: A deformable camera case, alternatively usable as a camera stand, includes a wall in the form of a flexible cushion preferably filled with a plurality of small balls, that constitutes a pliable body capable of adjusting its shape to the contours of an object suitable for supporting the camera in a desired stable position.

Abstract: The invention relates to an automatic control device for a bending machine for use in the production of loops of bar or wire material for concrete reinforcement. The device includes a preselector for preselecting the type of loop required and determines the sense of direction and amount of bending required in that loop-type. Additionally, a selector is provided for selecting the length of each side of the loop of the type selected by the loop-type preselector.

Abstract: A ball joint includes one member having a socket portion which has an internal support surface bounding a cavity, and another member having a mounting portion which is received in the cavity, and has a spherical contact surface that contacts the support surface, and thus mounts the two members for relative pivotal movement about at least two axes. The movement about one of the axes is made easier than about the other axis by providing the support surface with at least one zone which has a center located on the one axis, and which so engages the contact surface as to oppose the relative movement of the members with a higher frictional force per unit area, than the remainder of the support surface.

Abstract: In a roll film camera defining a film track, and having a film-advance distance, provision is made for any bend in the film due to the rerouting thereof over a film rerouting roll, to be rendered harmless by disposing the film rerouting roll at a predetermined distance along the film track from a film inlet edge of a film gate of the camera; the predetermined distance is about equal to the film-advance distance, plus one half the difference between the spacing of the film inlet and outlet edges of the film gate.

Abstract: A scanning device, for use in a magnetic instrument of the type using diagonal track scanning, features a two-part stationary guide drum having a central axis, a head assembly rotatably supported inside the guide drum including a head wheel, a bearing near the head wheel, and a motor operable to drive the head wheel about an axis of rotation, and bearing adjusting means operable to radially move the bearing to align substantially the axis of rotation and the central axis and comprising at least three radially spaced apart adjusting elements, at least one of which is resiliently urged towards the axis of rotation.

Abstract: The invention relates to a cassette for use in connection with a device for printing characters on a surface from the stroke impact of a dye impregnated ribbon such as a typewriter, and features a housing defining an aperture for ventilating a chamber defined therein, re-impregnating means disposed in the chamber and operable for re-impregnating the ribbon dye, and locking means removably engaged with the aperture and operable to activate the re-impregnating means during disengagement of the locking means with the aperture.

Abstract: A device for determining the charge condition of a secondary electric storage battery, and including a digital integrator comprising a pulse generator for producing pulses at a frequency proportional to the magnitude of the instantaneous battery current, and an up-down counter for counting the pulses in a sense (i.e. up or down) dependent upon the battery current direction. A switching arrangement operates to couple selectively the pulse generator or an adjustment pulse generator to the counter, and a comparator controls the supply of pulses to, and the sense of counting in the counter, when the adjustment pulse generator is coupled thereto in accordance with the result of a comparison of the counter setting and of a function signal.

Abstract: A razor comprises a handle and a blade holder supporting at least one razor blade. To employ the blade for a slicing action in addition to the shearing one, an off-center universal joint connects the blade holder to the handle of the razor; a leaf spring attached at one end to the handle and atits free end abuts against the center member of the movable joint and against the blade holder which thus automatically resumes a neutral or normal shaving position. The angle of attack of the blade can be adjusted simply by twisting the handle and the blade, and the universal joint at the same time tilts the blade holder to follow the contour of the face.

Abstract: A displacement measuring system for measuring relative displacements between two members. The second member is free to move relative to the first member along a main guide. The first member has a scale element which tracks the main guide. The second member is coupled to a scanner which moves along its own guide (which may be constituted by the scale element itself) scanning the scale element to provide a measure of the relative displacement. The coupling is flexible in directions at right angles to the direction of relative displacement in order to compensate for tracking errors between the main guide and the scale.An embodiment in which the scale is located off the neutral axis of the scale element the coupling is flexible in a first plane on the level of the neutral axis and in a second plane which includes the longitudinal central axis of the scale and is at right angles to the first plane.