Abstract: An instructional globe facilitates the guided or self-directed study of terrestrial geography. A globe-shaped body is constructed so that major geographical features are represented on detachable appendages. Cues are provided for the proper placement of the appendages on the surface of the globe-shaped body, the cues consisting of niches, embossed or printed shapes, or indentations, unambiguously corresponding to the appendages. The globe-shaped body may be built up from a skeletal framework to hold a number of blocks, the blocks together forming a spherical surface. Appropriate portions of geographical features, or portions of cues, are formed on the blocks. A number of means are shown for attaching the blocks to the framework and the segments to the body. A series of embodiments apply the invention to the problems of teaching geography to students with varying or progressing learning skills.

Abstract: A bent wire spring module provided with spirally-formed attaching elements at its upper end for interengagement with the border wires of a grid frame.

Abstract: An ophthalmologic examination unit comprises a chin rest (31) and a plurality of examination instruments (30, 59, 60) whose position can be laterally adjusted relative to the patient's eyes to be examined and which can be adjusted in elevation. The chin rest (31) and the instruments (30, 59, 60) are attached to a common supporting element (13) which can be vertically adjusted by means of a drive unit (18), such that the examination procedure be rendered as simple and convenient as possible and that the instrument setting be facilitated.

Abstract: A spring assembly wherein there is a rectangular border wire and there are coils disposed in spaced, parallel rows within the border wire. The coils in the rows of coils lap and are connected by helices of wire. The helices of wire connect the adjacent rows of coils, and the coils adjacent the border wire are connected thereto by a helix of wire.

Abstract: A fish product comprising a fillet of fish coated with an edible oil sufficiently to provide surface penetration to the extent to prevent excretion of the juices and exclusion of air and further coated with an adhering layer of crumbs such as bread or cracker crumbs. The thus treated fillet can be cooked immediately for consumption or deep frozen for future use.

Abstract: A spring module for disposition between a base frame and a grid frame of a spring assembly embodying upper and lower attaching elements for attachment to, respectively, the grid frame and the base frame and spaced, parallel, vertically-disposed, yieldable legs, each leg embodying a vertically-disposed loop of wire and upwardly and downwardly, oppositely-inclined, V-shaped lengths of wire extending from the loop to, respectively, the upper and lower attaching elements.

Abstract: A self-aspirating and self-bleeding metering pump comprises a metering chamber having an inlet connected with a predelivery chamber and an outlet connected with a metering point. The predelivery chamber is connected with a metering agent tank through a suction conduit comprising a suction valve and a return conduit comprising a head valve. Furthermore, a diaphragm for predelivering into the predelivery chamber is provided. A metering section of the diaphragm cooperates with the metering chamber for performing the metering stroke and comprises a separate drive serving this purpose. In this manner dynamically stressed sealing members are avoided, whereby the self-aspirating and self-bleeding metering pump is resistent also to the metering of aggressive media.

Abstract: An air filter for combustion engines used in motorized heavy equipment so structured as to be restored to full usage without replacement of the filter elements.

Abstract: A packaging machine is provided having an intermittent foil advance with printing means. During the working cycle of the packaging machine the foil is passed through rotary type printing means for obtaining an improved printing format and generating larger printing formats under narrow space conditions.

Abstract: A flatiron is provided with a plane plate (2) onto which a heating coil (5), a tubular coil (8) as evaporator means, and a capillary tube-sensing element (15) in a tube (14) are soldered. The bottom of the tubular coil (8) is provided with bores (12) in alignment with orifices (12) in the plane plate (2), which serve as outlet orifice for the evaporated fluid. The heating coil (5) and the tubular coil (8) are arranged in mutual heat-conducting contact. The plane plate (2) is connected to a casing element (3) and a handle (4) in a way that there will not arise any thermal bridges between the plane plate (2) and the casing or the handle, respectively. A thermostat for regulation of the temperature of the plane plate (2) is provided with a capillary tube-sensing element (15) leading to a regulating switch means arranged in the handle.

Abstract: A pipe separator (1) comprising a control valve (7) for actuating a sliding valve (4) is provided. In order to increase the service time of the sliding valve by avoiding an unnecessary switching frequency, a two positions-three directions directional valve acting as a damping element is additionally provided.

Abstract: In a packaging machine for packing in packages formed in a material web a printing means having type bars for printing on the material web reciprocally movable between a rest position having a distance from the material web and an operating position, and an inking wheel and drive means for moving the inking means in a direction transversely to the type bars and for applying ink onto the type bars. In order to eliminate the frequent exchange of an ink ribbon the inking wheel is designed such that ink is applied to the type bars only in case the inking wheel is heated to a temperature being above room temperature, and the inking wheel is disposed in a casing which at least partly surrounds the inking wheel and which is designed to be heated and to be moved reciprocally together with the inking wheel.

Abstract: A system of three-dimensional projection comprising in combination a screen and a viewer, said viewer embodying a mask containing see-through slits, means for projecting at least two different perspectives on the screen and means for effecting movement of the viewer to traverse the mask from left to right and from right to left such that from a given vantage point, each of the beholder's eyes sees a different perspective view, each of which is formed by the scanning motion of the screen at a rate such as to provide the illusion of an image continuous in both time and space.

Abstract: A blender wherein the fluids to be blended are compelled to flow through a bed of loosely-associated buoyant bodies.

Abstract: A spring module for use in a spring assembly embodying a base frame and a grid frame comprising upper and lower attaching elements for connecting the module to the base frame and grid frame and a plurality of lower and upper symmetrically-disposed, yieldable legs connecting the lower and upper attaching elements.

Abstract: A bent wire spring module wherein there are upper and lower attaching elements for attachment, respectively, to a grid frame and base frame and vertically-disposed, spaced, parallel legs connecting the upper and lower attaching elements, each leg comprising an arcuate length of wire embodying diverging legs and upper and lower straight lengths of wire integrally connected at one end to the ends of the legs of the arcuate length of wire and at their opposite ends to the upper and lower attaching elements.

Abstract: An excavator for use in tunneling operations wherein there is minimal head room, comprising a boom mounted to a mobile carriage for rectilinear movement in a horizontal plane and angular movement in a vertical plane. A rigid arm is pivotally mounted at one end to the distal end of the boom for angular movement relative thereto and a slide is supported by the arm for rectilinear movement thereon. The backhoe is fixed to the slide and there is linkage for manipulating the backhoe.

Abstract: An examination unit which is particularly suitable as an ophthalmologic examination unit for the examination of a patient by an ophthalmologist, comprises a storage region for an examination apparatus, wherein the storage region is defined by a wall, and an opening in the wall for passing the examination apparatus therethrough from the storage region. In order to ensure an easy transfer of the examination unit to the patient a support frame is provided in the storage region having a pivot bearing with a pivot axis. A swivel arm is pivotable around the pivot axis from a rest position in which the swivel arm is positioned within the storage region, into an operating position in which the swivel arm has the free end thereof laterally swung out of the storage region through the opening. Furthermore, the examination apparatus is suspended at the free end of the swivel arm.

Abstract: A bent wire soring unit for disposition between a base frame and grid frame disposed in spaced, parallel relation to each other includes a lower attaching element for attachment to the base frame and an upper attaching element for attachment to the grid frame. The lower and upper attaching elements are disposed in spaced, parallel planes and transversely-spaced, substantially perpendicular supports connect the lower and upper attaching elements such as to permit the upper and lower attaching elements to move relative to each other in response to pressure applied perpendicularly to the upper attaching elements.

Abstract: Apparatus for packaging particulate product in bags for deposit into cartons of predetermined cross section and height.