Abstract: A wire printing head of ballistic type comprises a front guide fixed to a carriage and in which the printing wires are mounted in an axially slidable manner. The electromagnets for actuating the wires have their respective cores mounted inside a tube of non-magnetic material. In order to obtain high heat dissipation, the electromagnet cores and windings are embedded in a resin block which fills the interior of the tube. The exterior of the tube is also provided with a set of cooling fins.The electromagnet armatures are mounted on a rear cover which is connected by a screw to a part of the front guide, which in its turn is housed in a compartment in the resin block. Shims are disposed between the front guide and group of electromagnets, and their number can be varied in order to modify the distance of the ends of the printing wires from the platen.
August 12, 1981
Date of Patent:
October 4, 1983
Ing. C. Olivetti & C., S.p.A.
Contardo Adamoli, Francesco Bernardis, Franco Cretaz, Mario Gaiardo
Abstract: A scroll-type of fluid displacement apparatus is disclosed. The apparatus includes a housing having a fluid inlet and a fluid outlet port. A fixed scroll member is fixedly disposed with respect to the housing and has an end surface from which a first wrap extends. An orbiting scroll member is movably disposed within the housing and has an end plate from which a second wrap extends. The first and second wraps interfit at an angular offset to make a plurality of line contacts which define at least one pair of sealed off fluid pockets. A drive mechanism is connected to the orbiting scroll member to transmit orbital motion thereto. A rotation preventing means prevents rotation of orbiting scroll member during orbital motion of the orbiting scroll member and is comprised of fixed ring and a sliding ring. The sliding ring is slidably connected to the fixed ring and also to the second end plate by keys and keyways.
Abstract: A mechanism for cutting a web of flexible sheet material which is adapted to be used in a dispenser having a feed roller and a pinch roller between which rollers the web passes. A knife is pivotally mounted in the feed roller to swing about an axis laterally displaced from the plane of a radially outward portion of the knife defining a cutting edge which edge is projected outwardly beyond the periphery of the feed roller to cut the web as it passes over the feed roller and cam followers ar carried by the ends of the knife extending beyond the ends of the feed roller with the followers displaced from the pivot mounting axis of the knife. Stationary cams are mounted adjacent the ends of the feed roller with which the cam followers on the knife engage to positively project the knife cutting edge beyond the feed roller periphery and retract the cutting edge upon rotation of the feed roller.
Abstract: A waferboard panel is disclosed and a method of making the panel having a friction surface on at least one side. The friction surface retains the water resistant properties of the panel surface and allows a firm footing when the panel is used in sloped roofs. The waferboard panel has at least one surface being a friction surface comprising a plurality of raised protrusions spaced apart in a predetermined pattern. The process of making the panel comprises the steps of assembling wood wafers coated with an adhesive binder into a mat with a plate, the plate having a surface adjacent the mat with a plurality of indentations or holes therein in a predetermined pattern, and pressing the mat in a press at a high temperature with the plate adjacent the mat to form the wafers into a waferboard panel such that the friction surface of the waferboard panel has a plurality of raised protrusions spaced apart in a predetermined pattern.
Abstract: A magnetic reproducing apparatus includes reproducing operation slider movably mounted on a main chassis. A head lever, which is positioned at approximately a right angle to the reproducing operation slider, is mounted on the reproducing operation slider. A magnetic head is attached to one end of the head lever. The other end of the head lever is linked via a biasing device to the reproducing operation slider or a reproducing button attached to one end of the slider. A regulating device maintains the head lever at approximately a right angle to the reproducing operation slider when the reproducing button is depressed.
Abstract: A waferboard having at least one surface rendered water resistant and stabilized against wafer loss is disclosed. In the past heavy paper overlays have been used on panel surfaces. However, these paper overlays are specially treated non-porous paper and generally have to be specially applied by the addition of a glue. The waferboard of the present invention is formed of wood wafers bonded together in a hot press with adhesive resin and wax, and having a layer of porous paper bonded in the hot press to at least one surface of the waferboard. In one embodiment, the contours of the wood wafers on the surface of the waferboard are transmitted through the layer of porous paper.
Abstract: The present invention comprises a new phenolic-aldehyde based resinous, thermosetting polyol and a method for its production. According to the invention, phenol is condensed using acid catalysis, under freely evaporative atmospheric conditions with a molar excess of aldehyde, in the presence of polyhydroxyl component.
Abstract: A nutritionally enriched and stabilized meat product is prepared by introducing an aqueous colloidal dispersion of insoluble animal protein particles and a binder which sets up at cooking temperatures into the tissue structure of a solid animal meat mass, preferably of the same species. The process can be used to upgrade low quality meat cuts, to increase the yield of meat products, to increase the total protein base of meat products and to reduce cooking losses.
Abstract: A high voltage electrode for a spark discharge device used in cooperation with an opposing roller electrode to roughen plastic sheets. The electrode is formed of a multiplicity of plates, or platelets, aligned edge to edge to form together a knife edge. Individual platelets are removable from an active position, within a holder, to an active position, on a selectable basis. Thereby, the portion of the plastic sheet to be roughened can readily be controlled.
Abstract: A multiple purpose wall mounted adjustable exercise device has an upstanding elongated frame including two upright spaced parallel guide posts and an upper pulley and a lower pulley attached to the upper and lower portions of the frame, respectively. A resistance means operatively connected to the frame provides an exercising force in response to exercising motions of the user. A two-ended cable is trained around the upper and lower pulleys with its ends connected to the resistance means. A grip slidably attached to an intermediate portion of the cable is trained around and between two guide pulleys attached to a carriage that is carried by the frame. Guide pulleys guide the intermediate portion of the cable laterally outwardly from the carriage to provide a working loop for engagement by the grip. The height of the carriage is selectively adjustable relative to the frame. The length of the working loop remains substantially constant when not pulled, regardless of the height of the carriage.
Abstract: Improved composite food products are provided with a moisture impermeable barrier layer at the interface between high and low moisture components. This barrier layer is achieved by providing the high moisture component with dextrin and a hydrophilic polysaccharide gelling agent such as pectin in amounts sufficient to form the barrier layer. This process is particularly applicable to composite products including a dough-based component and a topping or filling of higher moisture content. Examples of such products include jam or jelly filled cookies and pizza sauce/crust combinations.
Abstract: In a picture tube comprising an envelope including a phosphor screen and an electron gun generating an electron beam, wherein the electron beam is deflected by magnetic deflecting fields, the electron gun comprising a triode section and a focusing section along a path of the electron beam, the triode sections being provided with an electrode containing a non-circular aperture having major and minor axes of symmetry, the major axis being parallel to a horizontal direction the focusing section having a means for forming an electrostatic focusing lens having a vertical focal length and a horizontal focal length, said vertical focal length more elongated than said horizontal focal length.
Abstract: A boat hull (10) and its method of construction are dislosed. The hull (10) is formed on an inner layer (12) comprised of a plurality of longitudinally extending planks (16) and an outer layer (14) comprised of a plurality of longitudinally extending planks (18). A groove (24) is formed in the outwardly facing surface of the planks (16). A cord 26 is fitted in the groove 24. An adhesive is applied into the groove (24) in such a manner that the adhesive penetrates the groove (24), passes into the interior of the cord (26) and into the pores or capillary spacing of the wood of the planks (16) in the area surrounding the groove (24). Planks (18) of the second layer (14) are attached to the outwardly facing surface of the first planks (16).
Abstract: Metallic wire card clothing for carding elements is provided by a plurality of wire strips disposed side-by-side, as by helically winding at least two strips abutting each other on a supporting roll element, with each strip having an upstanding portion providing a row of teeth extending along the strip and the front edges of the teeth on each strip defining a common acute angle with the axis of the strip on which they are carried. The common acute angle of the teeth in one row is greater than the common acute angle of the teeth in the adjacent row by more than 10 degrees with preferably this difference in angles being at least 20 degrees and the acute angles for the front edges of the teeth relative to the strip axis being in the range of approximately 40 degrees to 90 degrees.
Abstract: A cardiac prosthesis having an hydraulically actuated compressible blood pump. An actuation chamber adjacent the blood pump receives hydraulic actuation fluid from an actuator pump through a three-way ventricular dump valve to compress the blood pump during systole and eject blood therefrom. During diastole the actuation fluid is permitted to drain from the actuation chamber through the three-way valve into a reservoir.
Abstract: The present invention comprises a tuning detecting circuit, a synchronization detecting circuit, an audio noise detecting circuit, a logic circuit and a muting circuit. According to the present invention, a tuning detecting circuit detects the tuning state (i.e., proper tuning, mistuning and slight mistuning) of the local oscillator. The tuning detecting circuit receives a pair of oppositely phased signals (AFT1, AFT2) from an automatic fine tuning circuit, and generates an output signal indicative of the tuning state of the local ascillator. A synchronization detecting circuit, receiving synchronizing signals and flyback pulses, determines whether the synchronization is maintained; this circuit generates an output signal indicative of the synchronization of the synchronizing signals and the flyback pulses.
Abstract: An evaporative dispenser is disclosed for emitting a vaporized material into the ambient. A battery powered, motor-driven fan forces air through the dispenser housing and across a material reservoir to evaporate and entrain material therein prior to being discharged from the housing. A supply container is supported directly on a reservoir lid and comprises structure which cooperates with the housing to direct the air flow across the reservoir. The supply container also comprises a battery nesting recess which affords compact packaging of the components within the housing. A transparent viewing window is provided for easy viewing of the level of material in the reservoir.
Abstract: A method for the assay of .alpha.-amylase activity, which comprises adding an .alpha.-amylase-containing sample to maltohexaitol or maltohexaonic acid used as substrate, reacting, at the same time or subsequent to the addition, .alpha.-glucosidase with the resulting mixture, and determining the reaction product to assay the .alpha.-amylase activity.
Abstract: A serial printer comprises a carriage 32 movable parallel to a platen 14 and on which there is mounted a printing device 31, for example of the daisy wheel type. The guides 23, 25 on which the carriage slide are mounted on a frame 20 which can turn with respect to the fixed sides of the machine on pivots 16, 17 to allow easy replacement of the daisy wheel. A motor 70 located beneath the roller constituting the platen effects displacement of the carriage along the writing line by means of a steel cable 72 and a series of return pulleys 44, 45, 75, 82. The cable passes through coaxial holes 74, 84 in the pivots of the frame, in such a way that its conditions are not altered when the frame is turned. A unidirectional clutch 86 and a spring 89 coupled to one end 88 of the cable maintain the tension in the cable always constant, while providing a non-yielding anchorage when the motor pulls on that end of the cable.
May 28, 1981
Date of Patent:
July 26, 1983
Ing. C. Olivetti. & C., S.p.A.
Felice Giacone, Raffaele Becchi, Boris Ukmar
Abstract: A modular plastic conveying belt (10) is disclosed. The belt (10) is comprised of a plurality of plastic belt modules (14) releasably connected to one another to form an extended belt. Each module (14) has an upper surface (26), a lower surface (28), a first and a second (16, 18) and extending transversely of the conveying direction of the belt and a pair of opposed sides (22, 24). A plurality of lugs (38), attached to lug bars (30), are disposed along the first end. A plurality of lug receiving elements (32) are disposed along the second end (18) and releasably receive lugs (30) of an adjacent module (14).