Abstract: A video processing circuit separates chrominance and luminance signals and processes the same separately from synchronizing information whereby the video signal may be reformed with a selected video level, selected color saturation, and selected chroma hue. The synchronizing information is not reprocessed, but is coupled through the circuit and the other video signal portions are adjusted relative thereto. An output circuit provides a stable output with very low distortion by including a negative feedback circuit having appreciable loop gain. A sync separator circuit also includes a feedback circuit for consistently detecting horizontal sync pulses approximately midrange.
Abstract: A detail enhancing circuit for use with video tape recorders recovers or separates detail from the overall video signal and adds amplified detail back into the video signal. The luminance signal is differentiated and high amplitude transitions are clamped, leaving the detail information.
Abstract: A memory system includes a high-speed, multi-region instruction cache, each region of which stores a variable number of instructions received from a main data memory said instructions forming part of a program. An instruction is transferred to a region from the main data memory in response to a program address and may be executed without waiting for simultaneous transfer of a large block or number of instructions. Meanwhile, instructions at consecutively subsequent addresses in the main data memory are transferred to the same region for building an expanding cache of rapidly accessible instructions. The expansion of a given region is brought about as a result of the addressing of that region, such that a cache region receiving a main line of the aforementioned program will be expanded in preference to a region receiving an occasionally used sub-routine.
Abstract: A self-cleaning building construction comprises apparatus for applying a fine spray or mist of water and/or water and detergent to wall, floor and ceiling surfaces, followed by warm air drying. Floors slope in a direction for removing excess moisture via a drain. Also included are closet apparatus for cleaning clothing, cupboard-dishwasher apparatus for cleaning stored dishes, self-cleaning bathtub apparatus, and self-cleaning washbasin apparatus.
Abstract: A turbulator comprising a strip of metal formed into a generally zig-zag longitudinal extending element for insertion into a fire tube of a furnace which so deflects gases passing through the tube as to break up laminar flow and thus improve heat transfer. The apices at the junctures of the legs of the element, which contact the interior wall of the fire tube, are rounded both longitudinally and laterally of the length of the strip to insure non-scratch contact with the interior wall during insertion and retraction whereby to prolong the life of the tube by eliminating zones sensitive to corrosion.
Abstract: An arch-shaped building structure is constructed from a multiplicity of relatively small but uniform pieces without the use of metal hardware or fasteners and without the use of conventional tools. Overlapping or offset cross members are disposed between substantially parallel stringer members wherein a given cross member supports a given stringer member and in turn is supported between a pair of stringer members parallel to the given stringer member. Ends of cross members offset from the given cross member are supported by said given stringer member, said offset cross members in turn supporting stringer members parallel to said given stringer member. Stringer members are received in upper slots in cross members, while end tabs of the last mentioned cross members are received in upper slots in stringer members parallel to the first stringer members. The weight of the structure places the cross members in interlocked compression such that no fasteners are required for holding the structure together.
Abstract: A paint guard for protecting frame windows or doors, includes a rectangular framework of four right annular frame members which are telescopically interconnected so as to permit the framework to expand and contract in height and width. Flanges at the periphery of the framework are provided for clamping the framework to the window frame upon contractin of the framework around the window frame. A biasing spring mechanism is provided for urging the framework to its contracted position. The central region of the framework is open. A flexible covering contained in rollers is utilized to cover the opening. Locks are provided to selectively lock certain frame members together for certain applications. A method of protecting a framed window or door during painting is also disclosed.
Abstract: In high tibial osteotomy a cross-shaped gauge having downwardly-depending side arms is positioned toward the end of the tibia, with the depending arms adjacent the arcuate path of the proposed saw cut. The cross-shaped gauge establishes a first indicia between said depending arms for positioning the arcuate axis of a semi-cylindrical saw, and a second indicia proximate the upper end of the longitudinal arm of the gauge for locating the saw arc. A saw blade of correct radius is then selected. The first indicia established by the gauge positions a first hole drilled through the bone for receiving a guide pin or rod, and the second indicia locates a second hole on the saw line for receiving a depth gauge. An arm on the depth gauge is aligned with a plurality of spacers placed on the aforementioned pin or rod, and the pin or rod is received along a cylindrical bore in the saw. When the saw is operated, the spacers arrest movement of the saw blade when it has passed through the bone.
Abstract: A telescopic sight apparatus is described having a lens holder tube which is pivotally mounted at one end thereof by means of an improved half socket pivot means for windage and elevation adjustments. The telescopic sight apparatus may be a rifle scope. The lens holder tube contains image erector lenses which may be mounted for longitudinal adjustment to vary the magnification of the scope or may be fixed against longitudinal movement to provide fixed magnification. The half socket pivot mount includes a spherical pivot surface provided on one end of the lens holder tube which is resiliently urged by a socket compression spring into contact with a conical socket surface provided by an internal shoulder on a surrounding housing tube.
Abstract: A mat of the kind having a plurality of first strips of rigid material such as aluminium, and a plurality of second strips of flexible material such as rubber, interposed alternately between the first strips, the first and second strips being secured together side-by-side by connecting means wherein said first strips each comprise an upper horizontal wall and a depending wall connected thereto, the apertures provided in said depending wall, and the or each connecting element extending through apertures in the first and second strips and being of such configuration so as to restrain the upper walls of the first strips from deforming downwardly to any substantial extent when a load is imposed.
Abstract: A two-stage tumbler lock wherein there are two sets of discs, one set being actuatable by a key to free the second set for unlocking movement under the influence of the key. The invention also contemplates a lock designed to receive a peripheral key to cause the above operations.The invention further contemplates a dog leg key particularly a peripheral dog leg key for effecting the above operations.The invention still further contemplates a lock having a peripherally located reset member which makes picking most difficult. A further feature of the lock and its key is that the two coact to perform their intended functions in a manner such that the key cannot be withdrawn from the lock until it is returned to the position it first assumed when inserted into the lock.Another feature of the invention is a disc lock in which the discs have spaced lugs defining the extent of disc movement in regard to a locking member.
Abstract: The specification discloses a method of producing composite building materials from a mixture of plant fibers bonded with portland cement. Plant fibers, cement and soluble silicates in certain proportions are mixed and heated under pressure for a short period to get physically stable product that can be cured under atmospheric conditions to full strength. The plant fibers may initially be pretreated with an aqueous solution containing dichromate or permanganate ion prior to adding the cement to negate the adverse effects of set inhibiting water-soluble compounds in the fiber. Other chemicals may be added to modify the reaction and improve the product.
Abstract: An image enhancer apparatus includes an aperture correction circuit for receiving an input video signal and producing emphasized edge sharpness information for addition to the input video signal as delayed in a signal delay line. The edge sharpness information is generated employing a pair of further delay lines which provide the second derivative of the input signal. A detail enhancing circuit detects large transitions in the video signal and clamps a differentiated delayed version of the video signal at the output of the signal delay line to suppress large transitions while retaining detail information. Outputs of the aperture correction circuit and the detail enhancing circuit are adjustably combined at the input of a coring circuit which selectively removes undesired noise in order to isolate the desired information. The cored sum is added to the delayed video signal.
Abstract: This invention is directed to a sheet molding and in particular a molding that is used to assist in fastening corrugated fibreglass sheeting to supporting objects. The invention is a pre-fabricated section suitable for use in supporting corrugated sheeting comprising a hollow, open-bottom, elongated, body section, the body section having a corrugated top wall and two generally planar side walls; one or more nail receiving openings penetrating the interior of the corrugated top wall; a tongue located at and projecting from one end of the body section, the tongue having at least one pin projecting vertically from the surface of the tongue that corresponds with the corrugated surface of the body section; and at least one opening in the corrugated surface corresponding in size and respective location with the pin located on the tongue at the opposite end, located at the end of the body section opposite the tongue.
Abstract: A floribunda rose variety having a bush which blooms continuously through the growing season; glossy foliage; orange-red blooms which fade to lighter color before falling; little or no fragrance; numerous prickles.