Abstract: An anchoring device for securing a member to a wall, particularly where there is access to only one surface of the wall. The anchoring device employs a toggle plate having a threaded opening therein, with the toggle plate dimensioned to fit into a hole through the wall to which it is desired to secure the member. An elongate engaging element coupleable to the member to be secured to the wall and dimensioned of a size to extend through the wall opening into the toggle plate opening is provided. At least a portion of the engaging element is flexible so that at least a part of the engaging element may be bent into a plane parallel to and in sufficiently close proximity to the toggle plate to permit the toggle plate and engaging element to be simultaneously inserted through the wall opening, with the toggle plate thereafter assuming a position perpendicular to the engaging element and subject to being drawn up on the engaging element against the wall.

Abstract: A material and method are disclosed facilitating the forming of impressions of teeth and/or supporting structures, such as the alveolar ridge to be duplicated and restored. An elastomeric impression material, preferably subject to photochemical or chemical curing, is provided, such for example as formed from polyesters, polyethers, polysulfides, silicones, and ethylene imines, or derivatives thereof, containing a filler material, such as talc, calcium carbonate, colloidal silica, glass, quartz, acrylates, etc., and impregnated with a hemostatic agent such as a vasoconstrictor or astringent or the like with the impression material serving to maintain subgingival tissue in a retracted condition without bleeding, so as to permit an impression to be taken of a tooth surface area and volume extending below the gumline, without requiring use of gum retracting cords or bands.

Abstract: Means are provided for continuous filtration of foreign matter from a fluid stream, without requiring a discontinuance of filtration to clean filter surfaces. The apparatus alternately directs the fluid to be filtered to one or another of a plurality of filter compartments, each containing a filter medium. Sensing means are provided to sense the condition of filter clogging in the compartments, and diverting means are provided to divert the flow of fluid to a compartment having a relatively clean filter, when a clogging condition is sensed. Thus, the fluid stream is always directed to a filtering compartment having relatively clean filter media therein. Additionally, means are provided for cleaning the filter medium in a compartment not being used.

Abstract: A crushed ice making method and apparatus in which water is introduced into the upper end of a tubular column open at the top and having a constricted air inlet at the lower end into which air is introduced in counterflow to the water. The column is positioned in heat exchange relationship with a refrigerant flow path, and the temperature of the refrigerant in this flow path is selectively controlled to either freeze the water in the column or thaw any ice formed therein to free the ice from the column side walls to effect ice harvesting. When ice of desired thickness has formed in the column, the air inlet is closed off by the ice, causing a pressure build-up in the air supply line. This pressure is sensed and employed to actuate control means causing hot refrigerant to flow in the refrigerant flow path in heat exchange relationship with the column to free the ice in the column from the side walls thereof, at which time the air pressure acts to force the ice upwardly out of the column.

Abstract: A log shaping machine for cutting logs to a desired diameter and for cutting off root outgrowths, has a cutting ring with inwardly pointing tools which rotate with the ring. For the purpose of changing the effective cutting diameter of the tools the ring is rotatably supported on a gyratory frame moving generally parallel to itself so that each point of the gyratory frame moves periodically on a circle while the orientation in space of the gyratory frame is maintained. This gyratory motion of the gyratory frame may undergo adjustment in size by changing the radius of the said circle within the range from zero up to a maximum value by means of adjustable eccentrics on which the gyratory frame is suspended and which are also used for driving the gyratory frame.

Abstract: A light transmitting system for an automobile headlamp having a real light source, means for a light channel and an elliptical reflector for concentrating the radiation from this source on the end of the light channel provided with a plurality of reflecting facets. The light channel is formed by a single transparent bar arranged horizontally and transversely with reference to the direction of illumination. The front of the bar is formed as a vertical light output face and the rear of the bar has a series of vertical steps defining a series of oblique vertical reflecting facets thus constituting as many virtual light sources. These facets are arranged in optical co-operation with lenses having axes parallel to the direction of illumination so that these lenses project images corresponding to the facets in the direction of illumination in order to form an assembly of elementary light beams merging into one single beam.

Abstract: A facebow for use in orthodontic procedures is provided with relatively universal adjustability to permit use of a single size of facebow in mouths of a variety of different sizes and further facilitating selective unilateral movement. To this end, the facebow is formed with a conventional outer bow for securement to a cervical elastic strap or head gear; and an inner bow contoured to fit into the mouth of the patient along the dental arch, preferably approximating the molars. The inner bow is secured to the outer bow, and the inner bow is formed with at least a pair of mesial loops arranged to lie along the surface of the teeth over which the inner bow is positioned.

Abstract: An electric guitar transducer mounting permitting rapid interchange and replacement of transducers in an electric guitar. An electric guitar of any desired contour is formed with an opening extending from the front face through to the back of the guitar body, with this body opening dimensioned to accommodate any one of the generally available transducers (pickups) employed with electric guitars. A sleeve is formed dimensioned to fit within the guitar body opening, and provided with an entry opening from the back of the guitar body to receive a module containing a transducer. The sleeve is formed with electrical terminals engageable with the module and electrically coupled to the wiring in the conventional electric guitar body. The module is formed with a selectively removable top plate engaging and securing a given transducer in the module for selective positioning in the sleeve.

Abstract: A method, apparatus for forming, and article formed of folded, relatively rigid sheet plastic material (e.g. polyolefin is disclosed). A hinging membrane forming a flexible fold line provides stress-relief indentations in the sheet material so that the tensile and compressive strains normally produced when bending the sheet material at the folds are substantially relieved, thereby permitting efficient production of a variety of sheet plastic articles, such as folding containers and the like.Two embodiments of the invention are disclosed.In one embodiment, the stress-relief indentations are simultaneously formed on opposed surfaces of the sheet material at the desired fold line by an apparatus having an unheated die containing a scoring blade mounted for movement against the material to be scored, which is supported on a hard and polished platen, with the plastic sheet material arranged between the scoring blade and platen.

Abstract: A valve in which a member is movable within the valve body so as to open and close access to a passage within the valve, and, when the movable member is closing access to the passage within the valve, a sealing member is engaged between the movable member and an end wall of the passage. The sealing member is made of a flexible but non-resilient material, and elasticity is imparted by means of a resilient member which causes the non-resilient material to be forced into engagement with the end wall. Limits are set for relative movement of the end wall and the movable member to prevent damaging flexure of the non-resilient material.

Abstract: Apparatus for filtering air discharged from a cotton gin, so as to minimize the likelihood of contamination of the ambient atmosphere by airborne particulate waste from the gin. The exhaust air from the gin is fed to a housing containing, as initial filtering means, an inertial classifier in which relatively large particulate matter is screened from the air and dropped by gravity to the bottom of the housing below the inertial classifier screen, where it is collected and discharged, preferably by a compacting screw conveyor. A major part of the air along with entrained relatively smaller particles of foreign matter is passed through the inertial classifier screen.

Abstract: A nozzle mounting for the stripper nozzle employed for cleaning the filter media of rotary drum filters. The improved mounting is formed by a stripper duct having a stationary portion and a traversing portion telescoping with respect to said stationary portion, and mounted adjacent the drum filter along a line parallel to the axis of the drum filter. The traversing portion of the duct is coupled to and supports a plurality of equally spaced nozzles, and this traversing duct portion is mounted for reciprocation a distance equal to the spacing between the nozzles so that upon reciprocation of the traversing duct portion, each nozzle will be moved across the media surface rotating with the drum to strip waste therefrom, so that all areas of the media will be cleaned.

Abstract: Method and apparatus are disclosed for eliminating or minimizing air borne dust, fly, lint and the like particulate matter, and static accumulations thereof generated by the movement of sliver into the coiler trumpet of a sliver coiler. Coiler head cleaning is accomplished by confining an air flow path over the head of the coiler and establishing an air flow stream along said path to entrain dust, fly, lint and the like particulate matter released by the sliver moving into the coiler trumpet. Apparatus is provided comprising an enclosure confining a volume of air over the coiler head, with an opening leading into the enclosure through which air flowing across the trumpet is admitted. A suction connection is formed in the enclosure remote from the air inlet with air flow established in a path through the enclosure between the air inlet and the suction connection.

Abstract: An automatic ice making machine employing a compression refrigeration system permitting utilization of a single compressor and condenser coil to provide cooled liquid refrigerant for one or more remote evaporator coils, each evaporator coil arranged in heat exchange relationship with a separate group of ice forming cells. A pressure responsive timer terminated control system is employed to control the cycle of operation of the ice making machine. The control system is relatively inexpensive in production and maintenance and acts to implement the operation of the evaporators in a desired flooded condition insuring the attainment of a relatively uniform cooling gradient across the ice forming cells.