Abstract: A fuel tank filter comprises a sack-like filter net member having one portion fitted on and closely fastened to a mounting member mounted on an end of a suction pipe. A shape retaining means is disposed in the net member.

Abstract: A detachable mouthpipe assembly for releasably attaching a mouthpipe having a reduced end portion to a musical instrument having a receiving aperture for receiving the reduced end portion. The detachable mouthpipe assembly includes a substantially U-shaped saddle member attached to the musical instrument and a swivel screw pivotally attached to the saddle member. A slotted arm member is attached to the mouthpipe end engagable with the swivel screw and saddle member.

Abstract: A rotary oil damper comprises a cylindrical body having an engagement projection formed over the entire inner periphery adjacent to its open end and a rotary member fitted in the cylindrical body and having a ring-like engagement projection engaged with the engagement projection of the cylindrical body to retain the rotary member against detachment from the cylindrical body.

Abstract: Ventalation structure for farm storage bins and the like comprising a series of bracing members to hold a bin roof structure above a bin wall structure thereby opening the structure to uniform air circulation. Screening material is provided to prevent bugs and other objects carried by the air from entering the bin and a baffle member protect the ventalation structure from windblown rain and snow. The ventilation structure enables stored commodities to dry faster and minimizes the risk of dust explosions.

Abstract: Composition and method for producing a low-sulphur, free-machining steel, substantially free of lead and including in weight percent about 0.05-0.40 copper, 0.005-0.040 tellurium, 0.002-0.35 bismuth, 0.002-0.05 tin, up to 0.55 carbon, and less than 0.25 sulphur, traces (up to about 0.005 weight percent) of barium, and the balance being iron. The elements bismuth, tellurium and tin are added as a molten alloy to the molten steel and uniformly distributed therethrough. The elements copper and barium can be added separately into the steel stream ahead of the molten addition inflow. The mass is then cooled to provide a solid metal casting substantially free of blemishes and free of surface checking and tearing. The casting is characterized by enhanced machining properties.

Abstract: A cylinder type damper device for damping the opening and closing movement of a storage box includes a cylinder member enclosing air therein, an end cap with a filter therein and a rod reciprocally movably inserted into the cylinder member and provided at its front end with a piston for dividing the interior of the cylinder member into a head chamber and a rod chamber. The rod is moved in association with an opening or closing movement of the storage box. The piston has an orifice formed throughout its entire length in the axial direction thereof and being for interchanging air in the head and rod chambers by the axial movement thereof and also has air holes formed likewise throughout its entire length in the axial direction thereof and provided with a check valve for blocking the interchanging of air between the head and rod chambers in accordance with one directional movement in the axial direction of the piston.

Abstract: There is disclosed a wind indicator for use by a golfer which includes a vane movably mounted on a base for indicating wind direction and a propellor rotatably mounted with the vane and carrying observable indicia which varry in appearance in accordance with the speed of the propeller and thus wind velocity.

Abstract: A fuel injection nozzle for an internal combustion engine includes a valve member which is slidable in a nozzle body. The body is provided with a bore in which is formed a seating and to support the valve member there is provided a sleeve which is an interference fit within a wider portion of the bore. Fuel under pressure is conveyed by grooves defined on the outer surface of the sleeve from a nozzle inlet and the fuel flows from the grooves through slits formed in the sleeve, to a space defined between the valve member and the bore. The pressure of fuel acts on the valve member to lift the valve member from the seating and the slits are sufficiently narrow to retain particles of dirt entrained in the fuel.

Abstract: An improved intake cup apparatus for use in an automated feeding system of the type utilizing feed supply conduits and feed conveyors providing troughs to present feed to caged poultry and the like. The improved intake cup properly meters and directs feed from the supply conduits to the feed conveyors and assures the conveyors will not become over-filled. The physical structure of the improved intake cup apparatus comprises a cup body having openings formed therein to receive feed from a supply conduit and allow a helical auger-like element of the feed conveyor to pass through the cup body and collect feed therefrom. Collection of feed by the auger-like element as it proceeds through the cup is restricted however, by an open-sleeve member partially surrounding the auger within the cup body and a restrictor plate partially covering the remaining auger access. Certain void areas are also created adjacent the auger and thereby assure overfilling will not occur.

Abstract: A pivotal attaching device for a linkage cam lever which is pivotally attached to one end of a rod so that a lever can be pivoted by a shaft. The device is comprised of a securing portion for securing the shaft to one end of the rod, and a forked leaf spring portion including a pair of integrally formed spring pieces connected to the securing portion and maintaining a space therebetween. The securing portion and forked leaf spring portion are integrally molded of plastic with formed openings for receiving and securing the end of the rod, and further including receiving and securing the end of the rod, and further including integral clip portions to maintain the device in a secure fashion around the end of the rod.

Abstract: A device for opening and closing a door hinged to a body includes a pair of bearing recesses formed in a face-to-face relation to each other in opposed inner wall surfaces of the body, bearing pieces rotatably accommodated one each in the bearing recesses, a pair of pivotable pieces provided one of each edge of the door at one end thereof and fitted in the bearing grooves, and a pair of guide grooves formed in a face-to-face relation to each other in the opposed inner wall surfaces of the body and each having one end communicating with one of the bearing recesses and extending inwardly of the body from the bearing recess. Each of the bearing recesses has a surface facing the other bearing recess and having a radial bearing groove extending from the axial center. The door is rotatably supported in the bearing recesses via the bearing pieces. When the door is opened, the guide grooves communicate with the bearing recesses.

Abstract: A window shade construction comprises a first pleated shade member having one end thereof coupled to a first header and a second pleated shade member having one end thereof coupled to an opposite end of the first shade member. Cords are operatively coupled to the header and to the first and second shade members for selectively moving either or both of the first and second shade members between a fully collapsed position and a fuly extended position relative to the window frame.

Abstract: A compact low cost track registration detector for radon gas and radon daughter products includes a housing with a removable closure cap for retaining a strip of track registration material having the property of forming damage tracks along paths traversed by alpha particles. The strip is retained within the housing by integrally formed upstanding ribs located closely adjacent diametrically opposite inner side wall portions of the housing, a first set of ribs forming a pedestal support and second set of longer ribs providing transverse support. A microporous filter impervious to particles and radon daughter products admits only radon gas to the interior of the housing. The apertured closure cap has a central solid portion providing a radiation shield for the upper surface of the strip to enable the lower exposure surface to be readily distinguished after the detector has been retrieved from an exposure site.