Abstract: In the field of well drilling, completion and production in the petroleum industry a particular type of retrievable packer is commonly set by the application of "pull-push" force which may be derived from a conventional electric wireline setting tool of the pressurized type. The present invention provides a packer retrieving tool that is capable of effective use in retrieving the abovementioned type packer through use of "pull-push" forces derived from a conventional electric wireline setting tool. The retrieving tool of the present invention additionally includes effective provisions to be utilized in the event of malfunction of the electric wireline setting tool.

Abstract: A seeder cart having draft apparatus and caster wheels arranged to be coupled between draft bars of an agricultural implement, the seeder cart carrying seed and/or fertilizer bins and a metering arrangement to feed the seed and/or fertilizer to distributor points on the implement characterized by a pull head on the seeder cart having withdrawable pins on the pull head allowing the implement to be detached from the draft bar of the seeder cart, the pull head having a universal coupling device between it and the draft apparatus of the seeder cart and the seeder cart having limited movement stabilizer apparatus connecting its rear portion to the draft bars of the implement.

Abstract: Disclosed are indicia display devices that are sunlight readable and which comprise a lens system having one or more body portions each of which provides a transparent internal light reflecting medium interposed between a light receiving surface and a light transmitting surface; a legend plate disposed to receive light from the light transmitting surface, with the legend plate being a laminate made up of mutually bonded elements including one or more filters; and a light source disposed to supply light to the light receiving surface. Various specific configurations of the legend plate are disclosed.

Abstract: The invention provides improved telescopic boom structure for aerial lifts, including the provision of a lower boom structure outer end portion made of electrical insulating material, which together with other provisions, accomplishes the essential elimination of electric shock hazard to personnel without incurring any of the disadvantages of significantly increased expense, reduced effective working area due to reduced range of boom extension, or increased stowed length of the boom structure.

Abstract: Ratchet wrenches of the socket drive type with socket ejector incorporate improved structure and arrangement involving the control knob return means, socket ejector pins and ratchet pawl pivot pin, and assembly technique.

Abstract: Ratchet wrenches of the socket drive type with socket ejector incorporate improved structure and arrangement involving the control knob stub shaft portion, the ejector pin retainer plate, and assembly technique.

Abstract: An improved seed and/or fertilizer distributor of the air-seeder type having a sealed hopper and having a pressure equalizing line communicating between the hopper and a chamber in which is disposed a metering device arranged to have the same pressure on the intake as on the outlet side, with the metering device feeding into a duct opening to the air stream which conveys the seed and/or fertilizer.

Abstract: An agricultural implement for seed planting having a series of independent planter units at the rear of a frame with the planter units connected to the frame in such a manner that the press wheels of the planter units form the rear wheels of the implement, the frame having forward wheels, and the series of independent units are interconnected through common hydraulic means to allow accommodation of ground irregularities without materially changing the downward loading on each independent unit.

Abstract: In a single handle faucet valve of a type wherein a stem is interconnected with a control member so that movement of the stem moves the control member to vary hot and cold water mix and flow rate and wherein the stem includes a stem ball and there is provided bearing means for the stem ball, there is disclosed stem sealing means that is novel and advantageous.

Abstract: The incinerator is made up of an inner housing located within an outer housing and which have spaced apart walls forming an interior space therebetween. The inner and outer housings have aligned upper openings with insulated closure members. A central chamber extends from the upper opening of the inner housing to a lower position for receiving material to be burned. An upper chamber holding a heat activated odor reducing catalyst surrounds the upper portion of the central chamber. A gas collection chamber surrounds the upper chamber and an exhaust blower is provided for drawing gas from the central chamber to the interior space by way of the heat activated odor reducing catalyst and the collection chamber. A heater is provided for preheating the heat activated odor reducing catalyst. A second exhaust blower is provided for drawing gas from the interior space to the atmosphere. A main heater is located within the lower portion of the central chamber for burning the material deposited therein.

Abstract: An emergency lighting unit having physical dimensions and electrical and electronic components and circuitry such that it can be directly substituted for a conventional hot cathode type fluorescent lamp in a conventional fluorescent lamp fixture which incorporates a rapid start type ballast. The emergency lighting unit comprises a direct current power supply in the form of rechargeable batteries, a light source in the form of one or more groups of low voltage high intensity miniature lamps, and electronic circuitry and components utilizing power supplied by the rapid start ballast for charging the batteries, monitoring their condition and reacting accordingly, and detecting the state of the normal alternating current power source and reacting accordingly. In a preferred embodiment, the emergency lighting unit utilizes pulses to detect the emergency or "FAIL" state of the system power. The pulses are supplied by a unique pulser unit which is designed to be directly substituted for a standard wall switch.

Abstract: For an agricultural implement a distributor for feeding seed and/or fertilizer from an air duct to a series of distributor tubes leading to planter units in which the air-entrained seed and/or fertilizer is separated in the distributor to pass some air continuously to the distributor tubes and the remaining air and the seed and/or fertilizer is directed by a rotating deflector to flow sequentially into the series of distributor tubes.

Abstract: A fence formed of hollow fiberglass posts and rails. The posts have apertures formed therethrough transverse to their lengths for receiving the rails. Two hollow rails extend into an aperture from opposite sides of a post with their ends located in the aperture. A hollow connecting member is located within the two hollow rails for connecting together the ends of the two hollow rails. The hollow connecting member has a slit formed through its wall along its length and is compressed such that it may be located within the two hollow rails. The hollow connecting member when located within the two hollow rails expands outward against the walls of the two hollow rails.

Abstract: A gate member has its lower end pivotally coupled to the lower ends of two spaced apart posts for pivotal movement about a horizontal axis whereby the gate member may be moved between an upright closed position and a lower open position. Closing means is provided for normally maintaining the gate means in its upright closed position.

Abstract: A manually operated hair cutting device having a movable spring wire extending through the device. The wire has a base end for engaging one's head to regulate the length at which the hair is cut. The other end of the wire is connected to an activator which is adapted to be moved to forward and rear positions. As the activator is moved forward, the wire is moved through the device such that its base end is moved away from the cutting teeth. When the base end of the wire engages the head, and the activator is moved forward, the device moves upward along the wire. A movable stop normally prevents the handles from being moved together to prevent hair cutting action. An adjustable engager on the activator engages the stop and moves it out of the way as the activator moved forward to allow the handles to be moved together for hair cutting purposes.

Abstract: A hand tool of the type having a closed loop blade. The two ends of the blade overlap each other and are spot welded together. A rectangular shaped hole is formed through the base of the blade. The handle of the tool is formed of two members. The forward member of the handle has a hole formed therethrough with the forward end of the hole being rectangular in shape. The rear end of the handle has a threaded hole formed into the forward end thereof. A carriage bolt is used to secure the two members of the handle together and the blade to the forward member of the handle such that the blade cannot turn relative to the handle.

Abstract: A borehole tool member has an elongated slot with a surrounding seal for engaging the wall of the borehole for sampling fluid from the subsurface formations. A passage extends from the slot through a portion of the tool member to an upper opening which is connected to a conduit that extends to the surface. The seal surrounding the slot is forced against the borehole wall by two pistons located in two cylindrical chambers formed into the tool member. The pistons are actuated for movement outward of the tool member by fluid under pressure injected from the surface by way of a pressure control line extending from the surface to a second passage formed in the tool member and which extends to the two cylindrical chambers. Springs are provided for returning the pistons inward upon release of the fluid pressure in the cylindrical chambers.

Abstract: The invention relates to improved systems and methods for selectively firing perforating guns in well bores and is concerned primarily with the production of a positive confirmation to the effect that each actuation at the operator control station intended to cause a firing of a particular shaped charge did or did not in fact result in the firing of that shaped charge. Such positive confirmation is accomplished by methods which involve the passage of measuring current from a constant current source through certain conductive loops to develop signals that are a function of the conductive loop resistance, the storage and comparison of said signals, and the display of resultant information. Due to certain phenomena, satisfactory measurement results will not be achieved unless a measuring current of substantial magnitude is used. The various parameters involved are treated.