Abstract: The bow string release includes a pair of sear elements which move in a substantially linear motion relative to one another between open and closed position in response to movement of a latch which pivots into and out of latching engagement with each of the sear elements.

Abstract: A trash clearing brush unit for use ahead of a planter unit including a pair of circular brushes rotatably mounted to a vertical support bar and angularly inclined toward one another. The support bar is attachable to a planter unit and vertically adjustable with respect thereto.

Abstract: A reversible plow comprising a three point hitch, a pivotally mounted tool bar provided with a plurality of adjustable plow gangs, and gauge wheels wherein said tool bar can be shifted from left of center to right of center, and back, by a hydraulic piston such that the plowed ground can be directed in a desired direction.

Abstract: The bow string release includes a pair of sear elements which move in a linear motion relative to one another betweeen open and closed position in response to movement of a latch which pivots into and out of latching engagement with each of the sear elements.

Abstract: The invention relates to a soil working device, comprising a substantially cylindrical soil working member, which is mounted between two main supporting arms for rotation about a substantially horizontal axis and is axially composed of a number of sections which are mutually connected and connected with two shaft end sections journalled in said main supporting arms respectively through couplings of the universal type, the coupling between each two sections being supported by an auxiliary supporting arm which extends into the travelling direction and pivotally engages a connecting bar extending between said main supporting arms parallel to and in front of said soil working member.

Abstract: The disclosed planting apparatus includes a frame fixedly attached to a transversely extending tool bar. Secured to the tool bar and extending rearwardly therefrom is a platform on which the seed hopper and herbicide container are mounted. Seed from the hopper is dispensed downwardly to a seed metering device which deposits seed at uniformly spaced intervals into a furrow formed by a pair of furrow-opening discs and a shoe associated therewith, the shoe packing or compacting the soil at the bottom of the furrow formed by the discs. Playing an important role in the invention is a walking beam system which mounts a pair of gauge wheels for independent movement relative to each other and also relative to the furrow-opening discs and shoe. Also supported by the walking beam system is a pair of furrow-closing or press wheels, the pitch of which can be adjusted for varying soil conditions.

Abstract: The invention is directed to an apparatus for treating soil by breaking up soil clods and compacted earth. The apparatus includes a carrier frame angularly maneuverable in relation to the longitudinal or forward direction of movement of the apparatus, and in which are mounted at least two rotating parallel helical blade elements, of which at least one rolls on the ground. Each of the helical elements, whether of the same or different diameters, has a pitch and a diameter such that, when in joint rotation, the spires of one of the blade elements remains in close contact with the spires of the other blade element or elements. Each of the helical blade elements is operatively connected mechanically for simultaneous rotation with the other blade element or elements. The operative connection between the blade the blade elements is, for example, achieved by endless chains trained about pinion fixed on respective ends of rotating shafts to which the helical elements are fixed.

Abstract: A multi-row seed planter has a seed hopper for each row and may also have a herbicide and/or insecticide hopper for each row. The hoppers have generally rectangular top openings the rims of which are tubular in cross-section and referred to as "perimeter tubes". The closure lids for the hoppers slide on and off from the hopper openings. When each lid reaches its fully closed position it snaps into place and cooperating formations on the lid and perimeter tube retain it in its fully closed position against agitation and vibration during planter travel.

Abstract: A sighting device for use in conjunction with an archery bow to facilitate the accurate sighting in of a target, the sighting device mounts laterally or to the bow, by means of an adjustable support arm, the support arm fixes a first mount, that secures a slide, to provide either lateral or vertical adjustment to the sight, an indexing means to provide for fine setting to the slide within its mount, and second mount secures to the first slide, and has a second slide provided therein, for holding of the sight pins, to provide for the other of the vertical or lateral adjustment to the pins when achieving accuracy in the setting of the sight in preparation for usage and application of the archery bow.

Abstract: An air cushion mount system is provided between a backhoe system and a vibrator-compactor system for tampering material in a trench which is being filled. This air cushion mount consists of a tire having a wheel rim positioned on the inside rim of a steel pipe having an annular peripheral flange. A flange plate is coupled to the annular peripheral flange of the steel pipe so that the tire can be placed in operative condition or removed from operative condition. The elements of the backhoe are coupled to flanges fixed to the wheel hub. The cushion air mount is coupled by a plate member to the vibrator, and the latter in turn is affixed to a compactor for tampering material in a trench being filled with the same.

Abstract: A bow string release includes elongate, cylindrical sears adapted for linear, axial movement into and out of a string retaining notch, the sears having ends which for a string centering retainer when in the closed, string retaining position. The latch system is designed to engage the sears below their center lines to minimize trigger travel. A trigger with a cam actuator is provided to further minimize trigger travel.

Abstract: A powered spinning tiller with a box beam extending transversely of the direction of travel includes a plurality of spinners each consisting of a prong holder and a drive gear disposed rotatably on bearings side by side, adjacent prong holders being driven to rotate in opposite directions by the gear drive. In order to create an economical method of constructing a spinning tiller by the simplest means, provision is made for each spinner to be journaled on only one bearing and/or bearing ring which is situated in a single plane.

Abstract: An apparatus adapted to permit independent setting of pitch and tilt of dozer blades without necessitating complex hydraulic circuitry or mechanical linkage. The blade is pivotally supported by two forwardly extending push beams. A strut is connected at one end to one of the push beams and is connected at its other end to the dozer blade via a cam assembly. The cam assembly permits dozer blade pitching to take place without interacting with the dozer blade tilt angle. In a preferred embodiment, two struts are used at opposite ends of the blade and are each connected to their respective side of the blade by a respective cam. The two cams are linked together and synchronized so that their stroke equally pitches the sides of the dozer blade.

Abstract: The present invention relates to apparatus for sowing seed, particularly seed for reforestation, intermittently or continuously in a precise and controlled manner. The inventive apparatus includes at least one seed-magazine and at least one seed-dispensing aperture. In order to utilize the germination potential of the seed in to the cultivated soil in which the seed is sown, it is proposed in accordance with the invention that the apparatus will include at least one seed-carrier provided with means for receiving discrete seeds from the seed-magazine. The apparatus includes force-transmission means by means of which the seed-carrier is moved between a seed-receiving position and at least one seed-dispensing position, in which the seed-carrier communicated with the seed-dispensing aperture and in which seed carried by the seed-carrier is caused to fall down through the seed-dispensing aperture.

Abstract: A bow string release characterized by its ability to easily release the bow string and arrow smoothly and without deviation to improve accuracy. A body universally swivelly affixed to a wrist strap includes pivoted string retainers controlled by a pair of retainer operators through a toggle lever mechanism. The operators include handle portions extending from the lateral sides of the body wherein the release may be operated by a pinch or squeeze movement of the fingers, pivoted levers having pivots approaching an "on center" relationship permit high string pressure to be easily released and a safety mechanism prevents premature string release during the draw.

Abstract: An improved down pressure arrangement for an implement such as a multi-section grain drill having fixed-height section frames with corresponding gangs of opener assemblies. The opener assemblies of each gang are yieldingly biased downwardly by a spring and bracket structure operably connected to a rockshaft. One rockshaft per gang is provided, and each rockshaft is controlled by a single down pressure adjusting cylinder. The cylinders are connected in parallel and to a pressure regulator to provide adjustable and uniform average opener down pressure across the width of the drill for more contant opener depth in irregular ground conditions. Tension links connected to the bracket structure permit the opener assemblies to be raised from a ground-working position to a transport position.

Abstract: A clamp for forming a seal on a pipeline section, the clamp comprising a pair of complementary clamp members to be clamped together, each clamp member having an inner surface with a pair of axially spaced, circumferentially extending circumferential seals, and one clamp member having a pair of circumferentially spaced longitudinal seals which extend axially to bridge the gaps between the opposed circumferential ends of the pair of circumferential seals to define four junction zones where the circumferential seals and the longitudinal seals abut, and retention means at each junction zone to connect the circumferential and longitudinal seals together in the retention zones, and at the same time connect the seals to the clamp member at the junction zones. The clamp includes corner seals to provide backup sealing from the junction zones. The clamp includes heat protection grooves to protect certain of the clamp seals. The clamp may include a pipe branch to provide a hot tapping facility.

Abstract: An arrow rest assembly includes a mounting bracket for mounting to a bow. A rest arm is mounted on a spatially fixed lateral shaft that aids in supporting and positioning the rest arm. The rest arm is adapted to be laterally adjusted along the shaft. The assembly further includes an angular adjustment screw that cooperates with the rest arm to angularly position the arrow supported by the rest arm for proper flight trajectory upon firing. In one embodiment, the lateral shaft is threaded to mate with a threaded hole in the rest arm. A lateral adjustment knob is rotated to rotate the shaft and thus move the rest arm laterally along the shaft due to the cooperating threaded engagement. The angular adjustment screw is atached directly to the rest arm and engages a bottom plate of the assembly. In another embodiment, the lateral shaft has a V-shaped slot for receiving a securing screw attached to the rest arm.

Abstract: A pneumatic gun incorporating a striker (50) moving in response to the urging of a compressed power spring (77) from a cocked position in a striker chamber (46) to impact on a primary valve assembly (80) and thereby effect the release of compressed gas for propelling a projectile from the gun and for recocking the striker (50) is disclosed. The primary valve assembly (80) incorporates a single full-pressure main valve (87) for regulating the release of all compressed gas, and a unidirectional low pressure secondary valve (88) for providing a portion of the compressed gas released by the main valve to the striker chamber (46) for urging the striker (50) to move back to the cooked position.

Abstract: A rotary soil working tool comprising a rotatable support member having an engaging portion and a plurality of soil working elements each comprising an elongated member with a waisted portion. Each soil working element is detachably secured to the engaging portion such that the element extends outwardly of the support member. Preferably the support member is adapted to be rotabably supported on a hub.