Abstract: An implement for working of the ground or soil and applying seed, fertilizer or other materials into the ground which comprises a blade assembly mountable to an upright tool shank such as to allow at least limited pivotal movement of the blade assembly about a generally vertical axis, the blade assembly comprising blades which extend transversely relative to the shank and which are preferably in a V-shaped configuration, and one or more feed tubes which extend longitudinally of the blade or blades on the rear side thereof for supplying seed, fertilizer or other materials into the ground during the ground or soil working process.

Abstract: An implement for working of the ground or soil and applying seed, fertilizer or other materials into the ground which comprises a blade assembly mountable to an upright tool shank such as to allow at least limited pivotal movement of the blade assembly about a generally vertical axis, the blade assembly comprising blades which extend transversely relative to the shank and which are preferably in a V-shaped configuration, and one or more feed tubes which extend longitudinally of the blade or blades on the rear side thereof for supplying seed, fertilizer or other materials into the ground during the ground or soil working process.

Abstract: A tool mounting assembly for mounting an earth working tool to a shank or tyne, the shank or tyne having opposite side surfaces and the tool mounting assembly including a tool holder having an opening for slidably receiving the shank or tyne and the holder having means for cooperating with one or both side surfaces of the shank to prevent or minimize lateral twisting movement of the holder relative to said shank or tyne. Such means may comprise a surface which defines with a side surface of the shank a tapering space for receiving soil, dirt or other particulate material which in use becomes wedged between the holder and the side surface or surfaces of the shank or tyne. In another arrangement, a resilient wire, rod or other wedging member is received within the tapering space. In yet a further arrangement, the holder includes at least one clamping screw which can be advanced into engagement with the adjacent side surface of the shank to clamp the holder laterally to the shank.

Abstract: A digging point assembly for use in earthworking which comprises a main body which includes a socket member defining a hollow socket for engagement with a leading tip of a tyne and first and second replaceable wear parts which are mounted to the main body to protect the leading end and top of the socket member which are normally exposed to wear in movement through soil, the first wear part being maintained in an operative position at the leading end of the socket by the tyne and cooperating with the second wear part to maintain the second wear part in operative position protecting the top of the socket member. The digging point assembly may also include a third replaceable wear part at the leading end of the body part which is held in position by cooperation with the first replaceable wear part.

Abstract: A digging point assembly for use in earthworking which comprises a main body which includes a socket member defining a hollow socket for engagement with a leading tip of a tyne and first and second replaceable wear parts which are mounted to the main body to protect the leading end and top of the socket member which are normally exposed to wear in movement through soil, the first wear part being maintained in an operative position at the leading end of the socket by the tyne and cooperating with the second wear part to maintain the second wear part in operative position protecting the top of the socket member. The digging point assembly may also include a third replaceable wear part at the leading end of the body part which is held in position by cooperation with the first replaceable wear part.

Abstract: Radiant energy collecting apparatus (11) which includes a platform assembly (13) floating on a body of liquid, the top side of which supports reflectors (16) of a solar concentrator and the underside of which is provided with a series of compartments (31) which are open on their lowermost sides and which contain air to provide buoyant lift to maintain the reflectors (16) above the level of liquid. Air may be supplied to the compartments (31) through an air duct (33) beneath the platform assembly (13), the duct (33) having a number of openings (35) through which the air passes.

Abstract: A soil penetrating tool assembly (10) having a tool shank (18) which is pivotally mounted so as to clear obstructions in the ground. Movement of the shank away from its normal attitude is opposed by a hydraulic ram (22). The force required to be exerted by the shank (18) against the opposing force of the ram (22) is initially high but is reduced upon a predetermined movement of the tool (18) and thus a predetermined retraction of the ram (22). This allows the tool (18) to more easily clear large obstructions without causing damage to the tool (18).

Abstract: A radiant energy collecting apparatus for collecting and concentrating solar energy having a primary parabolic reflector which focuses the sun's rays on a focal line and has a principal axis passing through the focal line and a secondary concentrating assembly located adjacent the focal line of the primary reflector. The secondary concentrating assembly, includes a pair of planar reflectors arranged on opposite sides of the principle axis of the primary reflector and a series of secondary parabolic reflectors between the planar reflectors, the secondary parabolic reflectors having focal lines which extend normal to the planar reflectors and to the principal axis of the primary reflector. The secondary reflectors are mounted for rotation about their focal lines and concentrate energy on targets extending along their focal lines.

Abstract: A radiant energy collecting apparatus including a fluid reservoir, a platform floating on said fluid reservoir, a drive structure for moving the platform on the reservoir, radiant energy collectors supported on the platform, reflectors for concentrating radiant energy on the radiant energy collectors, and means for selectively submerging the concentrating means beneath fluid from the reservoir for protection against inclement weather conditions. Fluid feed impellers are supported beneath the platform within the reservoir and communicate with ports through the platform for pumping fluid onto the platform and reflectors. Opposing fluid impellers are associated with each fluid feed impeller, the opposing impellers being operable with the feed impellers to force fluid in an opposing direction to the feed impellers, with deflectors being disposed between the feed impellers and the opposing impellers.

Abstract: A soil penetrating tool assembly for mounting to a tool bar of a soil penetrating implement including a shank member which has an elongate body, a soil penetrating tool which is located on the first end of the body and a facing plate located on a second end of the body. The facing plate engages one side of the tool bar, and has a first end and a second end which has an opening. A clamping plate engages the other side of the tool bar, and has a first end and a forked second end which has two prongs each having openings including two sections, generally oblong in cross-section, offset from one another with different centerlines. The facing plate first end and clamping plate first end include facing flanges each having a through hole and a bolt secures the flanges together with a clearance therebetween.

Abstract: An assembly for mounting an earth working tool to a shank having a substantially vertical track on the rear end of the shank, a tool holder having a C-shaped opening at its forward end and adapted to fit over the shank track, and a wedge member adapted for wedging between the shank track and the tool holder to secure the holder to the shank at a selected position with the track forward facing surfaces engaging the flange rear surfaces. The track includes a rearward V-shaped surface and a pair of forward facing surfaces and the holder opening includes a flanges adapted to engage the forward facing surfaces when forced together by the wedge member. Depressions and protrusions are provided on the flanges and forward facing surfaces to secure against vertical movement of the mounted holder relative to the shank. The V-shaped surface has an included angle of substantially ninety degrees.

Abstract: An improved digging point assembly comprises a holder, a blade member and a digging tip member connected in series. The blade member is constructed such that, when partially worn, it can be used as a tip member on a fresh blade member. The tip can be allowed to wera out completely and the blade can also be allowed to wear until damage to the holder is imminent. The worn blade member is then used as a tip on a fresh blade member, and the cycle repeated.