Abstract: An improved bolt and bolt carrier with integral gas key having an extension nozzle threadedly secured and pinned to the gas key for use with a direct gas operated firearm is provided. The extension nozzle is designed to receive a portion of the host firearm's gas operating system. The firing pin retaining pin is oriented so as to expose its widest profile to the firing pin's annular flange, increasing its service life. The bolt has a plurality of lugs extending from its forward end. The extractor recess is constructed so that the face of the bolt is round and the adjacent lugs fully supported. The extractor engages approximately 17% more of a seated ammunition cartridge's rim as compared to the prior art AR15/M16 extractor. The result is an improved bolt and bolt carrier which provides for increased operational reliability.

Abstract: An improved bolt and bolt carrier with integral gas key having an extension nozzle threadedly secured and pinned to the gas key for use with a direct gas operated firearm is provided. The extension nozzle is designed to receive a portion of the host firearms gas operating system. The firing pin retaining pin is oriented so as to expose its widest profile to the firing pins annular flange, increasing its service life. The bolt has a plurality of lugs extending from its forward end and an extractor recess. The extractor recess is constructed to accommodate an enlarged extractor claw while not undercutting the bolt lugs adjacent thereto. The extractor engages approximately 57% more of a seated ammunition cartridges rim as compared to some prior art AR15/M16 type extractors used with automatic firearms chambered in 6.8SPC. The result is an improved bolt and bolt carrier which provides for increased operational reliability.

Abstract: A sowing coulter for direct and/or mulch sowing includes a coulter body, a tear-open chisel fastened by a fastening device, and coulter blades laterally projecting from the tear-open chisel and provided with front cutting edges, which are arranged in order to create a sowing furrow in the ground. In order to change the penetration depth of the sowing coulter into the ground, the coulter blades are adjustable about a horizontal axis that extends transversely to the direction of travel, and that is fixable in different positions by way of an adjustment device arranged between the tear-open chisel and the coulter body.

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: Conventionally, a cultivator and a packer are required as well as a tine harrow in most grain farming operations. The present device consists of a small sweep of approximately two inches width that can be detachably secured to the tines of a tine harrow and adjusted vertically to cultivate the surface of the soil or at any depth up to the maximum depth penetrated by the harrow tines. Alternatively, the sweeps can be reversed on the tines and used as packers. The device may be used for relatively light weeding operations, to facilitate the proper incorporation of herbicides and to provide a level and prepared seed bed.

Abstract: An undercutting knife for a sod cutting machine consisting of a blade and a blade holder of essentially equal length. The blade is enclosed by the holder except for the projecting forward edge. The blade is light in weight, may have two cutting edges, and is intended to be discarded after use rather than sharpened. The blade maybe frictionally retained within the holder.

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.

Abstract: The ditching apparatus includes a prime mover (A) and an arm assembly (B) for selectively positioning a ditching head (C). The ditching head includes a rotatably mounted circular supporting member (34) to which a plurality of mounting brackets (44) are mounted transversely and radially about an axis of rotation (36). A plurality of blades (50) are mounted to the brackets by a plurality of bolts (84). Each blade has first and second faces (66, 68) which are disposed symmetrically about a face axis (78). The faces terminate at first and second edges (52, 54) which are disposed symmetrically about an edge axis (56) and at first and second ends (60, 62) which are symmetric about an end axis (64). The blade includes a plurality of mounting apertures (80, 82) which are symmetrical with respect to both the end and edge axes. In this manner, the blade is reversible about both the end and edge axes to be mounted selectively in any one of four positions.

Abstract: A plow moldboard made of a plurality of sections which are reversible and interchangeable so that each moldboard section can alternatively serve as the leading edge of the moldboard in two different positions. Each section has substantially parallel top and bottom edges and substantially parallel side edges. Each section has a uniform curvature and also has two apertures for receiving a bolt therethrough and for fastening upon the plow frame.

Abstract: The ditching apparatus includes a prime mover (A) and an arm assembly (B) for selectively positioning a ditching head (C). The ditching head includes a rotatably mounted circular supporting member (34) to which a plurality of mounting brackets (44) are mounted transversely and radially about an axis of rotation (36). A plurality of blades (50) are mounted to the brackets by a plurality of bolts (84). Each blade has first and second faces (66, 68) which are disposed symmetrically about a face axis (78). The faces terminate at first and second edges (52, 54) which are disposed symmetrically about an edge axis (56) and at first and second ends (60, 62) which are symmetric about an end axis (64). The blade includes a plurality of mounting apertures (80, 82) which are symmetrical with respect to both the end and edge axes. In this manner, the blade is reversible about both the end and edge axis to be mounted selectively in any one of four positions.

Abstract: A corner tooth is useful, for example, on construction equipment buckets to protect the sidewalls from abrasive wear which normally results from continued contact with the ground. In order to protect the sidewall, others use elements secured directly to the sidewall or various forms of specialized teeth mounted on the corner. Many of these specialized teeth inhibit the tooth's ability to penetrate the ground. The present corner tooth provides the protection for the sidewall while still maintaining good strength and penetration. This is due to a single flat member being oriented vertically with respect to the normal working position of the tooth and a single reinforcement rib extending perpendicular to the flat member. Furthermore, since the tooth is symmetrical about the second plane and the rib is located along the second plane the tooth can be used on either corner. This eliminates the need to manufacture and stock an extra part of a different design.

Abstract: A bucket for use in conjunction with earth working and material handling implements having a plurality of tooth members associated therewith. The bucket includes a cutting-edge plate secured to the leading edge of a backwall plate. The cutting-edge plate has a plurality of downwardly extending transversely spaced tongue portions associated with a forward end thereof. The tooth members have transverse grooves formed in the upper surfaces thereof for receipt of the tongue portions. Each tooth member has a pair of oppositely disposed beveled portions to permit reversal thereof on the cutting-edge plate.

Abstract: A plough having a share with an accompanying tip that is removably secured on the bottom front portion of the share. The tip is so constructed and arranged that it is adjustable on the plough share so that the extent of life of use of the tip can be significantly increased. Thus, the maximum use of a plough share tip may be effectuated.

Abstract: An earth-working tool has mounting means at one end for attachment of the tool to the frame of an agricultural implement, a tool blade down the forward edge of the tool and attachment means at the other end of the tool for securing a tool point. The mounting means is so arranged that the tool may be attached to the frame in such a manner that the tool blade will form a rearward angle, from the top end to the other end, in relation to a line normal to the direction of forward movement which the tool will take during use, with the result that soil tilled by the tool point will be prevented from rising to the surface by the action of the rearwardly directed tool blade. Ideally the tool may be mounted so that the tool blade will be forwardly directed, either by reversing the tool or by providing alternative mounting holes for mounting the tool to an agricultural implement.

Abstract: A reversible bit for selective mounting to an earth-moving blade, such as a bulldozer blade, having opposite corner portions. The bit includes transversely extending cutting edge portions and a mounting portion adapted to be selectively mounted to opposite corners of the blade with one or the other of the cutting edge portions suitably disposed in cutting position whereby the bit provides substantially twice the normal life of the conventional blade bit.

Abstract: A sod cutting knife having a horizontal undercutting blade, vertical support arms connected to each side of the undercutting blade, and removable side cutting blades mounted at the front of each support arm. The side cutting blades project below the bottom of the undercutting blade to protect the connection between the undercutting blade and the support arms against wear. The vertical and horizontal extent of the protrusions of the side cutting blades below the undercutting blade is limited to avoid undue resistance to vertical movement of the knife into the ground.