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"That the automobile has practically reached the limit of its development is suggested by the fact that during the past year no improvements of a radical nature have been introduced."
Scientific American ; Jan. 2 edition, 1909
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| Number | Title | Issue Date |
| 6945332 | Aeration tine device A highly durable aeration tine device attached to a soil aerator has a tubular tine member extending cylindrically and a hard metal tip made of a hard metal material and typically made in a frustum shape of a cone, which is in an area contact with the tubular tine m... | 09/20/2005 |
| 6799385 | Abrasion resistant earth working surface and weld stud An abrasion resistant metal earth working surface having a plurality of spaced hollow open ended cup-shaped abrasion resistant studs welded to the surface which collect particulate material in the hollow open ends of the weld studs, wherein the particulate material ... | 10/05/2004 |
| 5881821 | Fin sweep assembly and method of manufacture A tillage sweep assembly includes a base sweep with a central fore-and-aft slot. A support strap or stem includes a corresponding fore-and-aft extending protrusion which mates with the slot. A filet weld connects the top of the base sweep to the support s... | 03/16/1999 |
| 5119888 | Replaceable edge for trenching plow blade A trenching plow blade having replaceable wear components is disclosed. A preferably octagonal rod with regularly spaced transverse holes drilled therethrough is welded to the leading edge of the blade. Replaceable leading edge cover pieces each have a ch... | 06/09/1992 |
| 5001995 | Sweep tillage tool Sweep tillage tools (10, 10') according to the preferred teachings of the present invention are disclosed including generally flat, horizontal sweep blades (18) generally located behind the implement shank (12) and above the point (28) of the spike (16, 1... | 03/26/1991 |
| 4941711 | Cemented carbide tip A cemented carbide tip for a cutter bit is rotationally symmetric about its longitudinal axis and has a socket in its rear end for brazing to a steel protrusion on a steel tool shank. The tip socket and an outer rearmost facing surface on the tip rear end... | 07/17/1990 |
| 4911504 | Cutter bit and tip A cemented carbide tip is provided with a socket for mounting onto the steel shank of a cutter bit. The socket has an annular convex surface therein extending from the earth engaging portion of the tip radially inwardly and forwardly. This convex surface ... | 03/27/1990 |
| 4893875 | Ground engaging bit having a hardened tip Ground engaging bits having hardned tips are beneficial when working extremely hard ground and/or planing asphalt or concreate. In these applications, the ground engaging bits rotate in their holders while performing the cutting action. Since the material... | 01/16/1990 |
| 4825782 | Sweep-spike combination tillage tool A sweep-spike combination tillage tool (10) according to the preferred teachings of the present invention is disclosed including generally flat, horizontal sweep blades (18) located behind a spike (16) and above the point (28) of the spike (16). Specifica... | 05/02/1989 |
| 4807461 | Motor grader main frame A main frame construction for a motor grader wherein the main frame comprises a rear unit, a center unit, and a front unit. Both rear and center units are box-like structures in cross sections with constant transverse dimensions, with constant metal speci... | 02/28/1989 |
| 4781254 | Two-piece earth engaging implement and method of forming the same An agricultural earth engaging implement formed from two metal plate sections. One piece forms a narrow profile shaft and the other forms the earth engaging portion. The shaft is formed to provide a tapered cavity for receiving a tine and the implement is... | 11/01/1988 |
| 4645013 | Agricultural sweep An agricultural sweep which includes a pair of divergent wings having sharpened, earth-cutting edges. The wings define an angle of between 60° and 100°, and a hard metal insert is used to provide an overlying cap at the forward end of the two wings wher... | 02/24/1987 |
| 4625437 | Shroud for a digging bucket lip A digging bucket lip is provided with one or more shrouds, each shroud having a blunt forward portion and a rearward portion divided into two spaced-apart legs. There are apertures through the legs, preferably in alignment. Rings are slidably disposed in ... | 12/02/1986 |
| 4606275 | Tamping tools Tamping tools for mounting in a ballast tamping apparatus such as the rail-mounted Canron, Plasser and Jackson ballast tamping machines designed for tamping ballast around railroad cross ties, which tamping tools each include a shaft adapted for mounting ... | 08/19/1986 |
| 4589498 | Plow share overcap A tillage tool appendage which includes a base plate or shank portion, adapted to be connected to the frame of the tillage tool, and a plow point bar-overcap welded to the base plate or shank portion. The plow point bar-overcap includes a leading edge lip... | 05/20/1986 |
| 4529042 | Tillage tool appendage A tillage tool appendage which includes a base plate or shank portion, adapted to be connected to the frame of the tillage tool, and a plow point bar-overcap welded to the base plate or shank portion. The plow point bar-overcap includes a leading edge lip... | 07/16/1985 |
| 4482020 | Agricultural share formed in two mirror image parts An agricultural share formed in two parts wherein the parts are mirror images of one another and each part comprises a major face having a point, the face being defined by a first, inner edge extending rearwardly from the point and a second, outer edge ex... | 11/13/1984 |
| 4408667 | Agricultural shares The present invention relates to an agricultural share formed of metal and having a front and rear and two sides converging together to form a point, wherein there is bonded to the front of the share along at least part of each of its sides a lateral prot... | 10/11/1983 |
| 4363364 | Plow chisel with pointed shank having pointed chisel cap secured thereto by weld A plow chisel having an integrated chisel point and including an elongated, arcuate shank portion formed as a curved, flat metal plate having a top surface, bottom surface and two opposed side edges. At one end, the shank portion is pointed due to converg... | 12/14/1982 |
| 4074449 | Method of making a loader bucket cutting edge with recessed bolt studs A loader bucket comprises a bottom wall having an elongated general purpose edge disposed forwardly thereon. A reversible cutting edge is bolted onto an underside of the general purpose edge, along with a plurality of laterally spaced adapters each having... | 02/21/1978 |
| 4074767 | Motor grader support structure and side shift mechanism An improved support for mounting the grader blade assembly of a motor grader on depending support arms of the motor grader circle. A bearing housing structure which is several times wider than the height of the blade assembly consists of a transverse holl... | 02/21/1978 |
| 4059161 | Tillage apparatus and improved blade therefor A tillage apparatus for sod seeding usage includes a plurality of tillage unit assemblies having power driven blades receiving power from a tractor which tows the apparatus. An improved tillage blade is disclosed.... | 11/22/1977 |
| 3951559 | Weldment for bulldozer blades A bulldozer blade comprises a push plate having a cutting edge mounted on a lower end thereof and a plurality of structural members secured on the back of the push plate and welded together to increase the structural integrity thereof. Each adjacent pair ... | 04/20/1976 |
