With Add-on Cutting Or Wearing Element Applied Directly Over, Or Onto, The Original Cutting Element Patents (Class 172/719)
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Patent number: 4013130Abstract: A ripper of an earthworking apparatus includes a shank with a tapered, forwardly projecting lower end portion that has a blunt extremity, a detachable hollow shin protector which embraces the lower end portion of the shank, both to reinforce said lower end portion and to transfer some ripping forces to the upper portion of the shank which is stronger than the tapered lower end portion, and a one-piece detachable ripper tip which has a rearward mounting stub provided with spaced control surfaces that abut mating control surfaces on the shank and/or the shin protector to positively position the ripper tip and to transfer certain ripping forces through the shin protector to the upper portion of the shank.Type: GrantFiled: November 4, 1974Date of Patent: March 22, 1977Assignee: Caterpillar Tractor Co.Inventors: Leon A. Wirt, Kenneth A. Rhoads
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Patent number: 4009529Abstract: A grading blade for attachment to a toothed shovel, such as a backhoe bucket, without modificiation of the bucket. The blade includes a pair of upstanding side portions adapted to direct spillover inwardly, toward the bucket. The blade is tapered at its sides to permit it to be used closely adjacent the foundation of a building.Type: GrantFiled: September 25, 1975Date of Patent: March 1, 1977Inventor: Lawrence M. Johnson
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Patent number: 4006544Abstract: Two embodiments of a replaceable cutting edge assembly for earthmoving buckets, each assembly including a plurality of cutting edge sections arranged along a leading edge of the earthmoving bucket floor with digging teeth overlapping the junctures between the cutting edge sections, the cutting edge sections being configured for attachment to the bucket floor, for example, by means of bolts, while trapping and holding the digging teeth in place in order to facilitate replacement of individual portions of the assembly while also adapting the bucket for use with a single elongated cutting edge without the digging teeth. In one embodiment, the cutting edge sections and teeth are designed to provide a flush bottom surface suitable for finish work even with the teeth in place. In the second embodiment, additional means are employed to secure both the digging teeth and cutting edge sections in place along the leading edge of the bucket floor.Type: GrantFiled: May 12, 1975Date of Patent: February 8, 1977Assignee: Caterpillar Tractor Co.Inventor: Visvaldis A. Stepe
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Patent number: 3999614Abstract: An earth ripping apparatus is provided with a replaceable ripper tip which is releasably attached to the lower end of a shank latching means which functions in cooperative association with a wear plate carried along the leading edge of the shank.Type: GrantFiled: December 11, 1970Date of Patent: December 28, 1976Assignee: Caterpillar Tractor Co.Inventor: Kenneth A. Rhoads
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Patent number: 3995698Abstract: Relates to a protective guard or shield for covering the wear area of the moldboard of a plow. The shin member of the plow assembly is provided with an integrally connected rearward extension which overlies the most serious wear area of the moldboard. The shin extension is not bolted or otherwise fastened to the moldboard but relies on a shoulder formed on the back side of the shin for engagement with the leading edge of the moldboard and the provision of a plurality of spaced apart projections on the face of the extension confronting the moldboard for bearing support thereon. The shin and its extension may be used to cover the worn area of a used moldboard or to protect such area of a new moldboard. In the latter case the projections may be ground down to provide surface contact between the shin extension and the moldboard. The shin and its extension are preferably formed of a stainless steel alloy and cast in one piece.Type: GrantFiled: July 11, 1975Date of Patent: December 7, 1976Inventors: Tom Holland Nelson, Bruce Cooper Nelson
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Patent number: 3995384Abstract: A replaceable edge bit structure for a blade- or bucket type earthworking implement includes a bit having a pair of underbeveled catch regions in one of its faces. One of the regions has a configuration complementing that of the working edge of the implement's moldboard; the other region has a configuration complementing portions of mounting parts for the bit which are secured to the moldboard. The bit is removably held in conjoint engagement with the moldboard and mounting parts by a single pin disposed in front of and parallel to the moldboard, engaging the bit and mounting parts.Type: GrantFiled: November 25, 1974Date of Patent: December 7, 1976Assignee: John F. DuncanInventor: Jay J. Wood
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Patent number: 3995699Abstract: A replaceable tool for attachment to the periphery of an agricultural disc is formed of an inverted U-shaped investment casting which can be fitted over the marginal edge portion of the disc to present parallel leading and trailing faces connecting side surfaces which converge outwardly of the disc, being inclined at different angles relative to the plane of the disc so as to present on one side of said disc a side surface providing clearance for the disc on that side of the disc and the other side surface being at a greater angle which reduces the areas of the end faces of the tool to reduce resistance to passage of the tool through the ground.Type: GrantFiled: December 11, 1975Date of Patent: December 7, 1976Assignee: Wallace-Murray CorporationInventors: Joseph T. Blucher, Ernest A. Evancic
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Patent number: 3994084Abstract: In earthmoving equipment, such as a scraper, an adjustable feedthrough protective bit is mounted on each side wall of the bowl in position to protect the leading edges of the bowl in the vicinity of a cutter blade extending between said side walls. Guide straps or abutments are provided on the walls to hold each bit in fixed position on the bowl and a novel arrangement of apertures and openings are provided in each bit and in the wall of the bowl to facilitate effectively securing the bit to the bowl. The bit configurations may be such as to permit end-for-end reversal of orientation of the bit and to provide for use of the bit on either side of the equipment.Type: GrantFiled: April 9, 1975Date of Patent: November 30, 1976Assignee: Caterpillar Tractor Co.Inventors: Roger M. Smith, Eugene M. Wilson
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Patent number: 3984929Abstract: A loader bucket comprises a bottom wall having an elongated general purpose edge disposed forwardly thereon. A cutting edge is bolted onto an underside of the general purpose edge along with a plurality of laterally spaced adapters. A plurality of U-shaped notches are formed on a forward edge of the cutting edge and each notch receives a like-shaped lower portion of an adapter therein. Each adapter has a hardened earthworking tip detachably mounted thereon by a pin. In a first embodiment of this invention, the cutting edge is reversible and has a plurality of such notches formed on both the forward and rearward edges thereof whereas in a second embodiment of this invention such notches are solely formed on the forward edge of the cutting edge.Type: GrantFiled: October 8, 1975Date of Patent: October 12, 1976Assignee: Caterpillar Tractor Co.Inventors: David L. Meyer, Visvaldis A. Stepe
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Patent number: 3984910Abstract: A multi-material earthworking ripper tip having a leading nose portion comprised of a material having greater wear resistance and strength at elevated temperatures than the material which comprises the rearward shank supporting portion of the tip. In one embodiment, a bi-metallic nose portion is inertial welded to the shank support portion of the tip. In another embodiment powdered tungsten carbide is sintered in situ within a hollow bore of a steel nose portion. Alternately, a solid core of tungsten carbide could be soldered, brazed or press fitted within said hollow bore.Type: GrantFiled: September 8, 1975Date of Patent: October 12, 1976Assignee: Caterpillar Tractor Co.Inventors: Eugene L. Helton, Walter B. Miller
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Patent number: 3981367Abstract: A self-restoring spring trip cultivator shank assembly adapted to be supported from a mounting bracket secured to the transverse tool bar of a ground-working agricultural implement. The lower end of the cultivator shank carries a ground-working tool and the forward end extends between a pair of laterally spaced side plates which are supported by the mounting bracket contiguous the under surface of the tool bar, the forward end of the cultivator shank being adapted to pivot about the peripheral surface of a pivot pin which extends between and through the laterally spaced side plates. An abutment member in the form of leaf spring which extends in overlying contacting engagement to the upper surface of the cultivator shank is suitably held against the forward end portion of the cultivator shank to maintain the cultivator shank in pivotal bearing relation against the peripheral surface of the pivot pin.Type: GrantFiled: September 29, 1975Date of Patent: September 21, 1976Assignee: Allis-Chalmers CorporationInventor: John W. Mydels
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Patent number: 3971323Abstract: A tamping blade is comprised of a blade shoe of steel that is adapted for mounting on the end of a support arm and has a cut-out at the leading edges to support at least one wear-resistant insert. Preferably a plurality of wear-resistant inserts, typically of tungsten carbide, are positioned end to end in the cut-out. Each insert has first and second opposed sides and first and second opposed major surfaces, with the major surfaces being angular to each other to provide a substantially uniform thickness for the body at each of the sides. The first side of each insert has a thickness of at least about 3/8 inch and is adapted to provide a leading edge for the tamping blade extending across the thickness of the blade shoe beyond the leading edge thereof.Type: GrantFiled: February 19, 1975Date of Patent: July 27, 1976Assignee: Teledyne Mid-America CorporationInventor: Richard W. Beiswenger
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Patent number: 3967398Abstract: A work implement, such as a loader bucket, comprises a pair of laterally spaced end walls and a cutting edge secured forwardly on the bucket, between such end walls. A corner protector is detachably mounted on a forward edge of each of the sidewalls by a plurality of bolts. An interlocking tongue and groove arrangement mounts the corner protector on the sidewall. The corner protector may have a tip mounting adapter formed integrally thereon or may constitute a router bit.Type: GrantFiled: September 25, 1975Date of Patent: July 6, 1976Assignee: Caterpillar Tractor Co.Inventor: Visvaldis A. Stepe
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Patent number: 3961788Abstract: A bulldozer blade comprises an upright member having a pair of laterally spaced end plates and a transversely disposed cutting edge secured thereon. A mounting plate is secured forwardly on the outboard side of each of the end plates and an adapter is secured forwardly on each of the mounting plates. An end bit and an earthworking tip are detachably mounted on each of the adapters.Type: GrantFiled: February 7, 1975Date of Patent: June 8, 1976Assignee: Caterpillar Tractor Co.Inventors: Eugene L. Helton, Nathan Gutman, Donald E. Ribbing
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Patent number: 3942271Abstract: A housing having a V-shaped cross-section is adapted to be positioned over the teeth of a backhoe bucket. An earth moving blade is secured to the lowermost portion of the housing. Lugs are secured to the inside surfaces of adjoining teeth of the backhoe bucket. A retaining bar is inserted through apertures formed in the front and back faces of the housing to engage the lugs between the teeth and thereby retain the receptacle on the tooth portion of the backhoe to permit earth moving and grading operations.Type: GrantFiled: July 8, 1974Date of Patent: March 9, 1976Inventor: Anthony Joseph George
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Patent number: 3934654Abstract: An earthworking blade arrangement, such as for a grader or snow plow blade or the like, in which a steel blade is mounted on the lower edge of a moldboard and extends downwardly therefrom while an axially segmented blade is secured to the lower edge of the steel blade and extends downwardly therefrom and is provided with hard wear resistant inserts mounted in the lower edge thereof and which forms the working edge of the blade assembly. Advantageously, the axially segmented member extends a substantial distance upwardly along the back of the steel blade and is bolted thereto.Type: GrantFiled: September 6, 1974Date of Patent: January 27, 1976Assignee: Kennametal Inc.Inventors: Earle W. Stephenson, Leonard E. Toews