With Add-on Cutting Or Wearing Element Applied Directly Over, Or Onto, The Original Cutting Element Patents (Class 172/719)
  • Patent number: 4013130
    Abstract: 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: Grant
    Filed: November 4, 1974
    Date of Patent: March 22, 1977
    Assignee: Caterpillar Tractor Co.
    Inventors: Leon A. Wirt, Kenneth A. Rhoads
  • Patent number: 4009529
    Abstract: 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: Grant
    Filed: September 25, 1975
    Date of Patent: March 1, 1977
    Inventor: Lawrence M. Johnson
  • Patent number: 4006544
    Abstract: 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: Grant
    Filed: May 12, 1975
    Date of Patent: February 8, 1977
    Assignee: Caterpillar Tractor Co.
    Inventor: Visvaldis A. Stepe
  • Patent number: 3999614
    Abstract: 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: Grant
    Filed: December 11, 1970
    Date of Patent: December 28, 1976
    Assignee: Caterpillar Tractor Co.
    Inventor: Kenneth A. Rhoads
  • Patent number: 3995698
    Abstract: 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: Grant
    Filed: July 11, 1975
    Date of Patent: December 7, 1976
    Inventors: Tom Holland Nelson, Bruce Cooper Nelson
  • Patent number: 3995384
    Abstract: 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: Grant
    Filed: November 25, 1974
    Date of Patent: December 7, 1976
    Assignee: John F. Duncan
    Inventor: Jay J. Wood
  • Patent number: 3995699
    Abstract: 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: Grant
    Filed: December 11, 1975
    Date of Patent: December 7, 1976
    Assignee: Wallace-Murray Corporation
    Inventors: Joseph T. Blucher, Ernest A. Evancic
  • Patent number: 3994084
    Abstract: 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: Grant
    Filed: April 9, 1975
    Date of Patent: November 30, 1976
    Assignee: Caterpillar Tractor Co.
    Inventors: Roger M. Smith, Eugene M. Wilson
  • Patent number: 3984929
    Abstract: 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: Grant
    Filed: October 8, 1975
    Date of Patent: October 12, 1976
    Assignee: Caterpillar Tractor Co.
    Inventors: David L. Meyer, Visvaldis A. Stepe
  • Patent number: 3984910
    Abstract: 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: Grant
    Filed: September 8, 1975
    Date of Patent: October 12, 1976
    Assignee: Caterpillar Tractor Co.
    Inventors: Eugene L. Helton, Walter B. Miller
  • Patent number: 3981367
    Abstract: 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: Grant
    Filed: September 29, 1975
    Date of Patent: September 21, 1976
    Assignee: Allis-Chalmers Corporation
    Inventor: John W. Mydels
  • Patent number: 3971323
    Abstract: 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: Grant
    Filed: February 19, 1975
    Date of Patent: July 27, 1976
    Assignee: Teledyne Mid-America Corporation
    Inventor: Richard W. Beiswenger
  • Patent number: 3967398
    Abstract: 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: Grant
    Filed: September 25, 1975
    Date of Patent: July 6, 1976
    Assignee: Caterpillar Tractor Co.
    Inventor: Visvaldis A. Stepe
  • Patent number: 3961788
    Abstract: 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: Grant
    Filed: February 7, 1975
    Date of Patent: June 8, 1976
    Assignee: Caterpillar Tractor Co.
    Inventors: Eugene L. Helton, Nathan Gutman, Donald E. Ribbing
  • Patent number: 3942271
    Abstract: 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: Grant
    Filed: July 8, 1974
    Date of Patent: March 9, 1976
    Inventor: Anthony Joseph George
  • Patent number: 3934654
    Abstract: 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: Grant
    Filed: September 6, 1974
    Date of Patent: January 27, 1976
    Assignee: Kennametal Inc.
    Inventors: Earle W. Stephenson, Leonard E. Toews