Rotating cutting disk

A rotary mower of the type having a plurality of side-by-side cutter discs carried on an elongated beam whereby at least the outermost cutter disc of two cutter discs, which are located on the grassward or outboard end of the beam, is provided with paddle means for conveying cut crop inwardly from the...     

A mowing machine has a frame, including a coupling frame and a laterally extending support beam on which a rockable beam with mowing members are rotatably mounted. A further beam and a boom interconnect the support beam in operative position. By repositioning the further beam and pivoting the support...     

A mowing implement comprises a housing extending transversely of the direction of travel of the implement, said housing being connected via a foot which is directed rearwardly from the housing with suspension means for fastening the housing to a vehicle. As a result the mowing implement may be fastened...     

A mowing machine has a laterally extending frame part of a coupling frame part and a plurality of rotary circular cutters mounted on the laterally extending part. Driving means, including an in-going shaft connected to the prime mover power take off, is geared through boxes to an upwardly extending shaft...     

This invention relates to mower blades made of metal with an inner layer of extremely hard material and so devised that attrition in use serves to maintain a sharp cutting edge.

This invention relates to a power cutting means normally mounted on a tractor structure for support and receives power therefrom through a power take-off shaft. The power cutting means includes a support and connector means attachable to the tractor structure; a power drive means mounted on the support...     

A carrier adapted for rotation about an axis so as to define a circular path at the outermost extension of the carrier. Anchoring means positioned on the carrier at spaced locations along said circular path. A flexible elongate member extending between and fastened to said anchoring means. At least one...     

A safety guard assembly for a rotary-type cutter such as the cutting blade of a rotary lawn mower. The safety guard assembly is in the form of a cage made of a plurality of parallelly disposed non-cutting individual guard members surrounding the cutting blade about its cutting edge and disposed along...     

Disclosed is a lawn mower having several pairs of rotatable blades attached to a rotatable frame. The rotatable frame is motor driven, and centrifugal forces cause a frictional engagement between blade driving means and a portion of the frame so that each pair of the blades assume a planetary rotary...     

In a cordless electric rotary lawnmower, for example, of the type having two counter-rotating blades, a blade configuration providing substantially improved efficiency and performance is disclosed. The lawnmower is battery operated and each blade in a twin blade mower, or the single blade of a single...     

The grass trimming apparatus includes an elongated frame structure having a front base portion and a rear handle portion, a single ground engaging wheel adjacent the rear end of the base portion, and a motor and cutter unit assembly on the forward end of the base portion. The lower portion of the motor...     

A filament-bearing plate or disk system for cutting grass and the like in which the filament is wound upon later-closed serrations in the disk periphery rather than passed through a succession of holes in the disk periphery; embodiments of the invention have respectively resilient, malleably deformable,...     

An improved cutter assembly adapted for use with a rotary edger comprising a circular spool for storing peripherally thereon a plurality of plastic filaments, such spool being receivable within a circular retainer which in turn is provided with a plurality of radially extending peripheral openings formed...     

An apparatus for cutting, trimming, and edging vegetation along driveways, sidewalks, and the like; around trees, shrubs, and like landscaping; and adjacent fences, walls, posts, and the like by rotation of a non-metallic cutting line in a cutting plane substantially perpendicular to the axis of rotation....     

A mowing device comprising a housing extending transversely of the direction of movement of said device, a plurality of freely cutting cutting members rotatably journalled on said housing and a driving gear arranged in said housing and formed by a series of gears for driving the cutting members, has...     

In a mowing implement, wherein mowing members are rotatably journalled above a housing accommodating a driving gear, stones may be jammed between the mowing members and the housing. Damage of the mowing implement through stones is avoided in that each mowing member mainly comprises two cutter supports...     

A rotary motor comprises an upper rotating collar section and a lower rotating disc, and mounted between the collar section and the disc a predetermined number of knife blades which are rotatable about their mounting and located toward the collar and disc periphery in a manner to prevent damage when...     

Apparatus is provided for cutting vegetation with a flexible non-metallic string-like member in the manner of a flail. A circular body with one or more peripheral apertures is concentrically mounted on the shaft of an electric motor for rotation in a cutting plane, and a section of non-metallic line...     

A grass cutting and trimming blade having a rigid main bar adapted for rotation either in a vertical or horizontal plane, a pair of wire forms for cutting elements removably attached one at one end of said main bar and one at the other end of said main bar, each of said cutting elements adapted for cutting...     

Two blades of the cutter blade assembly are pivotally mounted separately by means of a coupler on opposite sides of a drive shaft and move to an extended position by centrifugal force. Upon one blade striking an inseverable object both blades are caused to move to a retracted position. In moving from...     

An edger blade uniquely designed to cut into the surface of the ground thus loosening a portion of the dirt, lifting the loosened dirt from the ground, and throwing the dirt to one side. The blade is adaptable for mounting on most home garden edgers powered by internal combustion engines. The blade has...     

A safety guard assembly for a rotary-type cutter such as the cutting blade of a rotary lawn mower. The safety guard assembly is in the form of a cage made of a plurality of parallelly disposed non-cutting individual guard members surrounding the cutting blade about its cutting edge and disposed along...     

An arbor assembly for use with rotary mowers, and the combination of such arbor assembly with a mower blade subassembly and with a pulley subassembly. The arbor assembly comprises a shaft having reduced diameter end portions defining upper and lower shoulders against which are seated the inner races...     

A cutter for a lawn mower has a rotating disc for mounting on a driving mechanism, the disc having a cavity therein and two openings at diametrically opposite points in the periphery of the disc and opening out of the disc from the cavity. A guide member is provided on the opposite side of the each opening...     

A lawn mower for cutting grass, comprises a frame having an open bottom and being closed on the sides except for a lateral discharge opening. A drive motor is supported on a top closed cover of the frame, and it includes a drive shaft which drives a rotatable cutter disc which is rotatably supported...     

A mowing device having rotating cutting members above a transverse housing comprises a screen arranged near one end of said housing and having a front portion disposed in front of the outermost cutting member, viewed in the direction of travel, and being located just inside the outermost path of said...     

A mowing device comprises a housing extending transversely of the direction of movement of said device, a plurality of cutting members rotatably journalled on said housing and a driving gear accommodated in said housing for driving the cutting members, each cutting member comprising at least one ring...     

A filament-type trimmer comprises at least one filament spool carried by a rotary housing driven by a motor the speed of which increases with decrease in load. Means for normally restraining rotation of the filament spool relative to the casing is responsive to centrifugal force to release the spool...     

A mower comprises a housing extending transversely of the direction of movement of the mower, wherein cutting members rotatably journalled on said housing each comprises one lower ring sweeping across the housing, an upper ring arranged above the lower ring and three cutters arranged at the circumference...     

A mowing device comprises a transverse housing and cutters rotatably mounted thereon, each cutting member comprising at least one lower ring skimming the top surface of the housing and having a substantially circular, uninterrupted circumference, an upper ring covering the lower ring and at least one...     

A rotary-type lawn mower is provided with cutting means comprised of a rotatable disc-like member having a plurality of flexible non-metallic cords projecting radially from its perimeter. The disc-like member is rotated within the cutting plane by a suitable power source such as a conventional gasoline-driven...     

A power driven circular saw blade for cutting brush is extensible with scythe tips mountable diametrically thereon for cutting grass. The saw blade is horizontally mounted in a recess defined between forwardly extending sides of a wheeled cart, the sides acting as brush guides and stabilizing against...     

Disclosed herein is a lawn mower comprising a blade housing, a member adapted for rotation within the blade housing and having a peripheral edge, a blade movably secured to the member for movement between a retracted position wherein the blade is positioned inwardly of the peripheral edge, and an extended...     

Disclosed is a lawn mower having several pairs of rotatable blades attached to a rotatable frame. The rotatable frame is motor driven, and centrifugal forces cause a frictional engagement between blade driving means and a portion of the frame so that each pair of the blades assume a planetary rotary...     

A mowing device comprises a housing extending transversely of the direction of movement of the mower, a plurality of cutting members rotatably journalled at said housing and a driving gear accommodated in said housing for driving the cutting members, each cutting member comprising at least one disc skimming...     

A mowing implement comprises a number of rotating cutter members which are arranged next to each other and above a housing and which are slip-free coupled with each other by means of a driving gear arranged inside said housing, while said cutter members are driven by at least one motor arranged beneath...     

A rotary mower in which grass cutting and collection of cut grass particles is achieved with a relatively low blade tip speed. A cutting blade is mounted for rotation about a vertical axis within the symmetrical expansion type mower housing in which the expansion top wall has a substantial rise to a...     

A mulching type of lawn mower including a mower housing and a cutter blade therein and with vertically adjustable wheels on the housing. A comb member with a drag flap or panel is attached to the housing at the rear thereof and extends downwardly toward the ground in two sections, with the forward one...     

A mowing implement comprising a housing extending transversely of the direction of movement of the implement, a plurality of cutting members rotatably journalled on said housing and a driving gear train driving the cutting members and arranged in said housing and formed by a series of gears, each cutting...     

A safety blade for a rotary mower along with a rotary mower is provided in which the rotary mower has a blade housing with an annular band mounted for rotation therein. The annular band has teeth encircling the edge and is connected to the drive shaft by supporting cross members. The annular band may...     

A rotary mower in which grass cutting and collection of cut grass particles is achieved with a relatively low blade tip speed. A cutting blade is mounted for rotation about a vertical axis within a symmetrical expansion type mower housing in which the expansion top wall has a substantial rise to a discharge...     

A mowing machine is connectable to a tractor's lifting hitch and power take-off shaft. A row of rotors is mounted along the length of a laterally extending support plate that is pivoted to the main frame. Each rotor includes a hub and cutter member assembly on an upwardly extending shaft engaged by a...     

A mowing machine is connectable to a tractor's lifting hitch and power take-off. A row of rotors is mounted along the length of a laterally extending support that includes an elongated supporting plate pivoted to the main frame. The supporting plate can be an integral plate profiled to have an upwardly...     

An apparatus for clearing brush by shredding or pulverizing the brush. The device has a pair of rotatable blade assemblies which are held in a frame. Each blade assembly has a plurality of blade-support shafts and one each shaft a plurality of bars are mounted. The blade assemblies are rotated and the...     

A drive for a mower of the type having a multiple number of vertically disposed drum cutters. The cutting elements are at the bottom of each drum and cut in a horizontal plane. A horizontally disposed pneumatic tired wheel is associated with and acts to impart rotation to each of the drum cutters. External...     

A cutting blade assembly for a lawn mower is provided with mechanism for prestressing the blade to lessen vibration during use and also for adjusting the blade so as to accurately position and align the blade relative to the associated blade housing so that the blade operates in a horizontal plane. This...     

As an article of manufacture, a tapered cutter pin for a rotary mower formed of durable resilient plastic having a shank and terminating at its outer end in a relatively thin but stiffly resilient tip portion, the shank having a head at its inner end for retaining the pin in the disc. With the pin supported...     

A safety attachment is provided for use with a rotary lawn mower to prevent substantial injury to anyone whose extremity may accidentally strike the cutter. The attachment includes a relatively large annular disc mounted to the drive shaft of the motor for rotation about a vertical axis and at least...     

A fully automatic self-propelled self-guiding lawn mower in which guidance of the lawn mower is based on the principal of a magnet following a passive ribbon or wire of ferromagnetic material. The lawn mower includes two drive wheels located on opposite sides of the vehicle. Each drive wheel is connected...     

A mowing device includes at least a pair of cooperative rotary cutting mechanisms. Each cutting mechanism comprises a driven carrier and at least one cutter pivotally connected thereto and projecting radially therefrom. Mounted below each carrier is a cutting plate having a cutting edge above which the...     

An improved filament for use in the cutting of weeds and vegetation, wherein the filament is attached at one end to a hub for imparting rotary motion to the filament. The centrifugal force extends the filament radially outwardly from the hub, with the energy of rotation being utilized to sever or cut...     

A filament-bearing plate or disk system for cutting grass and the like in which the filament is wound upon later-closed serrations in the disk periphery rather than passed through a succession of holes in the disk periphery; embodiments of the invention have respectively resilient, malleably deformable,...     

An aquatic weed cutter for cutting aquatic plants and their root systems. The aquatic weed cutter includes a water vehicle having a drive system connected to at least two shafts that project out of the vehicle. Each shaft has a circular cutting blade mounted at the distal end of the shaft. The cutting...     

A mowing machine adapted to be connected to a three-point lifting device of a tractor and powered by a power take-off therefrom, the mowing machine extending laterally to the side of the tractor and having two mowing assemblies, each of which includes a rotor which is powered by a gear chain and belts...     

A disc mower which is silent in operation and simple to maintain. The mower comprises a casing (1) on top of which is mounted at least one pair of rotatable cutter discs (8) driven by a belt transmission (9) housed within the casing (1). The casing (1) has a base portion (3) and an upper portion (2)...     

A rotary mower cutter having a reciprocably actuated cutter-bar mounting axially spaced thereon for rotation a plurality of rotary discs constituting cutters. The discs are each provided with pivoted eccentric masses responsive to rotation of the discs to develop a flywheel movemment on each disc cutter.

An improved rotary lawn mower utilizing a novel cutting apparatus for increased safety. The cutting apparatus comprises a cutting wheel disposed within a blade cover, a protective housing releasably suspended by the blade cover beneath the cutting wheel, and a fan incorporated into the cutting wheel...     

A mowing machine has two or more cutting members adapted to rotate about a vertical axis and each provided at the bottom with an annular skirt having cutting knives mounted thereon. Each skirt has a series of upwardly inclined sectors arranged circumferentially therearound. The mowing machine may also...     

A suction and blower fan device of simple construction is disclosed for use with a rotary mower blade mounted upon an upright shaft within a mower housing. The fan device operates to improve the cutting efficiency of the mower blade and functions to produce scouring of the mower housing to a degree,...     

A mowing machine which extends laterally of a tractor and is connected to the lifting device of a tractor which has a frame and two rotors driven through gearing from the power take-off of the tractor. Each rotor includes a hollow tube driven by gears in the frame which causes the rotor to rotate and...     

A mowing machine has an elongated beam that supports side-by-side rotors with pivoted cutters positioned to cut overlapping paths in front of the beam. The rotor units include an upper rotatably hub with pivoted blades and lower bodies which house corresponding driving shafts. The units are releaseably...     

Disclosed herein is a separable mower blade comprising a stem portion affixed to the drive axis of a rotary type mower shaft, a blade connected thereto and a slot disposed on the blade for reception of a bolt which is affixed to the stem portion so as to fasten the two together. A shroud is provided...     

The device is applicable to a lawn mower of the rotary type having a rotor on a vertical axis, with cutting blades movable to an outer active position in which they extend radially beyond the rotor, and an inner inactive position in which they are retracted within the rotor; a solenoid is utilized to...     

A lawnmower using flexible non-metallic filaments as cutting elements is disclosed. In certain specific embodiments the lawnmower may include a stored supply of four lengths of such filament, the free ends of which protrude from a member driven about a nearly vertical axis. Means for metering out line...     

A device for mowing crop comprising a pair of discs adapted to rotate in the cutting plane, driven with equal angular speeds and pairwise in opposite senses and having each outwardly projecting cutters. A cutter may be bent upwardly due to impact on a stone. In order to avoid further damage of the device...     

Mowing apparatus for connection to the lifting device of a tractor which is powered by the power take-off of the tractor. The apparatus includes a three-point trestle for mounting on the three-point lift device of the tractor, the trestle supporting a parallelogram suspension gear for the mowing component,...     

In order to prevent the adhesion of crop to a swath board of a mowing device, the or each swath former comprises an endless member passed around a foremost and a hindmost reversing element, viewed in the direction of movement, the crop advancing run of said member being at an acute angle to the carrier.

An automatic development reel type cutter head for a filament trimmer comprises a circular base member having a circular array of post-like upstanding members and a filament coil disposed about selected of the post-like upstanding members and inside of the remaining post like members. The filament coil...     

A road grader of the type including a tiltable and vertically adjustable frame is utilized to dependingly support a heavy duty multibladed horizontal rotary cutter head. The frame supports a prime mover drivingly connected to the rotary cutter head and the latter includes a horizontal disc from which...     

A clipping apparatus for bushes and grass intended to be attached to a tractor or like vehicle and comprising two rotatable blades having cutting edges. The blades are operative to produce a clipping action in co-operation with an underlying toothed means. One of the blades, when seen in the direction...     

Two embodiments of mowing machines wherein the cutters are resiliently deflectable to within a guard. In both embodiments, the frame of the mowing machine is connected to a tractor and extends laterally therefrom, the mowers being powered from the power take-off of the tractor by a train of gears, shafts...     

A cross flow rotary mower has a rotor with horizontal outer cutting edges and upwardly extending blower vanes. A conduit having upper, lower and side walls cooperates with the rotor to form a cross flow blower. The rear semi-circle of travel of the rotor is within the conduit. The inlet opens forwardly...     

The invention is concerned with the reduction of the vibration transmitted from a mechanism having at least one element rotating at a fundamental frequency and one or more cyclically displaceable further elements connected to said rotating element, and in which the displacements of said further elements...     

A powered lawn mower adapted to slice grass into small pieces and to disperse these pieces on the lawn to provide a mulch therefor to enrich the soil without impairing the appearance of the lawn. The mower includes a multi-bladed, multi-level rotor having a central hub which is driven to rotate about...     

A mowing machine for connection to the three-point hitch of a tractor which extends laterally of the tractor. A drive of meshing pinions contained in a housing, the drive being powered via belts from the power take-off of the tractor. The drive rotates the cutting members about vertical axes which are...     

An improved lawnmower blade for cutting in a substantially horizontal position, of the type including a strip of metal having a substantially flat central region and end portions provided with cutting edges on opposite sides of the blade, the cutting edges being at a level lower than the central region...     

A hollow and generally closed body 10 of a safety rotor fits on the motor shaft 12 of a rotary mower and replaces a conventional mower blade. The diameter of body 10 is from 0.5 to 0.9 times the width of the swath of the mower, and several strands 11 extend far enough outward from body 10 to cut to the...     

A cutting blade for brush and weed cutting machines and the like includes a unitary body with radially extending cutting arms molded from a durable high strength plastic material consisting of approximately 5% glass fiber embodied in nylon.

A pruning boom for pruning or trimming trees, bushes, shrubs and the like. A plurality of circular saw blades are rotatably mounted on a saw carrying member. Each saw blade is positioned for rotation in a spatial plane which intersects the spatial plane containing the surface of the saw carrying member...     

A lawn care device is provided which essentially consists of support beams or rotary cutter blades which are mounted onto the vertically disposed drive shaft of conventional lawn motors. The support beams are provided with receiving means, support-like bars, trunnions and the like, for pivotably mounting...     

A rotary blade for a pruning machine which comprises a flexible disc made from a high molecular weight elastomeric material, said disc having a plurality of blades projecting radially from the periphery of said disc and a mounting hole disposed in the center of said disc.

A chuteless rotary scything mulching lawn mower is described which is particularly adapted to be powered by an electric motor including sealed motors. The cutting chamber includes a toroidal portion bounded by concentric skirt walls wherein the cross sectional area of the toroid increases towards the...     

In a mowing implement comprising a housing and a number of cutting members rotatably journalled on said housing the danger of damage of the implement due to stones jammed between a cutting member and said housing is avoided in that each cutter is fastened to the top side of a holder skimming the top...     

An apparatus for cutting vegetation with a rotating head carrying a flexible, non-metallic cutting line extended radially into a cutting plane. An additional length of line is extended into the cutting plane automatically during rotation of the head as its speed increases from a first magnitude to a...     

A powered lawn mower adapted to slice grass into small pieces and to disperse these pieces on the lawn to provide a mulch therefor to enrich the soil without impairing the appearance of the lawn. The mower includes a multi-bladed, multi-level rotor having a central hub which is driven to rotate about...     

Safety Rotary Lawnmower Disc Blade that uses vacuum to draw flexible material to the cutting edge but will not suck up rigid materials. Both the vacuum generating element and cutting edge are located on the same side of the disc blade.

A rotary lawn mower (2) has a rigid cutting blade (6) rotatable in a housing (4). A filament holder (12) is releasably attached to blade (6) through aperture (16) by mounting means consisting of tab (22), neck (24), and collar (26). Filament holder (12) releasably contains a filament (14) which extends...     

An improved blade for a rotary lawn mower includes cutting elements which are removably attached to a base member. The removable elements may be made of a higher quality steel than the base member and may be easily removed for sharpening or merely replaced with a new element. A removable element is held...     

A lawn mower having a plurality of rotors with whip rotary blades arranged under a housing around a shaft, each having a guard over it adapted to be pulled up so that the whip blade can trim edges around trees and next to buildings.

A rotary-type lawnmower having unique non-metallic cutting elements carried on a rotating disc-like head with a smooth rim and lower exposed surface without significant projections or recesses capable of inflicting injury to human parts. The lawnmower produces a smooth and even cut equal to rotary metal-blade...     

A rotary lawn mower blade mounted on a blade carrier by diametrically spaced bolts is further retained against release from the drive shaft by a retainer fixed on the drive shaft and having a cylindrical shank extending in bearing relation through a central opening in the blade having an enlarged head...     

An elongated blade (21) for a rotary mower is fabricated from a nonrectangular blank (9) so that the lift portions (33, 34) formed on the trailing parts of the blade have radially outer peripheries (41, 42) which lie substantially on a circle (d) generated by the radially outer tips (46, 47) of the leading...     

A mower is provided which has a plurality of cutter supports which are driven to be rotated. One or more of these supports is surmounted by a rotatable shaft; and such support comprises a hub that is rotatable with the shaft thereof, and a plurality of detachable segments, each of which is secured to...     

A disposable cutting edge to be installed upon a lawn mower rotor and an audible tone generator to warn the operator when the disposable cutting edge is not properly installed. A disposable cutting edge providing a quick and safe snap-on/snap-off installation/removal upon a specially constructed rotor...     

There is provided a method and apparatus for felling a tree. A tree is cut through with a circular saw, and then substantially immediately after the cutting, the tree is clasped by a grapple means. The apparatus for cutting the tree may include an offset exposed arc of the circular saw, and by mounting...     

A substantially triangular-shaped multi-directional rotary saw blade suitable for arcuate and plunge cutting is disclosed.

A stalk shredder is mounted upon a cotton stripper, below and immediately behind the cotton stripper. Therefore, the shredder is raised and lowered with the stripper elements and also is in a compact position in relation to the total vehicle. A scythe-shape cutting blade is used.

A rotary mower wherein tall vegetation is cut by selectively exposing a front opening in the housing of the mower, which in turn exposes a portion of a rotating cutting blade.

A novel blade and a rotary mower blade assembly involving use of the blade are described. The blade has (a) an extended inner end portion and (b) a bifurcated outer end portion comprising (i) a forward radially-extending outer segment carrying at least a portion of the cutting edge, and (ii) a rearward...     

A mowing machine has a main frame made up of driving units and intermediate pieces which are mounted alternately on a tie member. The tie member is normally under tension to compress the driving units and the intermediate pieces together to make the main frame substantially rigid. The tie member is positioned...