Rotary blade

An electrically powered grass trimmer with novel provision on the housing for maintaining the motor and housing halves in assembled condition.

A lawn-edge trimmer with a grip at the top of a motor housing, a shield plate at the bottom of that housing overlying a rotor, and a detachable mounting forming a socket for a long-stemmed handle has a motor-control switch with a spring-loaded trigger on the underside of the grip in a cutout of the web-shaped...     

An improved mowing apparatus of the type having a rotatable reel-like casing about which a cutting string made of a high polymer synthetic material is directly wound. The coiled string is protected by a cap which is detachably mounted on the casing and locked for rotation therewith. The free end of the...     

A mowing apparatus of the type having a rotatable disk-like casing containing one or more rolls of flatly and concentrically coiled string made of a high polymer synthetic material. Each coil of the string is interconnected at at least one point to the adjacent coil by the help of a fixing element so...     

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...     

Apparatus for cutting, trimming, and edging vegetation, and the like, is provided with a rotatable disc-like head having a plurality of string-like cutting members removably attached thereto and extending from its periphery for cutting adjacent vegetation and the like. Metallic bearing surfaces and a...     

A power driven shaver of the type that includes a housing that has a prime mover therein, with one end of the housing supporting a transverse thin curved shield. The shield has a number of longitudinally and circumferentially spaced slots therein that are of such dimension that whiskers may extend therethrough....     

A cord-type mowing tool having a cutter body formed with at least one radially extending bore for receiving a cord serving as a grass cutting blade, and a clamping member fitted in the central bottom opening of the cutter body for forcing against the central portion of the cutter body an end portion...     

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....     

Apparatus for cutting, trimming, and edging vegetation, and the like, is provided with a rotatable disc-like head having at least one string-like cutting member removably attached thereto and replaceably extending from its periphery for cutting adjacent vegetation and the like. A pair of knife members...     

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...     

There is disclosed a lawn trimmer/edger incorporating a relatively flexible monofilament cutting element of finite length. A number of techniques are disclosed for temporarily securing the monofilament element to a head attached to the rotating shaft of the edger/trimmer.

A rotary garden cutter utilizes a series of flexible cutter lines conveniently attached to a cutter head. Each cutter line threads into and out of companion apertures in the peripheral wall of the cutter head skirt. Parts of apertures extend circumferentially about the cutter head. A generally cylindrical...     

Apparatus for cutting, trimming, and edging vegetation, and the like, is provided with a rotatable disc-like head having a plurality of string-like cutting member removably and replaceably extending from its periphery for cutting adjacent vegetation and the like. A snap-on resilient string cutter is...     

Disclosed herein are rotary cutting assemblies for cutting growing vegetation with tough whirling filament. The assemblies generally comprise an elongate lineal shaft extending along a vertical-axis, the longitudinal shaft having a top-end for removable insertion into a portable manually-graspable powered...     

A duraguard for a surgical cutting tool consisting of a guard mounting member rotatably mounted within the nose section of the tool housing at two spaced locations and supporting a guard arm extending outwardly along the cutting tool and terminating a protective foot extending over the end of the cutting...     

A vegetable peeler with a handle supporting a cylindrical and electrically rotatable shafted cutter body connected to the handle with a plurality of spaced cutter blades extending longitudinally from the outer to the inner end of the body and a fixed splatter shield partially surrounding and spaced from...     

A filament-trimmer/mower having a wheel mechanism supported frame articulated to provide semi-universal adjustment of the filament-to-work aspect through independent but co-acting side-by-side and fore-and-aft tip mechanisms, shielding being carried by the wheel support mechanism permitting the frame...     

A hand held electrically driven cutter assembly for removing casts from the body of a patient includes a vertically articulatable bottom plate insertable between the cast and the body surface which on the interior of the cutter assembly forms a switch in series with a trigger switch connected to the...     

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 cordless electric lawn edger utilizes a flexible strand of nylon monofilament rotated at high speed to effect cutting of grass and weeds. The rotating assembly mounting the strand is substantially conical in order to reduce drag and prevent grass from wrapping around the assembly. The strand is fixedly...     

A rotary cutting device primarily used for the cutting of vegetation and which includes an outer housing having a motor mounted within the housing. A bobbin assembly which stores a selected amount of a filament permits dispensing of the filament through a hollow drive shaft which is rotated by the motor....     

An apparatus is equipped with a non-metallic thick string of a diameter greater than 0.10 inches for cutting wild vegetation in the forest. The string is endwisely wedged into an acute slot formed in a top spool-like casing and directly wound about the cylindrical portion of the casing. The initial portion...     

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...     

Apparatus for cutting, trimming, and edging vegetation, and the like, is provided with a rotatable disc-like head having a plurality of string-like members removably attached thereto and extending from its periphery. When the head is rotated, the strings will extend therefrom so as to cut adjacent vegetation...     

Apparatus for cutting vegetation comprising a disc mounted for rotation in a generally horizontal plane, a support member protruding from the disc for receiving a cutting blade, an elongated, rigid plastic cutting blade pivotally mounted on the support member and a counterbalance to the cutting blade...     

Apparatus for cutting, trimming, and edging vegetation, and the like, is provided with a rotatable disc-like head having at least one string-like cutting member removably attached thereto and replaceably extending from its periphery for cutting adjacent vegetation and the like. A unitary metallic bearing...     

A surgical milling tool with a hand-operated milling machine for milling the heads or sockets of bone joints of spherical shape is disclosed. The tool is formed of a hemispherical cup integrally formed with a cylindrical skirt and flange and is provided with a plurality of openings of semi-oval shape,...     

Apparatus for cutting, trimming and edging vegetation, and the like, is provided with a rotatable disc-like head having at least one string-like cutting member removably attached thereto and replaceably extending from its periphery for cutting adjacent vegetation and the like. A metallic bearing element...     

A cutter construction for a vegetable peeler that has a cylindrically electrically rotatable body with a longitudinal mounting shaft and a plurality of longitudinally extending slots coextensive with and equally spaced around the body and a cutter blade disposed lengthwise from the body outer end to...     

A spool upon which one or more lengths of filament are wound is provided and housed within a cylindrical cover having one or more generally radial openings formed through one wall portion thereof and the free ends of the filaments are threaded through the openings and extend outwardly therefrom for flail-type...     

A rotary filament attachment to replace the rigid steel cutter blade on a conventional grass edger device, the attachment comprising a pair of disc members, having central openings and opposed inwardly directed peripheral flange portions or projections to define an annular cavity therebetween for storage...     

An incremental feed system for filament in vegetation-cutting filament trimmers, in which the filament is controlled in unspooling by a gear mechanism which is responsive to cutting-operation-induced torsional vibration relative to the driveshaft to feed fresh filament in amount proportional to the torsional...     

A manually held and manipulated knife for trimming a comestible product such as meat having a frame or frame assembly including a hand grasp or handle part extending radially outwardly from a ring-like part of short axial length and of considerable greater diameter than its axial length, a power driven...     

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 cutter head for a lawn trimmer or the like has a die cast head body comprising a top circular wall and a depending hub, with a plate riveted to the bottom of the hub for forming a spool to receive a winding of flexible cutting line such as monofilament nylon. A peripheral depending skirt on...     

Apparatus for cutting, trimming, and edging vegetation, and the like, is provided with a rotatable disc-like head having at least one string-like cutting member removably attached thereto and replaceably extending from its periphery for cutting adjacent vegetation and the like. An electrical drive motor...     

Apparatus for cutting, trimming, and edging vegetation, and the like, is provided with a rotatable disc-like head having at least one string-like cutting member removably attached thereto and replaceably extending from its periphery for cutting adjacent vegetation and the like. Metallic bearing elements...     

Apparatus for cutting vegetation with a rotating head carrying cutting line extended into a cutting plane. Additional line is extended into the cutting plane by pushing a ball member against the ground while rotating the head. The ball member moves inwardly for releasing a spool carrying coiled cutting...     

A manually held and manipulated knife for trimming a comestible product such as meat having a frame or frame assembly including a hand grasp or handle part extending radially outwardly from a ring-like part of short axial length and of considerable greater diameter than its axial length, a power driven...     

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 by pushing the head against the ground and rotating the head. A glide ball on the head moves...     

An apparatus for cutting vegetation with a rotating head carrying a flexible, non-metallic cutting line wound on a rotatable spool with its free end extended radially into a cutting plane. An additional length of line is extended into the cutting plane by pushing the head against the ground to move inwardly...     

An apparatus for cutting vegetation wherein at least one line member protrudes exteriorly of the sidewall of a housing which is rotatable about a rotating axis. The line member is a tape and is wound upon a spool, which is mounted within the housing so that the width, which is greater than the thickness,...     

A hand knife having a ring-like rotary blade the diameter of which is considerably greater than its axial length rotated by a motor in a handle extending normal to the axis of rotation of the blade. The blade of the knife is rotatably supported in a housing that surrounds a part of it and which can be...     

An improved cutting assembly for rotary lawn mowers, edgers, trimmers or the like, including a body member arranged for rotating about an axis normal with the cutting plane. At least two cutting lines are attached to the body member on a compound spool for rotation therewith in the cutting plane. The...     

A handle for free-cutting devices which includes a handle member provided with holding elements, a clamping device for detachably connecting the handle member to the handle, and a carrier for a shank carrying the cutting tool of the free-cutting device. The clamping device is arranged on the carrier....     

A manually held and manipulated knife for trimming a comestible product such as meat having a frame or frame assembly including a hand grasp or handle part extending radially outwardly from a ring-like part of short axial length and of considerable greater diameter than its axial length, a power driven...     

An improved cutting assembly for rotary lawn mowers, edgers, trimmers or the like, including a body member arranged for rotating about an axis normal with the cutting plane. At least two cutting lines are attached to the body member on a compound spool for rotation therewith in the cutting plane. The...     

A hand knife having a ring-like rotary blade the diameter of which is considerably greater than its axial length rotated by a motor in a handle extending normal to the axis of rotation of the blade. The blade of the knife is rotatably supported in a blade housing that surrounds it and which can be removed...     

A portable power operated tool for cutting brush, mowing grass and the like which comprises a cutting implement mounted at one end of an elongated tubular housing and driven by a lightweight engine connected to the other end of the tubular housing, a fixing element for receiving and fixing a front part...     

Apparatus for cutting vegetation with a rotating head carrying non-metallic cutting line extended into a cutting plane. Additional line is extended into the cutting plane by pushing a ball member against the ground while rotating the head. The ball member moves inwardly for releasing a spool carrying...     

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 lawm trimmer chain saw conversion attachment has a mounting blade which mounts to a chain saw power head in place of the chain bar. The blade supports a housing formed of complementary die-cast halves which contains bevel gears between an input shaft that is chain driven at reduced speed from the saw...     

A window putty removal apparatus is provided which can be conveniently utilized with various window sizes and configurations without the necessity of removing the window sash from its frame. The apparatus includes an elongated flexible guide strip of variable effective length so that it can be applied...     

A self-threading housing for vegetation filament trimmers of the type having a supply within and movable relative to a housing to feed filament through an opening in the housing, for extension as a free end of filament swung in orbit as a cutting length of filament, by the filament trimmer. For self-threading...     

Apparatus for cutting vegetation with a rotating head having a ball member portion and carrying non-metallic cutting line extended into the cutting plane by pushing the ball member against the ground while rotating the head. The ball member portion moves inwardly and a spool carrying coiled cutting line...     

An anti-tangle, feed correcting improvement for line handling in a filament trimmer circular cutting head of manual-feed, commercially available type having a slotted-rim-cup-shape and holding the spool or spools of filament with cutting length of filament emerging from the slot, includes an elongate...     

A line supply spool rotatably confined co-axially within a thin housing shell having a splined mounting on a polygonal arbor through which said housing shell is supported at the lower end of a manually supported engine powered handle while the shell is being spun at a high speed on a vertical axis, free...     

A wheel mounted power driven sweeper for cleaning hard to clean floors such as hardened animal manure from animal houses, concrete slabs in feed lots, of any other type application requiring a sweeper for cleaning material therefrom. The sweeper characterized by having a plurality of circular brushes...     

A grass trimmer includes a housing having a lower base wall from which extends a hub member of a predetermined height coupled to a motor encased in the housing, which motor drives the hub member rotatably. A cutting line element is attached to the hub member. A rim extends outwardly from the housing...     

A grass cutting attachment for an electrically powered handyman's drill is disclosed. A length of flexible filament extends radially from a body rotatable by the drill. The rotating filament end is able to cut both edges of lawn and expanses of lawn. A handle attachment which prevents stooping and bending...     

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 elongate handle extends upwardly rearward from a frame which carries a forwardly extending boom. A motor carried by the frame rotatably drives a cutter head assembly at the free end of the boom. The frame is supported by a rearwardly located pair of wheels and a forward wheel assembly, the latter...     

A cutter to remove corneas from eyes which includes a body adapted to be placed and held on an eye and which has a rotatable carriage including a contact lens which rests against the surface of the cornea to restrict movement thereof and which has associated therewith a knife, the depth of cut of which...     

An improved apparatus for cutting vegetation which is especially adapted to be employed with units having a top mounted gasoline motor interconnected by a drive tube to a lower rotating cutting head. An accessory handle is carried adjacent the motor. A housing carried on the lowermost drive tube encloses...     

A hand-held peeler for vegetables and the like having an elongate housing containing a fluid driven motor and a bladed drum. In one embodiment, the motor is connected to a source of pressurized water with a hose. A detachable hollow drum having axially aligned, elongate blades mounted at the circumference...     

An apparatus, such as an edger, trimmer or lawnmower, for cutting vegetation using a flexible non-metallic line member extending into a cutting plane from a rotating head (e.g., U.S. Pat. Nos. 3,708,967, 3,826,068; 3,859,776). At the user's signal during cutting, the line member is fed to a certain discrete...     

A cord-type mowing machine comprises a rotary head in the form of a housing containing a coil of nylon cord therein. An uncoiled end portion of the cord extends downwardly through the bottom of the housing and is fixedly secured to the housing on its underside and at a point between an axis of rotation...     

A drive and frame shaft assembly for a lawn trimming tool or the like, having a bent portion to dispose the tool end of the assembly at an angle to the head end thereof. A curved assembly of a frame shaft and sheath for a flexible drive shaft is formed by, first, assembling onto a straight rigid sheath...     

A portable motor driven working implement for agriculture and forestry, especially brushcutter, which includes a first implement part subjected to vibrations which through the interposition of at least one elastic insulating element is connected to a second implement part on the side of a handle of the...     

An apparatus for cutting vegetation has a rotating disc-like head with a drive connection on one face and a second face having a smooth surface. The head carries internally a spool mounted for independent rotation. A flexible, non-metallic cutting line is coiled about the spool and has a free end extending...     

Apparatus for cutting vegetation with a rotatable head carrying a non-metallic cutting line extended into a cutting plane. Additional line is extended from a supply line coil within the head into the cutting plane without independent operator action. A mechanism in the head automatically feeds replacement...     

An improved blade holder construction for rotatably mounting a circular-shaped meat-cutting blade on a handle having power drive means connected thereto. A metal ring is formed with an interior annular blade-receiving groove, and is split at one point on its periphery. A pair of axially extending, upstanding...     

A universal blower unit is provided which may be directly attached to any of the most widely distributed flexible line type grass or weed trimming tools, known as "Line-Trimmers" and sold under various designations including under the trademark "WEED EATER". The blower unit is secured to the motor housing...     

A rotary cutter head mounted on the end of a handle to power rotate at high speed one or more centrifugally whirled free ends of a reserve of nylon line wound on a spool co-axially pivotally mounted within the head. A co-axially spring biased indexer is subject to inertia applied through the handle while...     

Apparatus to cut a carpet into two sections with the edge of each section being beveled. The apparatus employs two rotary cutters mounted at an angle to each other and which are driven at the same speed in the same direction.

A device (10) for metering discrete lengths of filament utilized in a flexible filament vegetation cutting device is disclosed. The line metering device (10) is preferably used in flexible filament lawn mowers. An electric motor (28) rotatively drives a drive shaft (32) about its axis. A driving mechanism,...     

A grass cutting apparatus including a belt-shaped cutter of the rectangular shape in cross section having a small thickness and pointed edges at its opposed short sides, the belt-shaped cutter being formed of a macromolecular compound and wound on a reel loosely fitted on a hub of a rotary casing.

In a filament type trimmer a filament is wound on a storage spool in a rotating housing and exits through an opening in a rim portion of the housing. When the extending portion of the filament is rotating freely, it extends approximately radially from the housing. However, when it hits a relatively stationary...     

A lawn trimmer comprises a housing fixed to a rotating shaft and containing a spool therein and a stub shaft threadedly received in the rotating shaft. A support member is provided for holding the spool against the housing and fixedly secured to said stub shaft. A ground engaging disc is rotatably mounted...     

A portable, cordless, electrically energized grass trimming device is disclosed having a rotary cutter blade which is formed of a flexible strip of material and which is mounted for rotation over a predetermined course. A blade stabilizing means is provided for restraining the blade along a segment of...     

Filament-type vegetation trimmer (10) having a rotating hollow output shaft (28) through which monofilament line (22) projecting beyond (56) the gyrator trimming end of the output shaft provides the cutting means to trim grass and weeds. A transverse bar (44) across the output shaft trimming end creates...     

A head for a rotary drive designed for trimming of vegetation. The head includes two circular plates coaxially arranged with pivotally mounted plastic blades positioned on pins between the plates. The blades are held outwardly by centrifugal force but are free to rotate to between the plates when contacting...     

An improved filament trimmer of the type in which a rotary drive means having a hollow filament feed shaft is frame mounted and has an improved slinger head attached to said hollow shaft with an arcuate bore therethrough in open communication with the hollow shaft for swinging the cutting filament line...     

An improved apparatus for cutting vegetation, comprising a motor and a rotating cutting head mounted at the ends of a support tube. One or more flexible non-metallic lines extend into a cutting plane from the cutting head. Unique first and second tubular handle members carrying cylindrical handgrips...     

Apparatus for trimming plants, which apparatus includes at least one handle and a rotating, powered trimming head, which trimming head includes at least one flexible, filament-type trimming element, especially a synthetic or plastic filament or thread end-section, extending beyond the periphery of the...     

In a filament type trimmer in which a filament is wound on a storage spool rotatably mounted in a rotating housing having a rim portion, the filament in passing from the spool to an exit opening in the rim portion of the housing extends through a flexible tubular guide which wraps approximately one turn...     

Apparatus for cutting vegetation with a rotatable head carrying a non-metallic cutting line extended into a cutting plane. A supply line coil is carried within the head. A mechanism in the head automatically feeds replacement line from the coil to constantly maintain a predetermined maximum length in...     

In a mowing machine having an engine for driving a rotary blade via a centrifugal clutch, a shaft and a reduction gear assembly, the outer diameter of the shaft is selected such that the torsional natural vibration frequency of the rotational system extending from the engine to the rotary blade is less...     

A scarifying tool is disclosed suitable for use in conjunction with disc floor maintenance machines. The scarifying tool includes a support plate with a plurality of resilient or flexible members attached thereto. The flexible member may be lightweight spring-steel strap material one end of which is...     

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 hand-held kitchen utensil having a manually operable rotary drive mechanism including a helical grooved spindle housed within a tubular protective sleeve. The drive mechanism is actuated by the alternate application of a substantially vertically directed downward force which slidably displaces the...     

An apparatus for cutting vegetation wherein at least one line member protrudes exteriorly of the sidewall of a housing which is rotatable about a rotating axis. The line member is a tape and is wound upon a spool, which is mounted within the housing so that the width, which is greater than the thickness,...     

A device for storing and automatically metering monofilament line for a filament weed cutter comprising a spool having a hub and opposing flanges for holding a supply coil of the filament; and a support member having a top flange, a core for receiving the spool, and retaining members disposed radially...     

An improved handpiece for a meat-cutting tool of the type having a cutting blade rotatably mounted on a blade holder which is mounted on one end of the handpiece. A flexible drive cable enters the opposite end of the handpiece and is drivingly engaged with the blade by a pinion gear. The handpiece has...     

A string trimmer having a handle, frame, motor and head. The head includes a housing formed by a cover and a base which contains a coiled supply of trimming line. The lower housing member has a central opening and a radial passage for the trimming line so that the trimming line can be fed from the storage...     

A lawn trimmer has a tubular shaft assembly which structurally and drivingly connects an upper power head to a lower rotary tool head in a lawn-trimming tool. The assembly includes a bent portion to dispose its opposite ends at an angle to each other, and comprises an outer frame shaft of relatively...     

A filament type vegetation trimmer having slinger head for rotating a portion of the filament in a radial plane is provided with a filament support tube for supporting the filament in the radial plane, the filament support tube being provided with apparatus which coact with apparatus provided in the...     

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...