Abstract: A spool feed mechanism for a non-metallic, line grass trimmer wherein the free end of the cutting line is spun at high speed for cutting vegetation, includes a spool of cutting line mounted for rotation about the central axis thereof. The spool has first and second ratchet wheels located at respective ends. Each ratchet wheel includes a set of ratchet teeth, one set of which is angularly displaced with respect to the other. A U-shaped, resilient member having first and second pawls provided on the legs thereof is mounted adjacent the spool with the pawls positioned for alternate engagement and disengagement of the respective ratchet wheels. A manually operated trigger assembly coupled to the member moves the latter from a normal position to disengage the first pawl and ratchet wheel and to engage the second pawl and ratchet wheel, whereby the spool is permitted to rotate incrementally to feed a predetermined length of cutting line.

Abstract: 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 housing for the trimming head, which trimming element is wound on a spool provided in the housing. The end-section can be adjusted by a predetermined amount during operation of the apparatus by the intervention of a coupling element whereby the spool is rotated relative to the housing through a predetermined angle, with the coupling element being movable from a lock position to a release position by means of centrifugal forces.

Abstract: A discrete cutting element (18) including a plurality of cutting filaments (26) for use in a vegetation line trimmer (10). In a preferred embodiment provided filaments (26) emanate from a common locus (27) at a filament holder (16) for rotation about the holder's axis of rotation. Certain embodiments can include axially fixed apparatus for conducting the associated filaments (26) away from a spool-like member (23) around which the filaments (26) are wound, and aiding divergence of the filaments.

Abstract: 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 at their free ends are secured by a clamp to a straight portion in the support tube. These handle members have straight and curved portions arranged in combination so that the handgrips reside in a common horizon and with substantially the same angular displacement at the user's hands with the cutting head positioned directly in front of the user's body. With this improved apparatus the user has a comfortable stance with the cutting head before him and can make equal left and right swings without any undue strain or effort during vegetation cutting.

Abstract: A flexible drive transmits torque from a power source to a driven member, such as a power grinder or grass cutter. A safety clutch is interposed between the driven end of the flexible drive and the driven member to automatically disengage the flexible drive therefrom upon overload thereof by virtue of the flexible drive tending to coil up on itself when the driven member is overloaded, to thereby shorten the overall length of the flexible drive to effect a disconnection therebetween until the overload is removed.

Abstract: Disclosed herein is a filament mower comprising a wheel supported housing having an upper deck, a prime mover mounted on the upper deck and including an output shaft extending through the upper deck of the said housing, a string trimmer head fixed to the output shaft within the housing and including a spool carried on the output shaft for rotary movement relative thereto, a spool cover carried on the output shaft for common rotation therewith, one of the spool and the spool cover being movable axially of the output shaft between an upper position and a lower position, means for limiting movement outwardly of the output shaft of the other of the spool and the spool cover, means for biasing the spool and the spool cover away from each other, and interengaging lugs on spool and on the spool cover for interengaging the spool cover and the spool for common rotation when the one of the spool cover and the spool is in the upper position and in the lower position and for permitting relative rotation between the spool

Abstract: A rotary cutting assembly with an automatic filament feed. The assembly includes a driven member which is coupled to a drive source and contains a storage spool for the cutting line. The line or filament is automatically advanced from the spool upon displacement of the same through engagement of a ground engaging hub with a surface. Such displacement causes operation of a ratchet means mounted in part on the movable spool or associated therewith and in part on the driven member to permit a limited rotary displacement of the spool within the driven member during rotation of the driven member.

Abstract: A housing and cutting line assembly for a vegetation cutting apparatus of the type which cuts with rapidly moving lines extending from a rotating housing includes metallic line guides taking a configuration which addresses the effective guiding of the extending of the lines exteriorly of the housing and the dissipation of heat from the lines. The line guides each have a trailing side wall bearing surface for the associated line, which includes two linear surface portions angularly disposed with respect to one another, and a leading side wall bearing surface which includes a linear surface portion and a curvilinear surface portion. The linear leading side wall surface portion is substantially uniformly spaced from an inner, linear trailing side wall bearing surface portion, and the curvilinear surface portion of the leading side wall bearing surface curves away from this inner surface portion.

Abstract: 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 in a radial plane to the shaft axis. A positive filament feed control is used for metering the cutting line to or from the slinger head.

Abstract: 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 rigid objects. A glide knob extends from the bottom of the head for improved control of the device.

Abstract: Handle means provides a frame on which a cutter head may be supported spaced from a hand grip whereby, when the user is standing, the cutter head may be positioned adjacent the ground. The cutter head is a rotatable head including attachment means for attaching at least one flexible flail which extends outward when rotated. The drive means may be electrical or other motor means preferably mounted proximate to the cutter head, but including versions mounted remotely but having an extended flexible shaft enabling drive of the cutter head attached to the rotatable shaft. A circular shield is rotatably supported on the shaft, so that it is independent of the shaft's rotation, preferably outboard of the cutter head. The cutter head provides attachment means which may simply be a hole associated with and opposed to a post or hook, whereby a loop or bight of filamentary material may be placed over the hook or post and the filamentary material extended through the hole which is radially outboard of the motor shaft.

Abstract: A lawn mower comprising a plurality of flexible filament cutter elements carried on a continuous or endless driven belt. The lawn mower includes a plate-like frame having an arcuate front end formed as a portion of a perfect circle, on the underside of which is mounted a plurality of driven pulleys. A drive motor having a drive pulley is mounted on the frame, in a position to the rear of the driven pulleys. A drive belt is operatively mounted around the driven pulleys and around the drive pulley on the motor for driving the driven pulleys. The endless belt which carries the flexible filament cutter elements is mounted around the driven pulleys, whereby when the driven pulleys are rotated by the drive belt, the belt carrying the flexible cutter filaments is moved around the arcuate front end of the mower frame, and the filament cutter elements are moved outwardly by centrifugal force, for cutting engagement with grass and other vegetation, with a flail type cutting action.

Abstract: 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 fulcrum point (52) for the filament which extends through an opening (46) left by the bar.

Abstract: 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 its length for maintaining rotary motion of the blade in the predetermined course upon impact with other objects. The flexibility of the blade is enhanced by mounting the blade for rotation over a course described by a curved surface of revolution and blade durability is improved by providing a means for absorbing impact shock when the blade strikes an object. An improved blade is described having integrally formed resilient means for absorbing the shock of impact.

Abstract: A convenience improvement in rotary mowers, trimmers and edgers of vegetation that have a rotating body from which one or more flexible cord-like filamentous cutting blades or flails extend radially so that additional flail length can be fed from the device by merely bumping the rotating body on the ground. The improvement includes a plurality of spline lugs on one portion which extend into a serpentinous cam slot on another. Bumping of the device on the ground causes the lugs to move from stable positions to other stable positions allowing relative movement between the outer case of the mower and a spool of flail therein so that predetermined length of flail is fed out through the case.

Abstract: In a machine for treatment of tree thinning residues and logging slash of the type having free-swinging flails pivotably connected to rotatable support structures at a pivot point, the improvement is made wherein each flail comprises a cutting blade containing the effective center of mass of said flail, and a plurality of side arms connected at one end of said cutting blade and having at the other end means for pivotal connection to said rotatable support structure, said means for pivotal connection being located on said rotatable support structure and the length of said arms being such that the distance R from the axis of rotation of said rotatable support structure to said pivot point, and the distance L from said pivot point to said flails effective center of mass having the following relationship:R/L=n/2where n is any integer from 1 to 5.

Abstract: An implement for mounting on a tractor to remove suckers and buds from the stems of vines arranged in rows and for trimming during the advance of the tractor along the ground in a direction essentially parallel to, adjacent and between the row of vines, including, a frame supported on a tractor, opposing side arms on the frame arranged on opposite sides of said tractor, removable interchangeable brush treating devices mounted on the outer end of each of the side arms, a drive on the side arms for moving the brush treating device for independent operation on both sides of said tractor, a linkage for mounting the side arms for lateral pivotal movement and for extending the side arms outwardly to a selected distance so as to be able to approach the rows of vines to be treated either on one side or other of the tractor and at the desired height. A hydraulic control system for raising and lowering the frame with respect to the tractor.

Abstract: 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 on the stub shaft and connected to the support member by means of spring loaded centrifugal elements during stoppage of the trimmer. During rotation of the trimmer, the centrifugal elements function to free connection between the disc and the support member by being subjected to the centrifugal force.

Abstract: 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 object, it is deflected rearwardly so as to extend approximately tangentially from the housing. To avoid high stresses in the exiting portion of the filament, the exit opening is inclined rearwardly so that when the filament is deflected rearwardly by striking an object, it extends in a tangential line off of the spool, thereby avoiding bending stresses at the exit opening.

Abstract: An improved powered lawn care implement which can accomplish both reducing of debris and removal of lawn thatch. The implement includes a generally horizontally mounted elongated processing element which carries a plurality of generally radially extending resilient filaments. The implement can be made so that the height of the processing element above the ground surface which is to be worked by the implement can be varied. Free ends of the filaments can thereby be made to engage either debris at the lawn surface or dead vegetative matter located near the base of grass filaments growing in a lawn.

Abstract: 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 has a free end portion which is automatically deployed outwardly from the coil as the cutter head is rotated by a drive shaft upon which the cutter head is mounted against one of the post-like members so as to project radially outwardly therefrom. As one free end portion wears and breaks off as a result of frictional contact with the post-like member from which it projects, another free end portion is automatically deployed outwardly from another post-like member. In one embodiment of the invention a filament retainer plate is disposed over only those post-like members about which the filament is to be wound.

Abstract: 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.

Abstract: A means is described for restraining axial movement of an output shaft of a prime mover which protects the prime mover from undesired axial impact loads applied thereto. The protective means comprises a first body mounted to a rotating output shaft for motion in an axial direction upon the application of a thrust force to the body and a second body which is stationary relative to the output shaft. Means bias the bodies apart and enables mutual engagement therebetween which restricts movement between the bodies in an axial direction when an impact force is applied to the first body.

Abstract: To pick up crop or other strewn materials from ground or other level, a bladed rotor is travelled closely over the materials so as to flick them into a carrier bin, a conveyor chute or the like. The rotor blades are of pliant sheet material each fixed by one longitudinal edge to a rotor shaft so as to be able to extend radially from the shaft, under centrifugal force, when the shaft is rapidly rotated; the back or trailing faces of the distal edge marginal portions of the blades are eccentrically weighted so that, upon rotation, the margins are centrifugally induced to incline angularly in the direction of blade rotation so to exercise a spooning or up-scooping action on the matters to be picked up.

Abstract: 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, preferably a spool (36) is coupled to the drive shaft (32) for rotation therewith whenever the drive shaft (32) is rotated. A driven mechanism, preferably a guide drum (84), is selectively coupled for rotation to the driving mechanism (36). The spool (36) has the flexible filament (66) wound about it and is coupled to one of the driven and driving mechanisms (84, 32) for rotation therewith.

Abstract: A mower of the centrifugal cord type is provided with an automatic adjustment of the length of cutting cord, in which the centrifugal force of the rapidly whirling cord end acts on an arm which snubs the cord and prevents further cord from being paid out, until the wearing away of the cord end reduces the force and permits further cord to be paid out by the centrifugal force until the force again reaches the critical value for snubbing the cord.

Abstract: 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 the device is running to effect the feeding of precise increments of line from the spool to the free line ends. The indexer is automatically self-inhibiting when the line ends reach a predetermined optimum length of approximately eight inches and continues to be self-inhibiting until the line ends wear down, in use, to less than a predetermined minimum length of approximately five inches.

Abstract: 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 following removal of the unit which normally holds the line employed in the line trimming operation. In securing the blower unit in place, a series of spacing studs are employed to orient and prevent lateral movement of the blower unit, and spring clamps extend up over the housing to hold the blower unit onto the motor housing and to hold the impeller in driving engagement with the output drive shaft from the motor. A small supplemental impeller is located adjacent the motor for cooling purposes. The blower unit is spaced downwardly from the motor housing and air is drawn in through the space between the blower and the motor housings.

Abstract: A portable, motor-operated cleaning device for removing leaves and other debris from rain gutters on buildings. An electric motor is pivotally mounted on the end of a telescoping rigid tubular handle with the electric cord for the motor extending along the interior of the handle to a switch mounted on the opposite handle end. A plurality of short sections of flexible line are mounted on the motor shaft for rotation with a high velocity by the motor. Each of the sections of line have a preformed configuration having a portion which extends in a generally radially outwardly direction from the shaft and an integrally connected portion which then extends in a generally concavely curved direction toward the direction of shaft rotation. A bracket is mounted on the motor housing and has a pair of rollers which are mounted at right angles with respect to a third roller to provide for rolling engagement with the horizontal and vertical outer edges of a rain gutter.

Abstract: A portable, electrically energized, cordless grass trimmer device is disclosed having a rotatable hub which is adapted to alternatively mount, for substantially balanced rotation therewith, a flexible cutter strip and a line cutter and mechanical counterbalance.

Abstract: 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 line whenever the free end of the cutting line is reduced to less than a predetermined maximum length in the cutting plane. The cutting line length is always extended to this predetermined maximum length irrespective of the length of cutting line being lost to wear or breakage. The line feeder mechanism is actuated by sensing an operating condition of the head, e.g., angular velocity of rotation.

Abstract: 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 outwardly from the head into a cutting plane. A button member within the smooth surface activates a locking means allowing the spool to rotate in the head and extend a certain length of cutting line into the cutting plane. Then the spool is secured automatically against rotation to the head.

Abstract: A flexible line trimmer for cutting vegetation having a rotary drive for swinging a nylon line. A housing with an actuator button on its bottom is connected to the rotary drive. A spool for the line is located in the housing. An actuator mechanism is connected between the button and the spool for feeding the line out in increments when the button is depressed. Also, the housing is connected to a drive shaft of the rotary drive by a cap. The housing and the cap have sidewalls that overlap each other. Lugs are molded to one of the sidewalls, and mating slots in the other sidewall provide a quickly releasable connection of the housing to the cap.

Abstract: 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 are also disclosed. The mower may include an axial flow fan mounted above the flexible filament cutting apparatus for the purpose of agitating uncut grass and for the purpose of evacuating cut grass particles from the mower housing.

Abstract: A lawn mower using flexible nonmetallic filaments as cutting elements is disclosed. The filaments are mounted on a plurality of rotatable mounting elements. Each of these mounting elements is rotatable about an axis which is slightly tilted with respect to the vertical. The axes of rotation of the mounting elements are so disposed that the filaments appear to travel through overlapping paths when the lawn mower is viewed in top plan. With respect to the normal forward direction of travel of the lawn mower, the axes are "staggered", one of the axes being forward of the other axis.

Abstract: A rotary cutter head for attachment to the powered shaft of a cutting tool. Flexible wire cutters are irregular shape so as to engage abutments formed on the cutter head. The wire cutters may flex along a relatively long segment to prevent cutter damage. Cutter heads are disclosed with abutments for mounting different numbers of cutters.

Abstract: 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.

Abstract: This invention is a device for attachment with a line trimmer to convert it to an edge trimmer. The device has a collar with support legs attached to it and wheels attached to the support legs. A U-shaped brace is attached between the support legs holding them at an angle to each other. The collar is placed loosely around the handle of an existing line trimmer, the line trimmer is inverted in order to make its face perpendicular to the ground, the legs are inserted into the collar and the collar is then secured to the handle with the head of the line trimmer between the ends of the U-shaped brace.

Abstract: A flail for a rotary vegetation cutter. The flail is attached to a rotor and is centrifugally swung around the axis of rotation of the rotor to strike vegetation such as grass and weeds to cut them down. The flail comprises a plurality of metal filaments braided into an elongated strand and an abradable jacket surrounding and embracing the strand. When rotated the flail strikes and cuts objects in its path, the jacekt near its free end abrading away to expose the filaments adjacent to the free end. The strand unravels where the jacket has been removed to form a group of loose metallic filament ends.

Abstract: 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 of the rotary head and the outer periphery of the housing.

Abstract: 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 each rotor carries two cutter members which are driven by rotation of the rotor and through meshing with a stationary gear mounted from a stationary tube which is coaxial with the hollow shaft in the rotor. Six cutters extend from each cutting member and are thus rotated in a direction opposite that of the rotor at a substantially greater speed. A plate member extends from each hollow shaft which has tines connected thereto for moving crop cut by the cutters under the frame and to the rear. The rotors shield the cutters through about 180 degrees of their rotation. Swath forming members are connected to the frame to receive cut crop moved to the rear by rotors whereby same is formed into a swath.

Abstract: A flail-type mowing rotor, spinning about a horizontal axis transverse to its path of travel, has specially configured, swingable cutters that provide finish-cut quality notwithstanding design features that minimize the number of cutters required on the rotor, allow them to be fabricated from stamped, relatively light-gauge metal, and promote quick and easy removal and replacement of cutters as may be necessary or desirable. Each of the cutters comprises a pair of back-to-back, generally L-shaped blades having a medially disposed, obliquely oriented offsetting portion that locates the transverse cutting edge in offset relationship to the plane of the flat mounting portion of the blade. Thus, when the blades are disposed back-to-back on the rotor, the transverse cutting edge formed by the two cooperating blades is interrupted at its midpoint to present a gap through which uncut grass may pass as the rotor spins, thereby wiping the cutter clean and eliminating grass wrap.

Abstract: 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 length (2 inches) from the rotating head under direct mechanical control (no free wheeling). Then the line member is automatically relocked within the head.

Abstract: A weed cutter employing a revolving flexible non-metallic line as a cutting member is provided with means for mechanically feeding out additional line to replace lengths broken during operation of the cutter. A rotatable spool is provided for storing extra line in a coiled configuration, with the unwound portion being threaded into and through a hollow motor shaft, and through a channel in the rotatable head of the cutter to an exit aperture at its periphery. A control mechanism is further provided whereby the spool may be rotated to feed out preselected increments of line when desired, and to oppose rotation of the spool when not desired so as to prevent inadvertent unreeling of cutting line.

Abstract: 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 bearings and provides a journal for the cutting head. An actuator housing bolts to the housing and interfits for rigid support. A mechanical line feeder on the cutting head is operated by an actuating lever carried on the accessory handle through an interconnecting control cable. Reciprocation of the control lever operates the mechanical line feeder so that a predetermined length of cutting line is extended from the cutting head during rotation without interrupting cutting.

Abstract: 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 being vertically and pivotally adjustable for control of the cutter head assembly. The cutter head assembly is also pivotally adjustable about the longitudinal axis of the boom in response a rotatable hand grip at the free end of the handle. Lock means are provided to retain the wheel assembly and the cutter head assembly in selective positions.

Abstract: A convenience improvement in rotary mowers, trimmers and edgers of vegetation that have a rotating body from which one or more flexible cord-like filamentous cutting blades or flails extend radially so that additional flail length can be fed from the device by merely bumping the rotating body on the ground. The improvement includes a plurality of spline lugs on one portion which extend into a serpentinous cam slot on another. Bumping of the device on the ground causes the lugs to move from stable positions to other stable positions allowing relative movement between the outer case of the mower and a spool of flail therein so that a predetermined length of flail is fed out through the case.

Abstract: 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 by an operator is also disclosed.

Abstract: 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 about the perimeter of the base wall. A first rim portion is of a height greater than the hub member and includes first and second spaced mounting ears extending therefrom toward the hub member. A protective shield designed for mounting on the housing in spaced relation from the base wall, is planar and of a similar shape to the base wall. The shield includes first and second tab and shoulder assemblies located for cooperation with the ears on the rim portion of the housing. Joining the last mentioned assemblies and respective ears attaches the shield to the trimmer housing.

Abstract: An attachment is provided for the end of the drive shaft of the motor of a rotary lawn mower, edger, trimmer or the like which comprises an elongated member that extends transversely of said drive shaft and carries at each end a rigid container having removably disposed therein a spool of non-metallic cutting line which extends from the spool and through the rigid container into the cutting plane, means being provided whereby the spools, which are oppositely disposed with respect to each other, may be easily and quickly made capable of either free movement or secured thereagainst; with the spools capable of quick and easy replacement when such is found necessary or desirable.