Abstract: A method of constructing an improved attachment or implement for use with equipment connected to a coupler is provided. The implement has a crossbar which is one of machined, cast or extruded to provide a cross section within at least the connection zone which lacks welds while still providing parallel flats for connecting to a channel in the coupler. The cross section in the connection zone is void-free and seam free.

Abstract: A front loader including: a pair of masts provided to a machine body frame of a work vehicle in a detachable manner; a pair of lifting arms coupled to the masts in a vertically rotatable manner; and a work equipment mounted to the lifting arms. Each lifting arm includes a front lifting arm attached to one of the masts and a rear lifting arm attached to the work equipment, each of the front lifting arm and the rear lifting arm has a hollow, rectangular cross-section. The rear end portion of the front lifting arm is inserted into the front end portion of the rear lifting arm, and is welded. The side plate of the rear lifting arm at a location corresponding to the insertion portion has a protruding portion that extends along the side plate of the front lifting arm, and the protruding portion is welded.

Abstract: In accordance with an example embodiment, a structural attachment assembly for a work vehicle is disclosed. The structural attachment assembly comprises opposing first and second connector ends. The first connector end is arranged for removable or fixed coupling to a frame of the work vehicle and the second connector end is arranged for removable or fixed coupling to another member of the attachment assembly. A support structure is coupled to and interposedly arranged between the first connector end and the second connector end. The support structure comprises a plurality of walls with inner surfaces defining an interior cavity. The interior cavity comprises a first reinforcement member and a second reinforcement member relatively arranged to form a structural reinforcement member that extends substantially through a length of the interior cavity.

Abstract: The present disclosure provides a load carrying member for a machine. The load carrying member includes an outer shell, an inner shell disposed within the outer shell. The inner shell is pre-stressed. The load carrying member also includes a pin disposed through the outer shell and in contact with the inner shell to add stress to the inner shell during operation of the machine.

Abstract: A box-section arm of an excavator or the like has a pivot axis at one side. Two flat plates 25, 26 close the underside of the box-section adjacent the pivot axis, and are welded transversely from a pair of projections 28, 29 at one side, to corresponding pair of projections 28, 29 at the other side. The projections 28, 29 are partially but not wholly removed after welding.

Abstract: In an arm for a construction machine formed as a box-shaped structural body by left and right side plates, an upper plate, a lower plate, and a rear plate, a left rear thick side plate constituting the left side plate, a right rear thick side plate constituting the right side plate, a rear thick upper plate constituting the upper plate, and a rear thick lower plate constituting the lower plate are formed by using a soft steel material having a large plate thickness. A left front thin side plate constituting the left side plate, a right front thin side plate constituting the right side plate, a front thin upper plate constituting the upper plate, and a front thin lower plate constituting the lower plate are formed by using a high tensile steel material having a small plate thickness. As a result, the weight of the entire arm can be reduced.

Abstract: A boom assembly is provided for a material handling machine. The boom assembly includes a boom pivotally coupled to a frame of the machine. The boom has a pair of side plates, a top plate and a bottom plate that are rigidly interconnected. The top plates have a pair of slots which extend therethrough. An arm is pivotally coupled to an end of the boom. A mounting unit extends between a center portion of the side plates. A pair of hydraulic boom cylinders are coupled between the frame and the mounting unit. A pair of spaced apart arm cylinder mounting plates are rigidly mounted to the mounting unit. Each mounting plate extends through a corresponding one of the slots. An arm cylinder is connected between the mounting plates and an arm.

Abstract: A beam structure of the present disclosure includes a baffle plate. A plurality of lap strips are attached around outer edges of the baffle plate. An adhesive layer is applied to outer surfaces of the lap strips. A plurality of sidewalls are assembled together around the adhesive layer, the lap strips and the baffle plate, thereby forming the beam structure. In an embodiment, the beam structure may be used as a boom assembly for a machine, such as an excavator machine.

Abstract: A reinforcement device for a load bearing structure is disclosed. The reinforcement device may include a tubular wall including a first end, a second end, a throat disposed between the first end and the second end, and a curved portion disposed between the throat and each of the first end and the second end. The tubular wall may also include a first dimension at the throat and a second dimension at each of the first and second ends, the first dimension being smaller than the second dimension.

Abstract: A box-section arm of an excavator or the like has a pivot axis at one side. Two flat plates 25, 26 close the underside of the box-section adjacent the pivot axis, and are welded transversely from a pair of projections 28, 29 at one side, to corresponding pair of projections 28, 29 at the other side. The projections 28, 29 are partially but not wholly removed after welding.

Abstract: A boom has a central connection plate attached between a pair of side plates, and a rear portion side of a cover plate on a front boom portion and a front portion side of a cover plate on a rear boom portion are connected thereby. A pivoting support for a working tool cylinder used to move a working tool connected to a foremost portion of the front boom portion is provided on a front side of a top portion on each of the left and right side plates. The central connection plate is formed with a connection plate projection projecting from a front portion attached to the rear portion of the cover plate toward a midway portion so as to approach the pivoting support.

Abstract: In an arm for a construction machine formed as a box-shaped structural body by left and right side plates, an upper plate, a lower plate, and a rear plate, a left rear thick side plate constituting the left side plate, a right rear thick side plate constituting the right side plate, a rear thick upper plate constituting the upper plate, and a rear thick lower plate constituting the lower plate are formed by using a soft steel material having a large plate thickness. A left front thin side plate constituting the left side plate, a right front thin side plate constituting the right side plate, a front thin upper plate constituting the upper plate, and a front thin lower plate constituting the lower plate are formed by using a high tensile steel material having a small plate thickness. As a result, the weight of the entire arm can be reduced.

Abstract: A system for protecting at least one tube extending between articulating joints of a work machine including a first guard configured to be at least partially inserted inside a first opening formed in a second portion that is pivotably connected to a first portion. A second guard is configured to be at least partially inserted inside a second opening formed in the third portion that is pivotably connected to the second portion and near the first portion. The first guard and the second guard form a protective passageway for a tube extending from the first portion to the third portion, the passageway substantially preventing contact between the at least one tube and surfaces of the second portion and the third portion in close proximity with the corresponding pivotable connections.

Abstract: A laminate structure is provided. The laminate structure includes a plurality of laminate layers. The laminate structure also includes a joint interface. The joint interface includes a retention member at least partially disposed between any two of the plurality of laminate layers. Further, the retention member has an opening for receiving a pin retaining member. The retention member is configured to provide a surface for transitioning the pin retaining member to the laminate structure.

Abstract: In left and right web plates (12) of a boom (11), first to fifth web materials (12A to 12E) are joined at edge portions in a front-rear direction along welding lines (13A to 13D). In an upper flange plate (14), a rear upper flange material (14A), a front upper flange material (14B), and a middle upper flange material (14C) are joined at edge portions in a front-rear direction along welding lines (15A, 15B). Ina lower flange plate (16), first to sixth lower flange materials (16A to 16F) are joined at edge portions in a front-rear direction along welding lines (17A to 17E). The welding lines (13A to 13D) of the left and right web plates (12) are disposed in positions that are different from those of the welding lines (15A, 15B) of the upper flange plate (14) and the welding lines (17A to 17E) of the lower flange plate (16) in a front-rear direction.

Abstract: An arm of a hydraulic excavator is formed as a box-shaped structural body surrounded by left and right side plates, an upper plate joined to each of the upper end sides of each side plate, a lower plate joined to each of the lower end sides of each side plate, and a thick rear plate joined to each of the rear end sides of each side plate and the upper plate. The side plates are formed by joining a rear thick side plate and a front thin side plate. The upper plate is formed by joining two members, that is, a rear thick upper plate and a front thin upper plate, and the lower plate is formed by joining two members, that is, a rear thick lower plate and a front thin lower plate.

Abstract: An arm (11) of a hydraulic excavator (1) is formed as a box-shaped structural body surrounded by left and right side plates (12, 13), an upper plate (14), a lower plate (15), and a thick rear plate (16). An upper end (16A) of the thick rear plate (16) is protruded upward from an outer surface (14A3) of the upper plate (14). Upper ends (22B) of a pair of arm cylinder brackets (22) joined to an outer surface (16C) of the thick rear plate (16) are arranged higher than the outer surface (14A3) of the rear thick upper plate (14A) and lower than the upper end (16A) of the thick rear plate (16). As a result, in each of the arm cylinder brackets (22), a joint area with the thick rear plate (16) can be ensured large, and joint strength can be improved.

Abstract: A boom apparatus comprises a first boom, a second boom, and a monolithc knuckle body. The knuckle body is included in a clevis attaching pivotally the first boom and the second boom.

Abstract: The present disclosure provides a boom structure including an elongated body having a first end and a second end, the first end configured to couple to a dipper and the second end configured to couple to a support structure. The boom structure further includes a top member, a bottom member, and a pair of sides members of the body coupled to the top member and bottom member. Each side member includes a first portion extending between the first end and second end of the body and forming an outer frame structure. Each side member also includes a second portion coupled to an inner surface of the first portion and being substantially enclosed by the first portion.

Abstract: An articulating member of a work machine includes a side plate of an opposed pair of side plates, each side plate of the pair of side plates having a surface facing the other side plate. At least one mount forming a pivot joint is secured to corresponding portions of each facing surface of a side plate of the pair of side plates. A separator plate is positioned between the pair of side plates. A reinforcement member has a peripheral edge collectively secured to one side plate surface, the at least one mount and the separator plate. The reinforcement member forms a continuous compartment spaced from the surface of the side plate, the peripheral edge forms a continuous connection with the one side plate surface, the at least one mount and the separator plate, and the at least one mount is fully secured to the one side plate surface.

Abstract: A boom has a central connection plate attached between a pair of side plates, and a rear portion side of a cover plate on a front boom portion and a front portion side of a cover plate on a rear boom portion are connected thereby. A pivoting support for a working tool cylinder used to move a working tool connected to a foremost portion of the front boom portion is provided on a front side of a top portion on each of the left and right side plates. The central connection plate is formed with a connection plate projection projecting from a front portion attached to the rear portion of the cover plate toward a midway portion so as to approach the pivoting support.

Abstract: A telescopic boom (10) suitable for a material handling vehicle is provided. The boom comprises two telescopic sections. One end (12a) of an inner tube element (12) is telescopically slideable in one end (14a) of an outer tube element (14) so that a majority length of the inner tube element can be received therein. An intermediate element (16) is also provided, a first end (16a) of which resides within, and is slideable in, the outer tube element (14). A second end (16b) of the intermediate element is telescopically slideable in the end (12a) of the inner tube element (12) that resides inside the outer tube element. A first stop (20) serves to limit withdrawal of the first end (16a) of the intermediate element from the outer tube element (14), whilst a second stop (18) serves to limit withdrawal of the second end (16b) of the intermediate element from the inner tube element (12).

Abstract: A lift arm for a skid-steel loader, in which a pair of right and left lift arms 6, 6 are divided in two so that they are constituted as first arm portions 21 and second arm portions 22. Each of the first arm portions 21 is constituted as a long member which is constituted from a sheet metal material and a hollow portion is formed from a proximal end to a front end of the first arm portion. Reinforcing plate-shaped bodies 25A, 25B are fixed on both side faces from a central portion to the front end. Each of the second arm portions 22 is constituted from a plate-shaped body and constituted between a front wheel 3A and a loader main body 2 so as to be inserted loosely. With this structure, it is possible to provide the lift arm which enables an entire length of the skid-steer loader to be shortened.

Abstract: A digging implement (10) including an extendable linkage (12) including a bucket (14) and a thumb assembly (34) for holding materials in the bucket (14). The thumb assembly (34) is configured to rotate as the linkage (12) extends, and both the bucket (14) and the thumb assembly (34) are independently operable.

Abstract: A loading machine and chassis for the same, of small size, with an excavator supplement, which can be used for loading, excavation, drilling, etc. in small spaces which were previously only accessible to persons. The operator sits astride the chassis with lateral support points for the operator's feet. A hydraulic system activates the excavator supplement coupled to a loader arm mechanism. Work tools are coupleable to the excavator supplement or the loading arm mechanism.

Abstract: An attachment connectable to a boom member of a machine for performing work functions generally consisting of a handle pivotally connectable to a boom member of the machine, a ground engageable arm member pivotally connected to the handle and an extendable strut assembly interconnecting the handle and arm member consisting of a hydraulic cylinder assembly having a cylinder member pivotally connected to the handle and a rod member pivotally connected to the arm member, and including means intercommunicating the base and rod ends of the cylinder member, at least one electrically operable valve disposed in the intercommunicating means and operatively connectable to control means disposed on the machine, selectively operable to open the valve and permit the free flow of fluid between the base and rod ends of the cylinder member, and correspondingly the angular displacement of the arm member relative to the handle upon maneuvering the arm member by an operator of the machine, and to close and preclude the free flo

Abstract: A vehicle having a fluid-powered rotary dipper stick assembly including a boom attachment head and a bucket attachment head with a body extending therebetween. An axle extends from the boom attachment head into the body and is in sliding engagement with an inward wall of the body to provide lateral support thereto. The axle extends to a midportion of the body. The body is rotatable relative to the axle, and is rigidly connected to the bucket attachment head for rotation together as a unit. A linear-to-rotary transmission mechanism including a piston is disposed within the body and is operable to produce rotational movement of the body relative to the non-rotating axle. The piston is operated by the application of pressurized fluid to produce linear movement of the piston which is translated into rotational movement of the body, and provides rotation of a bucket or other work implement attached thereto about the body longitudinal axis independent of the boom attachment head.

Abstract: A vehicle having a fluid-powered rotary dipper stick assembly including a boom attachment head and a bucket attachment head with a body extending therebetween. An axle extends from the boom attachment head into the body and is in sliding engagement with an inward wall of the body to provide lateral support thereto. The axle extends to a midportion of the body. The body is rotatable relative to the axle, and is rigidly connected to the bucket attachment head for rotation together as a unit. A hydraulic motor is operable to produce rotational movement of the body relative to the non-rotating axle. Rotational movement of the body produces rotation of a bucket or other work implement attached thereto about the body longitudinal axis independent of the boom attachment head. The assembly uses a single thrust bearing positioned between the body and the boom attachment head to carry thrust loads in both directions.

Abstract: In a front-end loader, a lift arm structure including a pair of lift arms which are rigidly joined by an improved cross-piece assembly. The cross-piece assembly includes first and second members which are configured to transversely extend one within the other between the lift arms. Along their lengths, the first and second members are separated from each other such that each is permitted to distort and absorb stress. The end portions of the first member are welded to an outside surface of the respective lift arms which the end portions of the second member are welded to an inside surface of the respective lift arms.

Abstract: A vehicle having a fluid-powered rotary dipper stick assembly including a boom attachment head and a bucket attachment head with an outer body extending therebetween. A shaft extends longitudinally within the outer body. An inner body is disposed within the outer body immediately inward of the outer body to provide support thereto. In one embodiment, the inner body is rigidly attached to the shaft for rotation as a unit relative to the outer body. In another embodiment, the outer body and the shaft are rigidly attached together for rotation as a unit relative to the inner body. A linear-to-rotary transmission mechanism including a piston sleeve is disposed within the inner and outer bodies and is operable to produce rotational movement of the shaft relative to whichever of the outer or inner bodies is not connected to the shaft.

Abstract: A vehicle having a fluid-powered rotary dipper stick assembly including a boom attachment head and a bucket attachment head with an outer body extending therebetween. A shaft extends longitudinally within the outer body. An inner body is disposed within the outer body immediately inward of the outer body to provide support thereto. In one embodiment, the inner body is rigidly attached to the shaft for rotation as a unit relative to the outer body. In another embodiment, the outer body and the shaft are rigidly attached together for rotation as a unit relative to the inner body. A linear-to-rotary transmission mechanism including a piston sleeve is disposed within the inner and outer bodies and is operable to produce rotational movement of the shaft relative to whichever of the outer or inner bodies is not connected to the shaft.

Abstract: An improved pipe-moving apparatus is disclosed having a pipe-insertable elongate member which is articulated for ease of use, particularly for pipe laying near trench ends. In a preferred form, the elongate member has a series of at least two carrier members pivotably interconnected end-to-end, with the proximal end of such series of carrier members attached to the controlling mechanism, and structure supporting the carrier members in alignment when the carrier member series is suspended by its proximal end. A highly preferred embodiment accommodates the removable insertion of one or more additional carrier members in the series to extend the length of the elongate member.

Abstract: There is disclosed a power loader lift arm cross tube stabilizing structure. A pair of loader lift arms are interconnected by a double torque tube stabilizing member which serves to distribute twisting forces encountered by one loader arm more evenly to that loader arm structure, as well as through the cross tube and to the other loader arm structure. The cross tube structure is comprised of two tubes, one positioned within the other, the outside tube being welded to each vertical side of each side of each lift arm member, while the inside tube is welded at its outer ends to the inner surface of the outer tube.

Abstract: An extension arm assembly for mounting on the forward ends of the boom arms of a tractor loader is described which enables the effective length of the boom arms to be extended thereby enabling the tractor loader to raise materials to a height greater than that otherwise possible. The extension arm assembly may be quickly and easily mounted on the forward ends of the boom arms without modification thereof.

Abstract: An assembly capable of being fitted to a loader which is provided with an attachment device intended, for example, for co-operation with respective one ends of two lifting arms whose respective other ends are intended to support suitable load-handling devices, such as forks, buckets etc., and lifting-ram attachments intended, for example, to co-operate with respective first ends of two lifting rams whose respective other ends are capable of co-operating with the lifting arms. The assembly is provided at the central region thereof with a device for co-operating with the attachment device, and is provided in the upper part thereof with a pivotal attachment for pivotal co-operation with a part of a load-handling arrangement. The lower part of the assembly is arranged to extend towards the front wheels of the loader, and the lower part of the assembly is firmly connected to the lifting-ram attachments originally found on the loader.

Abstract: Earthmoving vehicles are often provided with a linkage arrangement on one end that is utilized to manipulate a work implement, such as a loader bucket. The linkage typically includes a tilting arrangment for the bucket that incorporates a tilt lever that is mounted to a lift arm that supports the bucket. The mounting between the tilt lever and the lift arm is normally of a complex nature requiring multiple bearing surfaces and lubrication means. Others may have a structure that requires exact positioning between the relative components or a failure will occur due to improper loading. The linkage arrangement of the present invention provides a mounting member that is attached to only one of the tilt levers. It also includes an axial motion limiter that is attached to the other tilt lever. In doing so, a very simple and economical mounting device is provided. The mounting device also allows the tilt levers to rotate with respect to each other so that each of the levers function to bear a portion of the loading.

Abstract: A loader vehicle boom arm assembly incorporates a pair of box section boom arms in which the top plate of each box section boom arm has a cross sectional shape such that the upper surface is provided with an arcuate surface that directs foreign objects encountering the arcuate top surface off the boom arm.

Abstract: An extendable utility boom assembly for assisting fire-fighting operations performed from a semi-submersible service vessel upon an offshore platform is disclosed. The boom assembly is moved to operating position by means of a carriage assembly which is mounted for movement along a track secured to the deck of the service vessel. Orientation of the boom assembly in azimuth and pitch is provided by a supporting frame which is pivotally mounted on the carriage assembly for angular movement through a horizontal plane, and a trunnion which is pivotally mounted on the supporting frame for angular movement through a vertical plane. An elongated utility boom is supported by roller bearing elements for axial movement through the trunnion. A first linear actuator is interconnected between the carriage assembly and supporting frame for displacing the supporting frame through the horizontal plane.

Abstract: A crowd drive assembly for a power shovel is described. The power shovel includes a main frame, a boom connected at the lower end thereof to the main frame, a dipper handle pivotally connected to the boom and a dipper connected to the dipper handle. A rack and pinion crowd drive arrangement is provided wherein a yoke is mounted within an opening in the boom for receiving and guiding the dipper handle as it is extended and retracted by the crowd drive. A shipper shaft is journaled in the boom and extends through trunnions therein. The yoke is pivotally mounted, coaxially with the shipper shaft directly on the trunnions which are an integral part of the boom so that loads experienced by the yoke are transmitted directly to the boom and not to the shipper shaft. A removable bearing housing arrangement supports the yoke on the trunnions.

Abstract: The invention relates to a power arm comprising four faces, two of which being constituted by plates, which arm is mounted for pivotment about an axis and with respect to a structure, and is fitted with the coupling lug of a jack comprising a pivoting axis of said jack and its support, permitting a deflection of said jack which is parallel to the deflection of the arm, said support being constituted by extended portions of the plates.The arm comprises a cross piece of which the length 1 is substantially equal to the spacing between the said extended portions and which is situated between the said extended portions, and transversed by the axis, a threaded end of which cooperates with a nut to hold the cross piece in position between the said extended portions.An application is found in the production of a shovel boom.

Abstract: An extendable utility boom assembly for assisting fire-fighting operations performed from a semi-submersible service vessel upon an offshore platform is disclosed. The boom assembly is moved to operating position by means of a carriage assembly which is mounted for movement along a track secured to the deck of the service vessel. Orientation of the boom assembly in azimuth and pitch is provided by a supporting frame which is pivotally mounted on the carriage assembly for angular movement through a horizontal plane, and a boom housing which is pivotally mounted on the supporting frame for angular movement through a vertical plane. An elongated utility boom is supported by roller bearing elements for axial movement through the boom housing. A first linear actuator is interconnected between the carriage assembly and supporting frame for displacing the supporting frame through the horizontal plane.

Abstract: A boom arm of a boom assembly is formed of a pair of side walls integrated into a box boom structure where the top and bottom plates are roll formed with transition edges providing a weld bed for welds attaching the side walls to the top and bottom plates. The particular cross sections of the top and bottom plates provide a weld blow-through preventing barrier and also dimensional guidance and tolerance control during assembly of the boom arm.

Abstract: A lifting machine boom having two side walls maintained in spaced relationship to each other by a bottom wall and a top wall and a median reinforcing member dividing the interior of the boom into the first and second longitudinally extending chambers. One or more rigid pipes are attached to the median wall and run longitudinally of the boom from locations adjacent the ends. These pipes conduct pressurized fluid to and from one or more actuators carried by or associated with the boom. One said actuator is disposed in the second chamber.

Abstract: A shovel linkage for a hydraulic excavator includes boom rails having pivot means in one end for pivotal connection to an excavator and cross tubes extending between the rails near the pivot means and having pivot joints provided thereon for connection of actuating cylinders for the linkage in line with the cross tube and close to the pivot means whereby forces imparted to the linkage by the actuating cylinders will be directly through the center of the cross tube and very near the boom rail pivot means, minimizing bending moments in the linkage.The pivot joint includes a flat tab member provided on the cross tube and projecting outwardly along a diameter thereof, and a pin and ball connecting the bifurcated end of a hydraulic cylinder to the tab for limited rotation thereof. The pin is disposed substantially normal to the plane of the boom rails for unimpeded insertion and removal thereof.

Abstract: A shovel linkage for a hydraulic excavator or the like has spaced parallel boom link rails which are coplanar with associated spaced parallel stick link rails and pivotedly connected thereto by means of pivot joints provided on the ends thereof.Bucket stops are provided on a bucket attached to the stick and are arranged to contact the centers of the stick rails for greater strength.

Abstract: A low-profile front end loader vehicle has the bucket located as close to the front wheels as is possible without sacrificing strength and maneuverability. The lift arms are shortened and reshaped in the midportion to lower the low position of the lift arms. An irregularly shaped reinforced tubular crossbrace is provided and has end plates which coact not only with external plates on each arm for attachment of the lift cylinders to said arms, but also coact with brackets carried by said crossbrace to support the tilt arms thereon. The respective plates strengthen the lift arms and the reinforced crossbrace has internal stiffness that resists torsion and bending to provide an improved compact lift structure.

Abstract: A boom assembly for a loader that is pivotally mounted on a tractor. The assembly includes a pair of boom arms which are pivotally connected at one end of the tractor. The arms are fabricated from two C-channels which are welded together. The arms have aligned inside apertures sized to accept a tube which is rigidly connected to both channels. The assembly is completed when a cross tie member envelopes the tubes and is rigidly secured to the inner C-channels.

Abstract: A shovel linkage for a hydraulic excavator includes a cross tube having pivot joints, and actuating cylinders for the linkage connected to said pivot joints thereon whereby forces imparted to the linkage by the actuating cylinders will be directly through the center of the cross tube, avoiding bending moments in the linkage.The cross tube has an internal diametrical member in line with the pivot joints and the actuating cylinders to withstand and transmit the forces imparted by the actuating cylinders.

Abstract: A reverse linkage loader bucket arm with an enclosed cylinder assembly and wherein a loader bucket is pivotally mounted on the arm and the cylinder assembly induces the pivotal action. The lift or support arm for the bucket is hollow along its longitudinal axis and the cylinder assembly is mounted within the hollow arm and projects through an open end thereof to pivotally connect with the bucket and the point of pivotal connection is to the side of the pivotal connection of the arm in the bucket away from the bucket. The cylinder fluid lines are also disposed within the hollow boom or lift arm, and thus the cylinder assembly and the lines or hoses are enclosed and thereby protected and arranged for reverse linkage connection relative to the arm and the bucket.