A work stopping apparatus according to this invention includes a swing unit pivotable about a first pivot shaft between an abutment position and a retracted position, and a driving unit pivoting the swing unit. The swing unit includes a swing portion and a movable portion including a work abutment portion. The movable portion is pivotable about a second pivot shaft parallel to the first pivot shaft. A distance between the first pivot shaft and the work abutment portion becomes short along with pivoting motion of the swing unit from the abutment position to the retracted position.

A rotary lamination apparatus has a rotary lamination turntable rotational about a vertical axis. A plurality of workpieces are rotated and laminated on the turntable. The turntable includes a support member that is arranged on an upper surface of the turntable, a plurality of rolling bodies mounted on the upper surface of the turntable, and a plurality of urging members for urging the rolling bodies upward. The support member is formed of material having a high friction coefficient. The rolling bodies are selectively movable between an upper position and a lower position. In the upper position, at least a portion of each of the rolling bodies is located above the upper surface of the support member. In the lower position, each rolling body is located below the upper surface of the support member. In the upper position, the rolling bodies support the workpieces movably in a lateral direction.

A system and method for changing a flow rate and direction of dry bulk material supplied from an elevated source, via an angled spout to an adjustable spout end having no internal baffles therein and having readily interchangeable wear pads therein which are accessible through an access door.

A rebuildable conveyor roller includes a hollow, cylindrical roller tube having a first end opposite a second end. The roller tube has a rebuildable conveyor roller bearing assembly provided at the first end and the second end. The rebuildable conveyor roller bearing assembly is affixed to the roller tube such that at least a part of the rebuildable conveyor roller bearing assembly is removable from the roller tube. A hub of the rebuildable conveyor roller bearing assembly has a generally circular shape that is dimensioned to fit inside the internal diameter of the roller tube. The hub has a centrally located hole through which a stub shaft may be inserted. A bearing holder is inserted in an internal cavity provided within the hub for securing the rebuildable conveyor roller bearing assembly to the roller tube.

An apparatus includes a processing apparatus that processes raw material in an airtight state, an accommodation section that accommodates the raw material, a first feeding path that is provided outside the processing apparatus and receives the raw material from the accommodation section, and a second feeding path having upstream and downstream ends that are outside and inside the processing apparatus, respectively. The second feeding path receives the raw material from the first feeding path. The apparatus also includes a joint section that separates and joins the first path and the second path, and a closing section that is positioned in the second path closer to the processing apparatus than the joint section and maintains the processing apparatus, and the second path in an airtight state when the joint section separates the first path and the second path.

A roller rail system includes an adjustment bracket including a first roller rail assembly support portion and a second roller rail assembly support portion adjacent the first roller rail assembly support portion. The first and second roller rail assembly support portions are each configured to receive a roller rail assembly such that the roller rail assembly slides within the respective first and second roller rail assembly support portion relative to the adjustment bracket. A first roller rail assembly is received by the first roller rail assembly support portion. A second roller rail assembly is received by the second roller rail assembly support portion. The roller rail system has a retracted configuration where leading ends of the first and second roller rail assemblies are closer together and an extended configuration where the leading ends of the first and second roller rail assemblies are further apart.

A belt moving unit includes an endless belt member and plural support rolls supporting the belt member movably and rotating, wherein the support rolls include one or more follower rolls rotating to follow the movement of the belt member and at least one of the follower rolls is used as an inertial roll to which inertia is applied, wherein the inertial roll includes a rotation shaft, a rotational inertial member rotating with the rotation shaft and applying inertia, and a roll body disposed along a peripheral surface of the rotation shaft and including plural roll-divided members, and wherein the plural roll-divided members include a fixed divided member fixed to the rotation shaft and rotating along with the rotation shaft to follow the movement of the belt member and a rotating divided member rotating independently of the rotation of the rotation shaft.

A ramp may include a frame having first and second end portions and at least one rung extending substantially between the frame and being positioned between the first and second end portions, the at least one rung forming at least a portion of a ramp surface. The ramp may further include a plate extending substantially between the frame and being positioned adjacent to at least one of the first and second end portions, and a lip pivotally attached to the plate at a pivot axis, wherein the pivot axis is non-load bearing.

An apparatus for counting deposit beverage containers that includes a loading basin for holding a plurality of deposit beverage containers, a feed chute for receiving the containers from the loading basin having an inlet end narrowing into at least one outlet end, and at least one feed channel extending from each outlet end. The feed channel includes a choke opening that orders the containers into a single file row, an upward bend following the choke opening that decreases the downward slope of the feed channel to moderate the flow of the containers, and a downward curve following the upward bend that accelerates each container to create separation between containers.

A wear indicator apparatus, system and method are provided for allowing wear information from an internal flow surface of a chute to be obtained from outside the chute so as not to require access to the interior thereof for wear inspection purposes. In one form, the wear indicator apparatus has a wear indicator portion that is configured to be fit into a through opening in the chute wall assembly. The wear indicator portion has a layer of wear material that is of the same material as an inner liner of the chute wall assembly, and a mounting portion that is configured to be removably fixed to an exterior surface of the wall assembly. Preferably, the wear indicator apparatus includes a removal mechanism connected to the mounting portion that is operated outside of the chute for retracting the wear indicator portion out from the wall assembly through opening.

A coin dispensing apparatus has a cabinet serving as an apparatus housing for the apparatus. The apparatus further has a module for receiving, optionally validating and optionally sorting coins of different types and at least one dispenser for coins to be dispensed. The apparatus is adapted to dispense a specific composition of coins from the at least one dispenser to a portable coin receptacle. Each dispenser comprises a spout and is shaped such that a plurality of dispensers can be placed in a pattern allowing the spouts to be placed in a row. An effect of this is that the sorted coins can be dispensed in a row above the row of spouts, thus there is no need for an additional complex channel system for leading the sorted coins into the correct dispenser.

A vertical conveying channel is made of elastic fabric. The elastic fabric's latitude elastic deformation rate is 100˜450%, latitude resilience is 300˜2500N, and latitude elastic recovery rate is 70˜100%; preferably, the latitude elastic deformation rate is 120˜400%, the latitude resilience is 350˜2300N, and the latitude elastic recovery rate is 75˜98%; more preferably, the latitude elastic deformation rate is 140˜350%, the latitude resilience is 550˜2200N, and the latitude elastic recovery rate is 80˜96%; most preferably, the latitude elastic deformation rate is 170˜300%, the latitude resilience is 750˜2000N, and the latitude elastic recovery rate is 85˜94%. The vertical conveying channel can be used for vertical conveying of cargo or personnel, preferably used in the field of lifesaving, engineering or military.

A method for disassembling a low-pressure process apparatus. The method provide a transmission device and a low-pressure process apparatus; and moves the housing to a transmission device in a first horizontal direction via the first roller set.

A method of manufacturing a valve for an internal combustion engine, comprises: (i) a primary step of forging a bulging portion at one end of a rod material to form a generally disk-shape valve head of the valve having a tapered periphery; (ii) an thickness adjustment step of machining an excessively thick portion of the valve head; and (iii) a secondary step of forging a peripheral region of the valve head to create radial slip deformations therein to form a valve face of the valve head. In the step of thickness adjustment, only the front end of the disk-shape valve head is machined without harming dense grain flow lines induced in the tapered face (16a) in the primary forging while advantageously saving the valve material and reducing thickness adjustment time. In the secondary forging, the hardness of the valve face is further enhanced.

The current invention provides a tube-grasping body for grasping an insert tube in a heat exchanger, and heat exchanger production methods and apparatuses utilizing the tube-grasping body, wherein the tube-grasping body enables to enlarge and connect an insert tube to a heat radiating fin for producing a heat exchanger, still keeping the total length of insert tubes at an almost same level even after the enlargement; and the tube-grasping body is connected at its exterior to the guide-pipe.

Provided herein are compositions comprising at least one estolide compound of formula: in which n is an integer equal to or greater than 0; m is an integer equal to or greater than 1; R1, independently for each occurrence, is selected from optionally substituted alkyl that is saturated or unsaturated, and branched or unbranched; R2 is selected from hydrogen and optionally substituted alkyl that is saturated or unsaturated, and branched or unbranched; and R3 and R4, independently for each occurrence, are selected from optionally substituted alkyl that is saturated or unsaturated, and branched or unbranched. Also provided are uses of the compositions described herein.

Rolling mill bearings incorporate bearing bushings with pluralities of hydrostatic pad recesses, that are preferably in conjunction hydrodynamic bearings also formed within the bushing. Each recess has an isolated lubricant passage that is adapted for coupling to a separate isolated source of pressurized lubricant. In some embodiments herein, the isolated pressurized lubricant source is supplied by a dedicated outlet of a pressure pump. In this manner each hydrostatic pad recess has a dedicated pressurized lubricant supply that is not interrupted by loss of lubricant pressure events in other bearing pads or elsewhere within the rolling mill lubrication system.

A housing member for a friction clutch and a method for making it. The housing member is made for use with two differently sized fan members. Two annular raised mounting pilot surfaces are provided, one of which is machine finished for mounting one of the two fan members. Two sets of fan member mounting holes are also provided, one set of which is used to mount one of the two fan members thereon.

Methods and apparatus to monitor conditioning machines are disclosed herein. An example system includes a plurality of work rolls to process a strip material. A first sensor detects a first distance between an upper surface of the strip material and a first reference location and a second sensor detects a second distance between an upper surface of the strip material and a second reference location. A controller determines a difference value between the first distance and the second distance to detect material curvature of the strip material.

A method for forming a piece of a sheet metal is performed by positioning a consumable body, made of metal, proximate to the piece of the sheet metal. The consumable body is rapidly vaporized, and the gas pressure generated thereby is directed into the piece of the sheet metal. This results in acceleration of the piece of sheet metal, and it is collided into a stationary body at a velocity, generally in excess of 200 m/s. Depending upon the type of stationary body, the piece of sheet metal is deformed into a predetermined shape or is welded onto the stationary body. The vaporization is accomplished by passing a high current of electricity into the consumable body. The effect of the vaporized metal may be augmented by additional components in the consumable body.

A hydroforming method for metal produces hardware having a throat in only one side and having approximately right-angled corners without causing thinning and breakage. The method includes using a working fluid to exert a liquid pressure on a metal embryo and cooperating with a push rod of a hydroforming mold to supply material from the lower edge, forcing the side sheet metals to bulge. Furthermore, by using the hydroforming mold to provide a downwardly pressing active force on the metal embryo, under feeding of the downwardly pressing active force cooperating with continuous liquid pressure, the metal embryo deforms and bulges such that each corner of the metal embryo and the wall corners of the die cavity of the hydroforming mold have approximately the same angles. Hardware, every angle of which approximates a right angle, can be obtained after removing the hydroforming mold. This method can also be used to obtain a metal box.

A luminous character enclosing machine has an upper supporting plate (2) and a lower supporting plate (3) which are installed on a machine frame (1). A plate inlet and a plate outlet are formed respectively on two ends of the upper and lower supporting plates. A feeding unit, a grooving unit, an arc-curving unit, and a plate-clamping unit arranged between the two supporting plates are provided in succession from the plate inlet to the plate outlet. A grooving driving device is installed on the machine frame, and drives the grooving device to move up and down. This kind of grooving mode is a cold processing mode, heat generation during working which makes color of the stainless steel plates change is avoided, and a phenomenon of knife broken due to high speed rotation of a saw blade and the hardness of the stainless steel is prevented. The machine is simple in structure and convenient to operate.

An oil hole penetrating through a partition wall of a pulley cover of a continuously variable transmission is formed in a direction perpendicular to an axis of the pulley cover. The pulley cover, having first and second hydraulic oil chambers through which a movable pulley half of a pulley of the continuously variable transmission is biased toward a fixed pulley half thereof, is manufactured in the step of machining a metal sheet. The manufacturing step includes a first step of press-forming the annular partition wall of the pulley cover, a second step of opening the oil hole in the partition wall, the oil hole allowing communication between the first and second hydraulic oil chambers, and a third step of press-forming the peripheral wall of the second hydraulic oil chamber at an outer side, in a radial direction, of the partition wall.

A pressing and stripping apparatus for punch die includes a base, a pressing and striping plate, an A-type pillar, a first bolt, an elastic or pressure element, a stripping bolt, a second bolt, a die-mounting bolt, a B-type pillar, a locating pin, a cylindrical guide column, a third bolt, an outer supporting frame, and a square guide column; wherein the pressing and stripping plate is movably connected to the base via the stripping bolt, wherein the pressing and stripping plate reciprocates along the axial direction of the stripping bolt while working, and the elastic or pressure element is provided between the pressing and stripping plate and the base. The push rod used with the pressing and stripping apparatus for the punch die is a column, one end thereof is a polygonal blind hole, and the other end thereof is a stepped shaft with parallel threads. This arrangement can achieve a common pressing and stripping apparatus, making the punch die easy to be disassembled.

A machine tool (1) for processing a workpiece (2) by relative movement of a tool (18) with respect to the workpiece (2), including a homogenizer (15) into which water and oil are taken to disperse oil homogeneously in water, a working fluid produced in homogenizer (15) being supplied to a work area for processing of the workpiece.

In order to provide a steel sheet for hot pressing from which a hot-pressed part excellent in perforation corrosion resistance is obtainable and a method of manufacturing a hot-pressed part using the steel sheet for hot pressing, provided is a steel sheet for hot pressing having, sequentially on a surface of a base steel sheet: a plating layer I containing 60% by mass or more of Ni and the remainder consisting of Zn and inevitable impurities, a coating mass thereof being 0.01 to 5 g/m2; and a plating layer II containing 10 to 25% by mass of Ni and the remainder consisting of Zn and inevitable impurities, a coating mass thereof being 10 to 90 g/m2.

An apparatus for shot peening blade mounting areas on a disc of a rotor includes a peening nozzle unit which streams shot peening media along a longitudinal axis. The unit includes a nozzle outlet which extends at least partially in a circumferential direction of the unit, and a deflection arrangement with a deflection area for the media. The deflection area is at least partially cone or half-hyperboloid shaped, such that the media passes the nozzle outlet over an angle range in circumferential direction after being deflected by the deflection arrangement. A method for shot peening the blade mounting areas positions the unit in a slot profile of a blade mounting area, and guides the unit along the contour of the slot profile with the nozzle outlet facing the contour of the slot profile to approximately uniformly peen the contour of the slot profile.

An apparatus and method are described for automatically inserting angle plates into duct work and for seaming the duct work.

A green ball grinding method includes the step of supplying a green ball between a first surface of a first member and a second surface of a second member constituting a grinding apparatus, and the step of grinding the green ball between the first surface and the second surface while the green ball rotates around its own axis and in orbital motion. In the step of grinding the green ball, the step of causing the green ball grinding to proceed while applying load between the green ball and each of the first surface and the second surface, and the step of modifying the rotation axis of the green ball by reducing the load lower than in the step of causing the green ball grinding to proceed are executed alternately.

[Problem] To present a manufacturing apparatus of a plate-like tooth profile member capable of forging and forming in one process by using a closed type die, being hardly accompanied by burrs due to plastic changes in the circumferential direction and in the axial direction of the material of the plate-like tooth profile member. [Solving Means] Consisting of an upper die 1 and a lower die 2 of closed type, the lower die 2 is composed of a tooth die 21 for forming a tooth portion in a material W of a plate-like tooth profile member, and movable dies 22, 22 movable relatively in a vertical direction to the tooth die 21 disposed at both sides in the axial direction of the material W of the plate-like tooth profile member of the tooth die 21, a first stroke is executed for confining the circumference at both end portions in the axial direction of the material W of the plate-like tooth profile member by the upper die 1 and the movable dies 22, 22, and a second stroke is executed for forming a tooth portion in the material W of the plate-like tooth profile member by the upper die 1 and the tooth die 21.

The invention relates to a cluster arm arrangement for the intermediate roll sets of 18 HS roll stands, wherein arranged between the chock at the operating side and the chock at the drive side are cluster arms which are pivotable laterally of the intermediate roll and in which the lateral backing rolls are integrated for support of the working rolls in the stand. In that case, arranged between the chock (1) and the cluster arm (2) is a pivot pin (3), which is fixedly connected with the cluster arm and about the axis of which the cluster arm (2) is pivotable, and a locking means for the cluster arm (2) as well as an abutment (6) with a restoring spring (6) are operatively arranged on the pivot pin (3) as a compact unit in the region between the cluster arm (2) and chock (1).

The invention resides in a hydraulic cylinder (23) for a hydraulic drawing cushion (20) of a drawing press (10). The hydraulic cylinder (23) includes a first operating chamber (47), a second operating chamber (48), and a third operating chamber (53). An annular piston (45) with a first piston surface area (49) and a second piston surface area (50) separates the first operating chamber (47) from the second operating chamber (48). The first and the second piston surfaces (49, 50) have the same size. A front surface of the piston rod (33) forms a third piston surface (54) which is larger than the first and second piston surfaces. The third piston surface (54) delimits the third operating chamber (53) of the hydraulic cylinder (23). The first and the second operating chambers (47, 48) are provided for controlling the position and/or the movement of the piston rod (33). The third operating chamber (53) serves to control the metal sheet clamping force of the drawing press via the piston rod (33).

Using a method for producing a spring from a spring wire, turns of a first spring part are produced, wherein said produced turns move in a first direction. Thereafter, turns of a second spring part are produced, wherein said produced turns move in a second direction which is different from, in particular opposite of, the first direction. Such a method can be used to produce a spring having a plurality of spring parts.

A double rustproof PC strand has superior durability and semi-permanent rustproof performance. A core wire and surrounding wires are formed of wires subjected to a wire drawing treatment and a plating treatment to be formed with a plated layer. A rustproof treatment is applied by forming a synthetic resin coat on an outer peripheral surface thereof. In order to uniformize and regulate the twisting pitch, the core wire and the surrounding wires are adjusted under the conditions of: (A) Diameter of CORE: 4.42±0.05 mm, Diameter of Surrounding wire: 4.25±0.05 mm,(B) Diameter of CORE: 5.22±0.05 mm, Diameter of Surrounding wire: 5.06±0.05 mm, or(C) Diameter of CORE: 5.40±0.05 mm, Diameter of Surrounding wire: 5.25±0.05 mm, and then twisted, andthe tensile strength is 1850 N/mm2 or higher.

The present invention provides apparatus and methods for growing fullerene nanotube forests, and forming nanotube films, threads and composite structures therefrom. In some embodiments, an interior-flow substrate includes a porous surface and one or more interior passages that provide reactant gas to an interior portion of a densely packed nanotube forest as it is growing. In some embodiments, a continuous-growth furnace is provided that includes an access port for removing nanotube forests without cooling the furnace substantially. In other embodiments, a nanotube film can be pulled from the nanotube forest without removing the forest from the furnace. A nanotube film loom is described. An apparatus for building layers of nanotube films on a continuous web is described.

An apparatus for producing a textile product generally includes a feeding section for providing a starting material to facilitate producing a textile product derived from the starting material; a drafting section operably coupled to the feeding section for gripping, pulling, stretching and breaking at least one strand of the starting material into at least one continuous and cohesive network of an intermediate product; and a spinning section operably coupled to the drafting section for winding and twisting the at least one continuous and cohesive network of an intermediate product onto a removable receiving member to form the textile product; the feeding section, the drafting section, and the spinning section are configured to form the textile product in a continuous operation.

A cable-stranding apparatus includes a stationary guide, a motor, a driven guide, and a controller electrically coupled to the motor. The stationary guide is configured to guide strand elements in a spaced-apart configuration and to pass a core member. The motor is operatively associated with a guide driver. The driven guide is disposed at least partially within the guide driver so as to rotate therewith. The driven guide is configured to receive the strand elements from the stationary guide, individually guide the strand elements received from the stationary guide, and to further pass the core member. The controller is electrically coupled to the motor and configured to control the rotational speed and direction of the motor.

Rope (4) having an eye (2). The rope (4) comprises a first rope portion (8) and a second rope portion (10). The first rope portion (8) and the second rope portion (10) are spliced into each other for forming a spliced connection for obtaining the eye (2). The first rope portion (8) and the second rope portion (10) are formed from an end portion of the rope (4).

A yarn-producing apparatus for an air spinning machine, which is used for producing a yarn from a fiber strand with the assistance of an air flow, has a spinning tip with an inlet opening surrounded by the outer surface of the spinning tip, in the area of which a yarn is able to be produced with the assistance of the air flow. The yarn-producing apparatus has an internal inset with a draw-off conduit adjacent to the inlet opening for the yarn and several air outlets branching off on the side from the draw-off conduit, such that an air flow introduced counter to the direction of spinning (S) in the draw-off conduit can escape in part through the air outlets and in part through the inlet opening. In addition, a spinning unit with a corresponding yarn-producing apparatus is provided.

A steel cord for reinforcement of rubber articles, whose cord strength is enhanced by preventing occurrence of preceding break of the outermost layer filaments in the steel cord having a multi-twisted structure, and a pneumatic tire using it as a reinforcing material are provided. In a steel cord for reinforcement of rubber articles having a multi-twisted structure in which a plurality of strands are twisted together, which strands have a layered twisted structure in which a plurality of steel filaments are twisted together, dc/ds, which represents the ratio between dc, the diameter of outermost layer sheath filaments constituting the outermost layer sheath of a core strand, and ds, the diameter of outermost layer sheath filaments constituting the outermost layer sheath of sheath strands, is 1.05 to 1.25.

A rope assembly that is adapted to extend between first and second attachment points comprises a line arranged to define a plurality of loops and at least one pair of organizers. The at least one pair of organizers is configured to engage the line such that line segments of the line between the at least one pair of organizers are maintained in a desired relationship with each other and such that the desired relationship facilitates transfer of loads through the rope assembly between the first and second attachment points.

A fid apparatus includes a first channel formed along one side of the fid and a second channel formed along an opposite side of the fid. The fid further includes an aperture that passes completely through both the first channel and the second channel. This arrangement enables the fid to be able to grasp or clutch a segment of rope during a splicing process. The splicing process involves a method of using the fid apparatus in such a way that the segment of rope is arranged within the first channel, second channel, and aperture of the fid prior to commencing splicing processes. The segment of rope used is determined by the particular form of splicing that is implemented.

An excavation system employing a high-pressure pulsed air jet that may optionally be used in combination with a low-pressure high velocity blower for excavating improvised explosive devices or other buried objects. The excavation system may also be employed to operate a pneumatic tool such as a cut-off tool or a chisel. The high velocity blower may incorporate a bifurcated fan duct having two air outlets. The system may include a pressure control module for regulating the from a high-pressure air source to an evacuation valve. The evacuation valve employs first and second valves where the second valve controls the operation of the first valve.

Disclosed is a work vehicle having a hydraulic apparatus which can reliably prevent erroneous operation of the valve of the hydraulic apparatus even when the operating lever is moved inadvertently. With this hydraulic apparatus, with operations of a single operating lever in two directions, two valves are operated respectively. Two valve operating links for operating the two valves respectively are pivotally supported to a support shaft provided to a pair of frame plates and a lock pin is provided to the frame plates. The two valve operating links form pin holes. When the two valves are at the neutral positions, the lock pin is inserted into the pin holes with a locking operation of a lock operating tool, thus fixing the valve operating links and locking the valves.

An improved apparatus for removing snow and ice from the roof top of a truck, trailer, bus or similar vehicle is mounted atop a conventional flatbed trailer for ease of relocation from one site to another for use. The addition of a height adjustable scraper or plow blade that is operator controlled to remain in contact with the roof of the vehicle being cleaned is provided with a self-contained front-to-back and side-to-side stabilization mechanism to prevent damage to the tops of vehicles by gouging or tearing the roof top.

A mining shovel includes a boom and a transmission unit coupled to the boom. The transmission unit includes an outer housing, an internal motor housing disposed within the outer housing, and a venting system coupled to the outer housing to direct air through both the outer housing and the internal motor housing.

Disclosed is a position control apparatus for a working machine of a construction machinery, including: a boom driving unit for driving a boom; a bucket driving unit for driving a bucket; a working tool manipulating part for generating a manipulation signal for driving the boom driving unit and the bucket driving unit; a kick-down switch for generating a kick-down signal for lowering a gear stage; and a controller for, if the kick-down signal is generated by the kick-down switch and the manipulation signal is generated by the working tool manipulating part, outputting a control signal to the boom driving unit and the bucket driving unit to move the boom and the bucket to a preset position.

An adjustable blade rake includes a mounting plate configured to mount to a machine. A backup plate is coupled to the mounting plate and includes a plurality of slots. A moldboard is attached to the backup plate. A plurality of tines are slidably located in the plurality of slots adjacent the rear side of the moldboard. A crossbar couples the plurality of tines together and a lifting device is operatively coupled to the plurality of tines and is configured to slide the plurality of tines in the plurality of slots.

A method puts into operation a clearing apparatus suitable for picking up ballast and is disposed in an endless configuration during employment so as to encircle a railroad track. The clearing apparatus has a horizontal cross-duct which, prior to a start of the employment, is intended to be positioned below the railroad track and connected, on the one hand, to a rising duct and, on the other hand, to a return duct of the clearing apparatus. The method includes displacing ties of the railroad track in a longitudinal direction of the railroad track to create a tie gap; lowering the cross-duct through the tie gap between two rails of the railroad track and transferred, below the ties, into a working position extending crosswise to the longitudinal direction of the railroad track; and connecting the cross-duct to the rising duct and to the return duct.

A rolled latch for excavator buckets that increases duration and facilitates maintenance work since it is changed instead of requiring weld fill, and includes three primary parts: a core, a top wear plate and a bottom wear plate. The parts are manufactured of rolled steel. The core remains between the top and bottom wear plates, and the top and bottom wear plates are welded to the core.