摘要:
A stepless speed change mechanism in a belt transmission device comprising a first belt passed through a groove in a drive pulley and a first groove in an intermediate pulley, and a second belt passed through a second groove in the intermediate pulley and a groove in a driven pulley for transmitting rotation from the drive pulley to the driven pulley via the intermediate pulley. The first groove and the second groove of the intermediate pulley have an axial width gradually decreasing radially inwardly of the pulley. A partition provided between and defining the first and second grooves of the intermediate pulley is movable axially of the pulley to thereby vary the pitch diameter of each of the first and second grooves and steplessly change the speed of rotation to be transmitted from the drive pulley to the driven pulley. The state of contact of the first belt with the first groove portion is adjusted to be different from the state of contact of the second belt with the second groove portion so that when the partition moves axially for the speed change, the axial component of the pushing force exerted on the partition by one of the first and second belts differs in magnitude from the axial component of the reaction force exerted on the partition by the other belt.
摘要:
There is disclosed an apparatus for mounting a grass box of a mower having a machine body, a covered grass box, a mowing unit and a duct through which the grasses mowed by the mowing unit are inputted into the grass box. The apparatus includes a pair of guide rails, laid under the cover, into which the grass box is removably inserted from the rear side. In the mower having the covered grass box disposed below a handle rod, the apparatus further includes stoppers through which the grass box is rotatably removably engaged with the cover and a fixing member for fixing the grass box to the cover in a closed state.
摘要:
A mower comprising a mower frame attached to the bottom of a vehicle body, cutting blades rotatably supported by vertical shafts on the mower frame, a drive assembly on the frame for rotating the blades, arms supported on the frame and pivotally movable upward or downward, gauge members supported by the free ends of the pivotal arms, an operating member operatively connected to the pivotal arms for pivotally moving the arms, and locking means for disengageably holding the operating member. The mower frame is upwardly or downwardly movable by the movement of the pivotal arms with the gauge members in engagement with the ground to position the cutting blades at the desired level. The blades are retainable at this level by the locking means.
摘要:
An oil ring 1 comprises an annular oil ring body 10 having a pair of rail portions 12 at its axially upper and lower portions and butt ends, and a coil expander 20 assembled in the inner periphery of the oil ring body 10. The cross-sectional profile taken in the radial direction of the outer peripheral sliding surface (f) of the pair of rail portions 12 has a nearly straight region (f1) with a length of equal to or more than 0.05 mm in the center and curved regions (f2) formed on both sides of the straight region (f1).
摘要:
There is disclosed a gait type mower constructed such that a mowing unit is mounted on a front part of a vehicle, driving wheels are provided at a rear part thereof, and handles are installed backwards. An engine and a variable speed gear interlocking therewith are loaded on the vehicle. The power is imparted from output shafts of the gear via belt transmission mechanisms to the driving wheels. An improved mower is arranged such that: the engine is placed in front of the axle, while the variable speed gear is placed behind the axle; the output shafts are positioned substantially upwardly of the axle in front of the gear; and the belt transmission mechanisms are disposed in the up-and-down directions.
摘要:
A cutter-trimmer comprising a drivingly rotatable cutter disposed at the front end of the body thereof, a guide handle disposed at the rear end of the body, a wheel member disposed in the vicinity of the cutter and reversibly rotatable about a horizontal axis for supporting the body thereon, and a cutter driving engine and a wheel member driving electric motor provided at a longitudinally intermediate portion of the body toward its front end. The device is adapted to perform a cutting operation while traveling forward, rearward or sideways by shifting the wheel member to a forward position or to a lateral position about a vertical axis and holding the wheel member in the shifted position.
摘要:
A method of manufacturing an oil ring is disclosed. The oil ring includes an annular oil ring body having a pair of rail portions at its axially upper and lower portions and butt ends, and a coil expander assembled in the inner periphery of the oil ring body. A number of oil ring bodies and annular spacers having a smaller diameter than the oil ring bodies are stacked, and then aligned and retained using a jig such that an outer periphery of the oil ring bodies becomes a circle. The aligned oil ring bodies are rotated and a flat region that is substantially level with respect to the outer peripheral sliding surface of the plurality of oil ring bodies is formed. Curved regions extending on both sides of that flat region are formed using a buff or an elastic grindstone.
摘要:
An apparatus for gas-liquid contact in which tubular structure fillers having a cross section of any of various shapes and having straight tubular portions are arranged in a substantially vertical direction in the form of plural steps so that the gas-liquid contact surfaces of the fillers may be parallel with the flow of the gas,the apparatus for gas-liquid contact being characterized in that the gas-liquid contact surfaces comprise rough surface portions, porous surface portions, meshes or plates to which meshes adhere, or there is interposed, between the plural steps of the fillers, a dispersing plate for receiving the liquid downward coming from the site above the fillers, dispersing the liquid, and allowing the liquid to downward flow.
摘要:
A method for recovering carbon dioxide by absorbing carbon dioxide present in a combustion exhaust gas using an aqueous alkanolamine solution, comprising the step of bringing a combustion exhaust gas from which carbon dioxide has been absorbed and removed into contact with water containing carbon dioxide. A method for treating a combustion exhaust gas for denitration using ammonia as a reducing agent and for removal of carbon dioxide by absorption with an aqueous alkanolamine solution, which method comprising the steps of recovering ammonia present in the combustion exhaust gas after the carbon dioxide removal, and using the recovered ammonia as a reducing agent for the denitration. A method for removing CO.sub.2 from a combustion exhaust gas comprising the step of bringing the combustion exhaust gas into contact under atmospheric pressure with an aqueous monoethanolamine solution having a concentration of 35% by weight or more.
摘要:
In order to substantially reduce the time required for examination and to enable the structure of the microscope apparatus for examining a wafer to be made in a compact size, the apparatus comprises a wafer examination unit provided midway on the transportation course of the wafer transporting means for being able to move the wafer under examination independently of the direction of its transporation, and an objective disposed above the wafer examination unit for being able to move along the upper face of the wafer which is held at the position of examination and in a direction different from the direction of the transportation.