摘要:
The de-watering apparatus for a two-wire paper machine is constructed in such a manner that following the convergence of both wires, firstly, a uniform pressure at a forming roll is exerted on the suspension layer located between the wires. Subsequently, both wires pass de-watering rails which may be located in the upper and/or the lower wire. In this case, an under-pressure is exerted at least at the rails located in the upper wire. At least one further de-watering member then follows before both wires are separated again. The de-watering apparatus can also be used after a preliminary de-watering section, for example an endless wire, and also in the direct vicinity of a head box.
摘要:
The dynamic loudspeaker is comprised of a speaker housing and a front sound panel. A diaphragm is mounted at the front of the speaker. A moving-coil unit is mounted in the speaker and includes a moving coil coupled to the diaphragm for transmitting oscillatory motion thereto. The moving-coil unit when in operation generates heat to such an extent as to tend to limit the rated steady power at which the loudspeaker can be operated without damage to the moving-coil unit. This limiting tendency is counteracted according to the invention by improving the dissipation of the heat generated by the moving-coil unit. The speaker housing or a surface portion thereof and/or the speaker sound panel or sound wall or a surface portion thereof is comprised of a material having a thermal conductivity W equal to or greater than 40 kcal/m-h-.degree.C. A heat-transmitting structure is comprised of a material likewise having a thermal conductivity W equal to or greater than 40 kcal/m-h-.degree.C., and it extends from the moving-coil unit to at least one of the aforementioned portions of the housing and/or sound wall, and is in thermally conductive engagement with both the latter and the moving-coil unit.
摘要:
The container for the stock suspension is made as a body of revolution with a conical circumferential wall and a conical end wall which defines an acute angle with the circumferential wall to facilitate separation of materials. A compartment is formed in the circumferential wall near the end wall. This compartment is of increasing radial thickness in the direction of rotation of the rotor and terminates at the location of an outlet for heavy impurities.
摘要:
The invention proposes a fitness and therapy mat for standing and walking made of foamed material for sport, gymnastic, and therapeutic purposes. The foamed material used has an open cell structure. Thus the elasticity of the foamed material structure alone determines the spring action of the mat when the mat is under stress. The spring action of the fitness and therapy mat approaches the ideal spring, and the resilience shows minimal damping.
摘要:
The invention relates to a process for production of workpieces (1), especially motor vehicle drive assemblies, on a production line, the workpiece (1) having lateral surfaces (3, 11, 12, 18, 21) extending more or less parallel to a longitudinal axis (4) and also frontal areas (7, 8) extending more or less perpendicular to these surfaces and being pivotable and immobilizable in a number of machining positions for the individual machining steps.For the purpose of machining the lateral surfaces (3, 11, 12, 18, 21) and partial areas (2, 5, 6, 20) of the workpiece (1) accessible from them, the workpiece (1) is moved to the individual production stations with its longitudinal axis (4) vertically directed, at the individual production station is pivoted about the longitudinal axis (4) into the machining position required, and is immobilized and clamped in this position.Application of the process claimed for the invention is made possible by the fact that the workpiece (1) is outfitted with a special adjusting element (adjusting holes 9 in the outer circumference of a frontal surface 8 and in a circular line with the longitudinal axis 4 as center).The production process claimed for the invention yields low cost accompanied by maximum production flexibility and is at the same time suitable for high-output mass production (FIG. 1).
摘要:
The invention relates to a fluid-actuable releaser in which an annular piston (6) is guided in a casing (3) which is provided with a sleeve (10) for guiding the annular piston (6) radially internally and for sealing purposes, the sleeve (10) being axially fixed by partial plastic deformation after insertion into the casing (3) with its external diameter in a bore (16) in the casing (3).
摘要:
The wet section of a twin wire papermaking machine is provided with an open forming roll at the lower wire and with the combination of a suction box at the lower wire and a vacuum suction box at the upper wire. Furthermore, by selecting the elevational position or level of the individual wire sections there can be obtained particularly advantageous conditions for the operation of the papermaking machine throughout a wide field of application, especially heavy types of paper at relatively low operating velocities of the papermaking machine. Gap-former and hybrid-former constructions of the papermaking machine are possible.
摘要:
A device for machining elongate rods has a feed means defined by a track and a plurality of V belts which feeds the rods in an uninterrupted succession one behind the other in a feed direction transverse to their longitudinal axes. The track defines a an arc of a circle adjacent the machine tools which is parallel to the circular machining path of cutting elements of the machine tools.