摘要:
A device for separating sheets of a recording medium has a feed head (22) that, together with feed rollers (58), lies on the top sheet of a horizontally arranged stack of the recording medium. The feed rollers (58) push the top sheet against a rising incline, so that its leading edge is lifted up and separated from the stack. The feed head (22) is arranged on an arm (18) that is designed to swivel freely on a swiveling plane that is parallel to the plane of the incline. In the feed head (22), the feed rollers (58) can move away from the incline parallel to the plane of the stack against the spring force.
摘要:
The present invention relates to a process for the continuous preparation of chlorine by reaction of hydrogen chloride with oxygen in the presence of a heterogeneous catalyst, in which the conversion of hydrogen chloride in a single pass through the reactor is restricted to from 15 to 90%.
摘要:
A piston rod-less linear drive has an elongated housing containing a guide slide moving in the longitudinal direction. The connection between the entraining member and the guide slide is with the interposition of an abutment unit attached to the guide slide, such abutment unit furthermore serving to limit the path of movement of the guide slide.
摘要:
An apparatus for sorting identical flat-bottomed objects has a vibratory conveyor defining a generally horizontal support surface. A plurality of the objects are supplied to an upstream end of the surface standing on their flat bottoms and the objects travel along the surface while standing on their bottoms. A sorting drum rotatable about a horizontal axis at a downstream end of the conveyor is formed with at least one row of radially outwardly open seats generally complementary to the objects and each having a flat floor. The drum is rotated between a pickup position in which the flat floors of the one row of seats are aligned and generally coplanar with the support surface and closely juxtaposed with the downstream end and a handoff position with the one row of seats raised up above the support surface. The objects are taken out of the seats in the takeoff position.
摘要:
An optical scanning system includes a power meter that during calibration operations is illuminated by an attenuated excitation beam. The power meter measures optical power in the attenuated excitation beam at various index settings of a variable optical attenuator, and the system constructs a lookup table that relates incident excitation beam power to the index settings of the attenuator. The system then uses the table to select the appropriate setting for the attenuator in order to deliver to the sample an excitation beam of a specified optical power. The system calibrates the gain of a detector by redirecting, or reflecting, the excitation beam of known intensity to the detector. A photometric device in the detector produces a signal that is proportional to the intensity of the beam at various gain settings. The system then produces a lookup table that relates the gain settings to the actual gain of the detector, that is, to the ratio of the known incident power to the detector readings. The system thereafter uses the table to select the appropriate gain setting for data collection and/or to normalize the data. A beam splitter included in the system preferably discriminates between the light is passes and the light it redirects based on the spatial properties of the light. During calibration operations the excitation beam is reflected to the detector as wide diameter beams, which are passed through the beam splitter. During sample measurement operations the excitation beam is reflected by the sample as a narrow-diameter beam, which the beam splitter directs away from the detector.
摘要:
A process and apparatus for resistance-welding produce a welding current which pulsates in periodic half-waves, in particular an alternating current. The, welding current is generated from a primary alternating voltage which is chopped n times (n>1) in each half-wave and pulse width modulated in order to regulate the welding current. A regulator is provided and has a storage device containing the current nominal values for each chopping interval, corresponding to the welding current form, for comparison with each actual current value determined in each chopping interval.
摘要:
The components of cryostats are interconnected by means of tension members which are frequently made from a fiber glass reinforced plastic material. Such members, which exhibit a rectangular cross-section and bores for receiving the mounting bolts have shown to be not fully reliable because they tend to break easily in the areas of the bores. Consequently, loop-like tension members have been frequently used; but their production is expensive and connected with considerable production tolerances. The invention proposes to use a tension member which is cut out from a plastic sheet material reinforced by a fiber glass weave, and which comprises an elongated portion (21) with parallel edges, followed on both ends by enlarged areas (22) with bores (25) for the mounting bolts. The transition between the central area (21) and the enlarged areas (22) is formed by a transition portion (23) with arc-shaped edges (24). The tension members can be fastened directly on the walls of the components to be interconnected, by means of screws. The resilience of the sheet material enables spaces directed vertically to the plane of the sheet material of the tension member to be bridged.
摘要:
A computer implemented method includes outputting a dial tone from a call block system. The dial tone indicates to a calling party that a call block feature is enabled for a party. The computer implemented method includes storing messages for the party when the call block feature is enabled.
摘要:
The invention relates to a monitoring apparatus for monitoring a state of wear of a component of a reciprocating piston internal combustion engine wherein an oil collection device is provided for the collection of lubrication oil from the cylinder so that a predetermined measured quantity of lubrication oil is suppliable from the cylinder to a measurement device.