Abstract: In order to achieve high sensitivity without an increase in device complexity or cost, a far-ultraviolet absorbance detection device for liquid chromatography is provided with: an optical system including a light source that emits light including far-ultraviolet light, a diffraction grating for dispersing the light emitted from the light source, a flow cell through which a liquid is passed, a slit for selecting a predetermined wavelength of +1 order light diffracted by the diffraction grating and causing the light to enter the flow cell, a first photodetector for detecting the light transmitted by the flow cell, and a second photodetector for detecting light other than the +1 order light diffracted by the diffraction grating; a mechanism for evacuating or substituting the optical system with nitrogen gas; and a computation unit that calculates absorbance from an output signal from the first photodetector and an output signal from the second photodetector. The second photodetector is fixedly disposed.

Abstract: A roll feed apparatus has first and second rolls for gripping a plate when rotated in first directions and moving from each other when rotated in second directions, and first and second brake pieces for fixing the plate during rotation in the second direction. A pivot body has support portions along its length for rotatably supporting a first roll shaft at opposite ends. A pair of pivot shafts parallel to the first roll shaft are rotatably connected to the pivot body and a housing and eccentric with respect to each other. First and second adjusting arms are fixed to the shafts; third and fourth adjusting arms are pivotally fitted to the support portions and support the first brake piece. A first adjusting device with first and second links coupled to the first and second adjusting arms moves portions of the first roll and first brake piece located next to first and second arms towards or away from the second roll and the second brake piece by pivoting these arms.

Abstract: A roll feed apparatus having a first roll and a second roll for intermittently clamping therebetween and feeding sheet material. An adjusting device is provided for adjusting the gap between the first and second rolls and includes a pivot member adapted to cause, when it pivots, the first roll to more towards and away from the second roll. First and second braking members temporarily fix the sheet when it is unclamped from the rolls. The second braking member is carried by a braking position adjusting arm disposed between the pivot member and the path of feed of the sheet. The adjusting arm is pivotally carried by the pivot member and arranged such that an imaginary plane connecting the portions of the first roll and the second braking member closest to the path of feed of the sheet is moved, when the pivot member pivots over a predetermined angle, substantially in parallel with the path of feed of the sheet.

Abstract: A roll feed apparatus having a first roll and a second roll for oscillatory rotation in opposite directions such as to intermittently feed a sheet clamped therebetween. The roll feed apparatus comprises a pivot member having one end fitting on a pivot shaft extending from the housing of the apparatus substantially in parallel with the first roll shaft and the other which is free, the pivoting member being mounted at its portion between the one and the free ends on a first roll shaft, the pivot member being adapted to cause, when it pivots, the first roll shaft and the first roll to move towards and away from said second roll, a first adjusting device for adjusting the force by which the first roll is urged towards the second roll is adjusted, and a second adjusting device for adjusting the gap between the rolls in accordance with the thickness of the sheet to be fed. The first and second adjusting devices are operable independently of each other.

Abstract: Disclosed herein is an apparatus for moving material such as metal sheets or strip in production machines. The apparatus includes two spaced-apart, double-acting jacks disposed in parallel relation to the direction of movement for the strip. Each jack comprises two piston rods extending out of opposite ends of the cylinders from a common piston. The piston rods are secured at their free ends to standing columns arranged at the four corners of a rectangular base. A cross member rigidly interconnects the cylinders of the jacks and is provided with two transport grippers having jaws, one of which is moved by a jack to grip the strip at opposite sides thereof. The grippers are disposed in a plane containing the strip and longitudinal axes of the piston rods so that applied forces to the strip coincide with the driving plane of the cylinders.

Abstract: Disclosed is economical and reliable apparatus for precisely intermittently feeding prescribed finite-lengths of edgewise perforated carrier sheet material. The intermittent feeding apparatus basically requires a rotatable drum having its cylindrical surface provided with circularly arrayed radially extending prongs that are removably engageable through the carrier edgewise perforations and which drum is intermittently rotated for a prescribed angular-value cycle so that the drum prongs feed the carrier for an approximate-length roughly equivalent to the desired exact finite-length. At the conclusion of each incremental rotation for the pronged drum, a camming assembly (having a camming first-component circularly arrayed around the drum and having a camming second-component mounted to a reciprocatable piston) rectifies the approximate-length carrier feed into the exact finite-length feed desired for the carrier sheet material.

Abstract: A roll feed apparatus for feeding a sheet material successively to different working stations. The apparatus includes an oscillation driving device, a main sector roll integrally carried by a main roll shaft and adapted to be oscillatorily driven by the oscillation driving device, and a sub-sector roll integrally carried by a sub-roll shaft extending in parallel with the main roll shaft. The sub-sector roll is adapted to cooperate with the main sector roll in clamping a sheet material therebetween and feeding the same.

Abstract: Contact insertion and wire lay apparatus for manufacture of wire harnesses which provides for insertion of a contact affixed to the trailing end of a wire segment after wire lay. The invention provides for gripping a wire segment while the segment is caused to lay in a desired configuration. A pair of sets of tip jaws enable forward and trailing end contacts of the wire segment to be inserted into selected contact holding devices. In addition, the apparatus is arranged to facilitate lateral receipt and rejection of the wire segments.

Abstract: A pneumatic control arrangement for a high speed dual slide feeder for punch presses and the like; the feeder comprising two reciprocating feed slides which are respectively reciprocated by two main fluid motors and which respectively carry two gripper fluid motors. These four fluid motors are adapted to be sequentially controlled by only two control lines which arranged in a cross over type circuit and which have opposite pressure-exhaust conditions existing therein. This arrangement permits a substantial simplification in the valving and in the associated control lines over that normally required to produce the rapid successive alternate stock feed strokes of said feed slides; such thereby substantially reducing the cost of the feeder while increasing the reliability and durability thereof.

Abstract: A low cost pneumatic stock feeder for punch presses and the like wherein a one-piece U-shaped main frame is provided for supporting and guiding a reciprocating feed slide. One end of a stock gripper bar is pivotally secured to the feed slide while the other end thereof is adapted to be actuated by a fluid motor carried by said feed slide whereby an efficient mechanical advantage is afforded for the stock gripping action. A continuously acting friction braking means is provided for engaging just the longitudinal side corners of the stock material so that the latter may be yieldably held during the time when the gripper bar is released and so that there is a minimum of marring or scratching of that portion of the stock material from which parts are to be stamped.

Abstract: A dual slide pneumatic feeder for intermittently advancing stock into the work station of a punch press or the like wherein the fluid motors of the feeder are controlled by a fluid valve means that is adapted to be intermittently driven by a ratchet mechanism. The ratchet mechanism is adapted to be actuated from two different control points; first from a trigger means that is operable in response to the movement of the press ram, and secondly from a means operable in response to the completion of a feed stroke of one or both of the two feed slides. In this control environment the two feed slides may be made to execute a plurality of consecutive feed strokes in response to each cycle of operation of said press.

Abstract: A low cost pneumatic stock feeder for punch presses and the like wherein a one-piece U-shaped main frame is provided for supporting and guiding a reciprocating feed slide. One end of a stock gripper bar is pivotally secured to the feed slide while the other end thereof is adapted to be actuated by a fluid motor carried by said feed slide whereby an efficient mechanical advantage is afforded for the stock gripping action. A continuously acting friction braking means is provided for engaging just the longitudinal side corners of the stock material so that the latter may be yieldably held during the time when the gripper bar is released and so that there is a minimum of marring or scratching of that portion of the stock material from which parts are to be stamped.

Abstract: A high speed dual-slide type pneumatic feeder for intermittently advancing strip stock into the work station of a punch press or the like characterized by a novel asynchronous type fluid control system which includes a rotary control valve that is intermittently stepped to a plurality of predetermined operative angular positions by means of a ratchet mechanism that is adapted to be operated in response to the ram motion of the punch press. The feeder is also characterized by an improved, compact, flexible and more efficient structural arrangement, and by a novel stock grip releasing system and valving arrangement therefor that automatically causes the stock to be released immediately after completion of each feed stroke of the feeder.

Abstract: High speed wire feeding means comprises a wire feed roll and a pressure roll, the wire feed roll being driven by a printed circuit motor under the influence of control means which maintains a high and constant level of acceleration and deceleration at the beginning and end of the feeding cycle. One embodiment has a single driven feed roll and a plurality of side-by-side pressure rolls for feeding a plurality of wires. This apparatus is capable of producing a bundle of wires having varying lengths in a minimum amount of time.

Abstract: Apparatus and method are disclosed enabling automatic baseline compensation in a dual beam spectrophotometer. The wavelength adjustment mechanism of the instrument monochromator, is driven in step-wise fashion by a stepping motor or the like, which also drives the tape advance means of a magnetic tape recorder, whereby the tape is advanced past a read/write head in incremental steps with the advance of the wavelength adjustment mechanism. During a calibration run an error signal is generated, which signal indicates at each discrete wavelength whether the imbalance between the reference and sample signals is in a first (or "+") direction, or in a second (or "-" direction). The information conveyed by the error signal is written as a single "+" or "-" bit upon the tape during each step-wise movement of same.