Abstract:
A facsimile transmitter includes a lamp for directing a light beam toward a scanner which reflects the light onto a document to be reproduced, picks up the light reflected from the document and directs such light to a photomultiplier operable to send to a reproducing recorder as electrical signal proportional to the intensity of the light and the shade value of the document. The lamp is accurately pre-located and pre-mounted in a permanent holder which is detachably secured to a lamp housing and which, as an incident to attachment to the housing, automatically locates the lamp in a precisely established position to produce light of maximum intensity, the pre-mounted lamp being located in such position by the holder regardless of dimensional irregularities in the lamp. To focus the light beam on the document accurately and to direct the reflected light along an exact path toward the photomultiplier, the scanner is formed as two initially adjustable telescopic units carrying relatively simple plane mirrors adapted to be adjusted into precisely established positions by sliding and rotating the units and thereafter held permanently in such positions by bonding the units rigidly together.
Abstract:
A facsimile transmitter includes a lamp for directing a light beam toward a scanner which reflects the light onto a document to be reproduced, picks up the light reflected from the document and directs such light to a photomultiplier operable to send to a reproducing recorder an electrical signal proportional to the intensity of the light and the shade value of the document. The lamp is accurately prelocated and premounted in a permanent holder which is detachably secured to a lamp housing and which, as an incident to attachment to the housing, automatically locates the lamp in a precisely established position to produce light of maximum intensity, the premounted lamp being located in such position by the holder regardless of dimensional irregularities in the lamp. To focus the light beam on the document accurately and to direct the reflected light along an exact path toward the photomultiplier, the scanner is formed as two initially adjustable telescopic units carrying relatively simple plane mirrors adapted to be adjusted into precisely established positions by sliding and rotating the units and thereafter held permanently in such positions by bonding the units rigidly together.
Abstract:
A facsimile transmitter includes a pair of traveling scanners carried by a vertically shiftable head and alternately movable through an active or scanning stroke across a document to be reproduced as the document is fed continuously beneath the scanners. A light source carried on the head transmits a collimated beam of light toward the active scanner which directs the light downwardly onto the document to detect the shade value thereof, picks up the light reflected upwardly from the document and directs such light in a collimated beam to a photomultiplier operable to send to a reproducing recorder an electrical signal varying in proportion to changes in the intensity of the beam and the shade value of the document. At the completion of its scanning stroke, each scanner is shifted to an inactive position out of the light beam and is moved reversely through a return stroke while the other scanner is moved through a scanning stroke to direct the light from the source onto the document and then to the photomultiplier. By feeding the document beneath the scanners, documents of any length can be reproduced and, through the use of a vertically movable head, documents of various thicknesses can be reproduced. A pressure responsive actuating mechanism for lowering the head and specially constructed rollers for advancing the document insure uniform and straight line feeding of the document regardless of its thickness.
Abstract:
A tray moves beneath a punch to catch a part which is knocked downwardly out of the punch as the latter is retracted. Thereafter, the tray is shifted rearwardly from the punch along a generally arcuate path and with an accelerated motion so as to throw the part away from the punch with a positive slinging action.
Abstract:
A hand-held fastener driving gun is suspended for comparatively free horizontal and vertical movement by an arched leaf spring. The spring also supports a flexible tube for delivering fasteners to the gun and a flexible line for supplying power to the gun, the spring preventing the tube and the line from becoming tangled and kinked during movement of the gun.
Abstract:
A GRAPPLE FOR GRIPPING A SUCCESSION OF ARTICLES TO BE LIFTED IN WHICH JAWS ATTACHED TO ARMS MOVE BETWEEN OPEN POSITIONS AND CLOSED FOR GRIPPING POSITIONS IN RESPONSE TO THE ARMS BEING LOWERED TO SPREAD POSITIONS AND RAISED TO COLLAPSED POSITIONS. MOUNTED ON THE GRAPPLE IS A LATCH WHICH SWINGS BETWEEN LATCHED AND UNLATCHED POSITIONS AUTOMATICALLY IN RESPONSE TO RAISING AND LOWERING OF THE GRAPPLE THEREBY TO AUTOMATICALLY LOCK THE JAWS OPEN TO GRIP AN ARTICLE AND THEN TO AUTOMATICALLY UNLOCK THE JAWS TO FREE THE LATTER FOR MOVEMENT TO THEIR GRIPPING POSITIONS. THE LATCH IS MOUNTED BY A PIN-SLOT CONNECTION ON ONE MOVING PART OF THE GRAPPLE AND CAN HOOK AROUND A CATCH ON ANOTHER PART OF THE GRAPPLE TO LOCK THE GRAPPLE OPEN. THE LATCH IS SPRING BIASED TO SWING ABOUT THE PIN, AND THE LATTER MOVES UP AND DOWN IN THE SLOT DURING USE OF THE GRAPPLE TO CAUSE THE LATCH TO BE BIASED FIRST TOWARD THE LATCHED POSITION AND THEN TOWARD THE UNLATCHED POSITION.