Abstract: A feed hopper assembly particularly adapted for feeding particulate material which agglomerates has, end walls and side walls which define a storage chamber having a charging opening for the particulate material, and the side walls converge to form a discharge outlet for dispensing the particulate material. A pulsating diaphragm assembly including, an elastomeric member on the inner wall of the storage chamber, and pump means for causing the elastomeric member to expand the deflate. A transverse shelf or surface adjacent the discharge outlet can be provided for delivering the particulate material to a point of use. Bleed means can also be provided to bleed air from the pulsating diaphragm assembly in the event that pulsations terminate when the diaphragm assembly is in the expanded condition.

Abstract: The method of transporting an electrostatic strip wherein the strip on a supply roll is pulled from the supply roll which is normally freely rotatable and the strip having been pulled from the supply roll is returnable to the supply roll by driving the supply roll in reverse to rewind the electrostatic strip; the unspooling of the electrostatic strip from the supply roll is performed by a pair of feed rollers; after imaging the electrostatic strip, it is carried between a pair of longitudinally ribbed guides past a magnetic toner to an inspection station at which station it may be viewed and optionally severed from the remainder of the electrostatic strip, which remainder is returned toward the supply roll for neutralization, detoning, reimaging and refeeding to the viewing station, while the portion of the electrostatic strip at the viewing station is carried in a generally horizontal planar course to a fuser for making permanent the toned, unfused electrostatic image.

Abstract: A leader pin to securely hold the leading end of a strip for high speed unwinding wherein the end of a strip is inserted in a slot in a body and a keeper is inserted in the body embraced by the end of the strip; the keeper is provided with a resilient latch that is engageable with a channel on the body whereby the body and the keeper are strongly engaged together.

Abstract: An electrostatic display, recall or print apparatus in which a magnetically toned latent electrostatic pattern or image on an electrostatic strip is inspected, and either advanced to a fusing station for being made permanent, or withdrawn to a detoning station for magnetic detoning, from which the strip may once more be advanced and reused for the application of a different electrostatic image and for retoning.

Abstract: An electrostatic display, recall or print apparatus in which a latent electrostatic pattern or image is formed on a dielectric strip; the image is toned (made visible by dusting with an electrostatic powder) and is advanced to a display station where it is viewed; if the image is acceptable, the strip is advanced to a fusing station and made permanent; if the image is not acceptable, the strip is withdrawn, the electrostatic image is neutralized and the toner is removed.

Abstract: Frame location system for microfilm retrieval system. Frame address of desired frame is stored in first reversible counter having maximum count greater than the maximum possible number of frames in a roll of microfilm. Frame address of frame currently being viewed is stored in second reversible counter of same count capacity. A burst of pulses equal to capacity of both counters causes both to count up. First counter to overflow gates burst pulses into third reversible counter. Second counter to overflow terminates count in third counter. As microfilm moves, optical sensors sense frame identifying "blips" on microfilm thereby reducing count in third counter and slowing film to halt when desired frame is in position at viewing station.

Abstract: Analog display utilizing liquid crystal material and for being multiplexed wherein the segments (one group of electrodes) are arranged in groups opposite sectors (the counter electrodes) and wherein the segments in each group are disposed in a sequence opposite to the sequence in which the segments of the next adjacent group are disposed and, further, wherein a segment in each group corresponds to a segment in each other group and wherein all corresponding segments are electrically interconnected in a series connection. In timed sequence with the input signals applied to the sectors, input signals are applied to the segments in a first predetermined sequence with regard to a direction of display movement to be provided by the display, and alternately, the input signals are applied to the segments in an opposite sequence with regard to the direction of display movement whereby the display movement is in one continuous direction.