摘要:
Apparatus is provided for diverting groups of sheets to one or more processing machines which are adjacent to an elongated path defined by a transporting system consisting of a series of conveyors separated from each other by pivotable switches. Each processing machine can receive sheets from the transporting system in response to pivoting of the adjacent switch to a sheet-diverting position, and the switch which precedes such switch is pivotable to a position in which it diverts sheets onto an auxiliary conveyor which can be started to deliver sheets directly to the respective processing machine. The discharge end of the transporting system delivers surplus sheets to a stacker, and a switch which is located ahead of the foremost auxiliary conveyor can be caused to divert sheets into a row forming machine.
摘要:
Apparatus for trimming the front, head and foot ends of brochures has a stationary platform which supports one brochure at a time. A first knife which trims the front end of the brochure on the platform descends in a vertical plane ahead of two additional knives which thereupon simultaneously trim the head and foot ends of the same brochure as soon as the first knife completes the trimming of the front end. The first knife is pivoted forwardly and away from the additional knives while the additional knives move toward and trim the brochure on the platform. This insures that the first knife is held out of the way while the additional knives move to positions in which their forward ends extend beyond the trimmed front end of the brochure.
摘要:
In a fermentation employing microorganisms or enzymes the nutrient medium is mixed in the fermenter with a filter aid and the inoculum. After completion of the fermentation the fermentation broth is passed into a filter where it is directed through filtration elements whereby a filter cake is caused to deposit on the filtration means, which filter cake is composed of or includes the filter aid and all or a substantial part of the microorganisms or enzymes. The fermentation filtrate is then discharged while the passage of fermentation broth from the fermentor to the cake filter is suspended. A centrifugal motion is then imposed on the filter elements whereby the filter cake is loosened from the filter elements followed by recycling of the detached filter cake into the fermentor for reuse of the microorganisms or enzymes after resuming the fermentation.
摘要:
A filter has a housing defining a closed chamber around a hollow shaft which is rotatable in the housing and which carries a plurality of filter elements so that fluid can be pumped through the filter elements into the hollow interior of the shaft. The shaft is rotatable with the filter elements relative to the housing for cleaning filter cake off the filter elements between filtering operations. An annular and hollow bellows-type seal surrounds the shaft and has one axial end secured to the housing and an opposite axial end engageable with the shaft for sealing the shaft relative to the housing. This bellows-type seal is made of thin and flexible stainless steel. The inside of the seal may be pressurized by a liquid or gas to force the end of the seal against the shaft and form a tight connection therebetween.
摘要:
A pivot is mounted to extend parallel to a spout axis. A pair of arms are mounted at first ends thereof to swivel about the pivot and carry at second ends thereof holders which support pouring pipes. Each arm can be swiveled to a position beneath the spout and precisely centered with the spout by abutment devices. The holder and pouring pipe are then raised until the pouring pipe engages the spout.
摘要:
A biochemical-action vessel accommodates a substrate in which biochemical reactions are caused by microorganisms. A heat-exchange arrangement is provided in the vessel and removes the heat generated in the substrate by such reactions. The substrate is circulated in the vessel advanced by an advancing arrangement in a closed path which passes through the heat-exchange arrangement. Aerating gaseous medium is introduced into the substrate upstream of the advancing arrangement and in the region of suction generated by the same, and entrained by the circulating substrate so as to supply the oxygen necessary for the aerobic growth of the microorganisms.
摘要:
Apparatus for converting successive stacks of condensed parallel signatures into a single file of signatures which are thereupon processed in a bookbinding machine has a chain conveyor the front portion of which supports and advances an expiring stack of signatures. Successive foremost signatures of the expiring stack are withdrawn by a mechanism which transfers them onto a further conveyor. The horizontal rear portion of the chain conveyor is long enough to support at least one full stack of signatures behind the expiring stack. A fresh stack of signatures is placed onto a platform forming part of a carriage and movable between a raised position in which the platform is located above the rear portion of the chain conveyor to receive a fresh stack and a lower position in which the platform is located below the rear portion of the chain conveyor so that the fresh stack comes to rest on the rear portion. The carriage is movable lengthwise of the rear portion of the chain conveyor to allow for movement of the foremost signature of the fresh stack into abutment with the rearmost signature of the expiring stack before the platform is lowered to allow for return movement of the carriage to a retracted position in which the platform can be lifted again to receive another fresh stack of signatures.
摘要:
A vessel is adapted to contain a liquid phase and a tubular guide baffle in the vessel has spaced open ends one of which at least in part bounds a venturi-shaped passage. A rotary impeller in the vessel has an axial inlet communicating with the one open end and a plurality of peripheral outlets which communicate with the axial inlet. A drive is provided for rotating the impeller so that centrifugal action causes expulsion of liquid phase from the outlets and thereby creates suction in the venturi-shaped passage to draw additional liquid phase from the guide baffle into the inlet. Gas admitting arrangements are provided, including a plurality of nipples communicating with the passage and with a conduit through which gas is supplied, so that the suction in the venturi-shaped passage draws gas from the source via the conduit and the nipples and the gas becomes admixed with the liquid phase.
摘要:
Two receiving conveyors of the station extend at opposite sides of the longitudinal axis of an intake conveyor and have their own longitudinal axes inclined to that of the intake conveyor so as to intersect the same at a point longitudinally spaced from all of these conveyors. A curved intermediate conveyor extends from the discharge end of the intake conveyor to the receiving end of the receiving conveyor and is pivotable about a vertical pivot axis passing through this point. A drive advances the intake and receiving conveyors and drives coupling members which are provided on the receiving conveyor and which can engage with cooperating coupling members on the intermediate conveyor.
摘要:
From a vessel in which micro-organisms grow in a liquid medium containing gas bubbles, a sample is withdrawn into an exterior measuring chamber by means of suction. Gas bubbles are allowed to escape from the sample and thereafter the opacity or turbidity of the sample is measured by passing a light beam through it.