Hauni-werke Korber & Co Kg.

Adolf Helms

Peter Brand

Nikolaus Hausler

Uwe Heitmann

Heinz-Christen Lorenzen

Peter Pinck

Wolfgang Siems

Anton Baier

Franz P Koch

A cigarette testing apparatus wherein a rotary drum-shaped conveyor has axially parallel peripheral flutes for cigarettes and is flanked by two swash plates which rotate therewith and carry annuli of elastically deformable sealing elements for the respective ends of cigarettes on the conveyor. Each sealing element has a socket facing the adjacent end of the cigarette in the corresponding flutes of the conveyor when the cigarette is inserted into the flutes. The swash plates thereupon move the sealing elements nearer to the ends of the cigarettes therebetween whereby the ends of the cigarettes enter the corresponding sockets and displace transversely extending partitions of the sealing elements with attendant radial contraction of those tubular sections of the sealing elements which surround the respective sockets. This moves the internal surfaces of such sections into sealing engagement with the external surfaces of the ends of the cigarettes during transport of cigarettes through the testing station where the cigarettes receive streams of testing fluid flowing through centrally located apertures of the adjacent partitions. The sealing elements have thin-walled annular membranes flanking the respective partitions to allow for movement of the partitions in response to the application of pressure by the respective ends of a cigarette as well as to facilitate radial deformation of the tubular sections in response to such displacement of the partitions. The sealing elements reassume their undeformed states when they move away from the respective ends of the cigarette therebetween in response to further rotation of the swash plates.

Apparatus for testing cigarettes or the like

A running tow of spread-out filamentary filter material in a filter rod making machine is sprayed with plasticizer by two ultrasonic atomizing devices which are disposed at the opposite sides of the path of the tow and each of which has a flexural resonator connected to one or more piezoelectric elements which, in turn, are connected to a source of a-c potential in order to expand and contract when the atomizing devices are in use. Each flexural resonator has an atomizing surface which extends transversely of the path for the tow, and the system which supplies plasticizer to such surfaces has pipes discharging plasticizer in the region of some or all oscillation nodes which develop when the atomizing devices are in use.

Apparatus for applying atomized liquid to a running layer of filamentary

Apparatus for applying atomized plasticizer to a running tow of

Apparatus for making holes in a running web of wrapping material in a filter tipping machine has a housing which defines an elongated passage for the running web and contains rows of first and second electrodes which are disposed at the opposite sides of the passage and define spark gaps forming part of the passage. When the web is drawn through the passage and the electrodes receive high voltage impulses from the secondary winding of a transformer, sparks which are caused to jump across the gaps burn holes in the running web with attendant heating of the electrodes as well as development of dust and ozone. The intake end of a conduit is connected to the housing to draw through the passage a stream of cool atmospheric air when a blower which is connected to the discharge end of the conduit is in operation. The air stream cools the electrodes to thereby prolong their useful life and to reduce the likelihood of charring of the web. Furthermore, the air stream withdraws from the housing particles of dust as well as ozone. The particles of dust are intercepted by a first filter which is installed in the conduit ahead of a second filter for separation of ozone so that dust cannot contaminate the second filter and the second filter prevents the ozone from reaching and corroding the blower.

Apparatus for making holes in webs of wrapping material for cigarettes

A running web of wrapping material which is about to be converted into adhesive-coated uniting bands for joining plain cigarettes with filter plugs in filter tipping machines is transported through the passage of a housing wherein the web travels through a series of spark gaps between pairs of spaced-apart electrodes. The sparks which are caused to jump across the gaps perforate the web with attendant development of ozone and particles of dust. The passage of the housing forms part of an endless path for the circulation of Argon which reduces the rate of development of ozone, which is cooled to cool the electrodes, and which is caused to pass through a filter serving to intercept the particles of dust which are removed from the spark gaps. The making of holes in a noble-gas atmosphere prolongs the useful life of the electrodes.

Method and apparatus for treating wrapping material for cigarettes or

A web of cigarette paper, imitation cork or similar sheet-like material which is used as a tubular wrapper for rod-like fillers of tobacco or filter material or which is subdivided into discrete uniting bands for plain cigarettes and filter plugs is coated with one or more layers of an aqueous dispersion of hotmelt. The layer or layers are thereupon heated to expel water therefrom before the web is draped around one or more rod-shaped smokers' products. The layer or layers are thereupon heated to a temperature at which the dried hotmelt melts, either before or during and/or subsequent to draping, to activate the hotmelt. If the web is converted into uniting bands prior to draping around groups of coaxial rod-shaped articles, and if the filter plugs of filter cigarettes are to be provided with holes for admission of atmospheric air into the column of tobacco smoke, the web is provided with two spaced-apart layers of aqueous dispersion of hotmelt prior to subdivision into uniting bands and the holes for admission of atmospheric air are formed in the two layers subsequent to expulsion of liquid.

Method and machine for processing webs of cigarette paper or the like

A solenoid operated shutoff valve for compressed air has a tubular ferromagnetic core which is surrounded by an excitable coil and confines a reciprocable ferromagnetic plunger movable into and from sealing engagement with a fixedly mounted valve seat. The seat is installed in one of two coaxial tubular sections of the core and the other section has an axial opening for admission of compressed air to one end face of the plunger so that the other end face of the plunger normally bears against and seals the fluid evacuating opening in the seat. The periphery of the plunger is formed with straight and/or helical grooves defining discrete paths for the flow of compressed gas from the other section of the core into the opening of the seat when the coil is energized to propel the plunger away from the seat. The plunger may be formed with an axial bore which establishes a further path for the flow of compressed air into the opening of the seat. The opening of the seat may consist of an annulus of discrete ports or of a circumferentially complete channel in that end face of the seat which is adjacent to the respective end face of the plunger. The surfaces of the plunger are coated with nickel to reduce friction between such surfaces and the internal surface of the respective section of the core. If at least one of the peripheral grooves of the plunger is a helix, the plunger rotates in response to opening of the valve to thus prevent the accumulation of contaminants in the grooves and/or along the internal surface of the respective core section.

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Hamburg, Germany

Adolf Helms