Abstract:
An arrangement for checking blocks of cigarettes comprises an electron camera tube for forming an image of ends of cigarettes of the block, and electric means responsive to illumination of elements of said image for creating a control effect under the control of said element illumination.
Abstract:
An arrangement for checking blocks of cigarettes comprises a photomultiplier for forming an image of ends of cigarettes of the block, and electric means responsive to illumination of elements of said image for creating a control effect under the control of said element illumination.
Abstract:
A device for wrapping block-like articles in sheets of wrapper material is disclosed. The device comprises a first revolver provided with a plurality of cell defining means each adapted to receive one such article, a second revolver provided with a plurality of cell defining means each adapted to receive a web of such wrapper material of channel section, the revolvers being so rotatable stepwise about respective axes of rotation that the revolvers come to rest at successive orientations such that one cell defining means of the second revolver is in alignment with one cell defining means of the first revolver in a direction parallel to the rotational axes of the respective revolvers, the mutually aligned cell defining means then being situated next adjacent mutually opposite ends of guide means comprising a plurality of guide members arranged to define a guide channel therebetween. A pusher member is mounted to be displaceable along a feed path extending through said one cell defining means of the first revolver and through the guide channel. A portion of the pusher member extends through and is displaced along a slot defined in one of the guide members during traverse by the pusher member of a portion of the feed path. During a forward stroke of the pusher member, the pusher member displaces one such article from said one cell defining means of the first revolver through the guide channel into the channel defined by the wrapper material in said one cell defining means of the second revolver. During a return stroke of the pusher member, the latter is retracted towards its initial position in such a manner as to traverse at least that portion of the feed path extending through the guide channel.
Abstract:
A sheet processing device including an elongate storage magazine and a suction conveyor device, is disclosed. The magazine is so mounted that the longitudinal dimension of the magazine is inclined at an angle of about 15* to the horizontal and the stacking direction of sheets stored in the magazine with their adjacent flat faces in contact extends in a direction only slightly inclined to the horizontal. Thus, one end portion of the magazine is maintained at a lower level than the respective other end portion. The magazine is provided with a plurality of endless belts, each of which has one of its runs in contact with the edges of sheets stacked in the magazine. As the endless belts are rotated, the belts contacting the edges of the stacked sheets exert a frictional force tending to urge the sheets towards the lower end portion of the magazine. The wall portions adjacent the lower end portion of the magazine are perforate to permit a stream of gas to be blown into the magazine to loosen sheets stacked in the lower end portion thereof. The magazine is associated with a rotary suction roller assembly which is arranged to extract the sheets singly from the lower end portion of the magazine. Each sheet so removed is transferred to suction conveyor means comprising permeable endless belts through which suction is applied to each such sheet to maintain it in contact with the permeable belts whilst being conveyed thereby to a reception station of a cigarette packaging machine. Due to the horizontal orientation of the magazine the sheets, after being removed therefrom and transferred to the permeable belt conveyor, are substantially vertically orientated. It is therefore necessary for the permeable belt conveyor to cause the sheets to transverse an L-shaped path in order that they may be horizontally orientated when fed to the reception station of the packaging machine.
Abstract:
AN ARRANGEMENT FOR CREATING A DELAYED ELECTRIC CONTROL EFFECT IN RESPONSE TO THE RECEPTION OF AN ELECTRIC IMPULSE COMPRISES A RELAY CHAIN INCLUDING A PLURALITY OF RELAYS CONNECTED SO THAT ON ENERGIZATION OF ANY OF THER RELAYS (EXCEPT FOR THE LAST RELAY OF THE CHAIN) A SUCCEEDING RELAY IS PREPARED FOR BEING ENERGIZED AND RECEIVED VOLTAGE TO ENERGIZE SAID SUCCEEDING RELAY WHEN SUBSEQUENTLY A SWITCH ACTUATOR OPERATES A TIMING SWITCH, THE ELECTRIC IMPULSE ENERGIZING THE FIRST RELAY OF SAID RELAY CHAIN, AND AT LEAST ONE OF THE SUCCEEDING RELAYS HAVING MEANS FOR CREATING THE CONTROL EFFECT WHEN SAID ONE RELAY IS ENERGIZED. THE RELAYS OF THE RELAY CHAIN MAY BE ELECTROMAGNETIC RELAYS OR PHOTOELECTRIC RELAYS.
Abstract:
A milling or grinding machine for shaping a workpiece is disclosed wherein a shaping tool is displaced relative to a rotatable workpiece in accordance with coded displacement values of a series of signals stored on a perforated tape. The signals are extracted from the tape serially and are applied to computer means, which provides further signals each coded to represent a displacement value in predetermined proportionality to the displacement represented by a respective one of the extracted signals. These further signals are translated into command signals, which are applied to a stepping motor for imparting displacement to means supporting the shaping tool. The stored signals are extracted from the tape in response to output pulses derived from a frequency divider network, the input of which is connected to a pulse generator. The pulse generator is so coupled to means for rotating the workpiece as to provide a plurality of pulses for each predetermined angular displacement of the workpiece. The frequency divider network includes a plurality of successively connected frequency divider devices, each of which is manually settable to provide output pulses equal in number to the number of pulses applied to the input of the selected frequency divider device divided by the respective divider ratio to which the selected divider device is set. By adjusting the divider ratios set at the respective divider devices, the angular displacement of the workpiece is correlated with the displacement of the shaping tool in a predetermined manner.
Abstract:
A method of providing a web of packaging material with a tear strip is disclosed. The method comprises the steps of feeding such a web of packaging material along a feed path, perforating the moving web in a zone extending substantially parallel to the longitudinal edges thereof, cutting a strip from a web of tearstrip material, applying the cut strip to one surface of the web of packaging material to overlie the zone of perforation, applying suction to the respective opposite surface of the web of packaging material to retain the cut strip against said one surface, and bonding the cut strip to the web of packaging material. Advantageously, the bonding step comprises the application of heat to weld the cut strip of tear-strip material to the moving web of packaging material. Also disclosed is a device for carrying out the method. The device comprises feeder means to feed such a web of packaging material along a feed path, perforator means to perforate the moving web of packaging material in a zone substantially parallel to the longitudinal axis thereof, cutting means to cut a strip from a web of tearstrip material, applying means to apply the cut strip to one surface of the web of packaging material to overlie the zone of perforation, means for applying suction to the respective other surface of the web of packaging material to retain the cut strip against said one surface, and bonding means to bond the cut strip to the web of packaging material.
Abstract:
A cutter device for cutting continuous webs into lengths is disclosed. Two webs are guided along respective web feed paths which are mutually convergent and have a portion in common with one another. Each web feed path is provided with respective web feeder means and the web feeder means are actuatable alternately. First and second cutter means are disposed in the respective feed paths. Further cutter means is disposed in the web feed path portion common to the respective web feed paths and downstream of the respective first and second cutter means. Each of the first and second cutter means comprises a first member rotatably displaceable relatively to a second member to bring mutually cooperable knife elements of the first and second members into cooperative action. Preferably, each of the first and second cutter means is so mounted that at least one of the first and second members of each of the respective first and second cutter means is displaceable from an inoperative position to an operative position, in which the rotatable displacement causes the cooperative action between the knife elements.