Abstract:
An infrared radiator comprises a light weight container such as a cylinder which is filled with a pyrotechnic material capable of emitting radiation energy immediately after ignition and without noticeable gas development. The cylinder is closed at one end by a metal plate such as a thin steel disc having very little heat capacity of its own and having an exposed surface providing a radiation surface or emitting surface and an opposite surface facing toward the interior of the container which is in direct heat contact with the pyrotechnic radiator.
Abstract:
In a method for forming a sheet from a fiber-water suspension, the fiber-water suspension is supplied on a traveling bottom wire at a first zone thereof to dewater the fiber-water suspension. Subsequently, the suspension is introduced between the bottom wire at a second zone and a top wire, and dewatering is effected. The sheet is further caused to travel around a sheet-forming roll while keeping the sheet in contact therewith by the bottom wire at a third zone thereof, and reformation of the sheet is carried out. Finally, the sheet on the bottom wire is caused to travel up to a fourth zone thereof to effect a further dewatering with a fourth dewatering device disposed adjacent to the bottom wire at the fourth zone thereof, whereby a final stage of sheet formation is carried out. An apparatus for carrying out the above method is also disclosed.
Abstract:
A PRESS SECTION OF A PAPER MACHINE INCLUDES A SUCTION PRESS ROLL SUPPORTED WITHIN AN ENDLESS FELT BY AN INNER FRAME HAVING ONE SIDE PIVOTALLY CONNECTED TO A MAIN OUTER FRAME AND THE OPPOSITE SIDE RELEASABLY SECURED TO THE OUTER FRAME SO THAT THE INNER FRAME MAY BE PIVOTED BY A POWER OPERATED JACK TO PROVIDE FOR CONVENIENT REPLACE-
MENT OF THE FELT. THE PRESS SECTION ALSO INCLUDES A SUCTION PICKUP ROLL SUPPORTED WITHIN THE PICKUP FELT IN A SIMILAR MANNER.
Abstract:
The invention relates to a method for removing and installing rolls (2) in a paper machine or the like substantially in the longitudinal direction of the rolls. In the method, an auxiliary displacing means (3) is supported to a substantially horizontal support structure of the paper machine or the like above the roll (2) to be displaced, the auxiliary displacing means being mounted to move along the support structure; one end of the roll (2) to be displaced is fixed to the auxiliary displacing means (3) so as to be suspended from it, and the other end of the roll is supported by a displacing device; and the roll (2) is then moved by the displacing device substantially in the direction of the longitudinal axis of the roll so that the auxiliary displacing means (3) fixed to one end of the roll moves along the support structure (1) while the roll to be displaced moves with it.
Abstract:
A twin wire paper machine having structure for controlling the common path taken by the wire. A web-carrying wire and a web-pressing wire having a common path extending upwardly from a lower forming roll to an upper couch roll with the web which is formed being compressed between these wires while they travel along this common path, the web-carrying wire continuing to transport the web beyond the common path of the two wires. The forming and couch rolls define between themselves a space situated on one side of a straight line which is tangent to both of these rolls and which contacts the common path of the wires at the regions of these rolls. A wire deflecting roll structure is situated along the common path of the wires between the forming and couch rolls and is situated at least in part in the above space between the forming and couch rolls at the above side of the line tangent to these rolls, so that the wires while traveling along their common path are deflected also to the above side of the above tangent line into the space between the above rolls, whereby the extent to which the wires lap the forming and couch rolls is increased.
Abstract:
A paper machine having upper and lower wires and wherein an adjusting structure cooperates with a portion of at least one of these wires to move this wire portion close enough to a cooperating portion of the other wire to achieve a twin-wire operation and to move the adjustable wire portion away from the cooperating wire portion to achieve at the latter a single-wire operation, so that at least in part the wires are adjustable one with respect to the other to provide for the option of operating the machine, at least in part, as a single-wire machine or as a twin-wire machine.
Abstract:
A method and apparatus for removing particles, such as dust, generated by a moving web is disclosed. A dust control platform is positioned adjacent to a traversing web to catch the particles generated by the web. The particles pass through one or more apertures defined by an accumulation surface. The particles pass through the accumulation surface and into an accumulation chamber. The accumulation chamber may include a sweeping device or other device that may be used to transfer the accumulated particles to a collection chamber. The collection chamber is connected to a vacuum source. Vacuum is applied to the collection chamber by the vacuum source such that the particles are removed from the collection chamber.
Abstract:
An apparatus for adjusting a scraper bar in a line for producing a paper web, having a wire, assigned to which are scraper bars oriented transversely to its direction of movement and situated at a distance from one another. The scraper bar is supported by a support bar and is adjustable with respect to the support bar and with respect to the wire by means of a positioning device. The scraper bar and the support bar are coupled together by way of links that are mounted thereon. The distance or the angular position of the scraper bar with respect to the support bar and thus with respect to the wire is adjustable by a displacement of the scraper bar with respect to the support bar.
Abstract:
A self-aligning fabric loading harness for installing a fabric body having a leading edge and a plurality of spaced empty grommets disposed proximate to the leading edge onto a papermaking machine, the harness including a line receiving device, having an aperture, spaced from the leading edge; and a line, having first and second ends, being successively and slidably laced through the line receiving device aperture and the aperture of each empty grommet, the first and second ends of the line being separately secured, and a method for installing a fabric body using that harness. The harness and method being particularly useful for installing dryer fabrics onto paper machines.