Abstract: A method and apparatus for controlling the speed of a traveling web being driven along a path by means of first and second drive rollers located at spaced positions along the path. An emitter device is provided for directing a radiation signal at the traveling web at a predetermined location along the path between the first and second drive rollers so as to be reflected thereby, and a detector device is provided for detecting the reflected radiation signal and for generating a position indication signal indicative of the position of the detector relative to the traveling web at the predetermined location. In response to the position indication signal, the detector device is caused to move so as to maintain a predetermined position with respect to the traveling web at the predetermined location.

Abstract: An arrangement for aligning a cross line of a material web moving in a given direction along a bearing surface, particularly a veneer web of veneer sheets, with a set position, includes a monitor for monitoring the position of a cross line and detecting a deviation of the cross line from a set position, a retaining mechanism for restraining movement of a leading side of the material web relative to a trailing side of the material web in the direction of movement, the monitor being operable to actuate the retaining mechanism associated with the leading side to restrain the leading side relative to the trailing side until the actual position of the cross line coincides with a set position.

Abstract: A roll of film is formed without a spool or core and the innermost end of the roll of film is formed into a closed loop of predetermined diameter. In a film viewing device, in which film is normally transported from a supply shaft to a take-up shaft, the supply shaft is provided with an adaptor which is mounted thereon for rotation therewith and is resiliently biased to be radially expandable from a diameter smaller than to a diameter larger than the predefined diameter. The roll film structure is mounted on the adaptor and the resilient biasing of the adaptor then forces it radially outward against the closed loop and securely holds the roll film for take-up.

Abstract: A rotary power transfer component incorporated in the rotary to reciprocating motion conversion drive mechanism which operates the reciprocating feeder of a multiple slide machine increases the time available to the forming operation by correspondingly decreasing the feed time of the wire or ribbon stock during each cycle. The rotary power transfer component comprises a drive wheel and crank wheel mounted for respective eccentric rotation. The drive wheel, which is driven at a uniform rate of rotation synchronized to the forming operation of the machine, has an eccentric fixed pin which engages a radial slot in the crank wheel to thereby impart to the latter a synchronized cycle with varying speed of rotation within the cycle to be converted to a rapid advance feed stroke and a slow return stroke for the reciprocating drive of the feeder during which return stroke the forming operations are performed.

Abstract: Device for the automatic rewinding of material delivered in sheets in heliographic and similar machines, particularly for heliographic machines for textile industries, comprising a winding member consisting of a hollow cylindrical casing with a C-shaped cross section, within which is rotatably mounted a shaft equipped with a plurality of radial tabs arranged at regular intervals along its entire length.The outer edge of the hollow casing and the tabs define a slot into which the leading edge of the sheet to be rewound around the hollow casing is initially inserted. The rotation of the shaft first causes the leading edge of the sheet to remain firmly gripped between the tabs and the edge of the hollow casing, and then pulls the hollow casing round, thus making the sheet of material wind around the latter.

Abstract: A method for the preparation of drilling mud wherein solid and liquid phases of drilling mud are mixed in a vessel (2) to obtain a homogeneous suspension. After the mixing the drilling mud is caused to pass under pressure through apertures (5 or 6) provided in a stirring member (3 or 4) of a piston type, the apertures being of a diameter which is greater than maximum size of an individual solid phase particle but smaller than the diameter of aggregates of particles, to prepare dispersed drilling mud.

Abstract: A web winding device of simple construction in which webs are successively attached to and wound on cores and in which the web winding width can be easily changed. A first web winding and product discharging station, a core supplying and web attaching station, and a second web winding and product discharging station are arranged in the stated order in a stationary frame. A winding unit having two web winding mechanisms coupled as a single unit extending in a longitudinal direction of the web is mounted on rails atop the stationary frame and is reciprocal therealong over the three stations. Each web winding device holds cores for the various web segments to be wound and motors for turning the cores and for adjusting the winding width.

Abstract: An unwinding machine for adhesive tapes comprising a frame on which two tape reels are mounted and successively unwound by independent driving means outside the machine. Each of the reels is associated with a driven launching roller and the launching roller is displaced away from the tape being unwound from the operative roller whereas the launching roller associated with the spare reel which is at rest, is operated to engage the end of the tape therefrom to unwind the tape and bring the spare reel up to speed when the tape on the operative reel is approaching the end thereof. First and second rollers are provided for each reel adjacent the path of the tape from the respective reel to the location outside the machine, the rollers defining two opposed straight travel sections for the tape.

Abstract: The invention relates to the driving of rollers of roller cavity suction apparatus for conveying or braking material webs whereby the motors for driving at least one of the rollers receive the power output from the pressure drop between the front and reverse side of the web.

Abstract: The invention relates to an apparatus for deflecting a web of material moving in its longitudinal direction, both into a plane situated at right angles to the surface of the web and into a plane situated in the surface of the web, whereby a supporting element provided for the web during its deflection is an endless flat belt which the web mounts before it is deflected and which the web leaves after its deflection and cylindrical rollers and deflecting bodies in the form of tube and/or tube segments having supporting means on their circumferential surface are provided which guide the endless belt to deflect the web and subsequently return the belt to the point where the web mounts the belt.

Abstract: An apparatus for kneading particulate to granular materials comprising a container in the form of a bottomed hollow cylinder, a vertical shaft disposed in the center of interior of the container and rotatable by a motor assembly, pivotal arms mounted on the vertical shaft and turnable only upward and downward, agitating rolls rotatably supported by the pivotal arms each at one end of the arm and each having a recessed outer peripheral pressing surface, and pressure adjusting assemblies each provided between the vertical shaft and the other end of each of the pivotal arms, the pressure adjusting assembly comprising a cylinder member, a rod and means housed in the cylinder member for biasing the rod in directions opposite to each other.

Abstract: An auxiliary device on devices for winding a weblike material into rolls, the quality of winding being distinctly improved, and a process for winding weblike material into rolls. In addition to the known first contact (feed) roll, the device also has a second, soft-surface contact roll the pressure of application of which can be precisely adjusted. The pressure of application of the second contact roll is transmitted by a pneumatic cylinder or a pneumatic pressure control valve, lever arms. As the diameter of the roll increases, the movement of the contact roll or the lever arms is used to generate a pulse via a contact device, so that the position of the first contact roll in relation to the roll being formed, i.e., the gap is kept constant by way of an auxiliary drive.The device and the process according to invention are particularly well suited for winding pressure-sensitive web materials into rolls.

Abstract: A control system for a slitter-rewinder apparatus which forms a web of material into a plurality of individual rolls, the web being unwound from around a supply core and slit into strips which are rewound about a plurality of individual product cores. The slitter-rewinder apparatus has at least one takeup roller adapted to slidably receive the product cores there about. The supply core and the takeup roller are rotatably supported in spaced apart relationship with a portion of the web extending therebetween, around at least one idler roller and past a plurality of knives which cut the web into strips. The slitter-rewinder apparatus further has a first controllable motor for rotating the takeup roller and a second controllable motor for rotating the supply core. The control system includes a sensor for detecting the rotational speed of the product cores.

Abstract: A paper feed apparatus for a business machine having endless forms feeding mechanism and sheet feeding mechanism incorporates lever means operable to disable the sheet feeding mechanism through movement of the sheet feed friction roll shaft about one of its ends thereby to separate the feed roll from engagement with a platen.

Abstract: An air-controlled differential rewind mandrel for simultaneously winding multiples of web material (slit strips) mounted onto cores in rewind machines having two or more rewind mandrels, means for providing constant torque to each rewind roll formed by the individual slit strips, core engaging shoes formed in arcuate segments positioned around the mandrel, the segments being formed with elongated arcuate outer surfaces having extended purchase contact with the tape winding cores for a substantial part, such as 180 degrees, per rotation of the mandrel, with the inner surfaces of the cores, each shoe being differentially movable relatively to the others as required by tension conditions encountered, and in any desired numerical groupings, and adjustable positional means engageable with the shoes, obviating the necessity for complex adjustment and down time heretofore required to conform to the positions of cores of different widths on the mandrel, and various torque requirements encountered in practise.

Abstract: A hub for magnetic tape having a recess formed in the peripheral part of the hub and a magnetic-tape clamp to be fitted into the recess comprises an upper rib having an outer surface with the same curvature as that of the hub; legs formed at both ends of the upper rib; projections extending outward from the legs to be fitted into the side wall grooves of the recess; and lower ribs extending inward from the legs to terminate in the vicinity of a convex portion formed in the central part of the recess bottom.

Abstract: A flangeless winding core for magnetic tape, adapted for stacking between like winding cores, has an annular body with parallel top and bottom annular surfaces, an outer circumferential surface around which the tape is wound, and an inner circumferential surface from which a plurality of angularly spaced lugs extend radially inward, the inner ends of which are curved to define a discontinuous inner circumferential core surface. The lugs have the shape of a sector of an annulus, are spaced from each other by a like number of similarly shaped gaps, and project equally above the top and bottom surfaces of the annular body a distance greater than one-half the axial dimension of the annular body.

Abstract: Method and apparatus for controlling tension in a longitudinally moving web between fixed material feeding points while maintaining the length of the path of web movement between said fixed points substantially constant. Two axially fixed, web-feeding rollers are positively driven from a common drive motor. One roller is driven at a variable speed through a shaft-mounted transmission unit having a variable pitch pulley spaced from the axis of rotation of the roller shaft and connected to the motor by a flexible belt. Fluid piston means provides a constant force on the transmission unit in a direction about the roller shaft axis to impose a constant torque on the variable speed roller and to move the variable pitch pulley to increase or decrease the speed of the roller, thereby maintaining a constant imposed tension on the material in its path of movement between the two rollers.

Abstract: A dispenser to accommodate source and reserve rolls of flexible sheet material has a housing provided with inwardly facing tracks on the opposite inner side walls thereof and guide means associated with each track adjacent the lower end thereof to drivingly assist the source roll dispensing action with a reserve roll segregating device cooperating between the guide means and the reserve roll to both hold the reserve roll away from the dispensing position of the source roll and urge the guide means to brake against over-spin of the source roll incident withdrawal of sheet material therefrom.

Abstract: An interfacial surface generator for mixing fluids is disclosed that has a plurality of mixing elements positioned in a tubular housing in end-to-end relationship. Each element has a cavity on its upstream end and a protuberance on the downstream end. The protuberance on each element extends into the cavity of the adjacent element to form a narrow annular passageway between the side of the protuberance and the wall of the cavity and a narrow space between the end of the protuberance and the bottom of the cavity. Each element also has a central blind-end passageway that connects the space between the end of the protuberance and the bottom of the cavity with a plurality of radially extending passageways that connect the central passageway to the annular space between the protuberance and the wall of the cavity. The fluids being mixed flow together through the central passageway.