Abstract: A punch for a pattern card for textile machines, for instance shedding machines or automatic knitting machines, having a step-by-step transport device and a centering device for pin wheels arranged on a shaft, for the transport of the pattern card. In order to increase the punching output and reduce the noise level, the step-by-step transport device comprises a stepping motor, and a coupling is arranged between the stepping motor and the shaft, and a centering wheel, which cooperates with a lever which simultaneously actuates the coupling, is fastened on the shaft.

Abstract: A device for preparing a beaten product and including a beater assembly driven rotatively about a generally vertical axis, with the beater assembly including a rotor body having vertically spaced upper and lower portions containing recesses, and a blade unit having upper and lower projections receivable within said recesses to connect the blade unit to the body, and with the blade unit being adapted for connection to the body by insertion of an upper one of the projections into an upper recess followed by swinging movement of the lower portion of the blade unit from a position in which a lower one of the projections is offset horizontally from a corresponding one of the recesses to a position in which the lower projection is above and can be moved downwardly into the lower recess.

Abstract: A compensator which permits the input velocity of a web conveyor system to be varied (reduced to zero if desired) while maintaining a constant output velocity and tension in the web. This is accomplished by a power actuated movable carriage having web rollers connected therewith for controllably varying the length of a multiple run web control path interposed at the input end of a belt conveyor system.

Abstract: From the centrifugal basket chamber to which the liquid-solids mixture is fed, the separated liquid discharges through an overflow outlet at the radially inner edge of an annular horizontal wall forming the upper end of said chamber, the discharging liquid then flowing upwardly along the inner surface of an annular vertical wall protruding upwardly from said horizontal wall and then flowing radially outward along the upper surface of a lip which overlies only the radially inner part of said horizontal wall in spaced relation thereto. The discharging liquid is thus prevented from contacting the upper surface of said horizontal wall and thereby imposing a drag on the rotating basket.

Abstract: A braking device for winding cores for webs of material to be unwound with varying web tension. The device includes a pressure medium actuated cylinder piston unit controlling brake shoes which act on the winding core trunnions. The cylinder-piston unit comprises at least two longitudinally aligned pistons having their axes coincident in the operating direction and abutting on each other in their rest positions. The pressure medium is applied to the pistons individually or in tandem to produce different braking forces.

Abstract: A photographic slide mounter includes a film advance mechanism which advances a photographic film web along a film track to insert the end of the film web into a photographic slide frame. The film advance mechanism includes a guide track parallel to the film track and a carriage which is movable on the guide track. A film advance pawl is connected to and movable with the carriage. The pawl engages sprocket holes in the film to advance the film as the carriage is advanced toward a first end of the film track. A drive mechanism advances the carriage toward the first end of the guide track during one portion of an operating cycle, and returns the carriage to the second end during another portion of the operating cycle. The film advance mechanism includes a breakaway mechanism for disconnecting the carriage and the drive mechanism when resistance to advancement of the carriage exceeds a predetermined amount.

Abstract: A hollow-cylindrical member, such as a reel, is releasably retained on a rotatable hub against forces tending to loosen the reel. To this end, a plurality of locking keys are inserted into corresponding axial slots in the reel at the inside thereof. These locking keys are first driven up corresponding ramps on the hub into engagement with the inside of the reel at corresponding slots. After such engagement, and during rotation of the hub and reel, the locking keys are continously biased or further urged into their corresponding slots in order to inhibit any looseness between the releasably retained reel and the rotating hub. By way of example, tape reels of large size and mass may thus be securely retained against strong inertial forces occasioned particularly during rapid reversals of the reel rotation as occurring, for instance, in modern instrumentation tape recording and data processing machines.

Abstract: Th collapsible mandrel includes a core upon which the coil is wound removably secured to a pair of spaced parallel flanges. The core includes a pair of hollow, partially semicircular members each having an arc length less than 180.degree. and a pair of transition members each disposed to fill a different one of two spaced gaps between the pair of hollow members. Each of the hollow members has a plurality of spaced grooves on the outer surface thereof substantially parallel to the pair of flanges to receive the material which is to be wound to provide the coil. A shaft is disposed coaxially of the axis of the core extending between the pair of flanges internally of the core. The shaft includes an arrangement to releasably lock the core and the pair of flanges into an integral unit when the coil is being wound. Upon completion of the winding of the coil, the shaft and the pair of flanges are unlocked and removed.

Abstract: A winding apparatus is provided for the layering of thin elongated material, especially hot-rolled wire in loop-like windings, in which a doubly or spatially curved laying tube whose longitudinal axis forms a cone-shaped rotation body and whose peripheral speed at the outlet opening matches the entrance speed of the material rotates around a rotation axis, in which case the laying tube is also curved in the peripheral direction of the superficies of the rotation body, the improvement comprising the superficides of the rotation body being curved in an essentially concave manner in accordance with a cycloid beginning at the entrance opening of the laying tube with its vertex, the length of the cycloid resulting from a half-rotation of a rolling circle generated from top to bottom of said rotation body, and that the curvature of the laying tube in the peripheral direction of the superficies is specified by a simultaneously occurring substantially half-rotation of said rotation body around its rotation axis.

Abstract: An apparatus for rolling chain link fence including an endless belt including a free loop portion and with the endless belt moved in a particular direction and with the movement of the endless belt producing rotative motion in the free loop portion, and with progressive portions of the chain link fence fed into the free loop portion and with at least the free loop portion of the endless belt supporting the progressive portions of the chain link fence to have the individual links of the chain link fence collapse against each other to provide for a tight configuration of the chain link fence within the free loop portion, and with the rotative motion of the free loop portion of the endless belt producing a rolling of the progressive portions of the chain link fence with the individual links collapsed against each other to form a roll of chain link fence with a tight configuration and a small diameter.

Abstract: Spools comprising a core or hub and two flanges concentric with the core or hub which are used to carry either unexposed photographic film for use in a camera, imaged film prior to development, or developed film for use in a viewer have different constructions in the field of microfilm because of different functional requirements for the spools. Because of the expense of shipping and inconvenience of reuse of the spool for unexposed film, the spool is generally discarded. By putting a fracturable or removable line from the outermost edge of one flange to the core, the spool for unexposed film may be converted to a spool for developed film.

Abstract: Apparatus for homogenizing a liquid, the body of the apparatus having therein an homogenization chamber within which is located a blade caused to vibrate by a jet of liquid to be homogenized impinging thereon. Magnetostrictive or piezoelectric devices are utilized to impart vibrational energy to the liquid in the chamber additional to that imparted thereto by the blade.

Abstract: Apparatus for drying sheets of photographic material has a group of parallel lower horizontal shafts and a group of parallel upper horizontal shafts which are staggered with reference to the lower shafts. All of the shafts extend transversely of the direction of travel of sheets therebetween and carry elastic rollers which engage and advance the sheets. Certain shafts carry holders for U-shaped guide members which flank the path of the sheets between the rollers on the upper and lower shafts and prevent the leaders of the sheets from curling into the spaces between the upper or lower shafts. The distance between the axes of two neighboring lower or upper shafts is at least 2D and the distance between the upper and lower guide members is less than D, wherein D is the outer diameter of a roller.

Abstract: A continuous web unwinder comprising at least one operative station for an operative reel of web that is being unwound and one reserve station for a full reel comprises a direction-changing roller for the web unwound from the operative reel that, on depletion of the operative reel, is displaceable to the reserve station where it defines a nip together with a circulating belt for introducing an adhesive-coated leading end from the full reel.

Abstract: A machine unit which is capable of functioning alternatively as a payoff and as a winder in the handling of coils of metal strip to be fed into a rolling mill (payoff mode) and to be received from the rolling mill (winder mode) comprising an expandible mandrel or block and a tandem piston and cylinder drive for adjusting the diameter of the block in accordance with its selected mode of use.

Abstract: A constant velocity universal joint includes a centering device which restricts each cardan joint to mutually equal operating angles by the use of annular involute gear teeth designed to mesh in the homokinetic plane. A boot seal simultaneously flexes and rolls as the universal joint articulates to develop a kneading action which pumps lubricant among the gear teeth.

Abstract: A twin-screw machine used for treatment of plastics in which the screw shafts are fitted with eccentrically arranged kneading discs, the clearance .delta. between the kneading discs and the inner wall of the machine housing being greater than the constant clearance s between the particular adjacent kneading discs, and the eccentricity e, which is in each case of like orientation, between the axis of rotation and the central point of the kneading disc being greater than zero and less than half the absolute value of the difference between the housing and disc diameters minus the clearance s.

Abstract: A motion-picture film cassette has a pay-out spool and a take-up spool mounted coaxially, but at opposite sides of a divider wall. Film travels in one direction through the wall from the pay-out spool to the take-up spool. An anti-reversing device is provided to prevent reverse movement of the film and/or spools; it includes an annulus of holes in the wall, surrounding the axis of the spools, and a resiliently yieldable finger projecting from that surface of the take-up spool which faces the wall. The finger ratchets over the holes when the take-up spool turns in take-up direction but engages in a respective one of the holes to block reverse movement when the take-up spool attempts to turn in the opposite direction.

Abstract: A torsional vibration damper having limit stops to limit the compression of the springs and to avoid overstraining of the springs. Spring retainers which seat on the driving and driven members have protrusions and recesses to minimize relative rubbing motion and wear and provide improved alignment of the spring seats in the assembly with the springs and the driving and driven members.

Abstract: A rotary driver feeds a web containing transverse crease lines. The driver contains circumferentially spaced edges which drivingly engage the crease lines. When the crease lines are spaced farther apart than the edges, that part of the web disposed between those edges is deflected inwardly, as by a vacuum, to bring the crease lines into engagement with the edges.