Abstract: Apparatus for guiding work through a sewing machine in which the work, as it is fed through the machine, is biased laterally into engagement with an edge guide by a vacuum-induced flow of air. The apparatus is particularly useful for guiding superposed plies of material as they are fed through the machine and aligning the edges of the plies along which they are stitched by the machine.

Abstract: Apparatus for automatically sewing workpieces along edges of each workpiece extending in different directions, in which a workpiece is automatically turned when it has been stitched along one edge for stitching it along the next edge, by blowing air on the workpiece to swing it around, using the needle of the sewing machine as a pivot, and in which workpieces are automatically entered in the sewing machine for being stitched and automatically removed after they have been stitched.

Abstract: Methods of manufacturing pants from heat-settable textile material, with molding of the material for a good fit, in which two flat tubes of such material are assembled, seamed to form a crotch seam, applied to a mold shaped to impart appropriate form to the tubes for a better fit, and heated to set the tubes in the form of the mold; and the molds used in carrying out said methods. According to a first embodiment, the material in the crotch section of the tubes is left intact until after molding, being then cut out. According to a second embodiment, the material in the crotch section of the tubes is cut out before molding.

Abstract: A paddle handle lock bolt includes a bellcrank retractor or trigger member which constitutes the central element of a three element drive train comprising a paddle handle, the bellcrank retractor, and a spring-loaded slide bolt. The bellcrank retractor can be selectively coupled to the paddle handle for selectively drivingly engaging the spring-loaded slide bolt in the retracting direction.

Abstract: An arc furnace which is supplied by means of alternating current by way of heavy-current conductors, with liftable electrode carrier arms, wherein the heavy-current conductors can be separated from each other by means of releasable electrical couplings.

Abstract: A roller-coaster track includes a vertical loop and terminates in two steep rises, with a loading and unloading station disposed along a horizontal stretch of track between the loop and the lower of the two rises. An endless belt underneath that horizontal stretch entrains a carriage which, when moving along an upper run of that belt, accelerates a passenger train at the station from standstill to a velocity sufficient to let that train pass through the loop in one direction, ascend the higher rise, descend that rise and pass once more through the loop in the opposite direction before ascending and descending the lower rise, eventually coming to rest at the station. The accelerating force is derived, at the start of the ride, from stored potential or kinetic energy such as that of a weight dropping inside a guide tube or a flywheel intermittently coupled with the belt.

Abstract: A brake disc connection, especially for rail vehicles, in which the undivided brake ring or the brake ring divided along a radial or axial plane is by a clamping connection which includes a clamping groove and clamping strip clamped therein connected to the hub or wheel. The hub or the wheel as well as the brake ring are each provided with two clamping surfaces defining the clamping groove. These clamping surfaces are in alignment with each other in radial and/or axis parallel direction, and the clamping strip extends into both clamping grooves while being clamped thereinto; at least three pairs of clamping surfaces being provided for each brake ring, so that at least three of the above mentioned connections are provided for each brake ring.

Abstract: A safety belt fastening in which the male member includes an enlarged head for laterally pivoting a spring biased locking member operating in a recess of at least one of two plates joined to form the female member of the fastening. The locking member moves to a position aligned substantially with the insertion movement of the head until the head passes. A guide surface including a pin in the female member laterally displaces the male member at an incline to cause pivotal rotation of the locking member during insertion, thereby effecting a force economy compared with that effected by a straight in insertion. When the locking member rotates, it pivots about its rear face in conjunction with an oppositely aligned recess face in a bearing-like action, at least one of these faces being convex. Preferably, the rear face of the locking member is made of drawn steel. The locking member is manually rotatable for release. An injector spring separates the male and female members at the time of release.

Abstract: Melting furnace, especially an arc melting furnace, in which the furnace wall contains at least one water cooling box welded of steel plate and disposed above the melt level, whose surface facing the furnace interior is provided with projections which facilitate the adhesion of a refractory protective layer formed on this surface, wherein the wall of the water cooling box, which faces the furnace interior, has a thickness of at least 15 mm, the projections are formed of profile irons, and a refractory composition applied beforehand serves as the refractory protective layer.

Abstract: Methods of manufacturing pants from heat-settable textile material, with molding of the material for a good fit, in which two flat tubes of such material are assembled, seamed to form a crotch seam, applied to a mold shaped to impart appropriate form to the tubes for a better fit, and heated to set the tubes in the form of the mold; and the molds used in carrying out said methods. According to a first embodiment, the material in the crotch section of the tubes is left intact until after molding, being then cut out. According to a second embodiment, the material in the crotch section of the tubes is cut out before molding.

Abstract: A lead vehicle is hitched to a semitrailer-type follower vehicle by a universal coupling including a pair of generally horizontal arms, rigid with the respective vehicle bodies, which terminate in interfitted knuckles with part-spherical surfaces. The outer knuckle forms a pair of prongs firmly embraced by inner wall surfaces of a surrounding split housing whose halves, meeting in a vertical plane, are interconnected by a bolt carrying a spherically convex boss supporting the inner knuckle. The vehicles ride on a track transverse to the bolt axis, two sets of wheels of the lead vehicle being mounted on a pair of wheel mountings that are swingable about that axis and have extensions forming the housing.

Abstract: A brake disc with improved ventilation cooling means, comprising a brake ring, the interior of which is provided with radially running channels formed by vanes. Cooling air to be conveyed by the vanes enters the channels on the hub side at the inner circumference of the brake ring and exits at the outer circumference of the brake ring. In addition to rib-shaped vanes, the length of which correspond to the entire width of the brake ring, thermal flow vanes are provided. To increase the air turbulence, the width of the base of the thermal flow vanes is more than 60% of the distance from the start of one vane to the start of the next vane, measured along the braking radius, and the width of the base of the thermal flow vanes is between 80 and 100% of the distance between vanes, measured at the inner circumference of the brake ring.

Abstract: A method of producing bearing pulleys for conveyer belts and roller gravity conveyers in which the bearing pulley includes a cylindrical portion and common central pivot pins secured to the cylindrical portion by a hub or roller base, which comprises providing a cylindrical pipe of a desired bearing pulley diameter, tapering the end portions of said pipe in a truncated configuration by non-cutting cold deformation down to the diameter of the pivot pins, and subsequently inverting the tapered end portions of the pipe centrally within the cylindrical portion of the pipe a distance sufficient to provide the desired spacing between the ends of the pulley.

Abstract: An apparatus for transferring coke in measured quantities from an inclined wharf on to a horizontal conveyor, which comprises a roll being provided with a circumferential shell enclosing a chamber with a peripheral aperture. The peripheral apeture extends straight or helically over the entire length of the roll. The helical peripheral aperture extends only over a zone of about 270.degree..

Abstract: Apparatus for joining together two plies of material such as textile fabric comprising a sewing machine, contour guide means for shifting the plies as they are fed forward through the sewing machine to effect contour seaming of the plies, and a feed control clamp for clamping the trailing ends of the plies as they are fed forward. This clamp, clamped on the trailing ends of the plies, moves forward with the plies as they are fed forward. It is also automatically shifted from side to side as it moves forward to maintain the edge of the plies being sewn aligned with the contour guide means. The apparatus further comprises loading means which is adapted, while a pair of plies is being sewn, to receive the next pair to be sewn and, upon completion of sewing the first pair, to enter the next pair in the sewing machine and in the feed control clamp.

Abstract: A disc brake construction, especially for rail vehicles, in which a bogie having at least one axle rotatable therein is provided with brake discs on the inner sides of the wheels on the axle. The disc brake construction embodies a brake shoe adjacent each disc, each of which is pivotally supported on a lever pivotally supported on the bogie. Brake actuating mechanism extending transversely of the bogie is operatively connected to and supported by the levers for actuating the levers to cause the shoes to engage the respective discs. A mechanical device can also be operatively connected to the levers for mechanically actuating the brakes. The entire brake structure, other than the discs on the respective wheels, is supported by the bogie on which the wheel axle, or axles, rotates.

Abstract: A shock absorber for use in elevators comprising a hollow piston rod connected to a piston which is movable within a cylinder filled with a fluid and having apertures in the cylinder wall for communication with a surrounding cylindrical expansion chamber and means for providing fluid communication with the interior of said piston rod. The hollow piston is forced into the cylinder during operation of the shock absorber thereby forcing fluid into both the cylindrical expansion chamber and the interior of the piston rod.

Abstract: A device for controlling the return of the coupling head for central couplings to their central position, especially for use in connection with rail vehicles, in which the coupling head is by means of a coupling rod linked to a housing arranged on a vehicle. A cam operatively connected to the coupling rod extends between two abutments which in the horizontal path of the cam are displaceable hydraulically, electrically or pneumatically. In one end position of the abutments, the full horizontal lateral deviation of the coupling rod is available, whereas in the other end position, the cam is clamped in between the two abutments.

Abstract: A rail vehicle wheel with brake discs, especially for disc brakes, according to which the brake discs, which may be or may not be divided, are arranged on one or both sides of the wheel. That side of the brake discs which faces toward the wheel disc is provided with radially extending cooling fins and by way of cam rests against the wheel disc. The outer and/or inner circumference of the brake discs is or are respectively engaged by preloaded elastic deformable holding members which in their turn are positively or frictionally connected to the wheel.

Abstract: A closure for a brake jaw holder for disc brakes, especially for use in connection with rail vehicles, in which a closure latch extends in a direction transverse to the guiding direction of the brake lining and in which the lining in a closing manner extends from the rear side of the lining carrier into an opening provided therein. At both sides of the opening in the closure latch there is provided an oblong opening extending perpendicularly with regard to the surface of the lining carrier while the pertaining bolt or pin is arranged on the lining carrier. Elastic spring structure is provided for arresting the closure latch when the bolt or pin occupies either one of its end positions in the oblong opening.