A guillotine type cutting machine wherein the length of cuts to be made in stacks of sheets determines the force with which a hold-down device bears upon a stack in the course of the cutting operation to prevent stray movements of the sheets. The force varies as a function of the length of the contemplated cuts and is regulated in such a way that the pressure of the hold-down device per unit area ...

A method of operating a multiple-electromagnet arrangement (eg for a fuel-injection valve) is proposed in which, to shift the armature(s) from one position to another, exclusively switch-off operations of the electromagnet(s) are used. In a device for implementing the method, circuit elements (106, 105; Figs. 6; 7) are provided which produce a current-fall time shorter than the current-rise time o...

A rotary plate-shape material cutting apparatus is disclosed. The apparatus comprises a pair of hollow knife cylinders, each provided with a knife on the circumferential surface and adapted to rotate in mutually opposite directions, shafts piercing the hollow portion of the knife cylinders and having both ends thereof supported by frames, bearings positioned at both ends of the knife cylinders and...

The method and apparatus may be used for copying a reference winding in order to produce a production winding similar to a reference winding. With regard to making spools of sewing thread, the production winding may have the same length of thread and winding cross-section as the reference winding. Alternatively, the main aim may be to make production windings having the same cross-section as the r...

An improved method and apparatus for a winder for anchoring an indefinite length of thread supplied from a supply source onto an anchoring disc in said winder. The method comprises the steps of offsetting the thread to a position facing the anchoring disc, spanning the thread vertically, arresting the spanned thread, protruding the thread outwardly from the disc, and displacing the thread slantly ...

The invention relates to an improved method and apparatus for forming metallized iron by direct reduction of particulate iron oxide. The spent reduction gas is recycled from the reduction furnace (10) through a cooler- scrubber (34) and a catalytic gas reformer (38). In the cooler scrubber (34), the spent reducing gas interacts with scrub water. Dust having an affinity for sulfur is recovered from...

The invention relates to an X-ray examination unit with a column (8) carrying an X-ray system which can be displaced in parallel rails (10) on the floor and on the ceiling of the examination room. The floor rail (10) is a hollow profile open at the top in which wheels (17) of a carriage (16) arranged on the bottom part of the column (8) are guided. The open upper side of the rail (10) is covered b...

Gas is produced in a ferrous bath reactor 20 containing an iron melt 21 by feeding solid or liquid carbonaceous fuel (e.g. coal) 24 into the reactor 20, and blowing an oxygen-containing gas from nozzles 26,27 onto the surface 22 of the melt to gasify the fuel. The gas is collected in a space 30 through which the gas from the nozzles 26,27 is blown. In traversing the gas space 30, the gas from the ...

An improved intraintestinal bypass graft (1) for attachment in the lumen of a resectioned intestine or duct upstream of the anastomosis site in order to protect the healing anastomosis comprises an elongated tube (3) formed of a thin, highly flexible, water-impervious wall material terminating at its distal end (7) in a short, reduced diameter nipple (11). The surgical procedure for implanting the...

A liquid absorbing pad, in particular for use in hygiene articles and sanitary products, such as diapers, bed pads, sanitary napkins, pads for incontinence, panty shields, nursing pads or the like, is produced in a dry and direct process on the basis of wet-strength and/or coated paper waste, especially originating from the production of food packages, milk carton packages, deep-freeze packages, d...

A suspension umbrella has a crown connected to a holder by means of a ball joint. For arresting the ball joint in different positions the ball joint is equipped with an arresting body which is actuatable by means of a screw spindle arranged coaxially to the umbrella axis. A securing device includes a securing screw which is threaded into the crown through a bore in a sleeve in order to prevent rel...

A control system for enabling a conveyor cart or carts to run automatically along a running track. The or each cart comprises a sensor for detecting a guiding line extending along the running track and outputting detection data, and a steering control device operable in response to the detection data for steering the conveyor cart to follow the guiding line. The sensor is switchable for selectivel...

To effect shelling of crustaceans surface heated crustaceans are shot against a water covered deflector plate in a vacuum chamber, whereby a practically complete deshelling is obtainable without any recirculation. The crustaceans are shot against the deflector plate in very thin flows through periodically operating inlet valves, whereby each single crustaceans will hit the deflector plate and be e...

A safety binding for a ski boot comprising coupling means extending under the boot, and associated therewith, for coupling the boot to retention means mounted upon the ski; the retention means are hinged about a pivot integral with the ski. Safety-releasable locking means make it possible to lock the coupling means in relation to the ski, when the ski is fitted to the boot. A design of this kind m...

An illumination device permitting microscopes, for use of the microscope as a fluorescence microscope, comprises a light-screening tube (2, 4) preferably of variable length, one end of the tube being connectible to the microscope objective and the other end being disposed to surround the sample which is intended for microscopic observation on the sample stage (1) of the microscope. An opening in t...

Films from aromatic polyesters and from aromatic polyestercarbonates are excellently suitable as electrically insulating films, for example as dielectric for capacitors and as conductor track films.

An automatic railless ground conveyor installation incorporating a passive guide track determining the route network and individual driverless or unmanned traveling conveyor cars, each of which possesses a steering mechanism which scans in a contactless manner the guide track and a work control mechanism. The work control mechanism, by means of a code reader, scans in a contactless manner individu...

A method and apparatus for retreading a tire includes a mold segment (14) having open ends (16) and (18). A tire carcass (10) has a layer of uncured rubber (12) built up on the surface thereof. The mold (14) is disposed therearound with ribs (20) resting on the surface thereof. A semi-flexible cap (24) is disposed over the ends (16) and (18) which are separated by a gap (20). An elastic strap (26)...

To effect shelling of crustaceans surface heated crustaceans are shot against a water covered deflector plate in a vacuum chamber, whereby a practically complete deshelling is obtainable without any recirculation. The crustaceans are shot against the deflector plate in very thin flows through periodically operating inlet valves, whereby each single crustaceans will hit the deflector plate and be e...