Abstract: A gear train comprises a central wheel for rotation about a central axis and a plurality of pinions engaged with either inner or out circumferential teeth of the central wheel. The pinions are mounted on shafts and have teeth which are meshed with the teeth of the central wheel. A relative position of the pinion and central wheel teeth is influenced through external adjusting forces applied to the wheel and pinions. To this end, the pinions are mounted in active magnetic bearings whose magnetic force is controlled through sensors which sense the radial position of the central wheel. In this way, the radial position of the pinion shafts can be controlled using the magnetic bearings and as a function of the radial position of the circumference of the central wheel to maintain a desired spacing between the wheel and pinion teeth. This control can be used to compensate for centrifugal and thermal expansion or contraction forces.

Abstract: A frying pan has a bottom surface with an outwardly protruding central, planer and circular masses area which is made for contact with an electrically heated plate. There is also a wing-shaped bottom portion on each side of the contact area. The wing-shaped portions have a periphery which account for 30-80% of the total periphery of the frying pan bottom.

Abstract: A floating dock comprises a base portion forming a floating pontoon and side portions made up of closed side boxes or tanks located on each side of said base and including detachable buoyancy boxes carried on the exterior of said side portions.

Abstract: A process for accelerating an antigen-antibody reaction by adding accelerator(s) such as dextran or alkylene glycol(s) and/or a polyalkylene glycol(s) to the reaction liquor of the antigen-antibody reaction.

Abstract: A method and apparatus is provided for separating flat objects such as mail. A control circuit compares the spacing between successive flat objects with a preferred preselected spacing and if these is a difference the control circuit changes the drive apparatus so the actual spacing between flat objects is the preferred spacing.

Abstract: The invention relates to a readjustment device on coking oven batteries with linkages, disposed in a master gallery so as to be movable in the longitudinal direction of the battery, for the actuation of shutoff members on the individual ovens of the coking oven battery. The linkages, to be moved simultaneously and oppositely in the master gallery, are joined to each other at one end of the coking oven battery through a guide pulley and this guide pulley is provided with pulley segments having different radii to obtain different strokes at the linkages.

Abstract: A cryogenic pump with a two stages refrigerator, an access grid and condensation walls partially coated by adsorbing material and thermally connected to the second stage of the cryogenic generator, which walls are formed by one or more metallic strips so shaped as to slant considerably in respect to the axis of the cylindrical shield and completely covered by an adsorbing material on both faces; said walls are protected by shielding surfaces at least outside reflecting.

Abstract: A feed mechanism for a sewing machine with a material feed dog includes a support for a feed dog which is attached thereto and which is slidably mounted on a feed link and is connected with a drive for its transverse motion that is controlled independently of the main shaft. To effect a low inertia drive, the drive includes a link mounted on a pin firmly fixed to the housing. The link has a bearing drive piece eccentrically positioned with respect to the pin and in drive-contact with the feed dog support. The drive piece comprises an eccentric that surrounds the pin and abuts against a side surface of the support, thus providing a simple drive mechanism. In order to ensure low-friction transmission, the side surface of the support which is in contact with the eccentric is constituted by an abutment piece and in addition, transmission is accomplished via a roller bearing surrounding the eccentric.

Abstract: A diffusion sample collector for gaseous media, consisting of a transparent container open at both ends, which contains a collecting layer and has at its two open ends permeable retaining elements. The collector is improved in such a manner that the presence of hazardous substances in the surrounding air to be analyzed can be recognized during the collecting of the samples in order that an unnecessary analysis of the collecting layer can be prevented in the absence of hazardous substances and also gas eruptions can be noticed immediately. For this latter purpose, an additional layer is provided in the container, which is separated from the collecting layer by a dividing wall and is in contact with the gas to be analyzed through the opposite end and its retaining element.

Abstract: A singling apparatus for letters, vouchers, receipts, checks, punched cards, or other main items of all kinds up to a given size and thickness, singles out the items arriving in any irregular sequence one below the other, unarranged and oriented on a longitudinal or transverse edge. To obtain a high singling output and draw-off quality, the items are transported in vertical position through a transport mechanism and, by using a restricting guiding unit, into the draw-off region of a draw-off belt revolving about deflection bodies tangentially toward the draw-off belt surface. In the contact zone of draw-off belt and one deflection body the inflowing mail items are pressed against the draw-off belt and only the items coming into contact with the draw-off belt directly are drawn off by friction, by deflection of these items around the deflection body.

Abstract: A lockstitch sewing machine includes a rotary hook. For the rotation secure retention of the bobbin housing of the hook, two cams are arranged in the central region of the loop cast-off side, which receive a spring rod between them. A shoulder formed at the bobbin housing is associated with the cam or with the spring rod. Through the special position of the cams, the movement resistances during the guiding of the needle thread loop around the bobbin housing is reduced to a minimum.

Abstract: A heat exchanger unit comprises a support on which is positioned a plurality of stays mounted at spaced locations. A horizontally extending bracket is secured to each of the stays and a plurality of connected heat exchanger plates are suspended from their upper ends from the brackets. The plates have heat media carrying channels which are joined together. The support advantageously comprises a steel ring to which the brackets are attached and which extend radially inwardly also radially outwardly. The heat exchanger plates are rectangularly shaped and are suspended from each bracket so that it hangs freely downwardly. Wire guards extend between the plates to prevent them from deflecting and contacting each other. The construction permits the elimination of spaced support elements which interfere with free heat exchange flow between the plates.

Abstract: The present invention relates to a method for sawing a tree trunk and for treating a slice of wood of uniform thickness sawn off the trunk. In the first method, the trunk dimensions and shape as well as the biological quality of each section of the trunk both in the lengthwise and the crosswise direction are defined along with the sawing process, and this information is taken into account while treating the trunk. This method is characterized in that the production programme, which comprises various articles, i.e. product components, of different measures and qualities, is recorded (a) before the actual sawing process. The trunk is sawn into two halves in the middle (b), or the heart slice is removed therefrom (i). The longitudinal quality borders of each trunk half are defined on the basis of the sawn face and recorded (c), and further the shape and size of the trunk half are measured and recorded (d). The quality information and the measuring results are combined (e).

Abstract: A master cylinder assembly of the type that a current quantity of operating fluid in the interior of a reservoir is detected by function of a float means, wherein the float means has an extension extending with its center of buoyancy disposed near the center line of the reservoir.

Abstract: The sealing surfaces of a coke oven door are cleaned with high-pressure fluid by a hydraulically operated high-pressure piston pump which displaces either a hot or a cool conveyed media ladened with solid particles such as a coal mass and a fluid for cleansing the sealing surfaces of the coke oven doors and door frames. The pump includes a closed pump cylinder having an inlet and outlet valve for a conveyed medium at both ends of the cylinder and a partition dividing the cylinder. Inlet and outlet valves for hydraulic fluid are located in the cylinder on each side of the partition. An inner double piston is axially movable to and fro with the cylinder and comprises two output piston portions with a piston rod connected to each portion and located between them guided on bearings in the cylinder. A delivery space is formed between the piston portions and each end of the pump cylinder and the respective delivery spaces at each end simultaneously and oppositely decrease and increase during an operation.

Abstract: A skin holding device on an apparatus for letting out skins is driven by drive devices to follow the treatment and feed tools acting on the skin, so that the skin zone received in the skin holding device is moved synchronously with the skin zone gripped by the treatment and feed tools. In this way a skin, when being let out, can neither be distorted nor can it deviate from its initial angular alignment.

Abstract: This invention relates to an axial piston system hydraulic pump or motor capable of being changed over by two stages and particularly preferably used as the hydraulic motor for driving vehicles such as bulldozer, shoveldozer, etc. Thus, to provide as compact as possible two step changing-over mechanism and a well-balanced operation with a relative small force, a smooth plane against which the shoe at the plunger side opposed to a swash plate abuts and a first and second abutting portions located at the opposite plane to the smooth plane to abut against a fixed portion, when the swash plate pivots about the center of pivotal movement, to regulate the angle of said smooth plane of the swash plate to two positions are formed while a drive member is disposed which pivots said swash plate about the center of the pivotal movement to displace the angle of the smooth plane to two positions.

Abstract: A casing for ham and sausage, has a cubic design and provides a buffer effect. Characters and other patterns are embossed on the casing surface. The characters and patterns are made using heat foamed ink, on one surface of a film to be pasted together with another film. The films each have a heat shrinkable property and together form the casing.

Abstract: Several pairs of tubular articles are formed on two circular fixed fronts of needles using threads reciprocating transfer mechanism. The articles are alternatively formed by the two fronts by using sets of needles whose number may also vary. By using adjacent sets of needles, the two tubular, leg-shaped articles of each pair are successively formed to make up a body, that is, the panties portion for a pantyhose garment.

Abstract: An intermediate portal protecting an intercommunicating gangway between two coupled vehicles, particularly railroad cars. The portal comprises two mirror-symmetrical parts which are detachably connected to each other. The portal is closed on all sides and mounted for lateral displacement relative to the cars. On a straight track, the portal contour is flush with the contour of the cars. The parting surfaces between the portal and the respective car are designed to maintain a definite narrow gap therebetween under any operating conditions, as long as a supporting and guiding structure can follow these parting surfaces in parallel motion. To this end, the invention provides a supporting and guiding arm by which the portal is guided both horizontally and vertically by means of cam tracks conformable to the parting surfaces which are preferably spherical.