Abstract: The combination with a machining tool for machining boles, of a clamping and feeding device for feeding the boles to the machining tool. The clamping and feeding device comprises a slide on which the bole rests during machining. The slide has mounted thereon a pivotable device that directly supports the bole, this pivotable device being elongated and extending lengthwise of the bole and being pivotally connected at one end to the slide. A power jack changes the elevation of the other end of the elongated pivotal device thereby to permit positioning the bole with its heart zone parallel to the direction of movement of the slide. In another embodiment, a lifting device is carried by the slide for lifting one end of the bole relative to the other end of the bole, the lifting device comprising at least one cam supported eccentrically on the slide, and a power jack to rotate the at least one cam to lift the one end of the bole.

Abstract: An organ manipulator is described for exposing an organ situated in a body cavity to be investigated or treated. The manipulator has a retractor body comprising a multi-joint lever system of articulated arms connected to one another, to be pivotally movable and which can be transformed from a axial position for introduction into the body cavity into an open position, in which is possible for the articulated arms to assume a flat triangular shape.

Abstract: The invention relates to a current sensor which works with a toroidal body, through which at least one conductor to be evaluated is extended and from which a measuring signal is taken. The toroidal body (1) comprises a magnetostrictive material and conductor runs (2) of length-dependent resistance material are applied over at least one ring region of the toroidal body (1). The resistance changes of the conductor runs are evaluated to determine a value representative of the current (I) to be measured.

Abstract: A connecting element for the connection of sectional steel columns with roof trusses consisting of wood and exhibiting mutually converging lateral faces, for the erection of hall constructions and the like. The roof truss (2) has an end face (17) in flush contact with the column (1) and a steel band (16) is attached to the topside of the roof truss (2) for connection with the column (1) which latter is beveled in correspondence with the slope of the roof. This steel band is connectible with the column (1) by welding or by a flange plate (15) fastened to the column (1). A haunch-shaped supporting element (18) is provided on the inside between the column (1) and the roof truss (2).

Abstract: A connecting element for the connection of sectional steel columns with roof trusses consisting of wood and exhibiting mutually converging lateral faces, for the erection of hall constructions and the like. The roof truss (2) has an end face (17) in flush contact with the column (1) and a steel band (16) is attached to the topside of the roof truss (2) for connection with the column (1) which latter is beveled in correspondence with the slope of the roof. This steel band is connectible with the column (1) by welding or by a flange plate (15) fastened to the column (1). A haunch-shaped supporting element (18) is provided on the inside between the column (1) and the roof truss (2).

Abstract: A nail plate, intended especially for joining wooden beams, is made with columns of nails formed by tongue-shaped punch-outs. The punch-outs are arranged in parallel to a pair of longitudinal edges of the plate, and at least one of a front edge and a rear edge, each extending diagonally between the longitudinal edges, has a stepped pattern.

Abstract: Round wood trunks are formed into beams, boards, etc. shaped on all sides, each round wood trunk being continuously flattened along its lengthwise direction in each of several working steps. In each feeding operation of the round wood trunk, it is simultaneously flattened on at least two sides.

Abstract: In a remote control unit for modifying the operating states of physically spaced operating units such as the volume control of a stereo system, the color control of a television set and the brightness control of a lighting fixture, a first key is actuated to call up in a predetermined sequence the different floors of a building in which the operating devices are disposed. The floors are identified on a display as they are called up. Upon, actuation of a second key, further actuation of the first key calls up the different rooms on the last-displayed floor of the building, the rooms being identified on the display. Upon another actuation of the second key, yet further actuation of the first key calls up the operating devices or units disposed within the last room called up by actuating the first key. A reset key is provided for returning to the first member of the uppermost hierarchical grouping (i.e., the first-displayed floor).

Abstract: A composite beam has round timber sections joined by nail plates, each timber section being edged in accordance with the conical contour of the tree trunk from which it is formed. The timber sections are joined by the nail plates with their tapered ends pointed in the same or in opposite directions, depending on the load requirements. Each nail plate has a front edge, a rear edge and a pair of longitudinal edges, and rows of nails are formed of tongue-shaped punch-outs in the nail plate, with each punch-out being parallel to the longitudinal edges. A step pattern is provided on the front edge and/or the rear edge.

Abstract: A current-limiting switching element, for whose at least one contact set comprising a movable and a fixed contact member, a device for providing an auxiliary magnetic field is arranged with an axis perpendicular to the direction of the extent of the movable contact member. It is provided that the direction of motion of the movable contact member lies in the direction of the axis of the device for providing the auxiliary magnetic field. The direction of the current to the contacts is chosen so that the movable contact member is subjected to a force repelling it from the fixed contact member with respect to the auxiliary magnetic field.

Abstract: In a method for the manufacture of prismatic or truncated-pyramid-shaped beams, it is suggested to produce respectively two adjoining, mutually perpendicularly disposed lateral faces in one working step by simultaneous edging. In an apparatus for performing the method of this invention, a machining tool (2) with two sawing or cutting tools (7, 18) is provided, these last-mentioned tools forming a right angle with each other and being arranged offset with respect to each other in the direction of the longitudinal extension of the bole (6) to be edged.

Abstract: An apparatus is disclosed for the production of prismatic or truncated-pyramid-shaped beams from boles (4) by edging the latter with the aid of at least two machining tools (13, 14) wherein a relative movement is generated between the bole (4) to be machined and the machining tools (13, 14). In order to be able to manufacture conical beams, the machining tools are adjustable during edging transversely to the direction of the longitudinal extension of the bole (4) the result being a linear relative motion of the machining tools (13, 14) inclined under an acute angle with respect to the axis of the bole (4).

Abstract: A compound support consists of two or more beams (5) joined together along their butt joint (4) by means of nailing plates (1). The nailing plates (1) consist of sheet-metal plates (11), tongue-shaped nails (2, 3) being forced out of the sheet-metal plates (11) by means of punchings (21, 31) in a rhomboid-shaped zone.

Abstract: A device (1) for impressing nailing plates (4) into beams (5, 6) to be joined together comprises a unit (3) with pressure platens (12, 12') for impressing the nailing plates (4), and a unit (7) movably mounted with respect to this unit (3), for compressing the beams (5, 6). The device (1) is fashioned to be displaceable in the longitudinal direction of the beams (5, 6) by way of rollers (23, 28, 34) or like guide means.

Abstract: In an apparatus for joining two or more longitudinally oriented beams (1) or the like into girders by prefabricated nail slabs (2), feeding devices (6) and guide means (7) are arranged in front of and behind a table (5) designed for supporting the beams (1), for the feeding and supporting, respectively, and for the alignment of the beams (1) or the like to be joined; a compressing device (8) is arranged above the table (5) for pressing the beams (1) or the like together and/or for pressing the beams against the table (5); and pressing boards (9) are arranged on both sides of the table and/or of the beams (1) or the like to be joined, these pressing boards carrying retainers (10) for the nail slabs (2). The pressing boards (9) extending over the entire vertical extension of the beams (1) or the like to be joined are connected together for the execution of opposite movements.

Abstract: A configuration for a contact arrangement is disclosed for a switch having two coaxially positioned and generally cylindrical contacts. Each contact contains a coaxial core of ferromagnetic material, and a current-carrying envelope surrounding the core has the form of a helix. The helical envelope creates a current component which sets up a magnetic field in the widening contact gap when the contacts are separated that disperses arcing. Moreover, the field reinforces the closure pressure when the contacts are in their closed position. Ellipsoid shaping enables the field to be normal at all points of the contact-making surfaces.

Abstract: An overload fuse with a fusible conductor and quenching baffles is curved preferably forming a partial annulus, and several quenching baffles are disposed perpendicular to the fusible conductor. Due to its flat design, this fuse has only a small volume and at the same time a large switching capacity because the partial arcs formed between the quenching baffles are driven radially outward by the dynamic forces and are lengthened accordingly.

Abstract: A material-handling blower is associated with a conveyor duct, which has an open lower end. A horizontal conveyor screw has an inner end associated with the lower end of said duct and is angularly movable about a main vertical axis extending near said inner end. At least two backing rollers are rotatable on vertical axes and connected to said conveyor screw to move in unison therewith about said main vertical axis and are engageable with the inside peripheral surface of a silo to back said conveyor screw. Horizontal carrying arms are connected to said conveyor screw to move in unison therewith about said main vertical axis and extend from said conveyor screw on opposite sides thereof substantially at right angles to the axis of said screw.

Abstract: Crank-operated rods are mounted on two vertically spaced apart crankshafts, which are driven to rotate in the same sense. Working tools are carried by said rods on the side thereof which faces the body of silage and penetrate said body as they move downwardly. Each crank-operated rod is provided at its lower end with at least one depending conveying tine, which at least during part of the movement of the respective crank-operated rod away from the body of silage moves over a bottom plate, which extends under all juxtaposed crank-operated rods and is trough-shaped on the side that faces away from the working tools.

Abstract: Disclosed is an apparatus for clearing stored material, such as silage, from a stack of such material, comprising a cantilevered frame; at least one crank rod carried by the frame and having milling tools mounted thereon which engage and clear the stored material; a cranking mechanism mounted on the frame and having the crank rods eccentrically mounted thereon in such a manner that the crank rods are driven with a reciprocating movement such that the milling tools have a lower, silage-engaging path of travel in one direction, and a higher return path of travel in an opposite directional and means for driving the cranking mechanism. In one preferred embodiment, the apparatus further comprises a conveyor means, such as a suction fan, and is particularly suitable for use in discharging silos.