Abstract: The Present heavy duty jig saw is constructed for cutting through walls of concrete, masonry, and the like. For this purpose a somewhat elongated suction bell carries a guide bar secured to one longer side of the bell. The guide bar in turn carries tool carrier means which are movable back and forth along the guide bar by a separate hydraulic drive. The tool carrier supports a tool head which is reciprocable by a second hydraulic drive. The suction bell is provided with a sealing skirt around its open edge and preferably adjustable legs secured to the bell limit the elastic deformation of the sealing skirt.

Abstract: The present passenger car has front seats and rear seats and includes means for adjusting both seats back and forth along the longitudinal axis of the passenger vehicle. For this purpose the rear seat is guided on tracks, preferably tracks which have a portion rising in the forward direction. The rear back rest is hinged at its lower edge or end to the rear edge of the rear seat proper. The top edge of the rear back seat is guided in substantially vertical guide rails, whereby it is possible to tilt the back rest relative to the horizontal in the manner of a reclining chair simultaneously with the longitudinal adjustment of the rear seat or seats.

Abstract: A coin computing apparatus includes an input for converting coin values received to coin unit data for storage along with other data. This data is subsequently converted to unit data for controlling operation of the device or the dispensing of articles. The storage includes a temporary storage for storing play unit data as it is received and a permanent storage device for receiving data from the temporary storage device for updating purposes. A read/write control device is included for reading the permanent storage data to the temporary storage means following interruptions such as power failures.

Abstract: A device for connecting two parts of a clock in which one part is provided with an opening and the other with a projecting element. There is a resilient region on one side of the opening and a latch projection on the projecting element. The resilient side of the opening is deflected by the projecting element until the latch projection engages the first mentioned part and the resilient side catches the latch projection.

Abstract: An electrical connector comprising a wire connected terminal comprising a mating portion matable with a mating portion of another terminal of paired connectors, a wire connecting portion for connecting an electrical wire, a tongue forming portion having a pair of tongues provided at directly opposite side walls thereof extending backward and outward, and four projections provided therein in the vicinity of the rear end of the tongues spaced apart from each other in the peripheral direction such that the tongues are aligned with spacings between the projections, said wire connected terminal being housed in a terminal housing in such a manner that the tongue forming portion of the terminal is supported by top surfaces of four elongated ribs formed inside of a circle sectional aperture of the housing extending in an axial direction spaced apart and in parallel such that the four projections of the terminal may be aligned with said four elongated ribs and abut against the rear ends of the elongated ribs whereby t

Abstract: A vacuum packaging machine is disclosed for the production of packages from two different packaging material webs, one having printing marks on it. By controlling the movement of the individual working stations in accordance with the spacing of the printing marks the correct position of the imprinted cover foils on the formed trays is achieved.

Abstract: The present pipe elbow includes at least two straight pipe sections joined together along a Y-seam, for example by welding. The Y-configuration of the seam is such, that the three limbs thereof all have the same length, whereby these limbs meet at a point off center relative to the central axis of the pipe. The elbow is formed by making a straight cut at right angles toward the longitudinal axis of the pipe and slightly through said longitudinal axis and by further cutting the straight pipe at acute angles so that second and third cuts meet the first cut at said off center point. These cuts result in wedge segments which fit exactly into the space between the arms of the Y-configuration when the pipe edges are joined along the leg of the Y-configuration. Thus, the present process does not produce any waste whatsoever.

Abstract: A pipe elbow or bend has a pair of adjacent straight pipe sections joined together on one side of a center line of each pipe section, and a wedge shaped insert of a segment of pipe of the same diameter joining the straight pipe sections on the other side of the respective center planes, whereby a Y-shaped joint is formed in the elbow on each side of a plane of symmetry perpendicular to the center planes of the pipe section. The elbow may be formed by serving a straight pipe along a plane normal to the axis of the pipe on one side of the center plane thereof and along a pair of planes at acute angles to the axis of the pipe on the other side of the center plane, to form a pair of pipe sections and a pipe segment. The edges of the pipe sections formerly connected to the pipe segment are joined together, and the pipe segment is joined to the ends of the pipe sections at the other side of their respective center planes.

Abstract: The present circuit arrangement is, for example, useful for producing reference signals in response to the rotation of a body such as a wheel or rotor to be balanced. Source signals are produced in response to the rotation of said body. Circuit means are provided for handling and comparing the source signals in such a manner that the reference signals are provided at an output terminal in response to the occurrence of the center of a source signal or in response to the maximum of a source signal. The production of pulses may also be controlled in response to (i.e., at) the center and the maximum of a source signal.

Abstract: An electrical heating mat comprises an electrical resistance heating wire arranged in a loop formation with substantially straight leg portions between curved portions. A plurality of spaced apart spacer strips made of thermoplastic material are provided to hold the heating wire its looped formation. Each spacer strip comprises an elongated narrow strip body having a plurality of spaced open-sided were receiving loops having an inner dimension assuring snap-fit reception of the wire therein. One end of each strip body is provided with a snap-in coupling member dimensioned to snap-fit into a wire receiving loop at the end of an adjacent spacer strip to enable a plurality of mats to be interconnected together to form a larger unit. Spacer lands extending generally parallel to the leg portions of the heating wire may connect the spacer strips together.

Abstract: The present apparatus is especially constructed for osteotomic purposes. Bone extension means are movably supported in an elongated, slender housing. The extension means include an extension member movably extending out of said housing. Drive means are supported in the housing and operatively connected to the extension means. The drive means are energized through a source of power which may be either located in the housing itself, or it may be an external power source, such as a magnetic field. The power source is operatively connected to said drive means. Control means are supported in said housing to operate the drive means through said power source for moving the extension member. Sealing means seal the housing so as to provide an implantable structural unit.

Abstract: This light or optical conductor is formed as an integral structure, preferably by extrusion, of an optical material such as glass or transparent plastics material. A light conducting core is supported in an envelope by means of lands and ribs arranged and shaped in such a manner that the core and the lands as well as the ribs are surrounded by hollow spaces which are preferably filled with air. The ribs are tapering away from the core toward the envelope whereby light entering into these ribs through the lands from the core is reflected back into the core.

Abstract: The present material transport device for a granulating apparatus includes a plurality of transport pressure rollers arranged in a curved row for cooperation with a transport cylinder of the granulating apparatus. An infeed table extends substantially tangentially relative to the transport cylinder which forms with the first pressure rollr of said row an infeed point. A run-off table extends also substantially tangentially relative to said transport cylinder and forms with its downstream end a counter ledge for a rotary knife. The row of pressure rollers extends around the transport cylinder from said infeed point substantially to said counter ledge.

Abstract: An articulated master slave manipulator has a lower arm pivoted at a main idler pulley at one end of an upper arm, and a counter-balance mass pivoted at an idler pulley at the other end of the upper arm. A coupling system maintains the angle between the axis of the upper arm and the axes defined by the centers of gravity and the respective main pulleys of the counter-balance mass and the lower arm equal. A flexible, non-stretchable cable or so called tape extends from an actuator pulley on the counter-balance mass, around an auxiliary idler pulley on the counter-balance mass, thence around the main idler pulley and an auxiliary pulley on the lower arm to an output pulley on the lower arm. The actuating pulley, auxiliary pulleys, and output pulley are mounted to have a constant distance between their axes and the axes of the respective main idler pulleys.

Abstract: Continuously operable sugar centrifuge comprises a number of centrifuging channels forming part of a conical frustum and being symmetrically distributed relative to a rotational axis. Preferably, two channels are arranged to receive the massecuite through massecuite supply conduits connected to the upper ends of the centrifuging channels. The lower ends of the centrifuging channels are connected through radially extending sugar discharge conduits leading to a sugar outlet arranged coaxially with the drive shaft of the centrifuge. The sugar conduits have a radial dimension so that their outer ends extend outside of the centrifuging channels. The outer ends of the sugar conduits are provided with funnels facing with their open face in the direction of rotation of the centrifuge whereby an air stream transports the sugar radially inwardly from the centrifuging channels to the sugar outlet.

Abstract: An extraction tower for leaching sugar beet cossettes or comminuted sugar cane. A central shaft is rotatably supported in a tower housing. Feed advance wings for the material to be leached are secured to the central shaft with spacings between the wings. Baffle elements are secured to the inside of the tower housing so as to extend into the spacings between adjacent wings. The baffle elements are elongated plates which are secured to the housing wall at a plurality of points, preferably three points so as to simultaneously form a reinforcement of the tower housing. The baffle plates are twisted relative to a longitudinal axis so that one end of a plate has an inwardly and upwardly facing edge, while the opposite edge faces downwardly and vice versa.

Abstract: An impact drive tool has a cylinder within which a percussive piston is mounted for actuating a ram to drive a nail into a workpiece. Valve means are provided for introducing compressed air to one side of the piston to cause the impact stroke, and an air storage chamber is provided for returning the piston to its rest position. A truncated cone shaped first buffer element of a cellular polyurethane is affixed to the bottom of the percussive piston. A second buffer element of a harder material, such as a cross-linked polyurethane is mounted in the bottom of the cylinder. The second buffer element has a recess facing the first buffer element and shaped to receive the first element. The buffer elements are positioned so that, at the end of an impact stroke, the first buffer element is initially deformed, followed by the striking of a bottom portion of the piston on the second buffer element to absorb the impact energy.

Abstract: A venting valve for a steam decorticator has a valve chamber connected by way of a straight conduit to the pressure vessel of the decorticator. A replaceable valve seat is provided in the connection between the valve chamber and the conduit, and a valve, normally biased to its open position, is disposed in the valve chamber in such a position that direct flow of liquids from the conduit impinge on the head of the valve. The valve head is also replaceable.

Abstract: A conveyor system for aligning objects includes three sequentially arranged conveyor belts. The first belt has a velocity v.sub.1 and delivers the objects to the second belt. The second belt runs intermittently, having a mean velocity at least equal to v.sub.1 and delivers the objects to the third belt. The third belt runs continuously at a velocity of at least 2v.sub.1. An alignment rail over the third belt is lowered to align the objects, and is periodically raised to let them pass. A periodically acting thrusting device over the third belt may be provided for urging rows of the objects closer together. A vertically movable product holder may be provided at the end of the second belt to inhibit passage of objects to the third belt except during determined intervals. A further alignment rail may be provided on the third belt after the thrusting device for realigning the objects, if necessary.

Abstract: A support structure for a suspension centrifuge includes pressure responsive means for automatically monitoring and stopping the loading or filling of the centrifuge in response to a certain, if desired, adjustable pressure. For this purpose, the axial bearing is supported with its outer race by a piston ring which reaches into a ring groove or cylinder in a support ring. The ring groove contains a pressure medium and communicates with a pressure responsive switch means which is connected to control, for example, a filling valve for the centrifuge.