Abstract: A driver for a chain conveyor which is adapted to run in a conveyor trough which has side guide walls comprises a driver arm portion having outer side edges which terminate in a polygonal pin portion which tapers inwardly in lateral and longitudinal directions toward its outer end. A guide shoe has an inner side face with a recess into which the pin portion of the arm extend and the guide shoe is pivotally supported on the arm pin portion by a pin or sleeve element. The guide shoe includes an inwardly extending nose portion which rides between side edges of a U-shaped recess of the arm portion. Surfaces of the nose portion and the U-shaped recess of the arm defining recesses and stops for limiting the pivotal movement of the shoe.

Abstract: The invention relates to a device, metallic or of other biologically acceptable material, which is surgically inserted in the jaw bones for the purpose of artificially supporting and anchoring a fixed oral prosthetic member.The device consists of a substantially triangular plate with a plurality of holes and notches on the surface contacting the surrounding bone. The plate has a vertical pin integrally attached to a small shoulder and serving to fix a stump that protrudes into the oral cavity and to anchor the prosthetic member in place.

Abstract: An article feed mechanism for use in association with a franking device which operates on mail, comprises a feeding mechanism which includes an article feed path which is oriented so that it may be connected over a feed path of the franking device and which includes two separately driven conveyor sections. The first conveyor is driven by a drive motor and comprises a plurality of drive rollers which operate on the articles which are arranged in a stack at a stacking area and delivers them one at a time to the second conveyor mechanism which includes a pressure drive roller acting to drive the lowermost one of the articles under a sliding apron and then for advancing it into association with a driven roller cooperating with another overhead roller. A first sensor is located between the pressure roller and the cooperating over and under rollers and it acts when an article is advanced to disconnect the drive motor for the first conveyor.

Abstract: A play data detecting system for an electronic musical instrument in which in the case of multiplexing together and scanning note select signals from key switches and function select signals from tablet switches and analog volumes, these signals are divided into a plurality of scan blocks of different scan periods. For the tablet switches, a processing routine is executed twice in one cycle of a main routine in view of a required number of scan addresses and, for the analog volumes, the results of parallel processing are used once in one cycle. This permits high-speed processing of the key switches and low-speed processing of the tablet switches and the analog volumes with sampling periods fit for them, respectively.

Abstract: Brushgear having L-shaped brush arms, each consisting of a terminal strip and a commutator contactor strip, both being joined into one piece by lapping one on another and crimping a plurality of projections formed on the terminal or commutator contactor strip. The terminal and commutator contactor strips are made of materials suitable for each thereof. The brush arms are inserted into the grooves of brush holders provided on a case cover of a motor case and firmly held in position.

Abstract: A method of monitoring the reversal system of coke oven batteries comprises monitoring the position of the air valves, waste heat discs, and gas cocks in each of the coke ovens of a battery, measuring and centrally registering the temperatures and/or flow rates of the fluids supplied into and discharged from the oven, namely of combustion air, gases and waste gases, comparing the measured values with the desired values corresponding to the position of the system elements, and upon an undue deviation, signals for carrying out safety measures, such as actuating a gas deficiency safety, are automatically delivered. Also measured may be the oil pressure in the lines for supplying the hydraulic signals actuating the reversal mechanism, with again a release of alarm signals. A device for monitoring the reversal system includes an apparatus connected to the valves for shifting all of the valves between an operating position in one characteristic way to an operating condition in another characteristic way.

Abstract: The present invention relates to a jet device for cutting liquid of a machine tool comprising a rotary actuator attached at a suitable position of the machine tool, a nozzle attached to the output shaft of said rotary actuator, a pulse motor adapted to drive said rotary actuator, and a control section connected to the numerical control unit of the machine tool. The control section control the pulse motor in accordance with the instruction relating to the cutting tool for changing the angle of the nozzle at a suitable position.

Abstract: A power operated chuck comprises a rotatable chuck body having a plurality of clamping jaws which are radially movably mounted on the chuck body. An axially movable piston on the chuck body is moved by a moving mechanism which includes several hooks or hook members having wedge-shaped interengaging surfaces for effecting relative movement therebetween. The chuck body has a plurality of recesses with counterweights which are slidably movable or pivotally movable in the recesses. The cover covers the recess adjacent an end of the chuck body. A pressure member alongside each of the counterweights is laterally offset relative to the center of gravity of the associated counterweights and is mounted in the chuck body for rotary movement in a manner such that the centrifugal forces produced by rotation of the counterweights at the chuck body are applied against the exterior of the piston adjacent the wedge-shaped portion of the hooks.

Abstract: A rotary hook for a sewing machine has a rotatable hook drive shaft driving a hook body in cooperation with a reciprocating needle which moves toward and away from the rotary hook. The hook body has a revolving rotary hook tip which is movable in a path relative to the needle and is engageable with the thread presented by the needle. The rotary hook includes a thread deflecting shoulder to enlarge the thread to form a needle thread loop, includes a case holder having an annular guide rib and a pin extending axially outwardly of the holder. A bobbin case has a central hollow sleeve into which the pin extends and a latch engageable with the pin to hold the case holder to the bobbin case. The case each holder and the bobbin case have a sidewall with interiors which are in substantial alignment. The bobbin case holder has a rearwall formed as a substantially truncated cone which is eccentric to the guide rib and the bobbin case has an annular sidewall and a frontwall have an arched mushroom shape.

Abstract: An ear piece for a sound producing device such as a headset comprises an annular ear cushion with at least one part of an elastic, soft, sound permeable foam and at least one other part of a sound permeable layer which is thin in relation to the overall thickness of the air cushion and has a defined acoustic impedance for low and medium frequencies of the audibility range. The ear cushion acts as a frictional resistance with a central portion defining coupling space from the sound producing device to the ear and representing an acoustic connection through the sound producing device to the air.

Abstract: A self-travelling vibration generator having a travelling frame movably supported by parallel rails, a lifting/lowering frame standing at substantially right angles with respect to the travelling frame, a plurality of eccentric rollers provided off-center with respect to a roller shaft rotatably provided on the lifting/lowering frame; and having such a construction that an induction motor is used for at least either of a motor for travelling the travelling frame or a motor for rotating the roller shaft so as to cause the eccentric rollers to give vibrations to a human body while travelling on the human body.

Abstract: A headband comprises first and second headbands having their one ends pivotally interconnected and being foldable about their pivotal interconnection inwardly and outwardly in a single plane and having opposite ends with an earpiece carried thereby. Each of the headbands include at least three separate parts telescopically interengageable and which are of substantially equal lengths. Advantageously the central part may be made of plastic and includes a tubular portion into which the next adjacent part is telescopical. The tubular portions are advantageously provided at each end of the central part to permit a telescopic movement of each of the other parts into the middle part.

Abstract: A feed device for feeding a material pattern cut to a sewing machine for the forming of stitch groups such as a row of button holes by a reciprocating needle operating on the material pattern which is advanced through the needle path and moved in a draw-off path, comprising a draw-off roll arranged alongside the needle in a position to engage the material. The draw-off roll is arranged on a shaft which is coupled through a sleeve to another shaft containing a transport roller forming part of a material transport. Drive means are connected to drive the shafts of the draw-off roller and a laterally arranged transport roller and a drive belt is interconnected between the transport roller and a second transport roller which extends rearwardly thereof and is located at the turning point of the material draw-off.

Abstract: Protective repiratory masks with excess pressure make sure that an excess pressure is maintained during both the inhalation and exhalation, whereby a penetration into the mask of the ambient atmosphere is prevented. A lung demand valve or control for the mask is divided by a control diaphragm into a respiratory chamber, and an outer chamber. The respiratory chamber communicates with, and follows the pressure in, the interior of the mask; to admit breathing gas, the respiratory chamber is connectable to the source through an inlet valve which is controlled by the control diaphragm through a lever and a rod. The outer chamber accommodates a locking mechanism which is manually actuable through a slide and by which the control diaphragm may be held in a pressure-relieved locked position in which also the inlet valve is closed. During periods where the mask is not in use, unnecessary supply of respiratory gas is interrupted.

Abstract: A clamping device comprises an angle member carrying a clamping mechanism and a clamping band which is engaged by the clamping mechanism at one end and engages around and holds the workpieces to be joined firmly in contact with each other, and is attached, by its other end, to an anchor. The anchor may be provided on the angle member or on a tensioning angle member. To tension the band, the clamping mechanism is mounted on a slide 3 which is displaceable by a pulling means operating thereon and which comprises a screw and a nut.

Abstract: A lubricating system for sewing machines is produced with the sewing machine running by cutting a predetermined amount of cotton fibers into small lengths and blowing the fiber lengths into the sewing machine housing. As the fibers fill the housing a felt cushion conformable to the paths of motion of the parts of the mechanism is produced. The felt cushion is supplied with oil through a wick.

Abstract: An angled bolt is used for securing a mitered connection between two plates particularly furniture boards. To obtain a satisfactory fit between the miters, the position of the bolt shanks in the plates must be well fixed. This is obtained by a stop provided on the bolt so as to extend substantially in the plane of the joint. The stop may take the shape of a ring or a star. To be able to assemble plates also in other than right-angle positions, the connecting corner link is designed as a hinge, with the hinge pin extending perpendicularly to the bolt shanks and having flattened protruding ends which form the stops. These stops come automatically into their position in the plane of the joint.

Abstract: To be able to minimize the size of the lifting cylinder, a control lever is braced against an abutment at the waste side, and hinged on its other end to the piston rod of the lifting cylinder, thereby forming a movable hinge axis. Consequently, in a normal position, the fixed hinge axes of the lifting cylinder and the control lever form a triangle of joints, with the common movable hinge axis therebetween at the inside, i.e. at the side of a control bracket. The control bracket is designed with a bent extension projecting below the conveyor extending toward the planer and forming a scraper edge which alos serves as a tilting axis for angularly positioning the conveyor with the planer. The adjusting device permits of a coal planer conveyor in height as it moves over a coal face with the planer on one side of the conveyor and a bracket secured to the opposite side wall.

Abstract: A stop motion device for stopping the motion of a sewing, embroidering or tufting machine, comprises a pivotally mounted sensing lever having a sensing arm for receiving threads used by the machine. The sensing lever is also engaged with a switch for deactivating the machine when the lever is pivoted into a position to disengage the switch. A fixedly mounted guide is provided for guiding the threads at a location spaced from the sensing arm in the feed direction for the threads. Either the sensing arm or the guide includes one bore for guiding all the threads while the other includes two offset bores each for receiving at least one thread. The offset bores are offset perpendicularly with respect to the feed direction and with respect to the other single bore. When one of the threads breaks, the tension of the remaining threads causes the sensing lever to pivot and thus activates the switch to stop the machine.

Abstract: An enclosure, in particular for a bath or shower, comprises a frame formed of a plurality of sectional rails connected together and at least one door or wall element connected to the frame. The door or wall element includes a panel which is made up of two outer rails and an inner rail connected and sandwiched between the outer rails. At least one of the outer rails is made of transparent plastics material. Each rail has an outer exposed surface and a guide groove communicating with that surface and having a recess extending at least partly behind the outer surface. An elastic connecting strip is positioned within the groove and has a projecting portion extending into the recess for retaining the strip. The strip includes resilient engaging elements. A facing strip is engaged over the guide groove and has a projection projecting into engagement with the engaging elements of the connecting strip for holding the facing strip into the groove.