A control system guides a boring tool in a borehole. The tool has a longitudinal tool axis and includes a driver for advancing the tool axially through the earth and steering mechanism for directing the motion of the tool relative to the tool axis in response to control signals. The control system includes an axial electromagnetic source for generating an axial alternating magnetic field directed along an axial source axis. A sensing assembly remote from the source means includes first and secon...

A needle thread guide provided at a needle bar frame and located adjacent to the needle entry protects the needle thread from being stuck by the needle when the workplace is fed during button holing. The guide guides the needle thread outwardly when the needle descends, thus the needle thread positioned lower than the needle eye is protected from being stuck by the needle. The guide is associated with the oscillating motion of the needle, but its direction of oscillation is opposite to the direc...

The apparatus for guiding a missile generates an electromagnetic guide beam such as a CO.sub.2 -laser guide beam including spatial coding. For spatially encoding the guide beam there is employed a modulator as well as a scanning device which are intercoupled by means of a computer. The guide beam is moved in steps or increments by the scanning device in order to scan individual field sectors of a scanning field. Following each individual step, a code is transferred to or associated with a scanne...

An apparatus for guiding elongated items, such as cables, wires, hoses, and the like, onto or from spools. The apparatus includes two frame members that are pivotally and hand-releasably connected together to form an enclosed frame through which the elongated items are guided. A first pivotal and hand releasable connection is made between a first leg of the first frame member and a first leg of the second frame member. A second pivotal and hand-releasable connection is made between second legs o...

Guiding mandrin for drainage ducts featuring a wedge that by being pushed in or pulled out of the split tip of the mandrin tube will cause said tip to increase or reduce its diameter according to requirement. Hereby, a firm contact between guiding mandrin and drainage duct can be established which will significantly facilitate the handling of the drainage duct.

A guide track (19) being disposed on or in the roadway is scanned by means of a scanning or sensor device (18) during the travel of a vehicle (1). The scanning or sensor device (18) is adjustable in the transverse direction of the vehicle by means of an adjustable drive (10) which is controlled by the scanning or sensor device (18) in such a manner that the transverse distance between the guide track (19) and the scanning and sensor device (18) is kept at a minimum. Thereby, the adjustment path ...

A guiding signal generator and transmitter is included on a guiding device for generating and transmitting a guiding signal for guiding a tracking device. Provided on the tracking device are first and second guiding signal receivers spaced apart by a predetermined distance for receiving the guiding signal, and a controller for detecting a direction to and a distance from the guiding device based on outputs from the first and second guiding signal receivers and the predetermined distance. The con...

Sheet guiding cylinder of a printing press includes a cylinder casing rotatable about an axis of rotation, and having an outer cylindrical surface defining a skeletal framework; the skeletal framework being formed by guide vanes extending in longitudinal direction of the sheet guiding cylinder and having a curved guide vane profile disposed in planes perpendicular to the axis of rotation, the guide vanes beginning from respective locations radially inward from the outer cylindrical surface and t...

An apparatus for guiding a wire including a device for producing a washing jet and a device for removing washing mist generated from the washing jet which has a suction box. The suction box is located on an opposite side of the wire from the device for producing a washing jet. The suction box has a duct through which the mist produced in the washing of the wire is passed into an inlet chamber. The duct is arranged at an angle, preferably at an acute angle, relative to the running direction of th...

An arrangement is proposed for guiding a movable disk (3) in a continuously variable belt-drive transmission. The movable disk (3) is supported on balls (4) embedded in a mounting (5). The mountings (5) are interconnected in a narrow area. The axial travel of the arrangement is determined by bearing surfaces.