Abstract: The present invention relates to a filter cleaning device, preferably for the cleaning of gases, such as welding fumes. To provide a filter cleaning device which efficiently cleans the filter without need for dismounting it, the filter cleaning device comprises at least one rotary filter (10) with outwardly directed projections (17), and at least one impeding device (12) which upon rotation of the filter (10) causes the projections (17) to give way and permits them to revert, whereby a shaking movement is imparted to the projections (17) to make them shake off the impurities adhering to them and toss the impurities aside by the action of the rotation of the filter (10).

Abstract: In a braking device for motor-driven reeling devices, a motor-driven reeling drum (5) cooperates with a brake (10) for braking thereof. In order to provide a simple braking device which is suitable primarily for reeling devices of a more simple type, the driving motor (7, 11) of the reeling drum (5) is movably mounted such that it is movable relative to the brake (10) with which it cooperates via a movement transferring system (12, 20) for controlling the braking effect of the brake.

Abstract: This invention relates to a device for shifting ratchet means in wind-up apparatuses which comprise a rotary wind-up drum (1) with one or more pawls adapted to cooperate with the ratchet means (17) to block the rotation of the wind-up drum (1). The wind-up apparatus presents an opening (10) for a means (2) to be wound onto the wind-up drum (1) and is adjustable such that the opening (10) will take a position that permits withdrawal in the desired direction of the means (2) wound onto the wind-up drum (1). To permit shifting the ratchet means (17) by simple means without having to dismantle the wind-up apparatus, the ratchet means (17) has one or more gripping portions (30 and/or 31) which can be caused to cooperate with the wind-up drum (1) to shift the ratchet means (17) in relation to the opening (10) by rotation of the wind-up drum (1).

Abstract: Disclosed is an apparatus for conveying gases into or out of a specific area while at the same time providing illumination for the area. A lamp housing is adjustably mounted in a cap which is attached to the free end of a gas conveying pipe. The cap widens from a relatively small cross section area to a substantially larger cross section area with the lamp housing movable at least between a position in which it completely blocks flow through the small cross-sectional area of the cap and a position which, while still completely within the confines of the cap, permits the flow of gas therethrough. Specific embodiments of the invention include one in which the adjustable mount is controllable from outside the cap permitting ease of gas flow adjustment therethrough. Because the lamp housing is entirely contained within the cap, it is protected from inadvertent damage during careless handling in its vicinity.

Abstract: A track which forms a gas throughflow duct. The track is of the type adapted for guiding a movable gas passage unit therealong in sealing cooperation with the gas throughflow duct. The track includes a plurality of structural girders disposed in abutting relationship and a plurality of lateral sections which are readily connectable with the girders to depend therefrom in pairs. A plurality of interengaging sealing sections are readily joined to the lateral sections, and these sealing sections are adapted to engage the movable gas passage unit to allow the unit to be moved along the track while maintaining the seal. The lateral sections extend longitudinally to either side of joints between the structural girders. Thus, the lateral sections contribute to effecting interconnection of the girders to each other.

Abstract: A wind-up device for a flexible conduit, such as a hydraulic hose. The wind-up device includes a drum rotatable on a stationary shaft. A coil spring assembly including a spiral coil spring therewithin is mounted at one end of the shaft and the outer axial end of the drum. The other, opposite end of the shaft includes a fixation portion by which the shaft is fixed in its stationary condition. The radially inner end of the coil spring is anchored with respect to the stationary shaft through a spring hub detachably mounted to the one end of the shaft. The spring hub serves not only to anchor the spring with respect to the shaft but also to provide an axial pressure bearing at the one end of the shaft for holding the drum in place axially on the shaft. One or more fixation elements extend between the spring hub and the shaft to normally prevent relative rotation between the spring hub and shaft. At least one of these fixation elements is eccentrically positioned.