Abstract: A lift car securing arrangement includes a restraining arrangement having a restraint that is supported by the lift car arranged such that it can be placed into and removed from restraining interaction with an extended stationary interaction element arranged to extend along the vertical pathway of the lift car, and which restraint when placed into restraining interaction locks the lift car to the stationary interaction element, a power-interruption device that can be placed into and removed from a power-interrupting position whereby the power to a driving motor unit that is part of the lift is interrupted when the power-interruption device is placed arranged in its power-interrupting position, in which the power-interruption device is so arranged at the restraining arrangement that the said power-interruption device is located in its power-interrupting position when the restraint has been set into restraining interaction with the extended stationary interaction element.

Abstract: The invention concerns an elevator system comprising an elevator car with a working platform arranged for carrying people or materials and which by means of the interaction between a gear wheel and gear rack can be moved along an elongated generally vertical mast constructed from a number of mast sections mounted on top of each other. To facilitate the erection, tearing down and anchoring of the mast to a nearby building structure, the moving unit comprises a passenger-carrying service and assembly platform, which, via a swing arm, is flexibly supported by the elevator car to allow a swivel action in a horizontal plane (C, D) relative to the elevator car.

Abstract: The invention concerns an arrangement for securing a lift car (1) that is part of an electrically driven lift at a predetermined level for, for example, service or maintenance, and for preventing unintentional motion of the lift car secured in this manner, whereby the lift car may be of the type that is arranged with a cage or platform for the transport of persons or material.

Abstract: A method of lowering a lift cage is provided for a motorised lift that has a device for releasing a motor brake included in a drive motor, an actuator operated from the lift cage that from its initial position can drive the brake release mechanism to an active brake release position and back to its initial position, and a catching device that stops the lift cage in case its descent should exceed a predetermined speed limit.

Abstract: An arrangement for a hoist secures safety zones in case persons should be outside the hoist cage in a hoist shaft. The arrangement can identify risk situations and includes mechanical limitation devices that can enter into the path of the hoist cage. The limitation devices are arranged at a distance from the upper and lower end limits of the hoist cage during normal operation in order to form upper and lower safety end limits, thereby mechanically securing the safety zones. Striking surfaces are arranged to tilt between an inactive state outside the path of the hoist cage and an active state in the path of the hoist cage forming the safety end limits. The striking surfaces are balanced so that they strive to take their respective active states. A retaining device is arranged on each striking surface to keep the striking surfaces in an inactive state during normal operation and to release the striking surfaces in a risk situation so that it takes its respective active state.

Abstract: A hoist system comprises at least one mast (2), a hoist trolley (4) moveable externally along the mast, and a platform (24), which is articulately coupled to the hoist trolley (4) so that it is horizontally pivoting about a substantially vertical axis (22) between two end positions relative to the hoist trolley (4). The position of the vertical axis (22) is adjustable for adjusting the distance between the hoist trolley (4) and the platform (24). As a result, the mast can be anchored in a traditional manner at one of the two facade sections of a building extending from a non-right-angled corner, and the platform can be angled horizontally relative to the hoist trolley so that it extends substantially in parallel with the other facade section of the building.

Abstract: A versatile construction hoist system comprises a hoist trolley having a first pair of connection members, and a work platform having a second pair of connection members. The work platform is releasably connectable to the trolley through interconnection of the first and second pairs of connection members with the work platform in a horizontal position in which the work platform floor is situated at the first level relative the trolley. A transport platform, which has a third pair of connection members, is releasably connectable to the trolley through interconnection of the first and third pairs of connection members with the transport platform in a horizontal position in which its floor is situated at a second level relative the trolley, said second level being below said first level. An adapter enables use of standard transport platform elements.

Abstract: In an arrangement for sliding doors, a door leaf comprises a number (n) of interlinked and jointed sections (4:1-4:n) in which adjoining sections are able to rotate around a joint axis (A) from a position in which the sections are in alignment with each other to a relative angled position. The door leaf can slide in the door opening (6) in guides (8, 9), each of which comprising a first and a second interacting guide element (8′, 8″; 9′, 9″) arranged on two opposing end edges (22, 23) of the door leaf and the corresponding sides of the door opening. To obtain a sound insulating door, there is an elastically deformable material between the adjoining and relatively flexible sections (4:1-4:n) to separate the sections from each other.

Abstract: In an arrangement for sliding doors, a door leaf comprises a number (n) of interlinked and jointed sections (4:1 4:n) in which adjoining sections are able to rotate around a joint axis (A) from a position in which the sections are in alignment with each other to a relative angled position. The door leaf can slide in the door opening (6) in guides (8, 9), each of which comprising a first and a second interacting guide element (8', 8''; 9', 9'') arranged on two opposing end edges (22, 23) of the door leaf and the corresponding sides of the door opening. To obtain a sound insulating door, there is an elastically deformable material between the adjoining and relatively flexible sections (4:1to separate the sections from each other.

Abstract: The invention concerns an arrangement for sliding doors of the type where a door leaf (3) comprises a number (n) of interlinked and jointed sections (4:1-4:n) in which adjoining sections are able to rotate around a joint axis (A) from a position in which the sections are in alignment with each other to a relative angled position, whereby the door leaf can slide in the door opening (6) in guides (8, 9), each of which comprising a first and a second interacting guide element (8′, 8″; 9′, 9″) arranged on two opposing end edges (22, 23) of the door leaf and the corresponding sides of the door opening. To obtain a sound insulating door, there is an elastically deformable material between the adjoining and relatively flexible sections (4:1-4:n) to separate the sections from each other.

Abstract: The present invention concerns an arrangement for a hoist to secure safety zones in case persons should be outside the hoist cage in a hoist shaft, comprising a means of identifying risk situations and mechanical means of limitation that can enter into the path of the hoist cage arranged at a distance from the upper and lower end limits of the hoist cage during normal operation in order to form an upper and a lower safety end limit, mechanically securing the said safety zones.

Abstract: An elevator interlocking mechanism interlocks the elevator cage door and each landing door, and includes a release mechanism for release of the interlocks when the elevator cage is at rest at a landing. The elevator cage interlock comprises an elevator door locking rod which in a locking position engages a lock pin to prevent the elevator cage door from being opened. Each landing interlock includes a corresponding landing door locking rod which in a locking position engages a locking pin, which prevents the landing door from being opened. The locking rods are jointly operated by a single operating device so that the operating device--at a proper landing position--displaces the elevator locking rod from its locking position, and in turn the locking rod displaces a landing door locking rod from its position using a cam.

Abstract: A wall module has a first connecting portion with a non-symmetrical tongue with a tip at one end, an abutment near the opposite end, and a convex arcuate surface between them. The module also has a second connecting portion with a groove having a shape complementary to the tongue, including a blind first end, open second end with an abutment adjacent to it, and an arcuate surface between the ends. An intermediate portion connects the first and second connecting portions, and may be flat or define an open rectangle. Two modules are connected together by inserting the tongue of one into the groove of the other and rotating (e.g. about 90.degree.) until the abutments abut. The modules may be joined by bolts to other modules or an elevator cage.

Abstract: For narrow ore mining, shrinkage stopping is used with working equipment, such as a working platform or mining rig (30), which is suspended in guide sections (38) in the roof of the mining chamber, and from which drilling and charging is carried through, the mining chamber communicating with a raise. In the raise, which follows the inclination of the ore body, a transport lift is used designed for receiving the working platform or mining rig (30) in its lift cage (20). The lift cage (20) comprises a transport guide arranged for suspension of the working platform or the mining rig in the lift cage and connectable to a start guide in the roof of the mining chamber.

Abstract: An assembly for raise mining or the like includes a drive support carrying a drive means (10) for driving the drive support along a guide (4). The guide is attached to the drift wall (2) and is successively lengthened concurrently with the drift driving. The drive support carries at least one drill boom rig (62) for mechanized drilling, and an operator's and service platform (40). The operator's and service platform (40) is carried shiftable with respect to the drive support in the direction of the guide (4) between a lower position, in which it does not obstruct the working movements of the drill boom rig (62), and upper positions, in which the drill boom assembly (62) in a collapsed non-operative position extends through an opening in the operator's and service platform (40).

Abstract: A hoist cage is supported by a loop of rope extending around a drive sheave and an idler sheave respectively positioned at the ends of the hoist cage path and attached to the hoist cage by attachment of separate ends of the loop to separate drums rotatably attached to the hoist cage. The drums are coupled to rotate together to take up and pay out rope at different rates and in opposite senses with the rate being higher for the drum from which the rope extends downwardly.

Abstract: The invention relates to rack and pinion lifts, which include a lift car which is driven via toothed wheels by means of an electromotor along a rack carried by a lift mast, said car containing a control and maneuver unit for the electric motor with a control and maneuver button set including floor call buttons, landing based call button units being connected to said control and maneuver unit via a ground level unit from which also a power cable leads to the lift car.In association with the lift car a sensor device is arranged to indicate passage of teeth of the rack or the toothed wheel and produce corresponding position impulses, which represent the position of the lift car.A micro computer system is connected for receiving the position impulses and for collecting and storing call impulses from the call units and destination impulses from the button set of the control and maneuver unit, and based upon the position of the lift car ordering travel direction, retardation and stop of the lift car.

Abstract: An apparatus for automatic bolting in rock reinforcement, the apparatus (11) having a drill (3) an injector, a bolting machine (5), a supply beam (6) a machine carriage (7) which is movable along the supply beam, a linear machine shifter switch (8) by means of which the drill and the bolting machine may be inserted on the machine carriage and which is shiftably disposed along and lockable on the supply beam for different bolt lengths, a working position adjustment device (9) which has sockets (10,11,12) for accommodating a drill bit (13), the forward end of the hose (14) of an injector, a bolt, and a positioning rod (15) which is fixedly mounted on the forward end of the supply beam and may be brought into abutment with the rock face for directing, by means of the appartus, in sequence, the drill bit, the hose and the bolt, at a point on the rock face for the purpose of accomplishing the rock reinforcement operation.

Abstract: This invention relates to an apparatus for separating fine material from coarse material.The screens at present in use in the mining industry usually are so-called shaking screens. They comprise a screen-cloth, which is subjected to a vibration movement. This type of screen, however, has a very high noise level and also is exposed to heavy wear owing to the vibrations, to which the screen parts are subjected.The present invention has the object to provide an apparatus of the kind referred to above, in which the noise level and the mechanical wear are substantially lower than at conventional screens.

Abstract: In apparatus for injecting and mixing a ground stabilization agent into the material of the earth during the operation of an earth drill, a device is provided for generating signals indicative of the upward movement of the earth drill as the drill is withdrawn and while the stabilization agent is being introduced, and a weighing device is provided for constantly weighing the remaining supply of ground stabilization agent and for thereby measuring the weight of stabilization agent delivered to the ground, and a recorder is connected to receive signals from both of the devices for providing a graphic record of the stabilization agent delivered versus the upward travel of the earth drill.