Abstract: The invention relates to a drier for elongate strips of material, wherein a fan for supplying a drying gas mixture to an array of nozzles is not located in the same height as the nozzles, as is common in the field of driers to allow supply of drying gas to the nozzles with a minimal amount of curves in the supply path. Instead thereof the fan is located above or below the nozzles to save ground area, and nevertheless maintaining a feed path towards the nozzles with a minimal amount of curves.

Abstract: A device is provided for connecting the trailing end of a web of material to the leading end of the following web of material. The web of material undergoes a processing operation downstream from the device. The device includes a frame having guide rollers for determining the travel path for the web of material. Pressure elements are provided in the device which are movable towards and away from each other at right angles to the travel path of the web of material. In addition, cutting elements for cutting through the web of material are also provided. The device can be made wide for interconnecting wide webs of material but it is also compact in structure.

Abstract: A cooling device for cooling a web of material coming out of a drier, in particular a paper web of an offset printing machine coming out of a drier, which cooling device comprises a substantially closed housing with an inlet and an outlet slit for the web of material, said housing being provided at the outlet slit side with a feed aperture for feeding in outside air and at the inlet slit side with a discharge aperture for discharging air from the housing, the air being fed through the housing in counterflow to the direction of movement of the web of material, wherein the housing in the direction of movement of the web of material is provided with two or more cooling units placed in series which bring the infed air successively into contact with the web of material.

Abstract: A drier for a web of material in particular for a offset printing machine, consisting of an housing with an inlet slot and an outlet slot for the web of material. The housing is provided with air nozzles which are fed via one or more fans with the atmosphere in the housing. The housing also have at least one heating appliance provided with a combustion unit for treating the atmosphere inside the housing. The interior of the housing is divided by a partition into a heating section and an evaporating section. The heating appliance is provided with an incinerating portion and part of the combustion gases is via an opening discharged to the heating section, while the remaining combustion gases are discharged into the outside air, and the atmosphere of the evaporating section is used as combustion air for the burner of the combustion unit.

Abstract: In a device for continuously feeding a web of material from a stock roll, a conveyor means for conveying the unwinding roll and the remnant roll through the device comprise two parallel essentially U-shaped guide tracks for the rolls. The legs of the U extend in lengthwise direction of the device, such that both loading of a new roll and picking up and discharging of a remnant roll can take place at the front side of the device. For controlling the speed of an unwinding roll two driving belt units are provided which can cooperate with the periphery of the unwinding roll one after another. For running a new roll up to the required peripheral speed for making a splice with an unwinding web and keeping said roll at that speed until the splice is made a core drive is provided which acts upon the shaft of the new roll, and which can work independently of the driving belt units. A new roll can thus be prepared with an adhesive strip over the whole width of the roll, which will result in an uninterrupted splice.

Abstract: A heating appliance particularly for a drier of a web of material comprising a combustion unit having a burner and a combustion chamber. The combustion chamber consists of an elongated first section extending away from the burner and merging into a second portion via a bend of 180.degree. said two portions defining an U-shaped path for the combustion gases and being approximately of equal lengths. The combustion chamber also being provided with one or more discharge openings for discharging part of the combustion gases, said opening(s) being controllable by means of a valve.