APPARATUS FOR MORTAR APPLICATION ON A SURFACE Russian patent published in 1994 - IPC

FIELD: construction. SUBSTANCE: apparatus has a frame with vertical guiding poles, a batch truck with loading and unloading windows. The batch truck is mounted on the poles and is capable to move. A cylindrical blade shaft, rotating in direction of the batch truck movement, is situated in the batch truck in front of its unloading window. There is a stopper to control mortar feeding on the cylindrical blade shaft. A smoothing plate is fixed in the lower part of batch truck body near unloading window. The edges of blades of the cylindrical shaft are projecting over the plane of unloading window by a value, equalled to calculated value of the mortar layer thickness, that is to be applied on the surface. The cylindrical blade shaft is mad in the form of N-sided prism. Blades of the shaft are fixed at angle of 90 deg. to the plane, that is tangential to generatrix of its surface. Blades of the shaft may be flat or curved. Spring-loaded limiting plates, that are capable to move in horizontal plane, are fixed on a side surface of the batch truck near unloading window. The blade shaft has a drive to rotate it and the batch truck has a lifting mechanism. EFFECT: apparatus is useful in application of mortar to plaster surfaces. 5 cl, 4 dwg